Page 1

Structural Timber Magazine.co.uk

SUMMER 2016 | £4.95

STMAG

Design Technology Sustainability Interviews News Analysis Case Studies

The latest in structural timber building design and technologies

SMARTPLY’S REVOLUTIONARY PANEL HELPS HOMES EXCEED PASSIVE HOUSE AIRTIGHT STANDARD

P48

P58

P68

CLOSING THE MARKET GAP

Panels or BOARDS

BIM Adoption

WWA’s position in a highly competitive market

Building boards for structural stability and fire protection

Is Generation X struggling to cope with compliance?


External self-Adhesive air barrier for walls and roofs

Wraptite-SA Airtight, vapour permeable membrane.  Lightweight & easy to install  Increased energy efficiency  External airtight but breathable seal Wraptite membrane provides an airtightness solution for all air leakage problems. Externally applied, it reduces installation complexity and time.

The A Proctor Group  01250 872 261  contact@proctorgroup.com www.proctorgroup.com

BBA Approved - Certificate 15/5274

THE MEMBRANE SPECIALISTS


WELCOME TO It has been an unprecedented last few weeks for the UK. The fallout from the EU referendum and resulting BREXIT outcome set off a game of political ping-pong that never stopped giving and seems set to rumble on for a good few years yet.

FOLLOW US ON TWITTER UNDER: twitter.com/STMagUK ADVERTISING ENQUIRIES PLEASE CONTACT: DAVID SMITH // T: 01743 290013 E: david.smith@structuraltimbermagazine.co.uk BACK ISSUES VISIT: www.structuraltimbermagazine.co.uk FRONT COVER SMARTPLY PROPASSIV PRINTED ON: PEFC 16-33-576 paper stock by Buxton Press

PUBLISHER: Radar Communications Ltd, 5 Darwin Court, Oxon Business Park, Shrewsbury, Shropshire. SY3 5AL T: 01743 290001 | www.radar-communications.co.uk

Structural Timber Magazine is produced and published by Radar Communications in association with the Structural Timber Association: ©Radar Communications Ltd. FOR STA ENQUIRIES PLEASE CONTACT: BOB DAVIS // T: 01259 272140 E: bob.davis@structuraltimber.co.uk DISCLAIMER: The content of Structural Timber Magazine does not necessarily reflect the views of the editor or publishers and are the views of its contributors and advertisers. The digital edition may include hyperlinks to third-party content, advertising, or websites, provided for the sake of convenience and interest. The publishers accept no legal responsibility for loss arising from information in this publication and do not endorse any advertising or products available from external sources. No part of this publication may be reproduced or stored in a retrieval system without the written consent of the publishers. All rights reserved.

Where the uncertainty leaves the construction sector and in particular the timber industry is hard to say. ‘Business as usual’ is the mantra from the key trade associations and you can’t argue with that.

UKCW on the 19 October. As we go to press, the Awards Dinner is close to a sell out, so if you are still wanting to book tables and tickets, get in touch with the organisers now.

So, this Summer issue tries to keep everything on an even keel. We feature the voice of TRADA that has been issuing new guidance on CLT and also preparing to unveil an updated Version 2.0 of the National Structural Timber Specification. Sean Parnaby from the Wood Window Alliance (WWA), also provides an update on why timber is such a key sustainable material and how its members are leading the fight for market share from other materials in a highly competitive market.

This issue features a wealth of news and views from across the construction world. Crucially, as BIM becomes the standard for the construction industry, Andrew Butterfield, from BSI explains more about what organisations need to know, plus we have some expert coverage on panel products in all their many facets, with technical tips from TimberChap and product information and case studies from industry specialists such as Duncryne, EGGER, Magply, SMARTPLY PROPASSIV and Euroform.

By the time you are reading this, Timber Expo and UK Construction Week (UKCW) will be ramping up for action in earnest and we have a short preview of what’s in store later this year. Remember that the Structural Timber Awards 2016 will be held during

As always, many thanks to all our contributors, advertisers and supporters. Enjoy... Gary Ramsay | Consultant Editor E: gary.ramsay@structuraltimbermagazine.co.uk

Production ADVERTISING & PR

David Smith

01743 290013

david.smith@structuraltimbermagazine.co.uk

CIRCULATION

Hannah Jones

01743 290048

hannah.jones@structuraltimbermagazine.co.uk

PRODUCTION

Tim Bol

01743 290001

design@structuraltimbermagazine.co.uk

ACCOUNTS

Debra Brooks

01743 290001

debra.brooks@structuraltimbermagazine.co.uk

01743 290048

hannah.jones@structuraltimbermagazine.co.uk

CLASSIFIED Hannah STA Strip ad Summer 2016_Layout 1 6/22/16 6:13 PMJones Page 1

Fix SIPS to timber... with ease! EJOT’s new JT2-SP2-7 fasteners have been designed and manufactured specifically to provide installers with smooth, secure and problem-free installation of structural insulation panels onto timber substrates.

The Quality Connection

Sample packs available: Call EJOT UK on 01977 687040 Or buy online at www.ejot.co.uk/construction


anti-slip

decking

TM

Scandinavian Redwood decking from stock. PEFC/16-44-002

Available in — 32 x 125 / 38 x 125 / 32 x 150mm Tested by the Health & Safety Laboratory in Buxton in accordance with BS7976: 2002, TM Anti-Slip has been officially recognised as being highly anti-slip in both dry and wet conditions with a typical minimum PTV of 71 when wet. PTV’s of 30 or above are categorised as anti-slip.

enquiries@tmtimber.co.uk

taylormaxwell.co.uk/timber


CONTENTS

THIS ISSUE... P6 | COVER STORY - PROPASSIV SMARTPLY PROPASSIV is the perfect wood-panel system for ultra-low energy buildings. A revolutionary addition to the timber frame industry, its outstanding energy-saving properties has received certification from the Passive House Institute (PHI) performance for airtightness.

P8 | COMMUNAL WILL TO CARVE STRUCTURAL TIMBER’S FUTURE Alex Goodfellow, Director of the Structural Timber Association (STA), discusses a successful year for the UK structural timber sector. P10 | UK & OVERSEAS NEWS A quick round-up of some recent news stories from the timber and construction sectors that you may have missed. P26 | FACTORY VISIT – STEWART MILNE TIMBER SYSTEMS – WITNEY

Stewart Milne Timber Systems (SMTS) has been at the forefront of delivering fabric first efficiency for many years and as part of the STA event programme, regularly opens the doors of its Witney facility for visitors. TTJ_Salvador_QuartA4_v3_idea2016_w16.pdf

P29 | FINANCIAL RISK STILL AN OBSTACLE The economic headwinds at home and abroad are set to provide a testing period ahead. Paul Trigg, timber specialist and Assistant Head of Risk Underwriting at global credit insurer Euler Hermes, discusses why. P30 | TIMBER EXPO 2016 Back for another year as part of UK Construction Week. What to see and what to do at the UK’s leading timber trade show. P32 | THINK TIMBER TRADA produces a number of industry-specific publications dedicated to improving the ways timber is used across the construction sector. Adrian Young picks out three areas where they are providing new guidance. P38 | THE VERTICAL CITY Structural timber is increasingly aiming for the stars. Peter Wilson, Architect and Director of Timber Design Initiatives Ltd and a familiar face within the timber sector from his days at Edinburgh Napier University, reveals some of the reasons why.

1

13/06/2016

P46 | STRUCTURAL TIMBER AWARDS A celebration of innovation, best practice and expertise in timber technology. P48 | CLOSING THE MARKET GAP Sean Parnaby, Chairman of the Wood Window Alliance (WWA) and Managing Director of West Port Windows and Doors Ltd, shows how timber windows and doors are part of the 21st Century sustainability revolution. P52 FIRE COMPLIANCE ESSENTIALS Martin Milner, Technical Consultant at the Structural Timber Association (STA), discusses fire safety regulations during the construction phase and the role of trade associations in mitigating this risk. P58 | TIMBERCHAP – PANELS OR BOARDS Our resident timber expert picks up on the differences in product performance between boards and panels and why the terminology in the industry can cause confusion. P68 | BIM: IMPROVING COLLABORATION IN THE CONSTRUCTION INDUSTRY As BIM becomes the standard for the construction industry, what are the benefits and what do organisations need to know? Andrew Butterfield, Product Certification Director of Built Environment, BSI reveals more. P71 | DO YOU REALLY NEED TO HAVE A STRONG EMPLOYER BRAND? Skilled job applicants are in short supply so attracting the best people is now crucial to success. Jim Roach, Managing Director of specialist recruiter ARV Solutions, explains why a strong Employer Brand is a business essential.

09:59

C

M

Y

CM

MY

CY

CMY

K

Fast, flexible, precision crosscutting with optimisation and defecting as standard.

Main UK & Ireland Distributors tel: web:

+44 (0)115 986 5201 www.daltonswadkin.com


COVER STORY – SMARTPLY PROPASSIV

SMARTPLY’s Revolutionary Panel Helps Homes Exceed Passive House Airtight Standard SMARTPLY PROPASSIV is the perfect wood-panel system for ultra-low energy buildings. A revolutionary addition to the timber frame industry, its outstanding energy-saving properties have received certification from the Passive House Institute (PHI) performance for airtightness.

The PHI plays a crucial role in the development of the Passive House concept – the only internationally recognised, performance-based energy standard in construction. To be recommended by the PHI, products must be tested according to uniform criteria and proven to be of excellent quality regarding energy efficiency. Put to the test As a leading manufacturer of engineered wood panel products, SMARTPLY is renowned for its technical innovation in the development of its pipeline of quality boards. PROPASSIV is a result of such innovation, following its creation at the revered Fraunhofer Institute for Building Physics in Stuttgart, Germany. The result of three years’ vigorous development, each SMARTPLY PROPASSIV panel features alternating layers of wood strands coated with a high quality formaldehyde-free resin system and wax to deliver unrivalled levels of airtightness.

A specialist coating is then applied to provide vapour control properties to ensure a premium performance Oriented Strand Board (OSB) solution for super-insulated and passive buildings. As part of the testing process by PHI, SMARTPLY supplied nine samples measuring 315 x 305 x 12.5 mm - each coated at the edges with a sealing compound to offset the small board size. Measurement of the leakage volume flow took place at pressures between 300 and 1000 Pa in order to obtain sufficiently high flow rates, whilst positive and negative pressure measurements were carried out. “OSB is assumed to be airtight, but tests showed a huge variation in performance, between manufacturers,” explains David Murray, Innovation Manager at SMARTPLY. “Developed from our OSB3 system, SMARTPLY PROPASSIV has been proven to achieve the highest levels of airtightness required to meet the Passive House Standard.”

6 | www.structuraltimbermagazine.co.uk | STMAG

Sustainable, smooth and simple to apply Available in a standard 2397mm x 1197mm size, the SMARTPLY PROPASSIV panel’s smooth and durable surface has also been developed to provide superior bonding of airtight tape at panel joints. Where air and vapour control layer (AVCL) membranes are notoriously difficult to seal, SMARTPLY PROPASSIV offers excellent seal adherence to prevent air leaks, condensation and consequential structural damage. As with all SMARTPLY products; PROPASSIV is manufactured from FSC-certified timber to the specification detailed in BS EN 300:2006. Easy to apply, it is suitable for both newbuild and renovation projects. Its specification for the construction of a private two-storey house ensured the property exceeded Passivhaus levels for airtightness despite taking just over two weeks to build.


COVER STORY – SMARTPLY PROPASSIV

MEDITE SMARTPLY

Certified SMARTPLY PROPASSIV has also played a role in ensuring the first certified PassivHaus home built in Cheshire exceeded industry standard airtightness regulations. Constructed by developer, IGGLU, a total of 100m2 of SMARTPLY PROPASSIV was installed on the ceilings at Red Walls, a stylish £3.5million energyefficient residence in Knutsford, built on forward-thinking technology and natural materials making it the ultimate in luxury. High performer It was used as a Maidenhead home’s airtight layer and provided the integrated vapour barrier which removed the need for an additional AVCL. With SMARTPLY PROPASSIV having created the perfect insulation envelope, tests showed the completed home achieved 0.55 Air Changes per Hour (ACH), comparing favourably with the Passivhaus requirement of 0.6 ACH.

Selected for its outstanding airtight performance, SMARTPLY PROPASSIV ensured Red Walls achieved an N50 value airtightness level of 0.17 (ACH), comfortably exceeding the Passivhaus standard. Ian Forde-Smith, Director at Igglu, says: “We have been highly impressed with the performance of SMARTPLY PROPASSIV. Independent attestation of airtightness from the Passive House Institute has shown it was absolutely the right product for us.”

is a Coillte company, an innovative, FSC-certified Irish forestry and forest products manufacturer. Based in Waterford, Ireland, SMARTPLY produces a versatile range of OSB2, OSB3 and OSB4 building products. SMARTPLY OSB is the smart, cost effective and environmentally friendly OSB for use in structural and non-structural applications. With unrivalled quality and environmental certification, SMARTPLY sheets are among the most environmentally efficient building materials on the market. SMARTPLY is made from locally sourced, sustainable, FSC-certified, fast-growing timber: the forest thinning’s of new-growth pine and spruce, including the tops which are not used to make any other woodbased product are used. SMARTPLY boards are fully certified, structurally approved, CE-compliant, legal and sustainable alternatives to tropical plywood. For more information visit: www.smartply.com

A versatile, strong and cost-effective OSB panel system; SMARTPLY PROPASSIV could play a vital role as part of a highly sustainable and fabric first approach to construction. Its durable, sustainable qualities are likely to prove crucial if the UK is to meet its target of an 80% cut in carbon emissions by 2050 with all new homes built to be ‘zero carbon’.

STMAG | www.structuraltimbermagazine.co.uk | 7


STA COLUMN

Communal Will to Carve Structural Timber’s Future Alex Goodfellow, Director of the Structural Timber Association (STA), discusses a successful year for the UK structural timber sector and the benefits of working with an STA member.

This year’s STA AGM and conference provided the ideal platform to reflect on the current state of the UK structural timber sector and the role of the STA, as the UK’s largest timber association, in shaping its future. Delivering an eloquent and powerful keynote speech, CEO of Build UK, Suzannah Nichol, MBE, called for the construction industry to implement change to maximise the growth and progress opportunities available at present. Suzannah argued that removing barriers and centralising knowledge was integral to driving change within the industry, enabling structures and systems to be put in place that would make the industry progressively better. Furthermore, to encourage talented school and college leavers into a career in construction, it was emphasised that a collaborative whole industry approach would be the most successful. One such example, that the STA is supporting, is Open Doors Week. Hosted by Build UK, Go Construct, CITB and Considerate Contractors, the weeklong event, provides an opportunity for people considering a career in construction to peek behind the doors to gain an invaluable insight of the career paths available. Highlighting the opportunity the current climate presents for the structural timber sector new market share figures were also revealed. Representing a 10% proportional market share growth in just one year, structural timber frame is now used in 27.4% of newbuilds across the UK, up from 24.8% in the last year. Encapsulating

the key features required from a build method at this present time – speed of build, offsite capabilities and reduced labour requirements – structural timber frame is ideally positioned to continue increasing market share over the coming years. For architects and specifiers, offsite manufacturing ensures that a controlled and precise manufacturing process achieves the truest representation of the original building design. Furthermore, by ultilising structural timber, build time and onsite labour requirements are also greatly reduced. This means that the building material is not reliant on a large onsite workforce and can be completed on time – the ideal solution for an industry currently suffering a prolonged skills deficit. Supporting and aiding the growth of the sector, the STA allows for members to pool their resources and knowledge, enabling the collective to become louder and more powerful than the singular could ever be. This presents several clear benefits for working with an STA member. For example, numerous documents have been produced by the STA, demonstrating the multitude of benefits and, specifically, the commercial value of using timber. One such a document is the first edition of the Estimating Guide for Structural Timber. Filling an essential gap in the traditional Spon’s Guide, the report provides estimates for using structural timber products in a variety of projects.

8 | www.structuraltimbermagazine.co.uk | STMAG

Furthermore, the STA Commercial Committee is currently developing a new report to transparently display the commercial benefits of utilising structural timber – from the pre-design phase through to handover and completion. Additionally, working with an STA member allows access to extensive technical insight and expertise, allowing for unique and innovative projects to be undertaken with additional support when required. Furthermore, all STA members adopt the highest of health and safety standards, with advice notes and research documents produced on a host of industry specific issues such as fire safety guidance, CE marking and timber design. This ensures that all projects are completed as safely as possible. The challenge now for the STA is to further galvanise and develop to harness this momentum and continue promoting the multitude of benefits that structural timber building materials present. By seeking to encapsulate the collective ethos of Suzannah Nicol’s message, the structural timber frame industry has the opportunity to become more efficient, influential and bring about change that will benefit all within the construction industry.

Alex Goodfellow, Director Structural Timber Association E: agoodfellow@stewartmilne.com W: www.structuraltimber.co.uk


www.accoya.com

INNOVATION IN WOOD

KEY FEATURES Accoya® wood is produced from sustainably sourced, fast growing wood and manufactured using Accsys’ proprietary patented modification process from surface to core.

Ideal for window doors, cladding, decking and structural applications

DIMENSIONALLY STABLE

OUTSTANDING DURABILITY

PERFECT FOR COATING

BAREFOOT FRIENDLY

NATURALLY INSULATING

EXCELLENT MACHINABILITY

INSECT BARRIER

CONSISTENT QUALITY THROUGHOUT

NATURALLY BEAUTIFUL WOOD

FROM SUSTAINABLE SOURCES

RETAINED STRENGTH & HARDNESS

NON-TOXIC & RECYCLABLE

Available in the UK & Ireland Accoya® and the Trimarque Device are registered trademarks owned by Titan Wood Limited, a wholly owned subsidiary of Accsys Technologies PLC, and may not be used or reproduced without written permission.


UK INDUSTRY NEWS UNITED TIMBER VOICE ON BREXIT IMPACT in an incubator ensuring that we can start growing again, adding jobs and value to the new economy. Initially this must come through tax breaks, incentives to employ, and light touch legislation. We must also ensure that public sector procurement, now unfettered by EU policies, very carefully measures and takes into account the socio-economic impact of decisions within specification.

Leading timber trade associations commented soon after the EU Referendum result on what the future may have in store for the sector. All were agreed that at this stage it was ‘business as usual’. The Structural Timber Association’s (STA) Andrew Carpenter said: “The referendum announcement will undoubtedly raise concerns for the structural timber industry and the construction sector as a whole. There will be a period of uncertainty and adjustment, but this is not a time to let divisions of political ideology split us. Instead, we must continue to relentlessly work towards our common goal – to grow the structural timber frame sector and promote the inherent benefits that structural timber frame as a building material offers. “The STA respects the democratic will of our members and the British population in general. As such, we wish to issue a rally call to those within the structural timber sector. The structural timber industry, as continually proven in our distant and near past, is an incredibly resourceful and resilient sector. The STA has the robust and stable infrastructure that will continue to

work for the interests of its members and the wider timber frame sector.” The UK joinery and woodworking sector put the emphasis firmly on proactive risk management. “For the UK, its people and its economy, we are entering a new chapter in history,” said Iain McIlwee, Chief Executive of the British Woodworking Federation (BWF). “What matters now is that firms are well informed and well prepared to assess risk. From that position of preparedness, businesses will be able to ride through the inevitable period of change ahead with greater confidence and optimism. “Some of the risks will be immediate, such as fluctuating currency. For example, the impact on material and component imports must be factored into joinery estimates and companies must ensure they are not caught out on projects that they have already quoted on, but materials have not been secured. “We will also be lobbying to ensure that the manufacturing sector is not left to struggle through uncertainty, but is placed

10 | www.structuraltimbermagazine.co.uk | STMAG

David Hopkins, the TTF Managing Director added: “During this time the TTF has been – and will continue – working with all European trade association partners to reassure them that the UK is still a strong market which is very much open for business, and that we will maintain strong market relations regardless of volatility. David Hopkins also re-iterated that the EUTR has not changed. “We have also been in contact with the Government, its agencies and enforcement bodies, the European Commission and others. On this, I would like to remind all members that EUTR is now a matter of UK law – regardless of the EU initials at the front – and is still being enforced in the UK and across the EU. It is a sensible risk-based regulation and an approach we continue to support. “The EU Council put out a very positive statement stating that the EUTR and FLEGT had been a success in lowering the threat of illegal timber entering supply chains so far but still needs stronger enforcement. It is inconceivable that the UK will want to be seen to be weakening rules against illegal logging. From formal and informal discussions we’ve had with UK officials the mood seems to be to prove that the UK can continue with strong regime of environmental regulation, whether in or out of EU.” SOURCE: www.structuraltimber.co.uk www.bwf.org.uk | www.ttf.co.uk


UK INDUSTRY NEWS CALLS FOR INDUSTRY CHANGE AT STA CONFERENCE Many of the issues that were highlighted in Nichol’s speech arose in the lively questions and answers session that followed. STA members and invited guests debated and discussed a wide range of issues including the skills and labour shortages, the implications of the apprentice levy and challenges of attracting young people to the industry.

Presenting a keynote speech at the Structural Timber Association (STA) AGM and conference, CEO of Build UK, Suzannah Nichol, MBE, called for the construction industry to implement change to achieve growth and progress. Addressing the packed conference, which took place on the 18th May at The Belfry, Lichfield, Suzannah Nichol spoke of how a communal will to change from those within the construction industry could help it become more efficient and productive, giving it a louder and stronger voice: “As an industry, we need to challenge ourselves. One in ten people within the UK are directly employed in construction. These amazingly skilled and dedicated people work tirelessly, sometimes in the face of adversity, to build incredibly innovative and impressive structures and buildings. “Let’s remove the barriers that hold us back. By centralising our knowledge, we can put in place structures and systems that drive change and make our industry better. Working together we can improve the image of our industry, reform our apprenticeship system, upskill our workers, and consolidate and standardise our health and safety and accreditation requirements across the sector. We can be smarter, better and more efficient. If we have the will to change, we can all win together.”

STA Chief Executive, Andrew Carpenter also addressed members, giving them an update on the structural timber industry and the STA. He revealed structural timber frame is now used in 27.4% of newbuilds across the UK, up from 24.8% in the last year, representing a 10% proportional market share growth in just one year. Reflecting on the growth within the sector and the STA, Andrew said: “This past year has been incredibly busy and successful for our association. STA membership continues to grow at pace – currently standing at 380. We have raised the bar by providing technical excellence and guidance, producing documents such as the ‘Estimating Guide for Structural Timber’, a new STA ‘Code of Conduct’ and a Fire Risk Mitigation Guide to name a few. “Once again, this coming year, we will strive to be the voice of authority and credibility within the rapidly growing structural timber frame industry, a sector which has increased its share of the market by over 10% since 2004. We intend to continue to promote issues such as health and safety, the adoption of Building Information Modelling (BIM) technology and skills and training amongst our members and the industry in general, while raising awareness of the inherent benefits structural timber frame as a building material can offer housebuilders, contractors and self-builders”. SOURCE: www.structuraltimber.co.uk

12 | www.structuraltimbermagazine.co.uk | STMAG

Oak Still a Market Leader Oak continues to be the most commonly specified hardwood in the UK, according to research from Grown in Britain Woodstock. Customer and supplier surveys completed in the Innovate UK-funded project confirmed that oak was the predominant species specified, followed by ash, beech, maple, tulipwood (poplar) and walnut. This was backed up by data from the Forestry Commission on imports to the UK, with Sapele being the prominent tropical species being specified. The research also identified that the main uses for hardwood were internal and external joinery, such as doors frames, screens, windows, architraves and skirtings, along with other external uses, such as cladding and decking, and internal flooring. The surveys also confirmed that there was a lack of information available on UK hardwood, particularly around visual grading, and this was identified as one of the key barriers to the specification of homegrown timber. Many customers and suppliers were not aware that, for many of the applications for which they specify imported hardwood, timber could be sourced from UK supply. Processors did not have a clear picture of the demand for hardwood. Forestry Commission data also confirmed that there were sufficient quantities of standing timber to meet a 20% increase in timber production for all homegrown species in the short term, and for a 100% increase (except for oak) in the long term, with some species such as ash, beech and sweet chestnut in sufficient quantities for a much larger increase.

SOURCE: www.growninbritain.org


UK INDUSTRY NEWS NEW FACE AT WOOD FOR GOOD

Christiane Lellig has been appointed Wood for Good’s new Campaign Director. Based at the Building Centre in London, Christiane will work closely with industry bodies such as the Timber Trade Federation (TTF), British Woodworking Federation (BWF), Forestry Commission Scotland, the Structural Timber Association (STA) and with Wood for Good’s supporting business partners to promote the greater use of timber. A German national, Christiane comes with a wealth of international experience in marketing and communications in the civil engineering and environmental sector. She has previously worked with the Swiss Federal Office for Energy promoting energy efficient building construction and with building insurers marketing better structural protection against natural hazards. Stuart Goodall, CEO of Confor and one of the Directors of Wood for Good, said: “We are genuinely excited about Christiane coming on board. She has the skills, experience and strategic approach necessary to lead the campaign as well as the confidence to engage with all relevant partners in promoting the wonders of wood. Christiane joins us as we concentrate on the role of timber in meeting the housing challenge, the need for a million new

Group for Timber Industries with the support of 45 parliamentarians. With this achieved, I am very sorry to see Dirk leave to pursue other ambitions. I would like to take this opportunity to wish him well and every success for the future.”

homes by 2020, which can only realistically be achieved by embracing timber and in the development of offsite construction methods.”

The British Woodworking Federation (BWF) also recently joined the organisation. BWF Chief Executive Iain McIlwee said: “The CTI’s proposed new approach is one we fully support. It’s a more focused, project-led way of working with leadership coming from the industry itself, so we are keen to lend our weight and get stuck in. We are particularly looking forward to the results of the three workstream reports and working with the other supply chain partners to take their recommendations forward. The BWF has long advocated that the supply chain needs to work together more effectively and the CTI in its current guise offers a real opportunity to achieve this.”

In the recent years the Wood For Good campaign has achieved considerable impact in the market place by promoting the economic, environmental and societal benefits of using timber with its ‘Wood First’ and ‘Build with Carbon’ campaigns, along with a significant programme of CPD events and supporting online resources. SOURCE: www.woodforgood.com

All Change at the CTI The Confederation of Timber Industries (CTI) has announced that its interim Chief Executive Dirk Vennix has left the organisation. On his departure, CTI Chairman Peter Hindle MBE said: “I would like to thank Dirk for his excellent leadership and vigorous efforts to establish a new overarching trade association for the timber supply chain over the last twelve months. Dirk successfully implemented a membership and stakeholder engagement strategy and developed the organisation from start-up to sustainable business. He also created a new All Party Parliamentary

The CTI has commissioned three reports into areas critical for the development of the timber supply chain: on education and skills, sustainability, and growth and value. Each report will contain recommendations to develop each theme within the supply chain. The reports will be published in Autumn 2016, followed by a Parliamentary Conference in October 2016 to discuss the findings with policy makers. SOURCE: www.cti-timber.org

STMAG | www.structuraltimbermagazine.co.uk | 13


UK INDUSTRY NEWS New Guide Available on UK timber A new guide makes the case for using UK timber for construction projects in preference to so-called “superior” overseas products. Edinburgh Napier University academic Dr Ivor Davies challenges the myths that surround UK-produced timber in ‘Sustainable Construction Timber – Sourcing and Specifying Local Timber’.

DEESIDE TIMBERFRAME CONTINUES EXPANSION

Published by the Forestry Commission, the guide helps building designers and contractors source local timber products. It explains why local sourcing is important, reviews the range of timber species and products currently obtainable in the UK and explores ways of sourcing locally within a construction project. Dr Davies, a wood scientist in the University’s Institute for Sustainable Construction, said: “There are more UK-produced timber and wood-based products available than people realise. Many of these products are available in volume and throughout the UK. Local sourcing is, however, sometimes prevented because of misconceptions about what UK timber is capable of. People often believe, for example, that UK produced structural softwood timber is inferior to imported timber of the same grade. This is incorrect. Similarly, it is often assumed that slow grown timber is stronger and denser than fast grown timber – this is usually not the case. Indeed, in some timber species the opposite is true.” The guide will be of use to designers and contractors wanting to source and specify UK-grown timber products, people considering using their own timber on a construction project and those involved in building refurbishment or conservation.

THE 54-PAGE GUIDE CAN BE DOWNLOADED FOR FREE FROM THE FORESTRY COMMISSION WEBSITE: www.forestry.gov.uk/website/publications.nsf/$$search

Deeside Timberframe is set to build on last year’s record financial performance with continued growth in Central Scotland and North England. The timber systems manufacturer, part of Aberdeenshire’s Bancon Group, is reaping the rewards of its investment in additional resources in Central Scotland and North-west of England with over 60% of its business now out with the North-east of Scotland.

John Wright, Deeside Timberframe’s Managing Director, said: “We are expecting to see another strong year of sales for our innovative timber frame solutions in both the house builder and construction sectors. Adding to our business development resources is part of our planned growth strategy and further underlines our commitment to deliver quality, reliability and value for money in this expanding industry.

Deeside Timberframe, which recorded sales of £23million during 2015, has secured sales of £16million, so far, for the year to 2017. These contracts are with a number of main contractors and private developers covering the affordable housing, private housing and commercial sectors. This latter sector which includes schools, care homes and hotels is a specialised area which Deeside has successfully operated in for over 10 years and is aiming to expand further.

“Despite tough market conditions here in the North-east, trading in the region remains strong with a healthy order book and an extremely high level of enquiries. Already accredited as one of the most economic, efficient and environmentally friendly methods of construction timber frame systems are being increasingly used in the construction of homes, supermarkets and hotels.”

14 | www.structuraltimbermagazine.co.uk | STMAG

SOURCE: www.deesidetimberframe.com


A complete range of trusted fastening solutions.

BeA is Europe’s trusted partner for timber frame fastening. We offer a complete range of high performance, highly reliable solutions - from fully automated nailing and stapling systems to coil and strip nailers, screw guns, staplers and a market leading array of nails, staples, screws and other fasteners. All our products benefit from industry leading quality controls and meet or exceed relevant standards such as Eurocode 5 and its subsidiaries.

For more information and a copy of our new brochure, call 01482 889 911 or email sales@uk.bea-group.com www.bea-group.com

NEW

BROCHURE OUT NOW


UK INDUSTRY NEWS Insulation Boost for Shropshire Timber Firm

A Shropshire timber frame specialist which discovered the Actis Hybrid complete insulation system a year ago is on a mission to use the products on as many of its new projects as it possibly can - not least because it is so clean and easy to install. Timber Kit Solutions, which builds around 150 units a year, says the three products in the Hybrid range ‘tick all the boxes’ and is doing its utmost to steer customers towards choosing that as their preferred insulation system. Managing Director Simon Ball explained: “When discussing specification with clients, we go through all aspects of their build from

start to finish. With regards to the insulation, I show them various options including Actis and I talk them through the benefits of each type. When they ask what I’d recommend, I say Actis because of the ease of installation and the fact there’s no dust or mess, which for me as an important factor. “We specify it wherever possible – its thermal performance is excellent, it is cost effective and there is no dust when cutting it. Plus there are no itchy fibres which can be unpleasant to the skin. We also get excellent customer support and technical advice when needed.”

SMARTPLY Unveil Latest Board

Following feedback from customers, SMARTPLY OSB is now available in its flattest, smoothest most accurate form yet. Responding to market demand for a high quality board which can be used for an even greater variety of applications, the new OSB panel is now offered in the broadest range of size and thickness, with

widespread availability leading to minimal lead times. This achievement has been made possible by an investment of €59M, bringing the latest, state-of-the-art technology to the manufacturing plant in Waterford, Ireland, making it the most advanced in Europe.

16 | www.structuraltimbermagazine.co.uk | STMAG

While self-build projects make up a large part of Timber Kit Solutions order book, the company also provides timber frame structures for small to medium sized developers, commercial buildings, apartment blocks up to and including five storeys, and nursing homes across Shropshire and the wider UK. The fact that the Actis Hybrid range offers three products which can be used in a mix and match combination is another its key selling points. The system was designed so that builders could use just one of the three products - a honeycomb style insulation available in a variety of thicknesses, a breather membrane and a vapour control layer – or use two or three of the materials as an all-in-one complete system. Actis users tend to choose either two or all three products: mainly the insulation, Hybris with the breather membrane Boost’ R Hybrid or Hybris with the vapour control layer HControl Hybrid. Not all constructions, such as refurbishments, are suitable for all three products. However, the use of the entire Hybrid system is perfect for new builds. SOURCE: www.insulation-actis.com

The first new SMARTPLY OSB panel rolled off the press on 6 April 2016. The board’s consistency is due to the latest continuous press technology used in its production. This powerful process involves raw materials being transported via conveyor belt between precision milled, highlyaccurate rollers and guides, guaranteeing the accuracy that customers demanded. The cutting-edge machinery ensures unrivalled flexibility in dimensions to enable almost instantaneous adjustment of panel lengths and widths. The new SMARTPLY OSB panel has already captured the imagination of those involved in the timber frame industry where building elements such as flooring and wall sheathing require products to align perfectly and sit flush with adjacent panels. SOURCE: www.smartply.com


Long-term performance, whatever the weather.

Picture credit: Kivells Ltd

Snows’ ThermoWood® cladding stays the course Specified by one of the UK’s major contractors, and machined to their bespoke profile, modified ThermoWood® cladding from Snows Timber was used throughout a major agricultural auction centre. With an estimated 30-year service life, Snows Timber produces ThermoWood® heat-treated claddings in both Shiplap and PTG & Open V profiles, in various length specifications, with stock held at our four sites covering England & Wales. We can also machine to order. ThermoWood® trims and framing, and matching decking, are available to complete the aesthetic. Stock profiles are delivered in 48-72 hours in most areas; bespoke profiles in three weeks. Our delivery fleet includes crane offloaders, for safe delivery direct to site.

specialist@snowstimber.com @SnowsTimber South, South West & South Wales Tel: 01458 836400

West Midlands, North Wales & North West Tel: 01384 279211

London & South East Tel: 01264 735371

Eastern England, East Midlands & North East Tel: 01623 513108


UK INDUSTRY NEWS UK’S LARGEST ANGLING SITE GETS TIMBER FISHING LODGE

Recticel Insulation Bring New Pitched Roof System to Market A next-generation, self-supporting, room-ina-roof system for pitched roofs has been launched by leading PIR manufacturer Recticel Insulation. The innovative new product, L-Ments®, comprises cable gap, breather membrane, counter battens and integral structural timber in one PIR insulation panel as a single lightweight cost-effective modular roofing element, making it exceptionally quick and easy to install.

Architectural practice WG+P (Waind Gohil+Potter Architects) have been appointed to design a new pavilion at Farlows Lake, the UK’s top carp fishery. The site is in the heart of the Colne Valley in Buckinghamshire and set within a green belt that covers over 25 acres of lake and attracts thousands of visitors a year. The new lodge will replace a temporary building made from containers that currently sits on a peninsular surrounded by a group of lakes known collectively as Farlows Lake. The brief for a permanent facility was to design a contemporary practical pavilion that could be delivered within in a tight timeframe and modest budget, yet continue to bring intrigue and refinement to this prime position bordering the lake. WG+P’s design is largely a prefabricated modular single-storey timber structure that combines a natural and raw aesthetic approach with sophisticated detailing and will integrate into the surrounding trees and green belt. The lodge has a sweeping crescent with a lightweight metal roof ‘floating’ over the top. A limited number of materials are used for the building which also needed to incorporate a large tackle shop, café, washrooms and office space.

The glulam timber frame is designed to be pre-fabricated offsite along with the walls and roof which will arrive as pre-made/ pre-insulated panels that are then craned into place. This onsite assembly of frame and un-clad envelope will take under a month to construct. The design was allowed a ‘lighter’ touch given that visitors to Farlow’s go primarily to fish and are familiar with braving the elements, so will not expect a warm retreat. This enabled a sustainable approach with minimal heating and thermal performance, which meant by developing an envelope that would usually be substandard by normal measure, less materials were needed for construction and single glazing appropriate. Furthermore, the lake itself can be used to heat the lodge by linking a heat pump to coils of pipe laid within the water.

The underlay felt is pre-glued and vapour permeable with self-adhesive overlaps, the counter battens are already fixed to the panel, the multi-layered facings act as a vapour and air barrier on the inside, the PIR insulation core performs thermally to 0.023 W/mK, and the timber stiffeners incorporated within the PIR core provide sufficient strength for selfsupport. The future-proof system has been designed for ultimate thermal performance, with U-values of between 0.13 and 0.19, as well as fast installation and reduced construction costs, with maximum savings on space and energy usage.

WG+P Director, James Potter commented: “A fishing lodge lends itself to being a simple timber structure but we wanted to bring elegance to the design along with refined detailing. It was crucial for the pavilion to sit comfortably and blend within the landscape, hopefully our design raises the bar for lodge design.”

Using L-Ments® in conjunction with Recticel’s full-fill cavity wall insulation Eurowall + and high performance floor insulation Eurothane GP provides specifiers and contractors with a holistic building solution for the complete building envelope that showcases a fabric first approach to building as well as offsite construction via the use of fewer materials and speedier installation. Available in four different thicknesses and five different lengths, the panels feature shiplap joints.

SOURCE: http://wgpa.co.uk/

SOURCE: www.recticelinsulation.co.uk

18 | www.structuraltimbermagazine.co.uk | STMAG


DOUGLAS FIR

The Timber Species of the Future STRUCTURAL COMPONENTS - Cinema «Les Fauvettes» - Architect : Françoise RAYNAUD

France : the second largest producer of Douglas Fir in the world with a current sawn output of 700,000m3, set to rise to 2.5 million m3 by 2030. Sapwood Free Douglas Fir: naturally durable for Use Class 3.2. Fades into a nice silver grey. Natural Douglas Fir: Use Class 3.2 by grey or brown impregnation. Great mechanical resistance so the timber species of choice for structural components.

SOFT WOOD

CLADDING Tremolo, brown impregnated

SPECIALIST

CLADDING Vibrato, grey impregnated

DECKING Catalina, grey impregnated

SLEEPERS Sapwood free Douglas Fir

INTERIOR CLADDING Glulam, 7 colours available

elisabeth.piveteau@piveteau.com • + 44 (0) 7821 807 788 PIVETEAUBOIS • www.piveteaubois.com/en/


UK INDUSTRY NEWS NEW FIFE HOUSING DEVELOPMENT HALFWAY

NEWS IN BRIEF Howarth Expands to 30th Branch Builders and timber merchants Howarth Timber and Building Supplies has bought Maltings Timber Merchants in Doncaster. The acquisition of the 30-year old company brings Howarth its 30th branch. Howarth Managing Director, Nicholas Howarth, said: “Maltings Timber Merchants is a successful business with standards and values that match up with those of Howarth Timber.” EBS Expands With Appointment of Technical Sales Manager Sustainable building products distributor, Ecological Building Systems, has appointed Neil Turner as Technical Sales Manager. A BBA-competent U-value assessor who has also been involved in developing CEN (Comité Européen de Normalisation) European standards. EBS’s portfolio includes Pro Clima air- and windtightness solutions, Gutex insulation and Calistherm climate board.

Construction of a new affordable housing development in Fife has reached the halfway stage. The £12 million Fife Council development at Methil Brae will see 100 properties built on the site of the former Glencast Foundry. The development is being delivered by Robertson Partnership Homes, alongside timber frame supplier Robertson Timber Engineering. Stewart Shearer, Managing Director of Robertson Partnership Homes, said: “Construction at Methil Brae is well underway, taking an area of derelict, brownfield land and transforming it into much-needed local housing. This project is rooted in the community and we are delighted to be working with local sub-contractors during the build. Methil Brae has also given local apprentices the opportunity to gain valuable skills and experience in the construction sector, helping them on to the career ladder in the process.”

David Parker, Technical Sales Manager of Robertson Timber Engineering, added: “The speed of the timber frame build process is of huge benefit to the affordable housing sector in Fife and beyond. An efficient construction process allows trade sub-contractors to get onsite sooner, enabling them to complete properties in line with the tight construction programme schedule. This leaves prospective tenants to enjoy moving into their newbuild, high quality homes in Methil.” The project comprises a mixture of one to five bedroom properties including semidetached units, bungalows and cottage flats. The first phase of housing is due to be available for rent this summer. SOURCE: www.robertson.co.uk

20 | www.structuraltimbermagazine.co.uk | STMAG

Peter Hansford Now a Professor UCL’s Bartlett School of Construction and Project Management has appointed Peter Hansford, formerly the government’s chief construction adviser, as Professor of Construction and Infrastructure Policy. Peter, who was due to join the school on 1 July, served as the government’s adviser from December 2012 to November 2015 and played a key role in developing the Construction 2025 strategy. New Head at JELD-WEN JELD-WEN, the Sheffield-based manufacturer of timber windows, doors and stairs has appointed Graeme Robinson as its new Managing Director. Robinson brings many years of UK, European, and global manufacturing experience to the business, with over 25 years in senior management roles across a number of sectors, including manufacturing, FMCG and distribution.


Consistently accurate. Why tolerate anything else

Customers told us they wanted the flattest, smoothest, most accurate boards, in the broadest range of sizes, with the widest availability and minimal lead times. We listened. Then invested. To find out more, please visit www.discoversmartply.com


OVERSEAS NEWS Finland

Portugal

First Nordic PEFC Project-Certified Building Underway

MIMA Light House

The architects behind a prefabricated housing company have completed one of their smallest buildings so far – a cuboidal property raised on a mirrored plinth above a grassy Portuguese landscape. MIMA Light is the most simple of the building models offered by the MIMA House brand, established by architects Mário Sousa and Marta Brandão.

The apartment building being built at the Seinäjoki Housing Fair, Mäihä, is the first PEFC Project Certified building in the Nordic countries. “We are pleased that the first Nordic PEFC construction project will be introduced primarily in Finland. There have been good experiences on project certification including a certified apartment building in England and a certified framework for a sports festival in Italy”, says Auvo Kaivola, Secretary General of PEFC Finland. The apartment building is constructed by Lakea Oy. “We are pioneers in wood construction in Finland therefore we wanted to be also the first ones in project certification. The use of cross-laminated timber (CLT) elements offer many opportunities and guarantees, among other things, the rapid erection of the building.

We want to develop wood construction practices in Finland”, says Timo Mantila, Chief Executive Officer of Lakea Oy. The construction will be built from modules, which are assembled in Stora Enso’s mill. The raw material for the CLT is PEFCcertified.

Available in a variety of sizes and colours, this house comprises a simple rectangular block. Using an unusual mirrored base, it is designed to create the impression that the building is floating above the ground. “MIMA Light is the ultimate achievement in modular construction, combining an outstanding lightness with an iconic and minimal image,” explained the design team. “This module is completely produced and assembled in factory and then transported to the local site, ready to be implemented.”

PEFC Project Certification is based on a particular Chain of Custody practice where the subject of the certification is an individual project. The building is issued a PEFC certificate after independent third party verification proves that the project adheres to PEFC requirements throughout the supply chain. In 2014, Kingsgate House London, was the first major construction project in the world to achieve PEFC Project Certification.

MIMA Light is a stripped-down version of an original house design from 2011, more suited to an individuals or a couple than a family. The cross-laminated timber (CLT) structure offers various layouts and the building can function as a simple one-room home, or it could be used as an office or commercial space. It is available in lengths between seven and 12 metres.

SOURCE: http://bit.ly/29cpALX

IMAGE: © Jose Campos

22 | www.structuraltimbermagazine.co.uk | STMAG

SOURCE: www.mimahousing.com


Straight as the proverbial

Customers told us they wanted the flattest, smoothest, most accurate boards, in the broadest range of sizes, with the widest availability and minimal lead times. We listened. Then invested. To find out more, please visit www.discoversmartply.com


OVERSEAS NEWS Netherlands ECOstyle Achieve BREEAM Award

Based in the Netherlands ECOstyle is a major player in environmentally focused products in a wide range of soil, plant and animal markets across Europe. When it came to designing their new head office and warehouse in Oosterwolde, ECOstyle also made sure the environmental aspects of the building were top of their requirement list. This has been recognised with the 2016 BREEAM Award for the most sustainable industrial building in Europe. The award highlighted the approach to the natural environment as a whole, all sustainable aspects surrounding the building, both in design and construction, as well as the impact of the overall building concept. WAXEDWOOD GOLD preservative treated timbers supplied by Foreco of Dalfsen were used throughout the building and added to the environmental credentials. Around 55m3 of FSC-certified Siberian Larch was pressure treated and supplied by Foreco for use as interior and exterior claddings and facades as well as central support columns to the laminated beams within the warehouse. The WAXEDWOOD GOLD timbers are fully protected against decay with Arch Timber Protection’s next generation TANALITH wood preservative, greatly extending their natural service life. The treatment also incorporates unique wax additives that give water repellent protection and a rich colour additive that delivers the warm gold finish that will weather evenly giving a more natural appearance. SOURCE: www.archtimberprotection.com

USA Accoya chosen to clad Ark Encounter project

Staying true to the biblical reference, the Ark Encounter tourist attraction in Williamstown, Kentucky opened on the 7th July 2016. The park is a one-of-a-kind historical theme park which is expected to draw up to 2.2 million visitors a year. Designed by Troyer Group Ark is a replica of Noah’s ark described in the Bible: 510-feet long and 80-feet high, thus, making it the largest free standing timber structure in the world. Todd Geer, vice president of Troyer Group, described the ark as “very rustic, with exposed wood throughout.” The inside offers more of a museum-based experience - providing further detailed information about the historical nature of the ark. Knowing that alternative wood products would not hold up to the elements and remain stable, The Troyer Group chose Accoya wood for the exterior cladding because of its dimensional stability. In addition, its acetylation properties prevent pests from damaging the surface and ruining the aesthetics of the structure. A total of six containers of Accoya wood were delivered to the site between December 2015 and March 2016. Harry Morton, the project superintendent, was very pleased with the ease of installation and the lightweight properties of Accoya. In the fall of 2015, the project team built a test panel to monitor the natural changes in colour of the wood and were very satisfied with

24 | www.structuraltimbermagazine.co.uk | STMAG

the weathering and the natural grey colour generated from Accoya. Utilising 300 – 400 m3 of Accoya, the Ark Encounter is one of the largest ‘green’ construction projects ever created in the US. Accoya wood was selected for both its ‘green’ credentials as well as its high-quality sustainability, which far exceed unsustainable tropical hardwoods. Accoya is sourced from FSC® certified and sustainable forests making it the ideal wood product for this monumental and ambitious project. Todd Geer at Troyer Group commented: “We were impressed with Accoya’s credentials – the product is fully carbon neutral, extremely durable in exterior applications and both reusable and recyclable. Accoya has been recognised for its environmental standards worldwide so we were very interested in using Accoya to build the country’s very own Noah’s Ark.” Laura Ladd, Head of Marketing at Accsys Technologies said: “The Ark Encounter project is an exciting and creative building project. I am thrilled that the Troyer Group chose Accoya to turn the project vision into a reality. Accoya has been widely used for innovative construction projects throughout the world. SOURCE: www.accoya.com


We’ve listened to what you want. Consistently accurate. The smoothest surface for the highest quality finish.

Flat as a board. As it should be.

The broadest range of thicknesses for every application.

The straightest board you could ever need.

Readily available in a huge range of sizes.

The market leading board with minimal lead times.

It’s here, our smartest OSB yet. Customers told us they wanted the flattest, smoothest, most accurate boards, in the broadest range of sizes, with the widest availability and minimal lead times. We listened. Then invested. To find out more, please visit www.discoversmartply.com


FACTORY VISIT

Onside with Offsite The UK’s leading timber homebuilder needs little introduction. Stewart Milne Timber Systems (SMTS) has been at the forefront of delivering offsite manufacture and fabric first efficiency for many years, and as part of the STA event programme, regularly opens the doors of its Witney facility for visitors.

01 The £10 million Witney facility is one of the largest and most advanced timber frame operations in the UK and since opening in 2003, has become the key factory that has led to SMTS producing approximately 10,000 homes a year. With solutions to the housing shortage in short supply, SMTS has been vocal about the answers resting in the twin concepts of a fabric first approach combined with offsite manufacture. Both prove an effective way to maximise energy efficiency, deliver consistent factoryengineered quality and control build costs. Between the two production facilities in Witney and sister operation in Aberdeen, SMTS can produce 16,000m of wall panels per week, 8,500sq m of floor cassettes per week, 225 housing ‘kits’ per week or one house every 20-30 minutes. These quantities have positioned them as the UK’s market leader with wall, floor and roof panels typically designed to 3.6m x 2.4m sizes for ease of transportation, but can be made up to 9m x 3m. Production line flexibility means any customer requirement can be delivered with no restriction in the height, shape or configuration of panels.

02 “We open the doors of our Witney factory to the industry on a regular basis to allow it to see offsite construction in action,” says Mike Perry, Sales Director at SMTS. “Our facility at Witney is unique and the advantages offsite manufacture can offer to developers, architects, housebuilders and designers are hard to beat with other, onsite build solutions. By attending our factory tours, not only can visitors understand the process step-by-step, but they can see for themselves how it could benefit them.” Witney has the capacity to produce the entire SMTS product range. This includes the I-beam and solid timber joist floor cassettes, pre-insulated roof cassettes, plus the familiar Sigma Build System open and closed wall panels. The Sigma II Build System closed panel product has been at the heart of SMTS success. This offers a high level of prefabrication with the BBA-certified Sigma II providing external wall U-values ranging from 0.25 – 0.10 W/m2/k, with very low levels of airtightness of 5 – 1.5 m3/h/m2 @ 50 pa and thermal bridging of 0.08 – 0.02. Indeed, the Sigma II exemplifies the fabric first approach.

26 | www.structuraltimbermagazine.co.uk | STMAG

03 “The Sigma II Build System was the result of a two-year research and development programme,” adds Mike. “As a result, it has been one of our most sought-after products for a range of projects, from BREEAM ‘Excellent’ student accommodation to highperformance residential homes. We place a huge priority on innovation and, at our Centre of Excellence in Witney, our product innovation team works in collaboration with a number of companies in the construction and housebuilding sectors, developing new products which contribute to a more efficient, sustainable, high-quality and costeffective industry.” With the threat of more UK recession after the EU Referendum, offsite manufacture and its defining cost-effectiveness may well prove to be a boost to all those operating in the timber sector. Offsite delivers a typical construction phase that ‘traditional’ construction techniques cannot get close to achieving. SMTS state that compared to a masonry build time of 18 weeks, the Sigma OP system can reduce this to 12 weeks (nine weeks from foundations) and the Sigma II Build System seven weeks from foundations.


Innovation in timber engineering

THE SUPERCHARGED TIMBER COMPONENT CUTTING

TURBO-DRIVE

The most versatile truss and frame component cutting machine in the UK market My Hundegger and me! Never change a winning team!

Impressive 450 x 160 mm cutting capacity

Cutting timber dimensions in 5 axis

Excellent for the high production of roofing trusses, and timber framing

Seamlessly links to all the main CAD software suppliers

In built Board-Stretcher

Yields more and waste less timber

Fast, accurate, flexible and affordable

Hans Hundegger AG Chris Osborne 2 Cuebar Court Lashford Lane Dry Sandford, Oxon OX13 6JP Tel: 01865 736444, email: chris@hundeggeruk.com

www.hundegger.com

4c 93 x 267 STA_eng.indd 1

24.03.2016 11:45:29


FACTORY VISIT

“Offsite construction reduces labour requirements and onsite costs, ensures less waste and reduces call-offs within a three-week window from design sign-off, with no capacity constraints. When we take these benefits and combine them with precisionengineered timber systems, it gives us a guaranteed way to construct high quality buildings across the UK that are cost-effective, sustainable and highperforming.”

04 SMTS also reports that it was able to build a terrace of three homes in just eight weeks using the Sigma II Build System. For a project of ten terraced blocks, this equates to a possible saving of £45,460 – the equivalent of 10 weeks in time compared to using masonry. “During any construction project there are inevitably cost, time and quality pressures,” says Mike. “The UK Government’s ambition to build one million new homes by 2020 may also be playing on housebuilders minds, but using offsite construction and timber systems is a proven way of reducing cost without sacrificing on quality and, most importantly, protecting profit at all stages of the build programme.” To further improve the closed panel product, SMTS are providing a factory-fitted window and door service and has developed a sliding bracket fixing system that allows windows and doors to be installed horizontally within the timber frame. The windows and external doors are shipped to Witney to suit production runs. The windows

are supplied with protected frames and ‘peel off’ glazing protection, so they can still be used during construction for ventilation and provide daylight. Airtightness tapes can also be factory-fitted for easy sealing to the panel aperture reveals once the windows are moved to their final position. This system is available for u-PVC windows and external composite GRP doors ranging from 1.4 – 0.8 U-value, including triple glazed units. “Offsite construction enables us to value-engineer timber systems to exact requirements,” adds Mike. “Adding extra features where required by designers and developers. We work closely with our clients from the initial design and concept stages right through to construction and erection to ensure timber systems are of the highest quality and are tailored to their needs. With the ongoing skills, material and housing shortages, not to mention cost increases, more and more developers need an advanced build method that can offer a solution.

28 | www.structuraltimbermagazine.co.uk | STMAG

Witney Key Facts & Figures PER ANNUM • 15,000 cubic metres of timber products procured • 353 full lorry loads of incoming timber products • Capacity for 141,000 square metres of floor cassettes • 120 minutes to create the components to make a standard three or four-bedroomed house • Capacity 142km of wall panels • Less than 4.5% product waste • 100% waste recycling of wood, sawdust, cardboard and polythene • On average it takes it takes 11 trees to build one house. FSC/PEFC-certified suppliers plant more than they use • 19,000,000 nails consumed. For more information visit: http://timbersystems.stewartmilne.com

IMAGES: 01-03. The Witney facility produces the full range of SMTS products 04. EPS insulation within the panel


FAIR PAYMENTS

Financial Risk Still an Obstacle The economic headwinds at home and abroad are set to provide a testing period ahead. Paul Trigg, timber specialist and assistant head of risk underwriting at global credit insurer Euler Hermes, discusses why.

dropped sharply, together with the falls in demand across China, Russia and Brazil, is of particular concern.

Looking at how other UK industries performed last year, timber fared well on the tailwind of favourable trading conditions. But while the number of late payments across the sector dipped in 2015 compared with the previous year, several large failures across the industry served as a timely reminder that timber businesses need to be vigilant of significant financial risk. The troubles across construction are well documented, and as such, timber sub-sectors operating in close proximity saw a deterioration in client payment behaviour. Joinery firms, for example, saw an 11% year-on-year increase in payment delays last year, and it’s difficult to see much improvement over the next 12 months as construction struggles in face of the acute skills shortage, inflating input costs, a steep decline in residential housebuilding activity and delayed investment decisions. The overall outlook is fairly uncertain. Activity levels across timber are being affected by the fall in construction output and, together with the impact of global

economic factors, it’s having a marked impact on company margins with UK timber prices showing little sign of upward movement following last year’s 15-20% drop. Foreign exchange movements are creating significant volatility, pushing timber importers to be increasingly flexible on target markets to ensure competitive purchasing. Sterling’s slide both before and after June’s referendum decision has held back timber trade with the UK, leading mills across Europe to look elsewhere for markets with better returns. Sweden, for whom the UK is the largest export market, is a prime example. Given the uncertainty surrounding future trade with the EU for the foreseeable future and wider global economic uncertainty, it’s difficult to predict at what level sterling will settle at. As timber is a global commodity and market dynamics outside the UK have an impact on price, global economic headwinds are also playing a significant role. A slowdown in North Africa, where the numbers of commercial and residential projects have

Despite dwindling commodity prices, interest rates and low inflation, companies are not set to enjoy any improvements in UK consumer confidence in the shortterm. Concerns about current economic prospects, largely surrounding the UK’s future relationship with its largest trading partner, have seen consumer confidence nose dive at the sharpest rate in 21 years according to research from GfK. Taking in each of these points, it’s fair to say the next 12 months at least will be challenging for businesses across the timber supply chain. Management teams will do well to keep a close eye on both margins and stock levels to ensure they don’t hold too much product should timber prices fall further. Strategy will also be key, particularly when it comes to decisions on selling at a loss or holding on to stock in the hope of short-term price rises. In addition to this, businesses should be particularly vigilant on customer and debtor management to keep track of any changes in payment behaviour, such as rises in Day Sales Outstanding (DSO). Maintaining a close eye on bad debt red flags, together with exacting appropriate due diligence on new customers will help businesses navigate the increasing financial risk. For more information visit: www.eulerhermes.com or Twitter @eulerhermes.

STMAG | www.structuraltimbermagazine.co.uk | 29


TIMBER EXPO 2016

Timber Expo Returns Timber Expo, the most important event in the timber industry’s calendar is back for 2016, returning as part of UK Construction Week. Strengthening its roots in Birmingham, Timber Expo will take place on 18 – 20 October at the NEC.

In what has been a hugely eventful year for the timber trade, the event will be brimming with the latest products, innovations and developments across the sector. An informative educational seminar programme led by the Timber Research and Development Association (TRADA) will also be held, along with a discussion of the key issues currently facing the industry. The event is free to attend and is the only dedicated UK event for the timber industry. Exhibitors will cover the breadth of timber applications from timber frame, sawmills, merchants, glulam, SIPs, CLT, fixings and fastenings, timber cladding, doors/windows, mouldings, skirtings and flooring. The show will also provide the ideal platform for exhibitors and visitors to network, learn new skills, find new products and trade. In 2015, Timber Expo attracted more than 6,000 visitors, with 60% of the UK’s top 100 architectural firms represented. The show is also fully supported by the industry’s leading trade groups and associations, some of which include TRADA, the Structural Timber Association (STA),

the British Woodworking Federation (BWF), the Timber Trade Federation (TTF), the Confederation of Timber Industries (CTI), the Royal Institute of British Architects (RIBA) and the Construction Products Association (CPA). What’s on at the show? As a result of the strong support of the show by leading associations, its comprehensive seminar programme is full of high quality content that will make visiting well worthwhile. The show will be the perfect opportunity to get a heads up on the latest developments in the industry and represents the first major event in the industry following the EU referendum. Leading industry association TRADA will coordinate the Timber Focus Seminars, providing three days (18 – 20 October) of insightful seminar sessions across a broad spectrum of industry trends and issues. With opportunities for the audience to join the debate, the programme offers a unique chance to converse with influential speakers from across the timber industry.

30 | www.structuraltimbermagazine.co.uk | STMAG

Day One of the seminar schedule will focus on pushing the boundaries of what is possible with timber and will be chaired by David Hopkins, Managing Director of the TTF. Topics will include building timber skyscrapers, innovation and growing the timber market with speakers such as Michael Ramage, Senior University Lecturer in architectural engineering at Cambridge University and Jon Shanks, Associate Structural Engineer, Buro Happold and Visiting Research Fellow at the University of Bath. Day Two will tackle the challenges of increasing timber specification within the industry. Panellists will discuss the introduction of TRADA’s new Timber Pre-Scheme Manual, how the UK’s Nationals Structural Timber Specification (NSTS) has helped get timber specifications right for major sub-contractors and what the industry can do to make it easier to specify timber. The second day will also look at timber’s role in the custom and self-build market. The final day of seminars will explore the possibilities of hybrid construction from both an engineer and architect’s perspective. Other topics covered on the third day will be continuing innovation for structural timber frames and UK manufacturing with speakers including Alex Cook, Technical Project Coordinator at Barratt Developments PLC, Alastair Parvin, Co-founder of WikiHouse Foundation and Alex Goodfellow, Managing Director of Stewart Milne Timber Systems.


TIMBER EXPO 2016 Rupert Scott, Marketing Manager for TRADA said: “We thoroughly enjoyed working with Media 10 to organise the Timber Focus seminar programme this year. UKCW organised an incredibly generous seminar theatre programme which certainly provided show attendees with all the inspiration and information they could possibly want.”

Reaffirming its position within the industry, Timber Expo is also proud to announce it will be sponsoring the Innovation Award at the TTJ Awards 2016. Celebrating some of the most exciting new developments in the industry the Innovation Award this year will be split into two categories: Innovative Product Development and Innovative University Timber Research. Speaking on its involvement at Timber Expo 2016, Thibaud Le Moign, Export Development Manager for French Timber commented: “As an association dedicated to promoting French wood within export markets, Timber Expo 2016 is a perfect opportunity to network and forge new business relationships. It will be our third time exhibiting at the event and we’re very excited to meet so many key players in the UK timber market. We’ll be presenting various samples of French hardwood and softwood products at the stand.” Nathan Garnett, Event Director for Timber Expo, commented: “As the UK’s only dedicated timber event, Timber Expo 2016 provides a fantastic opportunity for the collective industry to converge on one location, network together and build new avenues for business. What’s more, with the continued support from TRADA this year, we’ve developed an educational seminar programme guaranteed to benefit professionals at every level within the industry.” Following the success of last year’s event, UK Construction Week will once again offer much more than just access to hundreds of

industry leading exhibitors and associated products and services. With several new industry awards celebrating excellence in the sector including the Structural Timber Awards in partnership with the Structural Timber Association (STA), the entertainment programme will also see the return of its popular beer and ale festival and much more. The event will also provide the unique opportunity for key visitors to take part in a hosted buyer scheme. Designed to offer active buyers a structured and highly effective show experience, the scheme will allow buyers to efficiently cut through the ‘noise’ by going directly to the suppliers and vendors that are most able to meet their needs. Following an in depth consultation to establish the buyer’s requirements, the UK Construction Week team will organise a bespoke programme of handpicked supplier meetings, seminars and networking events, all designed to help the visitor fulfil both their immediate and longer term project needs. This focused approach allows participants to get maximum return on the time they invest in attending

the show. What’s more, this service is completely free of charge. A number of other useful events will be taking place during UK Construction Week including breakfast briefings with Glenigan and the Construction Products Association (CPA). The National Custom and Self Build Association (NaCSBA) will also be announcing the winner of £5,000 and the Self Build on a Shoestring competition at Grand Designs Live. In addition, ITN Productions in partnership with the Home Builders Federation (HBF) will be launching its ‘Foundations for the Future’ newsstyle programme at the Build Show. The programme will explore the state of the home building industry today. Furthermore, the coveted Irwin Tools Tradesperson of the Year award will also be announced during the show. Registering to attend Timber Expo is quick, easy and free and can be completed by visiting: www.timber-expo.co.uk. What’s more, by completing the form trade visitors can access all nine shows taking place at UK Construction Week.

STMAG | www.structuraltimbermagazine.co.uk | 31


TRADA

Think Timber TRADA, one of the UK’s leading authorities on wood, produces a number of industry-specific publications dedicated to improving the ways that timber is useD. Adrian Young picks out three areas where they are providing new guidance.

01 Structural timber has been penetrating market sectors once dominated by structural steel or reinforced concrete thanks to increasing availability of highquality engineered timbers such as crosslaminated timber, glued laminated timber and laminated veneer lumber. But it is perhaps the adoption of a more pragmatic approach to design and the combination of two or more structural materials to achieve the most effective solution that has elevated timber to its key role within hybrid construction methods. Exactly what constitutes a ‘hybrid’ structure is open to question. In a major new publication – Hybrid Construction – TRADA explains the role that timber can play in conjunction with other materials to structural challenges. Few would apply the term to a structure where steel connections are barely visible in a largely timber structure and where these

connections simply transmit compressive or tensile forces from one timber element to another. ‘Hybridisation’ is more obvious when a timber roof structure is supported on steel columns or raking struts, or timber floor panels are used in an otherwise steel structural frame. Individual structural elements may also be hybrids, or ‘composites’. What is indisputable is that an effective hybrid structure depends on mobilising the best characteristics of the constituent materials: timber’s strength to weight ratio, steel’s malleability and tensile strength. Increasingly, clients are demanding more than a cost-effective and/or aesthetically pleasing building, and sustainability is the central buzzword – the lowest possible carbon footprint being the ultimate goal. Timber, therefore, and particularly engineered timber in its many modern

32 | www.structuraltimbermagazine.co.uk | STMAG

forms, contributes more than an excellent strength-to-weight ratio and attractive appearance. It has proved to be the essential factor in the rise of a new generation of environmentally friendly buildings that point the way to a more sustainable future. In combination with other traditional structural materials, timber can also offer true sustainability at a cost comparable to conventional construction. Case studies that clearly illustrate this and are included in the publication include: Notre Dame Catholic College, Liverpool; Royal Shakespeare Theatre reconstruction, Stratford-upon-Avon; West Ham bus garage, London; Living Planet Centre, Woking; Keynsham Town Hall, Somerset; and Marks & Spencer, Cheshire Oaks, Ellesmere Port. Many of the projects have won prestigious awards, as well as achieving the highest levels of sustainability certification.


PEFC: YOUR ASSURANCE OF RESPONSIBLY-SOURCED

TIMBER PEFC-certified timber and woodbased products are at the heart of the UK construction industry.

PEFC/16-01-01

• • • • •

Legal & Sustainable Supply Credible Chain of Custody Responsible Procurement Thousands of Products Available Structural, Joinery, Flooring, Cladding • Meet Client Demands.

www.pefc.co.uk PEFC - Programme for the Endorsement of Forest Certification


TRADA

02 Meanwhile, some of the leading thinkers in cross-laminated timber (CLT) are included in a new TRADA Research Summary that examines future developments in the construction material. ‘Cross-laminated timber: experimental research’ features summaries from COST Action FP1004. The COST (European Cooperation in Science and Technology) website states that COST ‘is the longest-running European framework supporting trans-national cooperation among researchers, engineers and scholars across Europe’. One of the most interesting pieces of research looked at the earthquake resistance of multi-storey timber buildings made of CLT.

perpendicular to grain exhibited by CLT in comparison to other laminated products, such as glulam, to understand the possibility of forming linear structural elements that could be highly stressed in this direction due to holes, tapering of beams or connections. They argue that such an exercise could potentially find an answer to the problems faced by the glulam industry, where prevention of splitting in the perpendicular to grain direction often involves large cross sections or costly reinforcement techniques. CLT, if properly formed with suitably arranged cross layers, would provide the reinforcement required, the author explains.

free to those who register: www.trada.co.uk/nsts. The NSTS project was driven by a group of TRADA members who have taken the lead in specifying timber. Most have their own bespoke specifications that they have shared with BM TRADA to enable this new specification to evolve. Nick Milestone of Bowmer and Kirkland chaired the steering group, which included representatives from Kingspan, Arup and BM TRADA. Peer reviewing was provided by representatives from Smith and Wallwork, BAM Construct UK, Ramboll, Waugh Thistleton, KLH, Cullinan Studio and the NHBC, followed by a wider consultation among TRADA members.

As part of a PhD research project, the authors have carried out an extensive experimental programme on typical CLT connections and wall panels, providing data to calibrate advanced Finite Element (FE) models for non-linear static and dynamic numerical analysis. The paper highlights the lack of design data such as the ductility ratio, energy dissipation and over-strength factors required for seismic design. As such, the research aims to not only provide these data but also to propose a design method for the seismic analysis of CLT structures. Meanwhile, Karlsruhe Institute of Technology has conducted research exploring the higher tensile strength

Finally, work is soon to start on the revised version of the National Structural Timber Specification (NSTS), which will include structural hardwoods. Essentially, the NSTS gives the construction industry a set of best practice guidelines against which timber buildings can be erected. Some of the timber industry’s leading lights have been instrumental in helping TRADA put together the NSTS, which is available to download

Working with this group, TRADA has developed a comprehensive specification that covers information exchange, materials, fabrication, erection, protection and quality assurance. It is a real game-changer for an industry that has – to this point – relied on using documentation from previous projects. If you have a particular interest in this topic and would like to express your views please email: nsts@trada.co.uk. We will send you a feedback questionnaire. General feedback from users of the existing edition is naturally also welcome.

IMAGES: 01. Alnwick Castle Garden Visitor Centre and Pavilion, Northumberland. Courtesy: BuroHappold Engineering/Alan McAteer. 02. Marks & Spencer Cheshire Oaks, Ellesmere Port. Courtesy: Aukett Swanke.

34 | www.structuraltimbermagazine.co.uk | STMAG

For more information visit: www.trada.co.uk


Airtightness of board Based on independent studies

OSB/3 15mm

Durelis P5 TopFinish 15mm

Durelis VapourBlock 15mm 99% airtight (<0,001 M3/M2H PA)

Multipurpose construction boards for timber frame construction A

B

Durelis · Moisture resistant · P5 structural · Airtight · High impact resistance · Easy cleaning · Strong TG connection HydroFlam · Moisture resistant · P5 structural · Airtight · Fire reaction B-s2, d0 · Fire resistant REI60 option · Reduced charring rate

A

B

Applications: · Flooring · Racking · Roofing

VapourBlock Both construction boards are available with an airtight and vapour control layer

Innovative timber solutions for construction & interior. Let us work on your project with you.

www.unilinpanels.com


CASE STUDY // MEMBRANES

SCOTTISH BUILDINGS STANDARDS GOLD LEVEL FOR SOCIAL HOUSING PROJECT The former Alva Academy site on Queen Street in Alva, Clackmannanshire has been transformed into a new community for the town, with pre-erected and pre-fitted volumetric pods covered with Protect Membrane’s TF200 Thermo insulating breather construction membrane.

Consisting of 48 homes, the project by Tigh Grian, a developer of cost-effective and energy efficient volumetric housing, is intended to help deliver the Scottish Government’s aim of increasing the availability of affordable homes. The houses are built to the Scottish Building Standards Gold Level for Link and Paragon Housing Associations and Protect TF200 Thermo reflective membrane was used on the exterior of the volumetric pods. The homes are constructed using structural insulated panels (SIPS) covered with Protect TF200 Thermo insulating breather membrane to achieve high levels of thermal efficiency and airtightness. Pre-installation of the TF200 Thermo membrane during fabrication of the SIPS enables rapid installation of pods onsite with the added benefit of weather resistance to protect the pods until the outer cladding is fitted. The membrane’s high level of thermal performance reduces the need for conventional insulation by harnessing its reflective technology, thereby maximising the floor area of the homes. The U-value for the Tigh Grian designed envelope as a whole is intended to be less than 0.1 W/m2K with the upper limits for the roof, walls and floor being set at 0.09, 0.15 and 0.14 W/m2K respectively. The overall target has been achieved with the maximum air leakage rate of 1m2/m3/hr being attained by the factory quality controlled construction.

“Using Protect TF200 Thermo truly enables modern methods of construction,” says Christine Ryder, Product Manager for Protect Membranes. “It is easy to fit, making it ideal for use in offsite fabrication, and being available in a 2.7 metre wide roll means there is minimal wastage when covering timber frame panels. By replacing a standard breather membrane in the wall make-up with a reflective breather membrane such as the Protect TF200 Thermo, the U-value can be reduced from 0.22 to 0.19 W/m2K based on an insulation lambda value of 0.022, thereby increasing the thermal efficiency of the build.” Consisting of one, two and three-bedroom units, the homes arrive onsite almost ready to occupy with kitchens and bathrooms fullyfitted, and services are fully functioning as soon as they are connected to live site utilities. Protect TF200 Thermo is a high performance timber frame membrane with high tear strength, weather resistance and vapour permeability. It includes a highly reflective surface to enhance the thermal performance of the final wall construction. Protect TF200 Thermo meets the permeability requirements recommended by TRADA and the NHBC and is BM TRADA independently certified. The membrane is available in 1.5m x 50m, 2.7m x 100m and 3m x 100m roll sizes. To complement it, the use of VC Foil Ultra reflective air and vapour control layer can further thermally enhance any wall construction as well as contribute to improved airtightness levels and is also BM TRADA independently certified.

36 | www.structuraltimbermagazine.co.uk | STMAG

01

02 Project Queen Street, Alva ACHITECTS Machin Dunn & MacFarlane Developer Tigh Grian Client Link and Paragon Housing Associations Product Protect Membranes TF200 Thermo reflective membrane

IMAGE: 01-02. Protect Membranes and volumetric unit installation at the former Alva Academy site

www.protectmembranes.com Tel: 0161 905 5700 Email: info@protectmembranes.com


TWO MEMBRANES ARE BETTER THAN ONE.

VC FOIL ULTRA

Combining Protect VC Foil Ultra and TF200 Thermo provides a cost effective solution to meet demanding U-value specifications by enhancing thermal performance by up to 25%*. This gives you the flexibility to: • Achieve low U-values, as low as 0.21*. • Maximise your build area: no increase in wall thickness and no loss of internal floor space. • Significantly reduce the cost of your project. • Simplify your process. • Suit off-site or on-site fabrication. * Based on 0.035 insulation.

TF200 THERMO

Call Protect for help with your next project...

PROTECT MEMBRANES 2 Brooklands Road, Sale, Cheshire M33 3SS Tel: 0161 905 5700 Fax: 0161 905 2085 Email: info@protectmembranes.com Web: www.protectmembranes.com

A division of Building Product Design Ltd. Company Registration No: 3944123.


TALL TIMBER

The Vertical City

places as far apart as Austria and Australia. Indeed literally so: with its 10 storeys of cross laminated timber (CLT) panels shipped from Austria, the Forte Building in Melbourne took the height challenge to the next level in 2012.

a response to the fact that around the globe rural populations are gravitating towards the employment opportunities offered by large cities with consequent pressures on land availability and environmental quality. Quite how the logical extension of this new world of tall timber buildings might form the heart of entire districts – indeed complete new cities – and impact on the way we think about urban design and the evolution of sustainable communities was the subject of the third conference in Wood for Good’s Spring series, ‘Solid Timber House / Vertical Timber City’ and which provided one of the concluding events in this year’s London Festival of Architecture programme.

In parallel with these endeavours, conceptual proposals for very tall timber buildings in cities around the world began to appear. Vancouver architect Michael Green produced ‘Tall Wood’ in 2012, a study that showed how 20-storey commercial buildings might be constructed from engineered timber. In the short space of time since then several more projects have taken the challenge higher with the Treet Building in Bergen being the current tallest at 14 storeys, a height limitation caused not by its structural system but by city building regulations, the latter established in historic recognition of local wind conditions.

The UK capital is currently the global epicentre of solid wood construction with numerous large housing projects underway but moves afoot in North America may well see this situation change: recent awards by President Obama for designs for tall timber buildings (two prizes of $2m each have been awarded, with projects in Portland and New York under construction) have been followed a bill in the Senate “to accelerate the use of wood in buildings, especially tall wood buildings…” which, if voted into legislation, will become the ‘Timber Innovation Act of 2016’. Meanwhile in Vancouver an 18-storey timber building will be completed next year.

Structural timber is increasingly aiming for the stars. Peter Wilson, Architect and Director of Timber Design Initiatives Ltd and a familiar face within the timber sector from his days at Edinburgh Napier University, reveals some of the reasons why.

The modern world of engineered timber products is transforming the way we think not only about the design and construction of buildings but also the way in which our towns and cities can develop in the future. A bold statement perhaps, but who would have thought a mere twenty years ago that we would see the primary structure of substantial and ever taller housing developments being fabricated from cross laminated timber and glulam in densely populated areas of London, a city whose Building Acts were predicated as a consequence of the Great Fire of London in 1666?

01 The transformation arguably began with the nine-storey Stadthaus in Hackney’s Murray Grove by Waugh Thistleton Architects which, on its completion in 2008, was recognised as the tallest timber residential building in the world. The inherent potential of this development was not lost on architects and engineers: timber could now rise beyond the seven-storey limits of platform timber frame and eight and nine-storey residential blocks with solid timber structural systems such as Bridport House – also in Hackney – quickly came on-stream and elsewhere in

02 The impetus for wood in this early part of the 21st century thus continues upwards, as much a result of technological developments in engineered timber as it is

38 | www.structuraltimbermagazine.co.uk | STMAG

All this became apparent in Andrew Waugh’s outline of the situation in London and from his perceptions of where things are likely to go in the future, tall timber-wise. Ole Kleppe, Chief Project Manager of BOB, the Bergen and Omegn Building Society and developers of the aforementioned Treet building, followed, with a detailed appraisal of its structural design and construction, from which it began to be apparent that each of the projects profiled in the conference are quite different in structural conception and not, as many might have thought, simply variations of the platform method of construction generally utilised in the UK.


TALL TIMBER

03 This is certainly true of the 34-storey timber tower in Stockholm proposed by Aarhusbased C.F. Møller Architects, a hybrid structure consisting of a concrete core with solid timber floor plates, glulam beams, wood composite columns and double shell timber and glass facades. Building structures of this sort and to this height remains far from common and Julian Weyer explained not only the research project the practice is leading into what needs to be done to bring about the regulatory changes necessary to encourage greater use of timber in urban structures, but also the need to examine how this type of building might contribute to new conceptions of urban landscape. This latter emphasis on more humane environments and the opportunities to encourage new, sustainable communities formed the core theme of Matt Hoad’s presentation. Matt, a Senior Associate with HTA Design LLP, brought the company’s long experience in community engagement to bear and refocused attention on ways in which more humane, sustainable communities might be created: new urban paradigms resulting from the possibilities afforded by tall timber buildings. Sky scraping buildings are not new of course: it is technological advance that allows us to reconsider their structure and forms in engineered timber and Dmitri Jajich and Phil Obayda, engineer and architect respectively with SOM Inc., outlined the company’s ‘Timber Tower

Research Project’, into whether the Dewitt Chesney Apartments, a 42-storey concrete and glass tower built in Chicago in 1966 could nowadays be built in timber. The project goal was to develop a structural system for tall buildings that made use of mass timber as the main structural material and which could compete with concrete and steel whilst reducing the carbon footprint. ‘The Concrete Jointed Timber Frame’ result is a composite of appropriate elements: 200mm thick timber floor panels, timber framing within the structural cores, built up timber columns, solid timber shear walls, with reinforced concrete link and spandrel beams and wall joints of the same material. This hybrid solution not only provides stiffness to a timber structure of this height, but also the additional weight necessary to hold the building down in the Windy City – a conceptual project, yes, but one firmly grounded in the realities of cost.

04 The conceptual imperative for the Barbican Tower has much more to do with how far structural design in timber can be pushed at present and Simon Smith’s depiction of how an 80-storey timber tower might be constructed in the City is unquestionably the most challenging and provocative proposition around at the moment. Simon, a partner in Smith & Wallwork Engineers, is in the early stages of a collaborative research project with PLP Architecture and the University of Cambridge that aims to maximise the amount of timber used in

40 | www.structuraltimbermagazine.co.uk | STMAG

a tall residential structure. Their interim results are described as a “multiple stepbuttressed mega-truss perimeter structure in which load paths are optimised through diagonals”. More easily understood from the visuals, at first sight this appears to mean an impossibly slender stepped tower – whilst four times lighter than its concrete equivalent – that will require some impossible large section engineered timbers: at least until plant and equipment have evolved sufficiently to permit 2.5m square columns to be fabricated. At current rates of technological advance though, perhaps best to watch this space rather that cast early judgement since it is precisely this type of advanced research that is pushing the boundaries of technical development and the world of timber in to entirely new areas of construction. By way of contrast, one of the most innovative users of solid timber – Prof. Alex de Rijke of dRMM Architects – continues to counsel caution on whether we should be looking towards the construction of extremely tall timber structures in preference to exploring further the potential to form high quality medium rise (10-20 storeys) timber buildings and districts. Through a series of his own projects, this internationally renowned timber architect made a compelling case for just that. Time will surely tell which route will make most impact. Wood for Good’s next conference on the use of timber in housing design and construction - ‘The Custom Build Timber House’ - will take place in Bristol on Thursday 27 October 2016. For more information visit: www.woodforgood.com

IMAGES: 01. Stadthaus, Hackney, London 02. Treet Building, Bergen 03. Proposed 34 storey timber tower, Stockholm 04. Proposed Barbican Tower, London


What goes on your walls is a matter of taste! What goes into your walls is a matter of intelligence! Intelligent Airtight and Windtight building systems

At the forefront of sustainable design and construction to achieve low energy, PassivHaus and zero carbon homes

info@ecologicalbuildingsystems.com www.ecologicalbuildingsystems.com

AIRTIGHTNESS

THERMAL PERFORMANCE

ENERGY EFFICIENCY

SPEED OF CONSTRUCTION

our high Building using thermal performance, airtight, closed panel timber frame systems for floors, walls & roofs minimises the requirement for micro renewable technologies by embracing â&#x20AC;&#x2DC;Fabric Firstâ&#x20AC;&#x2122; principles.

Let Scotframe thermally engineer a solution for you.

Cumbernauld Inverurie Dundee Inverness Paignton West Sussex

01236 861200 01467 624440 01382 561772 01463 717328 01803 267680 01273 831896

www.scotframetimberengineering.co.uk


CASE STUDY // ACTIS HYBRID

TIMBER PROVES EXCELLENT THERMAL EFFICIENCY The largest designer and supplier of Swedish energy saving timber framed homes in the UK has carried out a thermal imaging test on one of its show homes to confirm that it has succeeded in building a thermally airtight home.

01 ScandiaHus, which has built around 4,000 homes across the UK, recently installed two products from the Actis Hybrid range in one of its three-bedroom show homes and carried out a thermal imaging study before deciding whether to switch to using the system in most of its properties. The 2,800 sq ft chalet style show home at its Sussex HQ uses vapour control layer HControl Hybrid and 150mm honeycomb design Hybris in the pitched roof to achieve a U-value of 0.14, and HControl Hybrid and 105mm Hybris in the walls to achieve a U-value of 0.16. While ScandiaHus architects’ own measurements showed the home had indeed reached an impressive thermal efficiency, they felt a thermal imaging test would be a helpful method to confirm their own findings. Infrared camera technology is able to clearly identify any heat loss from a building across thermal bridges such as structural timbers, door and window frames. These areas are frequently the weak point in any insulation system – usually because solid insulation products have to be cut to fit – leaving potential for leaks around awkward corners and joins. As the Actis Hybrid products are flexible

02 they can be squashed into and bent around corners to eliminate the bridging issues and thus ensure an airtight envelope. And it was this key issue which ScandiaHus wanted to confirm before taking the plunge and switching to an entire new system on all its future projects. The test, carried out with an outside temperature of 8 degrees and an inside temperature of around 21 degrees, involved infrared pictures being taken from both outside and inside. Analysis of the images showed no signs of any defect in the installation and no visible thermal bridging or leakage. It also showed homogenous temperatures over the surface of the walls – with testers concluding that the building was indeed very well insulated. “ScandiaHus wanted to improve their existing thermal elements using a cost effective method which would take into consideration the entire fabric of the building,” said Actis Southern Regional Sales Director Mark Cooper. “Using traditional insulation products to achieve these improvements would have resulted in greater wall thickness, large increases in material costs and more labour.”

42 | www.structuraltimbermagazine.co.uk | STMAG

03 ScandiaHus MD Peter Dawson added: “We were extremely pleased with the installation side of the material and believe that we can reduce insulation installation time by up to 30%. Previously, insulation was installed in two phases – the first in the factory and the second on site after the first fix was complete. “Due to the use of service voids and the ease of installation the insulation will now generally be installed in one phase on site. This also ensures that the air tightness of the building is not compromised by follow up trades. Other benefits were minimal wastage (just three black sacks) and site cleanliness. And as if that is not benefit enough, the Hybrid range does not produce irritant and messy dust when installing.” As a result, ScandiaHus will now use the Actis Hybrid range on many of the 90 or so homes it builds every year in the UK. For more information visit: www.insulation-actis.com

IMAGE: 01-03. Thermal images show no heat leakage from the Actis Hybrid range insulated walls of the ScandiaHus show home.


IMPROVEMENTS IN SAP* FROM USING THE HYBRID SYSTEM RESULTED IN LOWER PROJECT COSTS Peter Dawson, Housebuilder

HYBRID INSULATION - TOGETHER FOR THE FUTURE

HCONTROL HYBRID

HYBRIS

BOOST’R HYBRID

We know that making SAP improvements is high on your agenda. We also understand that minimal insulation thickness can help you to reduce overall project costs. So we have good news. The reduction in thermal bridging achieved by our Hybrid range is producing up to 15% SAP improvement*, proving that savings can be made on the DER vs TER without compromising on space.

Each Hybrid product combines both insulation and airtightness properties:

All Hybrid products can be used in walls and roofs, separately or together, to provide a high performance, total insulation system. They are certified to harmonised standards by accredited bodies, are CE marked and have LABC and NHBC acceptance acceptance when used in accordance with the certification.

HControl Hybrid, a thin multifoil insulation product with a built-in vapour control function and an unrivalled thermal performance.

Hybris, an innovative reflective insulation product providing an excellent thermal performance.

Boost’R Hybrid, a thin multifoil insulation product with a built-in breather membrane function and an exceptional thermal performance. *as calculated over a standard house using Hybrid model junctions compared with default junction heat losses

To find out more visit www.insulation-actis.com or call 01249 462888


CASE STUDY // ROOFING

A NEW HIGH IN ROOF INSTALLATION Peter Nordon, Managing Director at Smartroof, tell us what the Smartroof system can offer to housebuilders and how offsite manufacture can save your project time and money.

This effectively means the housebuilder has a clear open space within the attic to configure whatever way they wish. They are not constrained by any supporting walls.

01 Smartroof is a panelised roofing system aimed at national and large regional housebuilders. It’s an ideal solution for volume building and those housebuilders who use similar house types and build in multiples. The key benefits to the housebuilder are that we can give them certainty on cost and because we build in a factory we can guarantee the thermal efficiency of the roof. There are also significant health and safety benefits because we reduce the time spent working at heights and overall we radically alter the speed of construction. We can work on ‘supply only’ or ‘supply and fit’ as an additional option where we take entire responsibility from delivery of the roof to the actual installation, including arranging lifting plans and finally installation. We are typically reducing the build time on the roof, down from 12 days to one day. The unique thing about Smartroof is that we are the only panel system that runs gable to gable.

Labour seems to be a huge challenge – the availability of a qualified tradesman – and the construction industry hasn’t yet fully recovered from the recession, with not enough apprentices coming through, so there’s a major skills shortage. By transferring all the work in-house and offsite we can reduce the housebuilder’s reliance on skilled labour. What’s new in Smartroof? We are focusing on innovation to drive the thermal performance of the roof even higher to meet future regulations. Our Prism programme will deliver these enhancements but we don’t intend to launch them until 2018 when we see demand coming on stream for higher performance solutions. However in cases which currently require higher levels of performance we can offer the new Smartroof SIP roof which has been developed as part of the Prism programme. One of the benefits of our product being produced offsite is that we can guarantee the thermal performance of our product and we can do in-house thermal modelling so we know exactly what our roofs achieve and we know from our customers exactly what they are trying to achieve. Projects with large build programmes, and those on a tight deadline will benefit greatly as Smartroof can guarantee a quick turnaround.

44 | www.structuraltimbermagazine.co.uk | STMAG

02 What’s next for Smartroof? Why not a Smart house? We are developing floor cassettes for the second floor level to be installed at the same time as the Smartroof. We are also investigating other factory-built structures that we could combine into a comprehensive offsite house solution. We already have a crane and an installer team onsite for the roof installation so additional components could be installed quickly, making it easier again for the builder. We have significant design capabilities and can look at different roofing solutions, in fact we have orders in for a new mansard Smartroof which is a first for us. Despite being a challenging design we are confident that our system will deliver the same advantages to the housebuilder in a mansard format also. For more information visit: www.smartroof.co.uk IMAGE: 01. Gable panel being craned into position. 02. Keylite roof windows being fitted to the roof panel prior to installation.


Value

U


THE STRUCTURAL TIMBER AWARDS

Celebrating Timber Technology The Structural Timber Awards is a celebration of innovation, best practice and expertise in timber technology. Taking place on 19 October 2016 at the National Conference Centre, Birmingham, the Awards will showcase innovative solutions and ground-breaking developments from across the UK timber industry. Leo Bagnall, Managing Director of Resistant Building Products, described the event as: "An excellent evening. The whole evening was really well run and the awards were amazing. It is nice to see a huge amount of good structures all on one stage. Some really really great and innovative work has been done by the timber industry."

01 With over 200 exemplary entries received, packed full of outstanding, pioneering projects, products and people, this year’s Structural Timber Awards judges have had an onerous job of shortlisting entries for each category. The judges have been overwhelmed with the high standard and variety within every category. The full shortlist can be viewed at: www. structuraltimberawards.co.uk/2016-finalists Focusing on UK based projects using timber technology as the core structural component, the Awards include finalists from the residential, education, healthcare, commercial and self-build sectors and demonstrate how leading UK engineers and architects are designing world class buildings using timber innovations. The finalists will be battling it out across 15 categories including the Pioneer Award, Product Innovation and the highly competitive, Project of the Year. The Structural Timber

Awards will celebrate some of the most cutting-edge projects, inspirational people and ground-breaking products. The awards will be presented to the winners at a high profile dinner on the 19 October 2016 alongside Timber Expo and as a major event in the timber calendar, the event will attract 600 national business leaders and high profile decision makers from the construction industry. With over half the tables already sold, your attendance is imperative in order to network with some of the industry’s most influential people. Last year’s awards saw leading industry members raving about the success. Dirk Vennix, former Chief Executive of The Confederation of Timber Industries said: "It (the awards) has been a fantastic. It is really setting the bar for the whole industry. We represent the single voice of the whole timber supply chain and structural timber is a vital component to drive it forward. We are really pleased that this has got off the ground."

46 | www.structuraltimbermagazine.co.uk | STMAG

This is an event not to be missed. Hosted by Mark Durden-Smith, the event promises to be an enjoyable evening of celebrations and a high profile networking opportunity.

TICKET BOOKING If you would like to book tickets to the Structural Timber Awards - please visit: www.structuraltimberawards.co.uk Alternatively contact Event Director, Amy Pryce: T: 01743 290 001 E: amy.pryce@structuraltimberawards.co.uk Tables of 10 are available for just £1650 +VAT and the event presents a fantastic opportunity for you to host and entertain key clients.

IMAGE: 01. BSkyB Believe in Better Building project delivery team receiving the 2015 Winner of Winners award


Network with over 600 business leaders and high proďŹ le decision makers

EVENT DATE 19.10.2016 National Conference Centre, Birmingham

01743 290001


WINDOWS & DOORS

Closing the Market Gap Timber is emerging as the material best suited to meet the construction challenges facing us in the 21st Century. Sean Parnaby, Chairman of the Wood Window Alliance (WWA) and Managing Director of West Port Windows and Doors Ltd, shows how timber windows and doors are part of that revolution.

01 Today’s windows are fully factory-finished in an almost unlimited choice of colours using environmentally-friendly water-based coating systems, double or triple-glazed with U-values as low as 0.7w/m2k (or passivhaus), with options such as Secured By Design, 50-year service plans, aluminium cladding and bi-folding doors – all retaining their class and beauty and delivering the ultimate sustainable solution. At roughly 6.5 million units a year, the housing windows market, where most wood windows are sold, is roughly three times the size of the commercial market, where aluminium-clad timber windows are relatively stronger. Currently the wood window market is split roughly one-third new housing (private and social), to two-thirds home improvement.

But as the wood sector has only an 11% share of the new housing market, there is plenty of room for growth1. One of the natural areas of opportunity is timber construction, whether timber frame, panel, cross laminated timber (CLT) or glulam. We are natural bedfellows. There are two good reasons for the timber construction industry to choose windows and doors – sustainability and desirability. Sustainability: One of the most persuasive arguments for building with wood, central to the Structural Timber Association (STA) Fabric First campaign, is the low environmental impact of wood systems – particularly the carbon dioxide emissions saved when compared with other building materials. It seems counter-intuitive not to follow this argument through when selecting

48 | www.structuraltimbermagazine.co.uk | STMAG

a building’s windows. We know, thanks to studies by Heriot Watt University, Edinburgh, that choosing wood rather than PVC-u saves around 160kg CO2e over the 60-year service life of a building2. If a typical new house has 12 windows and two external doors, that’s a saving of around 2 tonnes CO2e. Timber windows also help housebuilders meet sustainable building scheme targets, as BRE recognises the Wood Window Alliance as a discrete standard and awards windows under the scheme top ratings – A+ for all timber windows, A+ for aluminium-clad timber windows with a clear internal coating and A for aluminium-clad timber windows with an opaque internal coating. In terms of operational energy timber offers the very highest level of thermal efficiency. Wood is a natural insulator, but advances in design and technology, particularly relating to seals, spacer bars and glazing systems, are driving energy-efficiency. Double-glazed wood windows are widely available with A energy-ratings and U-values can reach values as low as 0.7w/m2k. Desirability: Where quality and aesthetics are important, timber is the premium choice. Consider the importance of the impression the front door makes. The satisfying heft of timber windows and doors. The simplicity of redecorating – whether to change your colour scheme or just to keep them looking as good as new. Where price is all, PVC-u windows and doors remain a cheap solution, although the evidence suggests they are far from maintenance-free and will need replacing significantly earlier than wood windows. Ultimately wood is the choice for people who are prepared to pay a little more for design and quality, understanding that wood windows and doors will enhance and add value to their homes. Nowadays, home makeovers often include replacing PVC-u windows with wood to restore the character of a building.


WINDOWS & DOORS

02 03

In a survey published in December 2013, the Royal Institution of Chartered Surveyors (RICS) lists the top 10 crimes against period homes. Number One on the list is ‘Replacing original good quality sash windows with inappropriate modern aluminium or PVC-u casements and stripping out original period doors.’ And, according to English Heritage, the main threat to conservation areas is ‘unsympathetic replacement windows and doors – usually PVC-u’. What about maintenance? Perceptions of high maintenance are still a concern, but the reality is different. Today’s fully factory-finished windows are a far cry from the site-glazed, site-painted products of the past, and have a fundamentally different maintenance cycle. Maintenance consists of an annual wipe down and some oil for the hardware, and then a rub down and a coat or two of paint, typically every 8-10 years, with no need for timeconsuming sanding-down, burning off or chemical stripping. A recent service life

study by Heriot Watt University2 shows a typical wood window frame made to WWA standards can be expected to last around twice as long as a comparable frame made from PVC-u - 60 years. The same study shows that, although PVC-u windows typically cost less than wood, the longer expected service life of a WWA timber window gives it a lower whole life cost. So what does the future hold? The last Palmer report showed the installed value of timber-based windows in the housing market increasing from 19% in 2007 to 26% in 2012. In the 2015 report, Palmer concludes: “Overall, our forecast for the total window market in housing shows growth in every year up to 2019.” There are positive signs that people are beginning to understand how much timber window manufacture has changed. Our messages about new design and manufacturing processes, materials and coatings are starting to filter through and people are choosing timber windows instead of PVC-u again.

IMAGES: 01. West Port 02. Arden Windows 03. West Port provided the new holiday village at Center Parcs Woburn Forest with 4,000 timber windows and 2000 doors 04. Janex

04

Wood Window Alliance (WWA) The WWA is part of the British Woodworking Federation. The WWA has over 20 manufacturer members, all meeting strict quality, performance and sustainability criteria. Windows and doors are factoryfinished and tested to meet or surpass British Standards and to carry Chain of Custody certification. Scheme windows will meet all regulatory requirements, such as CE Marking and Part Q (Security) compliance and carry class-leading warranties on frame, coating, hardware and glazing. Members offer a wide range of bespoke shapes, sizes and colours, even different colours inside and out, while production schedules can meet just-in-time delivery requirements. For more information visit: www.woodwindowalliance.com

NOTES: 01. Palmer Market Research 2015 02. Whole Life Analysis of timber, modified timber and aluminium-clad timber windows: Service Life Planning (SLP), Whole Life Costing (WLC) and Life Cycle Assessment (LCA), Dr Gillian F. Menzies, Institute for Building and Urban Design Heriot Watt University, June 2013

STMAG | www.structuraltimbermagazine.co.uk | 49


CASE STUDY // WOOD PROTECTION

SPECIFYING THE CORRECT FINISH When it comes to wood protection, one question is asked more than any other – how long will it last? Silva Timber offer a few industry tips under its Sansin brand.

01

02

03

It’s difficult to answer this question, as there are so many factors to take into consideration. The design and orientation of the building, wood species, preparation taken, how translucent the finish is, exposure to sunlight and moisture among other variables, will all influence the life of the finish. More commonly used finishes are high-build oil and water-based finishes which have a greater viscosity and sit on the top of the wood creating a protective layer. Whilst these may give the appearance desired, over time they are likely to crack, split and flake.

Whether you want to keep the original colour of the timber, let it age to a silver grey or add a different tone, there’s a finish specifically formulated for your design. Solving the main concern for many specifiers, Sansin Clear UV was designed as the holy grail of timber finishes. This two-part system keeps the timber looking as good as the day it was installed and will keep the natural colour. If the timber is to be left to age it still needs to be protected from the elements. Sansin Wood Sealer has been developed to allow the timber to age naturally whilst protecting the cellular structure against moisture damage.

The key to an excellent finish is preparation – always ensure that the timber is clean and dry, for woods that contain knots and tannins use a primer (if the finish doesn’t contain one), sand the timber thoroughly. Sanding the timber thoroughly removes mill glaze and creates an even surface allowing the finish to penetrate the wood, providing an even, consistent and longlasting finish. It is recommended to always flood the surface to the point of saturation (approximately 5-6 wet mil). If using a spray application remember to back brush following the grain pattern to ensure consistent penetration.

When deciding on a coloured finish, it’s important to understand that the effect of the finish will vary depending on texture, grain, colour and porosity, so we’d recommend checking the colours on samples of the timber being used. There are various staining options; natural and translucent tones, which let the beauty of the wood shine through or saturated to ultra saturated tones that provide a more solid colour appearance to the timber.

For more information visit: www.silvatimber.co.uk/wood-care.html

Combining the benefits of oil and waterbased finishes, Sansin have engineered a highly penetrating, environmentally friendly finish range that has a very low VOC composition. The water base is used to carry modified natural oils and resins deep into the wood’s cell structure, which bond directly with the wood substrate once the water has evaporated. This enables the wood to breathe whilst forming a tough, durable barrier that won’t crack, peel or blister.

50 | www.structuraltimbermagazine.co.uk | STMAG

IMAGE: 01. Engineering students at Southampton University used Sansin water-borne alkyd finish in Muskoka Red on their winning design for an eye catching appearance. 02. Beautiful Western Red Cedar finished with Sansin SDF in Cocoa, a semi-translucent tone which allowed the natural beauty of the grain patterns to shine through. 03. ThermoWood finished in Sansin SDF Autumn Gold


The Experts in Speciality Timber Products

When choosing a material for your project, appearance and performance are of paramount importance. Silva Timber supply the finest selection of speciality timber cladding, decking, fencing and roof shingle products in the UK. Specialising in Western Red Cedar, Siberian Larch, ThermoWoodÂŽ and a range of hardwoods, the range is supported by a knowedgable customer support team, factory pre-finishing and fire treatment services, industry leading website, technical specifications and downloadable BIM objects. For the natural choice, speak to the timber cladding experts.

0151 495 3111 (Cheshire) 020 8150 8055 (West London) For more information visit:

www.silvatimber.co.uk enquiries@silvatimber.co.uk

PEFC/16-37-174


STA GUIDANCE

Fire Compliance Essentials Martin Milner, Technical Consultant at the Structural Timber Association (STA) discusses fire safety regulations during the construction phase and the role of trade associations in mitigating this risk.

01 Today, those employed within construction would not enter a building site without wearing a hardhat, high visibility vest and steel capped boots. However, just as integral as the physical equipment, is the practical training and guidance on health and safety issues, such as fire risk safety. Non-compliance with fire risk regulations can negatively impact on a companyâ&#x20AC;&#x2122;s reputation and bottom line. Recently, a court case involving the Health and Safety Executive (HSE) resulted in a fine for an architects practice for not following the relevant guidance available. This highlights

the need for all construction professionals to be informed on the risks of fire, and their own legal responsibility in the process of mitigating these risks. Trade associations have an integral role to play when it comes to instilling safety regulations, such as fire risk mitigation into the industry mindset. While the dangers of fire are real, there are procedures, regulations, guidance and resources available from trade associations, such as the STA, that can greatly mitigate that risk.

52 | www.structuraltimbermagazine.co.uk | STMAG

The Construction (Design and Management) Regulations 2015 (CDM 2015) place the onus and responsibility for fire safety and mitigation with the person who specifies the building material. In a traditional tender process, this is usually the project architect, and where the design is contracted out, this can be either the project architect or design and build manager, dependent on the detail within the project contract. Crucial to the process of complying with these regulations and identifying, eliminating or mitigating fire risk is the


Engineered to perform KronobuildÂŽ OSB Range

Engineered for strength, OSB brings dimensional stability and load bearing capabilities to building structures. OSB2 is strong, uniform, dense and very workable, with OSB3 for humid conditions. The flooring stands out with high load-bearing capacity, durability and resistance. Further range innovation includes OSB Firestop designed to resist burn-through and reduce flame spread; OSB Reflex reduces radiant heat, keeping structures cooler in the summer and warmer in the winter and OSB Airstop saves energy by forming an airtight barrier. As all have environmental, quality and performance accreditation the range is a strong contender for any project. To order your free samples, email: samplerequests@kronospan.co.uk or visit: www.kronospan-express.com KronobuildÂŽ product range: OSB: OSB 2, OSB 3, OSB 3 Flooring, OSB Firestop, OSB Airstop, OSB Reflex. Particleboard: P5 Particleboard Flooring, P2 Particleboard, Weatherdek, Weatherprotect, Fibreboard: MDF, Lightweight MDF, MR MDF, FR MDF, Deep Router MDF, HDF


STA GUIDANCE

consideration of the physical environment of the construction site. According to the HSE, a sound way of conducting an onsite fire risk assessment involves a number of steps. Firstly, the person responsible should identify potential hazards, paying attention specifically to how and where a fire could start and what could burn. Next, people at risk need to be determined such as employees, contractors and visitors. They then should follow an evaluation and action stage, where potential hazards are removed and a clear plan of action can be recorded and trained for. Alternatively, by using the STA’s ’16 Steps to Fire Safety’ document, the responsible person can ascertain the risks to be aware of and how they can be mitigated. When used alongside the STA members’ mandatory Site Safe guidance – which is accepted and recognised by the HSE, Chief Fire Officers Association (CFOA) and insurance companies – construction sites can ensure they have assessed the onsite fire risks thoroughly. This relates to CDM 2015 regulations 9, 11 and 29, as well as HSG 168, surrounding using the principles of prevention, as far as reasonably practical, to remove/reduce the fire risk in choice of build materials, the risk to members of the public as well as to buildings outside of the site boundary. When considering fire mitigation within the planning stage of the construction process, the construction material of each building needs to be considered and categorised in order to produce the most accurate safe distance requirements. The STA ‘Design guide to separating distances during construction’ considers the different structural timber build methods and the safe distances required between each building. The guide uses an easy to read table format to provide the safe separation distance for the building, with

02 distances calculated using the building material, the storey height of the building and the size of the emitter face. Using the guide, a four-storey building with a 15m-emitter face (a building greater than 600m2) would require the following separation distances dependent on the specific building material chosen: • Standard timber building system – 18.5m • Reduced fire spread material – 12.75m • Fire spread resistant material – 7.00m In certain circumstances, when if for example, the project involves construction against an existing building or where the recommended safety distances can’t be applied, it is best practice to seek the advice of the structural timber provider, a fire engineer or contact the STA technical advice line.

54 | www.structuraltimbermagazine.co.uk | STMAG

The choice of structural timber frame as a building method is becoming increasingly popular across the construction sector due to its speed of build, comparatively low cost and energy efficient qualities. As with all construction process, the construction phase risk assessment for fire spread needs to be considered and the STA guidance supports the industry achieve fire risk mitigated forms of construction.

IMAGES: 01-02. Identifying, eliminating or mitigating fire risk on the construction site is essential

FIRE RISK MITIGATION The STA in conjunction with CITB have produced a Guide to Fire Risk Mitigation video which can be viewed at: http://bit.ly/29USF2E


It’s all about confidence.

Proven preservative protection for exterior and ground contact timbers

Proven fire retardant protection for interior and exterior timbers

Tried, tested and trusted protection for timber.

Real World Thinking. Real World Performance.

www.tanalisedtimber.co.uk

www.archfiretreatments.co.uk

File: 213169-6-15 TIC PTG Treatments

TANALITH, DRICON and NON-COM areAd registered trademarks of Arch Timber size: US A4 Product Size Protection. (210mm wide Arch Timber Protection is a Lonza company. Use pesticides safely. Always read217004-12-15 the label and product information before use. File: TIC PTG Treatments

x 278mm high)

Ad size: US A4 1/2L (178mm wide x 126mm high)

@ArchTimberPro

See our latest project on pages 16 & 17

Protection from the elements Timber preservation • Fire retardants • Decorative and protective coatings The new Sentrin range of timber protection technologies, only from PTG

Protection from the elements

• Timber preservation • Fire www.ptgtreatments.co.uk retardants t: 01777 709855 e: info@ptgtreatments.co.uk • Decorative and protective coatings

YOUR PARTNER IN TIMBER PROTECTION

The new Sentrin range of timber protection technologies, only from PTG

217004-12-15 TIC PTG Treatments.indd 1

24/11/2015 09:31


CASE STUDY // FIRE PROTECTION

APPROPRIATE ACCREDITED FIRE TEST FOR A PIR INSULATED TIMBER FRAME PANEL There are many fire boards available to the UK construction market that provide passive fire protection. However, the difficulty in choosing the correct board lies within the fire testing performed in a specific application. IPP Black Mountain discusses the appropriate accredited test methods for a PIR insulated timber frame panel.

01 When applying a fire protection board to any system it is important to confirm it is tested in that application. A fire board cannot be tested in isolation and then applied to a timber frame wall for example and must be tested in the environment of its intended use to ensure it is suitable for its intended purpose. In order to add confidence to the performance of Magply advanced fire and sheathing board in a PIR insulated 140mm timber frame wall application, Black Mountain recently subjected the product to a BS EN 1364-1: 2015 fire resistance test. BS EN 1364-1: 2015 is generally considered to be a more onerous test procedure, when compared against BS 476: Part 22: 1987. Dan Fitzsimmons Technical Officer for Exova Warringtonfire stated: “Fire boards for construction cannot be tested in isolation when being used as part of a system wall

and must be tested with the entire wall build up to provide actual performance figures, It is possible to provide testing for a fire board’s reaction to fire performance, however this performance will not be sustained when the board is applied to other material or a system such as a timber frame wall panel containing insulation”. Black Mountain approached this test by seeking the assistance of Oakworth Homes to install a full scale timber frame wall of 3m x 3m at Exova Warringtonfire’s UKASaccredited fire testing laboratory, using the methods you would expect to find during usual timber frame manufacture with nail guns and impact drivers. It was important that this test mirrored an everyday, real-life installation incorporating the complete system wall of a 9mm Magply Fire and Sheathing board, 110mm PIR Insulated 140mm timber frame and plasterboard.

56 | www.structuraltimbermagazine.co.uk | STMAG

John Capper, Managing Director of Oakworth Homes who supported and witnessed the full scale test commented: “We use Magply in our manufacturing process where we highlight a need to improve the wall system’s fire resistance performance to either a B or C-categorised panel as advised by the Structural Timber Association (STA) safe-separating distance guidance documents. Magply allows Oakworth to cut and install the board to the panel without changes to our manufacturing process. Magply is also the only product with the appropriate ‘whole system’ fire resistance test evidence in a PIR insulated timber frame application therefore we are able to provide Oakworth customers with the confidence they require.” The tested assembly achieved 75 minutes fire integrity to BS EN 1364-1: 2015. This is a remarkable achievement for a sheathing board with a thickness of just 9mm. IPP Black Mountain provides timber frame manufacturers with the confidence that Magply advanced fire and sheathing board in a PIR insulated wall application is able to meet the demanding fire safety requirements of today. For more information contact: Tony Reed - Mob: 07769 317309 E: asr@intpetro.com W: www.magply.co.uk IMAGE: 01. Magply fire protected PIR insulated wall test to BS EN 1364-1: 2015 passing 60 minutes at around 1000 degrees


NEW EXOVA TEST CERTIFICATION FOR PIR INSULATED TIMBER FRAME WALLS

BS EN 1364-1: 2015 CERTIFIED and TESTED in accordance with:

ADVANCED FIRE AND SHEATHING BOARD

BS EN 476 (Parts 6&7) Class 0 Non-Combustible CERTIFIED and TESTED in accordance with: (surface spread)

BS EN 476 EN ISO 1182-2010 (Parts 6&7) Class 0 Non-Combustible spread) Class(surface A1 Non-Combustible

Magply advanced fire and sheathing board Whether specifying for domestic or commercial new build or refurbishment, passive fire protection is a major consideration. This coupled with Magply’s low carbon footprint makes it the perfect choice for: 

Passive Fire Protection for Walls, Floors & Ceilings.

Non-Combustible Sheathing & Infill Boards.

Fire Safe OSM for Timber Frame & Park Homes.

Render boarding.

Non-Combustible Soffit Lining.

Lift Shaft Lining.

All applications requiring non-combustible boards.

BS 1182-2010 EN 476 EN ISO

Non-Combustible (Part 22 Class timberA1frame) 91 mins fire integrity and 86 mins fire insulation for 9mm board

BS EN 476 BS EN 594

(Part 22 timber frame) 91 mins fire integrity and 86 mins fire insulation for 9mm board 2011 Timber Structures

EN12572 594 ENBS ISO 2011 Timber Structures Water Vapour Transmission

THE ULTIMATE IN FIRE PROTECTION! 91 mins fire integrity and 86 mins fire insulation

For more information call Tony Reed For more information call us on on 07769 317309 01745 361911 or visit www.magply.co.uk www.magply.co.uk


TECHNOLOGY TALK // TIMBER CHAP

Panels or Boards? Our resident timber expert picks up on the differences in product performance between boards and panels and why the terminology in the industry can cause confusion.

You say panel, I say board. What’s the difference and do we care or rather should we care? Well I am waving a flag for the return of the word board – the plank of history and engineered product of today. The reason I raise this is because as long as we continue to call the products we use ‘panel products’ the industry will continue to lose the respect of the structural work that the particular building element plays in the design, purchase and installation process which ultimately can lead to failure and cost increases. There are many words in the English language that slip into the wrong usage but what I am suggesting is that the word ‘panel’ is making a takeover bid for the word ‘board’ and the consequence of its success is the downgrading of the structural importance of the product. The word panel is now used to describe all products that span a space – which is wrong.

What is in a word? Perhaps we should look at the dictionary definition:

Panel = a flat or curved component, typically rectangular, that forms or is set into the surface of a door, wall, or ceiling.

Board = a thin, flat piece of cut wood or other hard material, often used for a particular purpose.

In a structural timber building the reference to panels as cladding has its place but does nothing to make the uninitiated aware of the strength and character needed in a product that has to do a structural job as in the word ‘board’.

If we want to take the product seriously we should all use the word board to get to grips with the importance of the product and to ensure we take it seriously as a product in the design team, allocate the right consideration when buying and treat it with respect when installing.

BEAMS & JOISTS SPAN A GAP 2D thinking and design

BOARDS SPAN A SPACE 3D thinking and seldom any design

PANELS COVER STRUCTURAL ELEMENTS For weather protection or aesthetics

Here is a list of board applications in structural buildings that you should always bear in mind: COMMON STRUCTURAL APPLICATIONS

STRUCTURAL CHARACTERISTICS

CURRENT APPROACH FROM DESIGN TEAM INVOLVEMENT

External facing cladding

to resist wind loadings and be capable of holding fasteners

choice of colour

Render or other rainscreen backing

to resist wind loadings, weight of weatherscreen and be capable of holding fasteners

by others!

Frame sheathing

to resist wind loadings and be capable of holding fasteners

from BS tables or software output

Airtightness layer

can be frame sheathing layer

not a structural decision

Internal lining

can be frame sheathing layer

not a structural decision unless cross laminated timber (CLT)

Roof decking

to resist wind uplift and horizontal forces, vertical loads from weather(snow) and roof finishes, plant and access

from BS tables unless CLT

Roof sarking

as decking

from BS code tables/or tradition

Floor decking

to resist vertical loads from finishes, plant and people

from BS tables unless CLT

Floor diaphragm

to resist horizontal wind uplift, vertical loads from weather(snow) and roof finishes, plant and access

from BS code tables/or tradition. Seldom calculated

Ceiling lining

can be the same as floor diaphragm but typically aesthetic only

from BS code tables unless CLT

58 | www.structuraltimbermagazine.co.uk | STMAG


RESISTANT BUILDING PRODUCTS LTD

R

BBA ACCREDITED MGO BOARDS

15/5255

Resistant Building Products offer an exceptional range of new age Magnesium Oxide (MgO) building boards. They have been specifically developed to offer sector leading fire resistance performance and high engineering strength, making them the number one choice for the most demanding construction and offsite manufacturing projects. Multi-ProTM A high performing passive fire protection wall liner with certified 1 hour fire resistance to BS EN 1364-1:1999. Multi-Pro MoistSureTM Safe, clean, easy cut & fix high strength tile backer board capable of holding over 100kg/m2, tested to BS EN 1324:2007. Multi-ProXSTM A certified Category 1 structural sheathing board with outstanding racking performance to BS EN 594:2011. Over 2 hours fire resistance according to BS EN 1364-1:1999. Multi-RendTM Direct render carrier board capable of accepting a multitude of renders, brick slip and cladded finishes.

PROPERTIES

APPLICATIONS

FIRE RESISTANT & A1 NON-COMBUSTIBLE

WALL, FLOOR & CEILING LININGS

BREATHABLE

BATHROOM & OFFICE PODS

EASY TO CUT, FIT & FIX

TILE BACKER FOR BATHROOMS & WET AREAS

MOISTURE RESISTANT & DIMENSIONALLY STABLE

COLD ROOM SANDWICH PANELS

IMPACT RESISTANT & DURABLE

SUITABLE FOR TIMBER OR LIGHT STEEL FRAME SYSTEMS

MOULD & DEGRADE RESISTANT

SOFFIT & FASCIA BOARDS & MUCH MORE....

®

www.resistant.co.uk For further information or to receive a presentation on the products please contact our office at +44 (0) 28 9074 9400

M2 Business Park | 122-126 Duncrue Street Belfast | BT3 9AR


TECHNOLOGY TALK // TIMBER CHAP The dilution of the importance of the board product and its applications is easily discovered when design teams – if noted at all – quote a code reference. Buyers buy on the scant details from design teams and rely on manufacturers sales brochures. Constructors leave it to the abuse of the great British weather – perhaps this is the true origins of the word panel beaters! The one exception to all this, is the great

grandchild of the wooden board, the cross laminated timber (CLT) panel. The CLT product is approached with a genuflection and the expert supply chain maintains its grip by insisting on engineering and avoiding final design by generic span tables. I started this article on the desire to wave a flag for the term board over panel. I now want to wave a flag of warning to avoid

future construction problems. Of course defects can occur and there are some classic issues which we should all be aware of and avoid. A rogue’s gallery of issues may lead to solicitor’s letters piling up at my wooden front door but in principle, can I wave my final flag on common issues the industry should be aware of see Table 01 below.

Table 01: Classic Board Errors

01. WRONG PRODUCT IN THE WRONG PLACE CE marking warning – ensure that you buy from a known supply chain and that the CE mark refers to the codes the product complies with/or is the application you require. The declaration of performance (DoP) should be available which states what has been tested, the test authority involved and provide the scope of product structural applications. A panel product with only limited declared performances would mean it is not suitable for structural applications.

02. ABUSE OF THE PRODUCT TO WEATHER DURING CONSTRUCTION The design of a building must take into account the construction process and that products may become distressed if left to long periods of water saturation. The list of weather induced defects includes freezing, excessive drying from the sun and humidity induced increased moisture contents. The design team, buyers and constructors must ensure the product or process accounts for the British weather.

THERE IS WEALTH OF GUIDANCE AND INFORMATION AVAILABLE FOR REFERENCE FOR ANYONE DESIGNING, SPECIFYING OR WORKING WITH WOOD BOARDS (EVEN IF CALLED PANELS.) PANEL GUIDE

Published in 2014 by the Wood Panel Industries Federation, TRADA Technology and the Timber Trades Federation

WOOD PANEL INDUSTRIES FEDERATION

www.wpif.org.uk

STRUCTURAL TIMBER ASSOCIATION

www.structuraltimber.co.uk

BS EN 13986:2004

Wood-based panels for use in construction. Characteristics, evaluation of conformity and marking.

BS 8103-3:2009

Structural design of low-rise buildings – Part 3: Code of practice for timber floors and roofs for housing

EN 1995-1-1 (EUROCODE 5)

Design of timber structures – Part 1-1: General – Common rules and rules for buildings

60 | www.structuraltimbermagazine.co.uk | STMAG

03. ABSENCE OF RESPONSIBILITY FOR BOARDS IN THE CAVITY Boards in the cavity need to be considered in the design and build process including the durability and robustness of the product and its protection during the construction process. Design co-ordination with the cladding and constructor is required. Fixing cladding and rainscreens to structural frames is often wrongly assumed to be the responsibility of the cladding company. Cladding companies are not in apposition to determine the board to which they are fixing and many construction errors occur in the incorrect fixing to the board.


FIRE RATED ACOUSTICS WEATHERABILITY WALLS

High Performance Building Boards for Structural Timber Applications

FLOORS ROOFS

As a major supplier of building boards and facade solutions, RCM is committed to developing products, applications and services to meet the needs of the structural timber sector.

SHEATHING PARTITIONING FACADES

Our approach is competitive, flexible and customer focused – providing a complete service, from initial advice through to delivery under our ISO9001 certified management systems.

TRIED AND TESTED FOR TIMBER TECHNOLOGY An adaptable calcium silicate based fibre cement building board, with A1 Non-Combustible certification, offering excellent fire properties as well as high levels of dimensional stability. Y-wall is used as a fire rated sheathing board, used extensively on engineered timber structures, the product is used behind all types of facade solutions, as well as in floors and roofs.

TF

The super smooth, high density, reinforced, structural building boards are manufactured in various lengths, widths and thicknesses and are used as sheathing panels, internal wall lining, tile backer board, flooring, sub-flooring, roofing and for the manufacture of Structural Insulated Panels systems. A highly versatile A1 Non-Combustible cellulose fibre cement building board, offering excellent strength, weathering, acoustic and fire resistant properties. Multipurpose TF can be used in a wide range of structural timber applications including internal and external wall linings, roof underlay, soffits, flooring, tile backer and a wide range of OEM applications.

For more details please call 01782 567080 or visit www.buildingboards.co.uk


CASE STUDY // PANEL PRODUCTS

VERSALINER – REDUCING COSTS, RAISING STANDARDS Magnesium oxide (MgO) board offers many intrinsic benefits to the structural timber sector. One such product – the Versaliner A1 non-combustible board (when tested to EN 13501-1 – has fast become the sheathing board of choice for many timber frame manufacturers and housing developers.

become popular for use in developments where dwellings are in close proximity to floodplains.

01 Since the high-profile cases of arson which hit the timber frame industry hard, the construction sector has succeeded in fighting back by developing increasingly robust and reliable solutions which specifically address ‘reaction to fire’, as laid out in the STA’s white paper and Product Paper 4 Guidance document. Originally developed in 2013 – Versaliner was designed to provide the fire performance timber frame developments needed while simultaneously driving cost efficiencies and installation advantages. For example, the score and snap cutting process removes the need for electrical cutting equipment onsite. As well as delivering significant time savings, this method helps to reduce the health and safety risks traditionally associated with

mechanical cutting techniques. Moreover, as compared with cement-based boards, a magnesium oxide board such as Versaliner offers a relative lightweight construction which facilitates an efficient installation programme. Further onsite efficiencies are also gained through the prefabrication of panels to specified sizes. Available in both 9mm and 12mm thicknesses up to a maximum board size of 3000mm x 1200mm, Versaliner is readily available through nationwide stockists – making procurement both simple and flexible. Having undergone continuous product development to ensure the product continues to meet changing technical and construction guidance, Versaliner offers impeccable tolerance to high levels of moisture. As a result, the product has

62 | www.structuraltimbermagazine.co.uk | STMAG

Versaliner has also become a preferred specification in developments that are at risk of disproportionate collapse, such as the Aubrey Street apartments in Hertfordshire. As a substantial project for timber-frame specialists, Taylor Lane, this £1.4 million, five-storey development of 1,700 sq m accommodated 23 individual apartments. Having chosen Versaliner over traditional alternatives such as OSB or plywood, Taylor Lane was extremely pleased with the product performance. A spokesperson said: “Versaliner enabled us to safely build on a site where fire risk was a significant factor. Without it, we’d have struggled to proceed. We’re more than happy with the product, it’s very competitive pricing and ready availability.” While Versaliner has been proven onsite and undergone extensive fire testing, the Euroform technical team can also work with clients to obtain non-standard fire tests where specific periods of fire resistance are specified. For example, Versaliner has recently been tested by EXOVA and been shown to provide fire resistance in spandrel wall separations. For more information visit: www.euroform.co.uk IMAGE: 01. Versaliner was used by Taylor Lane at Aubrey Street, Herefordshire


Render Base Board & Carrier Panel

Rendaboard is tested and approved with most major coatings ®

• Class ‘0’ for fire resistance with A1 non-combustible option available • BBA approved with weber.rend MT System • Euroform’s Rendaboard is stocked and available at the majority of trade counters and builders’ merchants across the UK

Contact our technical/sales team for a quotation

01925 860999

TECHNICAL APPROVALS FOR CONSTRUCTION

www.euroform.co.uk

This advert is a general guide and specific technical advice is recommended before proceeding with any transaction. Full technical information available on 01925 860999.


ADVERTORIAL

THE FIRST CHOICE FOR COMMERCIAL AND DOMESTIC STRUCTURAL FLOORING EGGER UK specialises in the design and manufacture of industry-leading commercial and domestic structural flooring applications for UK housebuilders.

and industrial flooring projects. Each board has enhanced moisture resistant properties and is manufactured using sustainable raw materials on one of the most sophisticated production lines in Europe. They each have a tongue and groove profile created using diamond-tipped tooling for stronger and tighter fitting joints.

Satisfying the needs of builder’s merchants and housebuilders as well the construction market, EGGER is home to some of the most advanced products and systems in the market. Its Advanced Structural Flooring System is designed to help housebuilders save time, money and manpower on their projects without compromising on quality. The EGGER Advanced Structural Flooring System uses a simple six-step installation process which is suitable for both masonry and timber frame builds. It is based on the EGGER portfolio of structural tongue and groove chipboard flooring panels which includes P5 raw boards, Peel Clean boards and the market leading EGGER Protect board. As well as this, the company also offers OSB3 and OSB4 panels and its new OSB HDX board for use on mezzanine

Meanwhile the EGGER Advanced fitting system has been designed to reduce installation times and minimise squeaky floors. The boards also reduce weather related stoppages as they can be fitted in light rain conditions and there’s no need for joint tape when sealed with EGGER Joint & Joist D4 Adhesive. To give installers added peace of mind, the entire EGGER Advanced Structural Flooring System is backed by a lifetime guarantee. The specialist boards are produced on EGGER’s state-of-the art continuous chipboard line at Hexham in Northumberland. As one of the most technically advanced production plants in Europe, the facility has been subject to investments reaching over £250 million since 2007. Dan Soulsby, EGGER Category Manager for Building Products, explains: “We strive to give our customers innovative solutions, exceptional product quality, value for money

64 | www.structuraltimbermagazine.co.uk | STMAG

and complete peace of mind on every floor they lay. No other engineered flooring chipboards provide the same outstanding protection and structural properties or offer installers so many laying and fixing benefits. “Each product within the EGGER Advanced Structural Flooring System has been manufactured to the highest standard and the lifetime guarantee reinforces our commitment to quality and belief in the products and system. “We are currently investing in a new T&G line at Hexham with additional processing facilities planned for later this year. Our continued investment in existing plants and both new and existing products lets customers know they are being supplied with the best quality products manufactured on the most technologically sophisticated T&G facilities in Europe. “We want to further secure our position in the UK construction market by providing security of supply to our customers for many years to come, especially at a time when housebuilding needs to grow. We are here for the long term and our aim is to ensure we continue to be a trusted supplier through innovation and investment. “Regardless of the size of the project, whether it’s a large-scale housing development, self- build, renovation, property conversion or home extension, it is our aim to be the indisputable first choice for anyone who wants peace of mind in their work when installing a structural chipboard floor.”

To find out more, contact the EGGER building products: Tel: 0845 602 4444 Email: building.uk@egger.com www.egger.co.uk/building


Egger Advanced Structural Flooring System. Lifetime guaranteed. www.egger.com/lifetime

We are so confident in the quality and performance of our boards, adhesive and fitting method, that when all 3 are used in combination we provide a unique lifetime guarantee. For more information, terms and conditions on the EGGER Advanced Lifetime Guarantee please contact us on the Building Products Hotline t 0845 602 4444, visit www.egger.com/lifetime or email building.uk@egger.com


ADVERTORIAL

ECONIC PERFORMANCE BOARDS – THE MULTI-PURPOSE SOLUTION TO FIRE, ACOUSTICS AND STRUCTURAL SPECIFICATION Increasingly, timber frame OSMs are choosing Econic for a range of applications, secure in the knowledge of its excellent structural racking properties, dimensional stability, robustness, fire resistance and impact strength.

One of the many critical decisions before undertaking a large scale project is choosing the correct materials. The right choice of board can make significant differences to the depth of through wall make ups and internal wall linings for passive fire protection of the building envelope. As a consequence, the right board can improve net floor areas and reduce the building footprint, thereby delivering increased profitability for the end user or developer. Decision-makers in offsite manufacturers (OSMs) and the timber industry are waking up to the versatility of Econic Board, supplied by Glasgow-based company, Duncryne, as a result of its proven capability to provide low-cost fire, structural, acoustic and decorative solutions. A firm supporter, Robin Dodyk, Technical Director of Oregon Timber Frame Ltd, one of the UK’s largest independent timber frame manufacturers, stocks and uses Econic boards in manufacture-friendly 2.40 and 2.70m lengths for fire mitigation purposes. “In the main, we use the boards to help achieve fire resistance /separation during

construction and as cavity barriers. We have tried a number of similar boards, but have found that Econic best suits our manufacturing processes. Also, we have had to make no changes to our machinery to use Econic boards and will continue to use them since they also go through manufacture with no change to the process. We also value Econic boards’ stability and the fact that it is not too brittle which gives us robust panels that can survive the journey from factory bench to installation on site.” The density of Econic means, improved acoustic performance and the fire credentials for timber frame sheathing results in a reduction in the overall depth of wall make ups leading to lighter panels and offering efficiencies in distribution. The robust nature of Econic also mitigates the risk of damage to goods in transit. Coventry-based Innovare Systems is another OSM which has embraced the flexibility and durability of the Econic system, employing it for a recent set of school construction projects.

66 | www.structuraltimbermagazine.co.uk | STMAG

Alex Banks, Project Manager said: “As an offsite manufacturing company, we need strength in the panels. Econic has been tested for fire and acoustic performance so assessing the data, we used the 12mm board on project which required 60 minutes fire protection.” On the issue of fire resistance, building authorities in Scotland have ruled that no combustible material can be used in fire compartment walls. The need to achieve pull out loads to support medical equipment and cabinets in several Scottish hospital construction projects led to the use of Econic boards rather than plywood to meet the criteria for non-combustible A1 rated materials in fire compartment walls. On the current Edinburgh Sick Kids Hospital project, Duncryne is providing a proven cutting and bonding service to guarantee a fire-safe environment. OSMs in timber frame and SIP systems choose Econic boards for a variety of uses depending on the criteria they require to meet. For many it provides excellent racking strength with panel formats up to 3m single spans. Their large formats introduce efficiencies in labour and material costs. OSMs like Econic boards because they offer a robust, lightweight, multi- purpose solution that is both easy to handle and to work with. There are no hazardous substances for production lines to manage and cutting the material is similar to the process with wood based products. The Econic Performance board range is a true value proposition which introduces efficiencies in design, provides simple, easy to install make-ups that afford the contractor savings in labour and material, and ensures enhanced value for the occupier.

For more information visit: www.econicboard.com


TM

TM

delivering multi-purpose solutions to the Timber sector UK Wide Distribution with TM

The

TM

range of fire resistant boards can be deployed or

installed for a variety of uses such as backer boards, render boards, decorative panels, wall systems and sheathing boards. In addition to high levels of professional service, Duncryne’s focus is to provide the UK construction and engineering sectors with superior performing building boards at a competitive price.

WE OFFER • High quality building boards for fire, acoustic, structural and performance • A1 non combustible rated, external structural sheathing for timber frame • Vapour open, render carrier, brick slip and tile backer boards • SIPS, volumetric infill, soffit lining, composite and decorative panels • System led solutions for robust, high impact, internal walls, floors and ceilings • Through wall system components – framing, boards, fixings, joint tape • Professional technical support - design, procurement and construction • Cutting & Bonding Services

www.econicboard.com Tel: 0141 576 0077 Email: keithj@duncryne.com 168 Bath St, Glasgow, G2 4TP

D

boards


BUILDING INFORMATION MODELLING (BIM)

BIM: Improving Collaboration in the Construction Industry As BIM becomes the standard for the construction industry, what are the benefits and what do organisations need to know? Andrew Butterfield, Product Certification Director of Built Environment, BSI, reveals more.

BIM is the management of information throughout the lifecycle of a built asset, from initial design through to construction, facility maintenance and de-commissioning. Whether for it’s for a new building or a rail infrastructure, it focuses on collaboration and is underpinned by digital technologies. These technologies allow for more efficient methods of designing, delivering and maintaining physical built assets throughout their entire lifecycle. BIM enables design and construction teams – engineers, owners, architects, contractors to collaborate across each discipline at a level that has been unseen before. As BIM is being adopted increasingly throughout the construction industry, it’s crucial that CEOs are aware of this opportunity and what it may mean for their organisation.

Change the Way you Work The information shared between design and construction teams remains with a project, from start to finish. It also helps to analyse any potential impacts. The use of BIM goes beyond the planning and design phase of the project, extending throughout the building lifecycle, supporting processes including cost management, construction management, project management and facility operation. The adoption of BIM requires organisations and individuals to change the way they work. They must accept that traditional roles within the supply chain and client organisations may need to be redefined to successfully implement the new processes and information management requirements of BIM.

68 | www.structuraltimbermagazine.co.uk | STMAG

Some of the benefits include: • Reduction in CAPEX, delivery and operational costs • Reduced risk • Improved carbon performance • Predictable planning • Faster and efficient processes • Increased productivity and speeds up delivery • Reduced uncertainty • Controlled whole-life costs and environmental data • Avoidance of rework costs • Improved safety • Opportunity to secure Government contracts and meet BIM Level 2 • Reduced onsite waste • Prevention of errors.


BUILDING INFORMATION MODELLING (BIM)

01 What to Do Now From 2016, the government requires construction suppliers tendering for centrally-procured government projects to be working at BIM Level 2. This supports the UK Government’s Construction Strategy published in May 2011, which aimed to reduce the cost of public sector assets by up to 20%. As a minimum, organisations require fully collaborative 3D BIM (with all project and asset information, documentation and data being electronic). The requirement has been introduced to drive the adoption of BIM processes throughout the public and private sector. Whilst this requirement was introduced initially for government projects, the benefits of utilising BIM Level 2 processes and information management practices can also be realised by private sector clients and projects within the construction industry. How is BSI supporting this requirement? Standards and guidance are a crucial part of understanding BIM. The suite of standards to support industry in the adoption of BIM Level 2 outline the processes and information management practices required to perform at this maturity level. Some of these free standards are available to download. Our verification scheme for PAS 1192-2 ‘Information management for the capital/delivery phase of construction projects’ was launched in

December 2015. This has been developed in order to provide contractors and their supply chain with evidence that they have the capability to deliver projects using BIM. PAS 1192-2 was designed with input from influential industry experts. The consensus-based standard sets out how to share information on BIM projects and lists the requirements for BIM Level 2. It makes recommendations for the adoption of industry conventions, challenges project complacency and promotes consistency and transparency of work processes between parties. PAS 1192-2 is one of the series of standards designed to drive cost savings and efficiencies through waste reduction and improved collaboration. In order to achieve verification from BSI of their BIM capability, contractors have to demonstrate that they adhere to the requirements of the PAS 1192-2 standard through an independent assessment. The assessment involves an onsite audit which will assess the documented procedures and systems for all processes in PAS 1192-2, which also includes compliance with BS 1192 and BS 1192-4 and the competency of staff. BSI worked closely with VolkerFitzpatrick, one of the first organisations to achieve verification, to ensure they met the requirements of the standard.

Rob Dingwall, Head of Planning and Design, VolkerFitzpatrick saying: “VolkerFitzpatrick were pleased to collaborate closely with BSI to achieve our Level 2 certification for Design & Construction and to be at the very forefront of BIM in the UK. As a world class contractor, we wanted to partner with a world class standards organisation. We found the experience very thorough but practical and we’d recommend working with BSI for certification.” The BIM Level 2 website has also been developed as a point of reference for clients, designers, contractors, trade suppliers, manufacturers, maintainers, operators and users to understand how to use BIM and data to improve productivity and reduce waste. Work has been undertaken over the past four years in a joint Government – Industry Working Group or BIM Task Group, including BSI to provide Standards, guides, case studies and shared experiences to help all stakeholders with their BIM adoption journey. For more information about BSI’s verification scheme visit: www.bsigroup.com/en-GB/ Building-Information-Modelling-BIM | www.level2bim.org

IMAGE: 01. Banyan Wharf courtesy Hawkins & Brown

STMAG | www.structuraltimbermagazine.co.uk | 69


BUILDING INFORMATION MODELLING (BIM)

Get on Board or Get Left Behind Rob Charlton, Chief Executive of Space Group started exploring 3D modelling back in 2000. With streamlining product information a key target for the construction industry, is it any nearer getting to grips with BIM? industry. As skills mature new hardware and software is being developed. Now augmented and virtual reality is commonplace. Hardware such as Oculus Rift and HTC Vive are regularly used on projects. So what does all of this mean for the offsite manufacturing sector? This sector potentially should be able to leverage huge benefits to reduce time and improve quality. In all other manufacturing industries 3D design is standard. Aerospace and automotive moved away from drawing boards decades ago. BIM has been building momentum in the construction industry for a number of years. At Space Group we completed our first building using the software in 2005 and not long after had re-trained our entire design and technical team to use the software. However we were very much in the minority at the time. It wasnâ&#x20AC;&#x2122;t until May 2011 when the industry would move beyond a few early adopters to mainstream. At this point, the then Chief Government Construction Adviser Paul Morrell, announced that BIM would be mandated on all publically funded projects by April 2016. The industry then had to accept that BIM was not going to go away. We are now beyond this date and without doubt the industry has moved a long way and has worked hard to adopt the change. The world didnâ&#x20AC;&#x2122;t change in April but the culture has. Generation Y have a louder voice and are leading the way in adoption. Clearly not all

projects are being delivered in this way but projects in the public sector not using BIM are in the minority. Our BIM technologies business works with many private sector clients in the capital and it is clear they can see the benefits in using technology to reduce cost and risk. Increasingly developers are moving beyond design and are exploring how BIM can assist in the entire lifecycle and are developing asset and facilities management workflows. The move to digital design and construction has impacted in many areas access the industry. There is now a skills issue as new technologies have to be adopted. Generation Y can absorb the software easily however they lack experience. Those with experience are a little older and therefore find the adoption of new technologies more difficult. However the move away from an analogue works flow to a digital one is far more likely to attract quality new talent into the

70 | www.structuraltimbermagazine.co.uk | STMAG

Using digital tools to design offsite buildings and components will allow improved tolerances and less wastage. Onsite assembly can be rehearsed digitally and the buildings optimised. There are some skills in the industry but in many companies this is the beginning of the journey. BIM is not going to go away. Your competitors will be using it and benefitting from the value it can deliver. Get on board or get left behind.

For more information visit: http://bimtechnologies.co.uk


SKILLS & RECRUITMENT

Do You Really Need to Have a Strong Employer Brand? Skilled job applicants are in short supply so attracting the best people is now crucial to success. Jim Roach, Managing Director of specialist recruiter ARV Solutions, explains why a strong ‘Employer Brand’ is a business essential.

Understanding and getting your Employer Brand right is the biggest factor in winning the battle for scarce talent today. Candidates can pick and choose and as a norm, have a selection of interviews and offers to consider. Becoming the chosen employer means being a choice employer. Is skills shortage still relevant post BREXIT? Did you really think I wouldn’t mention BREXIT? We have a stronger economy than in many years with the highest ever employment in the UK, and lowest numbers out of work since 1974. In this post-BREXIT world there will be uncertainty, and some think growth will be restricted, but we are starting from a very positive place. I firmly believe we won’t see pressure on skills reducing, indeed

the potential is for increase with restricted supply. BREXIT is inevitably going to have an effect on immigration, whether less numbers is arguable though it is likely to be less straight forward at the very least. British businesses still need to be able to attract skills internationally without too much red tape, and we need skilled people to wish to move and be welcomed in our wonderful “green and damp” country. We are unlikely to see an increase in skills from abroad, so the supply can only reduce. Attracting the best people is still going to be a hot topic with restricted supply. Even in tougher times employers looking to succeed need the very best people, and attracting and retaining the best skills for business continuity will be key. So what is Employer Brand? A company’s employer brand is all about how the business is perceived externally

by prospective employees, and what staff see internally. People stay in jobs, or leave, based on five motivations: Money, Status, Responsibility, Lifestyle and Security – and despite huge pressure for wage growth it’s never just the money. The employer brand needs to respond to these factors, and we need to understand which ones are key to different individuals to attract them. How do you differentiate your organisation from competitors? Why would a candidate want to work for you rather than your competitor? What makes you distinctive? What will appeal to people and let them believe they will thrive within your culture? Are you welcoming, inclusive, diverse, investing in training and development, offering flexibility, social aspects, treats and great benefits? Have you won

STMAG | www.structuraltimbermagazine.co.uk | 71


SKILLS & RECRUITMENT

awards, been recognised as leaders in the field? It’s time you started telling people. Testimonials are a key differentiator to any business and the opportunity for these is growing with sites such as Glassdoor letting employees post anonymous reviews. Take a look and see what people are saying about your company. Set up a profile and post your positive news. When to Act Don’t wait to start thinking about this when you need to recruit. This has to be real and ongoing. A sticking plaster won’t work! As well as needing to attract new staff surely you want your current staff to love their workplace, and be ambassadors for the business? Putting great but often inexpensive things in place now will help staff retention and attraction (and could save you the occasional agency fee!) Web and Social Media You expect candidates to research your company, to be prepared and show an interest. They will also be checking you out. They are likely to go to your website, and LinkedIn plus Twitter, Facebook, Pinterest, and more – as well as Googling your

business. It is important that they see a positive image. What do your team web pages look like? Could you post employee testimonials and real case studies of staff who have progressed? Adding video is also now really valuable: those millennials love it! Do your blogs comment on social events, fun things your staff do, charity work, flexibility of working? A positive image will gain buy-in before they have even met you. A negative view could lead to no shows! Reputation and Perceptions What is your reputation in the market? Not just with clients, but with competitors, staff and ex-employees? Is it accurate? Reality and perception are hardly ever the same, however the perception is the only reality seen. Hopefully you can put straight misconceptions at interview, though better to get the message out prior. A recruitment agency with a good knowledge of their sector will know about the issues of perceptions versus reality and can address these upfront from good knowledge of your business and the marketplace. We have challenges recruiting too! The broad perception that recruitment is all about

72 | www.structuraltimbermagazine.co.uk | STMAG

cold calling, puts many off. Our particular business model is far more focused on drawing people to us, and gaining repeat and referral business – and this is the message we need to push. Interviewers In interviews we are trying to assess the candidate’s suitability for our roles. We need to delve and get in depth answers of course. At the same time it is critical to sell the brand of your business and gain buy in from your interviewee – even if you don’t offer them a job. Interviewers must be ready to discuss and actively sell the employer brand (Please don’t keep up the bad cop persona!). How to proceed? Talk to your people and ask what they think of the Employer Brand, and what they’d like to improve on. You may be surprised at how straightforward it is, or at least be better placed to understand the current position to work from. For more information visit: www.arvsolutions.co.uk


NAILS & SCREWS Including

QUIK DRIVE®

and other Collated Products C-F-16UK

+44(0)1827 255600 www.strongtie.co.uk

Well Fixed for Fastenings The all new Nails and Screws brochure is here. Building better, safer structures just got easier. Connect with us: 01827 255600 and strongtie.co.uk.

STM-SST-April2016.indd 1

01/04/2016 15:25:39

Adding Real Value in Recruitment Specialist recruitment in offsite manufacturing, construction and supply chain

Call us now on

0117 9592008 ARV Solutions are the UK’s leading recruitment consultancy for the offsite construction sector, and it’s supply chain. We are your trusted recruitment partner for permanent, contract and interim staffing needs in all forms of structural timber, timber supply, modular build and wider offsite manufacturing and construction sectors, throughout the UK and internationally.

CAREER OPPORTUNITIES IN:

 Cad | Draughting | Design | Process  Manufacturing | Production | Operations  Site | Project | Contracts Management  Estimators | Quantity Surveyors | Buying  Sales & Marketing | Business Development  Graduate to Executive / Director level Please contact our team for a confidential discussion on career opportunities for you. WWW.ARVSOLUTIONS.CO.UK


PRODUCTS, SERVICES & ANNOUNCEMENTS

Explore Offsite Futures With an industry boasting a worth of up to £3 billion per year and accounting for over 5% of today’s new build construction market it is not hard to see why now is the time to become involved with offsite construction. Explore Offsite will see approximately 200 delegates and an exhibition of up to 30 companies, all from a range sectors that incorporate offsite construction in their construction practice, using timber frame, light steel frame, precast concrete, bathroom pods, volumetric buildings, prefabricated building services plus CLT, glulam and a variety of hybrid technologies. Explore Offsite Futures is taking place on 24 November 2016 at the NEC, Birmingham and will include speakers from pioneering companies in the offsite construction industry. Speakers include: • Sam Stacey - Skanska • Jason Whittall - One Creative Environments • Jaimie Johnston - Bryden Wood • Ken Davie - Carillion Building • Stephen Bradbury - Wates Group • Chris Foad - Whitbread • Tim Houghton - Heathrow Airport

VISIT: www.exploreoffsite.co.uk

Timber cladding adds finishing touch to contemporary urban village Silverwood Inspire timber cladding from A. Proctor Group has been chosen to add the perfect fi nishing touch to a stylish new development of apartments and villas at Maidencraig Village, Aberdeen. Developer Bancon Homes has created the exciting new development, with Phase 1 consisting of a range of apartments and villas from one to three bedrooms. Maidencraig offers a variety of apartments, houses and shops, which gives the development the selfcontained feel of a small urban village within easy reach of the city centre. Contractors Bancon Construction chose Silverwood Inspire timber cladding in the Sand natural colourway for an impressive contemporary look. Silverwood timber cladding is regularly specified by architects and contractors on the basis of its’ proven performance, backed by a comprehensive 10 year paint finish guarantee, and its durability of up to 50 years as a result of the combined timber treatment and factory applied paint finish. Silverwood Inspire combines the look and feel of traditional cladding with a planed and brushed fi nish and is available in a modern palette of colours.

Offsite Awards Offsite Awards go from strength to strength. The Offsite Awards reward outstanding examples of prefabrication and factory-based methods, products, systems and disciplines that increasingly strive to develop a sustainable, streamlined and cost-effective way to deliver a better built environment. Across key sectors of UK construction, the Awards will showcase innovation, celebrate best practice and recognise overall expertise in offsite construction through landmark projects, influential people and material and manufacturing excellence in this dynamic arena. There are 12 categories available to enter at no cost, including: Best Use of Timber, Housing Project of the Year and Commercial Project of the Year. Submission Deadline: 12 August 2016. Full details of the 2015 Offsite Awards winners are available online.

In Phase 1 of the development a total of 92 homes were completed in Silverwood Inspire timber cladding, with the next stage already planned. Another 36 homes are set to be built and receive the same beautiful finishing touch. CONTACT: contact@proctorgroup.com VISIT: www.proctorgroup.com

TEL: 01743 290001 VISIT: www.offsiteawards.co.uk

Gaujas Koks Ltd has 25 years of experience in manufacturing top quality timber products with two major sawmills delivering a total output of 300,000m3 of finished products and is now aiming to become the leading manufacturer of the most cost effective CLT panels on the market.

As CLT (Cross Laminated Timber) is becoming more popular as a structural building material, a new producer has evolved with its new CLT production line facility and a completely new approach to the manufacturing process making CLT panels an inexpensive alternative to concrete and steel structures.

With the first CLT manufacturing line already in full operation and the second full cycle production plant under construction, Gaujas Koks has a very ambitious plan to offer CLT panels at competitive prices to significantly increase market shares of this innovative building material. A core success is in the highest efficiency of manufacturing process and marketing strategy. The intention of the company is to concentrate it’s efforts on blank panel manufacturing and leave further processing to a third party that will be providing such a service from landed stock panels in order to offer end users fully customised structures in the shortest term possible and at the most competitive price. If you are interested in establishing a cooperation and take over post processing of CLT panels, please contact Mr. Alexey Prytkov, Production and Marketing Director of Gaujas Koks Ltd at:

Phone: +371 6780 3530 l

www.gk.lv

74 | www.structuraltimbermagazine.co.uk | STMAG

E-mail: alexey@gk.lv


THE UK’S ONLY TIMBER EVENT EXCLUSIVE SHOW PRODUCT LAUNCHES CPD’S NETWORKING EVENTS

Register for your free ticket

timber-expo.co.uk

9

SHOWS

DEDICATED OFFSITE ZONE

Includes:

FREE access to 9 shows during UKCW

PART OF


Think of it as years of expertise, focused on helping your business grow. In todayâ&#x20AC;&#x2122;s changing world, how can you protect your future growth? Credit Insurance provides the knowledge you need to trade with the right customers whilst ensuring that your invoices will be paid. So why not take just half an hour to meet with one of our Credit Insurance Consultants and see how it could help your business? Call us on 0800 056 5452 or visit www.what-is-credit-insurance.co.uk for a FREE appraisal on your credit line exposure.

www.eulerhermes.co.uk

Euler Hermes UK is a branch of Euler Hermes SA(NV), Avenue des Arts 56, 1000 Brussels, Belgium. Company no. 0403.248.596 RPM Brussels. Insurance firm, registered under code 418. Branch registered in England and Wales with no. BR015404, registered branch address 1 Canada Square, London E14 5DX. Authorised by the National Bank of Belgium and the Belgian Financial Services and Markets Authority, and subject to limited regulation by the Financial Conduct Authority. Details about the extent of our regulation by the Financial Conduct Authority are available from us on request. * Calls may be recorded. Calls are free from a BT landline but charges may vary from mobiles and other network providers. Lines are open Monday - Friday 8am - 6pm.

Structural Timber Magazine Summer Issue  

Issue 8 - Summer 2016

Read more
Read more
Similar to
Popular now
Just for you