Structural Timber Magazine Issue 01

STRUCTURAL TIMBER Sponsored by:

MAGAZINE | ISSUE 01 | AUTUMN 2014

Building Solutions in Timber

P6

A YEAR OF PROGRESS Lawrence Young reflects on membership growth and a successful year for the STA since its rebranding

P20

TIMBER EXPO 2014 See what the STA has to offer at the leading national timber event

Everything you need to know at: www.structuraltimber.co.uk

P46

BIM & OFFSITE HOUSING Timber has a huge role to play in delivering precision-manufactured, low carbon homes for the UK

ADVERTORIAL

Why new building efficiency standards don’t have to be ‘L’ on earth Sustainability is back on the agenda.

The upturn in the construction industry has led to a renewed focus on projects’ environmental impact. That could have big implications for housebuilders.

Recently, the UK Government introduced amendments to Part L of the Building Regulations. The changes mean that all new build homes will need to be six per cent more energy efficient than under current regulations. Likewise, non-domestic buildings will need to improve performance by nine per cent. What’s more important, however, is the change of focus in how builders are expected to go about achieving these requirements. An emphasis is now placed on the fabric of new buildings, with the introduction of a fabric energy efficiency standard (FEES).

In fact, in her statement announcing the changes, Baroness Hanham made specific mention of “getting the building fabric right”.

In theory, these could add to project costs.

But if managed correctly, they don’t have to.

Here are Stewart Milne Timber Systems’ top three ways you can meet the new regulations, without impacting on your bottom line:

1. BUILD APPROACH With emphasis being placed on how builders go about achieving the new standards, a ‘fabric first’ approach provides a head start on energy efficiency. By considering the building materials first, you can ensure the building will meet the required standards primarily by virtue of its envelope, rather than by relying on mechanical bolt-on technology. Retrofit measures can be a costly and risky addition to a project and can rely on end users changing their lifestyles and habits, which also means they have mixed results.

2. FABRIC PERFORMANCE

Alex Goodfellow Group Managing Director - Timber Systems

Selecting the right material and construction method is the next logical step. Ensuring you have a build fabric that complements the sustainability needs of the project is vital. To reach the new requirements, you will need a material that is inherently energy efficient and low carbon. Timber frame is one such fabric and is, in fact, the most energy efficient commercially available building material.

It’s the ideal choice for achieving energy efficiency through the build fabric.

Research suggests that timber frame homes spend 40% less on their heating bills than masonry homes thanks in part to better energy efficiency.

3. MODERN METHODS OF CONSTRUCTION The build method is another important factor. Stewart Milne Timber Systems adopt an offsite construction method which comes with a number of benefits.

Manufacturing their timber systems in factory facilities allows them to precision engineer the timber frame, resulting in increased air tightness, simplified detailing and improved thermal performance. That makes it easier to achieve the energy standards because there will be fewer flaws in the envelope, meaning less air leakage and improved tolerances at joints. These are only the most important considerations. Although there weren’t any specific changes to standards that relate to the structural design of buildings and their acoustics, timber also provides benefits in that respect. But more on that another time. When you are planning your next project, it’s worth bearing in mind what these changes will mean for your new development.

STRUCTURAL TIMBER MAGAZINE | ISSUE 01 | AUTUMN 2014

CONTENTS 4 Collaborate to Accumulate

P16 Introduction to Timber Frame

P30 Timber an Evolving Sector

Welcome to the very first edition of the STA

One of the best modern ways to create a

Interview with Lawrence Young about the

Magazine from STA Chief Executive,

low carbon, energy efficient building, timber

STA and member benefits.

Andrew Carpenter.

frame construction is now being seen more and more social housing schemes and

P32 Specialist Case Studies

self-build projects.

Available in full on the STA website, the first of a continuing series of in-depth case studies from different construction sectors.

This issue includes Furness Academy, Plymouth University, Hanham Hall and a self-build project using timber frame.

P40 Engineering Bulletins Due to be rolled out soon, the STA Engineering Bulletins will include detailed engineering information on timber technology and will become an essential source of technical

IMAGE COURTESY OF: TIMBER EXPO

information for anyone working with timber.

IMAGE COURTESY OF: TIMBER EXPO

P6 One Year On

P20 Timber Expo 2014

P46 BIM4Housing

Chairman of the STA, Lawrence Young,

Alongside almost 200 companies from all

BIM4Housing is a cross-industry group open

reflects on a year of progress for the STA

four corners of the timber industry, the STA

to all organisations involved in the design,

since its rebranding and its performance in

and several of its members will be hosting

construction, management and delivery of

an economy in transition.

many Timber Focus seminar sessions in the

housing. Andrew Carpenter, Chair of

special STA Seminar Theatre.

BIM4Housing outlines what it hopes

P8 Introduction to Solid Wood

to achieve.

The growth of engineered timber systems

P24 Measuring the Performance Gap

and solid wood such as cross laminated

The performance gap has been on

P52 Industry News

timber (CLT) and glulam has seen architects

everyone’s agenda thanks to a report

A quick round-up of some recent news

and building specifiers add a new dimension

published in July by the Zero Carbon Hub.

stories from the timber and construction

to modern building design.

Martin Milner, the STA’s technical consultant

sectors that you may have missed.

explains what the report means for the P12 Introduction to SIPS

P56 Member Directory

structural timber sector.

Structural Insulated Panels (SIPS) are

A full listing of STA members and their

increasingly part of the mix when it comes

P28 Housing Supply & Offsite Opportunities

to energy efficient building design and

The shortage of housing stock across the

delivery. They define the best in offsite

UK and how to solve it is a perennial problem.

manufacture and Fabric First principles.

The potential for timber building systems and offsite manufacture to bring a high

specialist disciplines.

FOLLOW US ON TWITTER UNDER: twitter.com/STAtimber

quality and speedy solution is enormous.

ENQUIRIES PLEASE CONTACT: Bob Davis T: 01259 272140 | E: bob.davis@structuraltimber.co.uk DISCLAIMER Structural Timber Magazine is produced and published by Radar Communications on behalf of the Structural Timber Association: ©Radar Communications Ltd. COVER: WOODLAND TRUST X-LAM Alliance

CONTENTS

3

STRUCTURAL TIMBER MAGAZINE | ISSUE 01 | AUTUMN 2014

LET’S COLLABORATE TO ACCUMULATE Welcome to the very first edition of the Structural Timber Magazine. This issue is jam-packed with news, case studies, interviews and product information from across the structural timber sector. We hope you find it an informative and interesting read.

This year has been the brightest that the timber

At the heart of this change will be the adoption

industry has seen in a long time. Latest figures

of BIM, which is an ideal vehicle to deliver

show that timber’s share of the newbuild market

efficiencies throughout the supply chain –

has risen to 23.6% – up from 22.8% in the

playing into the hands of offsite construction.

THIS YEAR HAS BEEN THE BRIGHTEST THAT THE TIMBER INDUSTRY HAS SEEN IN A LONG TIME.

LET’S ALL WORK TOGETHER – WITH EACH OTHER AND WITH THE ENTIRE SUPPLY CHAIN – TO GUARANTEE THAT THE STRONG MESSAGE OF TIMBER IS HEARD, AND THAT THE TIME FOR TIMBER IS NOT JUST NOW, BUT FOR GENERATIONS TO COME.

previous year – and it certainly feels like the upturn for timber is just beginning. The market

To ensure the long term success of our industry,

has picked up: there is a desperate need for

we need to make sure that timber becomes the

additional housing stock and the Government

material of choice not just now when confidence

has a renewed passion for offsite construction.

is high, but in the future – whatever it may bring.

Now is the perfect time to showcase all that timber has to offer.

We believe that collaboration is key to gaining a competitive advantage over other materials.

There is no doubt that the industry is

Partnering with our supply chain allows us to

experiencing a surge of interest thanks to

integrate our collective knowledge, expertise,

improved market conditions, but we must ensure

resources and processes, meaning that we can

that we take full advantage of this to properly

offer much better returns to customers. It also

grow our share of that market. We cannot simply

means that at every step of the process, we’re

ride on the back of the upturn and hope for the

sharing one joined-up message; promoting

best – we need to do things differently.

structural timber as a sustainable building

IMAGE COURTESY OF: TIMBER EXPO

solution which provides speed, efficiency and In the difficult times, the timber sector

high standards.

revolutionised many of its products, offering new systems to meet the needs of a changing

Let’s all work together – with each other and

industry. Now that things have picked up, it is

with the entire supply chain – to guarantee that

essential that we keep up with this innovation

the strong message of timber is heard, and

of both product and process, to maintain the

that the time for timber is not just now, but for

momentum and be confident that the growth is

generations to come.

IMAGE COURTESY OF: FRAME WISE

sustainable. To do this, we need a truly collaborative culture and a totally integrated

Andrew Carpenter Structural Timber

design, manufacture and erector supply chain,

Association, Chief Executive.

providing customers with speed, efficiency and

Email: andrew.carpenter@structuraltimber.co.uk

quality, every time.

www.structuraltimber.co.uk

4

LET’S COLLABORATE TO ACCUMULATE

STRUCTURAL TIMBER MAGAZINE | ISSUE 01 | AUTUMN 2014

STA: ONE YEAR ON Chairman of the STA, Lawrence Young, reflects on a year of progress for the STA since its rebranding and how the Association is performing in an economy in transition…

IMAGE COURTESY OF: TIMBER EXPO

It’s been a monumental year for the STA. Not

fact that many of our members now work with

The inclusion of our new membership meant

only have we experienced the biggest rebrand

and produce hybrid structural timber solutions,

that our AGM – held in Chepstow at the end

in the Association’s history, but we have also

including glulam, cross laminated timber (CLT)

of May – was our busiest ever. We were joined

gained a host of new members and witnessed

and structural insulated panels (SIPS) alongside

at the AGM by a number of guest speakers,

a significant upturn in the industry. With positive

timber frame.

including Peter Hansford, who gave a keynote

economic news continuing to emanate from

speech regarding the Government’s Construction

the construction sector – and the UK economy

As a result of the rebrand, we have had many

2025 strategy. Peter described the strategy

as a whole – the future for the timber sector is

new members join the Association over the past

as the opportunity to transform the construction

looking brighter than ever before.

year, including the full membership of the former

industry, with collaboration highlighted as a key

UKSIP Association (UKSIPs), which joined us at

factor.

We have been working tirelessly in the past year

the start of April 2014. This move saw Peter Barr

to ensure that our members are best positioned

of SIPCO, and former vice-Chairman of UKSIPS,

In April we were delighted to announce that

to make long-term gains from the upturn by

join the STA’s board to boost the representation

Whitbread, one of the UK’s largest hotel and

creating a sustainable recovery for our sector.

of SIPS within the management of the Associ-

restaurant operators, will now only use the

Our rebrand from the UKTFA at Timber Expo

ation. By joining forces in this way, we feel that

products and services of STA members in its

in September 2013 was carried out with the

we are growing our influence and demonstrating

future timber-based projects. The company,

intention of creating a stronger voice for the

the diversity which our various technologies have

which operates brands including Premier Inn,

timber frame and structural timber industry

within the construction industry as a whole.

Costa Coffee and Brewers Fayre, build and

within the UK. We did this as recognition of the

6

manage hundreds of properties across the UK,

STA - ONE YEAR ON

STRUCTURAL TIMBER MAGAZINE | ISSUE 01 | AUTUMN 2014

CALENDAR Kingspan Timber Solutions Factory Tour 18 September 2014 Great Gransden, Bedfordshire

Timber Expo 07 & 08 October 2014 NEC Birmingham

Pinewood Structures Factory Tour 15 October 2014 Sandy, Bedfordshire

National Homebuilding & Renovating Show 25 October 2014 RHC, Edinburgh

Stewart Milne Timber Systems Factory Tour 25 September 2014 Witney, Oxfordshire

STA Fire Safety Workshop – Midlands 08 October 2014 NEC Birmingham

STA Fire Safety Workshop - North West 16 October 2014 Daresbury Park Hotel, Warrington

National Homebuilding & Renovating show 7 November 2014 HIC, Harrogate

STA Fire Safety Workshop – Scotland 01 October 2014 Garfield Hotel, Glasgow

STA Fire Safety Workshop – South 09 October 2014 St. Mary’s Stadium , Southampton

STA Fire Safety Workshop - East England 22 October 2014 Royal Cambridge Hotel, Cambridge

STA Fire Safety Workshop – Scotland 13 November 2014 Thainstone House Hotel, Aberdeen

Scotframe Factory Tour 01 October 2014 Inverurie, Aberdeenshire

Frame Wise Factory Tour 14 October 2014 Presteigne, Powys

Oregon Timber Frame Factory Tour 23 October 2014 Selkirk, Scottish Borders

Strategy Conference 19 November 2014 National Motorcycle Museum, Birmingham

IMAGE COURTESY OF: FRAME WISE

LAWRENCE YOUNG, SUZANNAH NICHOL MBE AND ANDREW CARPENTER AT THE AGM

with many more in the pipeline. This was a

are in the best position possible to capitalise on

England and Wales, with particular emphasis on

real coup for us as an Association, and we’re

the upturn in the construction industry. They are

the recent £1.7bn funding programme released

confident that other big companies will follow

specifically designed for erectors and installers

by HCA to build 160,000 new homes over the

suit – with some similar agreements already in

of timber systems but would also be of benefit to

next three years. Between now and Christmas,

the pipeline. By committing to only using STA

other companies involved in these processes.

we will be spending a lot of time on activities

members, Whitbread is ensuring that any timber

that will benefit members’ businesses as we

construction work is carried out by companies

As the forecast for the industry continues to look

which meet our approved standards. This raises

positive, we predict that structural timber will

seek to grow the market.

not only the profile of STA members, but also

continue to go from strength to strength as we

As I’m sure you will agree, the STA is currently

that of timber as a whole, as the company is

look forward to 2015 and we are working hard

on the up and there has never been a better

guaranteed to receive a high level of quality,

to encourage this.

time to become a member.

which can only put structural timber in a positive light.

A big focus for us in the short term is promoting the use of structural timber throughout England

Following our success with the erector community

and Wales. In recent months we have received

training in 2013, we launched a new series of

the funding from Scottish Enterprise for a PR,

Going for Growth workshops. The workshops are

marketing and client development programme.

designed to help businesses consolidate and

This is giving us significant funds with which to

grow their current operations, to ensure they

promote the use of structural timber throughout

STA - ONE YEAR ON

FULL DETAILS OF STA ACTIVITY CAN BE FOUND ON THE ASSOCIATION WEBSITE: www.structuraltimber.co.uk

7

STRUCTURAL TIMBER MAGAZINE | ISSUE 01 | AUTUMN 2014

SOLID WOOD CONSTRUCTION – AN INTRODUCTION

IMAGE COURTESY OF: X-LAM ALLIANCE

The growth of engineered timber systems and solid wood building systems such as cross laminated timber (CLT) and glulam has seen architects and building specifiers add a refreshing new dimension to modern building design.

8

IMAGE COURTESY OF: B&K STRUCTURES

SOLID WOOD CONSTRUCTION - AN INTRODUCTION

STRUCTURAL TIMBER MAGAZINE | ISSUE 01 | AUTUMN 2014

IMAGE COURTESY OF: B&K STRUCTURES

IMAGE COURTESY OF: KLH

IMAGE COURTESY OF: FRAME WISE

IMAGE COURTESY OF: X-LAM ALLIANCE

There has been an inexorable rise in the use of

Precision Manufacture

Glulam beams have enormous aesthetic appeal

solid wood in the UK over the last five years and

CLT is a solid panel product fabricated within a

to architects and building designers and are

CLT and glulam are fast becoming a first choice

precision factory-controlled environment, using

available in a wide range of standard sizes but

option for a structurally strong, attractive, low

accurate data from BIM modelling and controlled

can be made to measure to extreme lengths.

carbon building.

CNC processes. It is produced by laminating and

Sizes and lengths can easily reach 32m and can

finger jointing soft wood timber lamellas at 90°

be shaped and curved with a variety of finishes

Commonly made from Spruce, Larch and

to the layer below and encompasses multiple

and profiling.

Douglas Fir, solid wood solutions are being

layers. These are then glued together using a

adopted as a natural and renewable alternative

formaldehyde free adhesive. The layers of timber

Glulam arches and beams deliver exceptional

to steel and concrete across a range of building

are bonded perpendicularly to one another giving

interior clear spans and vaulted ceilings without

types including schools, healthcare environments,

immense strength. Openings for windows, doors

any need for ridge beams, supporting columns

supermarkets and swimming pools.

or routing for services can be factory-cut for

and fewer connections. This allows more design

quick and easy installation onsite.

flexibility than with other forms of timber

Thanks to the flexibility and speed of

construction and many alternate building

construction when using solid wood – along

Glulam – glued laminated timber – is a similar

with its suitability for multi-storey developments

high specification engineered timber beam,

– it is now being adopted in the high-end

fabricated by bonding together stress-graded

residential sector.

planed timber laminations, with their grain in the

materials.

direction of the member. This forms a structural unit of excellent strength and dimensional stability.

SOLID WOOD CONSTRUCTION - AN INTRODUCTION

9

STRUCTURAL TIMBER MAGAZINE | ISSUE 01 | AUTUMN 2014

IMAGE COURTESY OF: B&K STRUCTURES

Lightweight – High Strength

The properties of CLT and glulam are such that

CLT requires reduced foundation work as the

they make significant contributions to both the

structural loads required are small compared

thermal insulation and acoustic performance of

to concrete and steel – an estimated 25%

buildings with Passivhaus standards of

reduction in foundations compared to equivalent

airtightness easily achieved.

precast concrete groundwork.

Time and cost savings can also be maximised CLT is also a very stable timber system. It has

as the CLT and glulam components are easy to

very little shrinkage or movement post construction

erect and connect onsite without complicated

and has a proven multi-storey capability up

fixings or drilling. This delivers improved

to 11 storeys in the UK. A structural capacity

resource efficiency, return on investment and

To hear more about Solid Wood

beyond this as can be seen in developments

overall better health and safety.

Construction visit:

in Australia and Canada where 30 storeys are being planned.

IMAGE COURTESY OF: RADAR COMMUNICATIONS

www.timber-expo.co.uk One major advantage of solid wood is its inherent fire resistance. Glulam and CLT chars in a constant

Or register for the Annual

and controlled manner and offers substantial fire

Solid Wood Solutions event at:

resistance. Unlike steel and concrete it remains

www.solidwoodsolutions.co.uk

structurally stable when subjected to high FOR MORE INFORMATION ON THE USE OF SOLID WOOD CONSTRUCTION AND IN-DEPTH TECHNICAL INFORMATION VISIT: www.structuraltimber.co.uk

10

temperatures. CLT panels can be produced with fire resistances of 30, 60 and 90 minutes.

SOLID WOOD CONSTRUCTION - AN INTRODUCTION

Delivering Your Vision At the forefront of European cross laminated timber (CLT) research and development, with over 50 highly experienced and dedicated experts, the Alliance delivers robust, reliable and sustainable solutions.

The award winning team provide an all-encompassing in house design, engineering, manufacturing and installation service for CLT structures across all commercial sectors.

Delivering Exceptional Results – On Time Within Budget • Delivers cost and programme certainty • Enhances construction programme • Reduces capital and lifecycle costs • Offers structural integrity, exceptional accuracy and minimal defects • Lightweight and robust structures, achieving good clear span distances • Airtightness – energy efficient • Contributes to acoustic and thermal performance • Minimises disruption and improves onsite Health & Safety • Delivers Full Chain of Custody - PEFC or FSC Certified • The ultimate sustainable solution

Call: 01773 857512

I

Email: info@xlam-alliance.com

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Join us on LinkedIn

I

www.xlam-alliance.com

STRUCTURAL TIMBER MAGAZINE | ISSUE 01 | AUTUMN 2014

SIPS – AN INTRODUCTION Structural Insulated Panels (SIPS) are increasingly part of the mix when it comes to energy efficient building design and delivery.

Boosting thermal efficiency levels and defining the best in offsite manufacture and Fabric First principles.

The construction industry has witnessed a

Materials Used in SIPS

SIPS offer a modern, cost-effective, energy

significant rise in the use of SIPS for use in the

SIP panels are composite (or sandwich) panels

efficient solution to a wide range of building

erection of both residential and commercial

consisting of two parallel faces – usually Oriented

types and are used primarily in walls and roofs

buildings in recent years with SIPs also making

Strand Board (OSB), sandwiching a rigid core of

providing low carbon residential, industrial and

huge inroads into the Self Build market.

Polyurethane (PU) foam or Expanded Polystyrene

commercial schemes. SIP panels offer superior

(EPS), making them lightweight, quick to erect

insulation, reduced thermal bridging, structural

With a low carbon base material in timber honed

and free from problems of compression,

strength and incredible airtightness over

by production in a precision factory-controlled

shrinkage and cold bridging associated with

traditional construction methods and systems.

environment, SIP panels are one of the fastest

other forms of construction.

growing systems of building within the construction sector.

Offsite fabrication leads to a number of efficiency Most, if not all, OSB used in the manufacture of

and environmental benefits including reduced

SIPs will come from manufacturing plants in the

onsite labour, shorter construction timescales,

They are increasingly appealing to architects,

UK or Europe and will be made from sustainably

better health and safety records and less material-

designers and building technicians for the many

sourced softwood timber.

intensive activity in general. The reduced onsite

ways they can contribute to a streamlined high

work – often saving weeks on overall project

performance structure and a lean construction

times – delivers a quicker finished scheme

approach.

resulting in reduced overheads and impressive returns on investment for the client.

12

SIPS – AN INTRODUCTION

STRUCTURAL TIMBER MAGAZINE | ISSUE 01 | AUTUMN 2014

ENERGY EFFICIENT TO THE CORE HIGH LEVELS OF THERMAL AND ACOUSTIC PERFORMANCE ARE THE MAINSTAYS OF SIPS SUCCESS. THE COMPOSITE NATURE OF THE SIP SYSTEM PROVIDES AN EFFICIENT AND EFFECTIVE SOLUTION TO REDUCING THERMAL LOSSES, IMPROVING ENERGY CONSERVATION THROUGH A FABRIC FIRST APPROACH.

IMAGE COURTESY OF: INNOVARE SYSTEMS

IMAGE COURTESY OF: KINGSPAN TIMBER SOLUTIONS

Since the thermal resistance of a building

SIP systems are capable of achieving excellent

element is only one part of its performance

airtightness figures without the need for

requirement, increasing the thickness of the

additional measures that would be required for

insulation levels without combining them into an

most other building methods. The use of two

integrated approach to the overall performance

layers of OSB and a central insulation core within

would provide uneconomically thick elements.

a SIP provides a multi-layered air barrier

SIPS offer the efficiency of structural and thermal

combining low permeability materials and

performance within one product. U-values as

reduced thermal bridging.

low as 0.11 W/m2K can be achieved through the use of SIPS whilst also limiting the increase in

Large format panels and manufacturing

building dimensions (wall thickness).

tolerances limit the air leakage at connections

DUE TO THE LIGHTWEIGHT STRUCTURAL PANELS, A LOWER FOUNDATION SPECIFICATION CAN BE USED AND A WATERTIGHT SHELL CAN BE ACHIEVED WITHIN DAYS, ALLOWING EXTERNAL CLADDING AND FOLLOW-ON TRADES TO PROGRESS QUICKLY.

and junctions. This can assist in providing an airtight construction as low as 1m3/hour/m2 at 50 Pa.

SIPS – AN INTRODUCTION

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STRUCTURAL TIMBER MAGAZINE | ISSUE 01 | AUTUMN 2014

THE USE OF SIPS MAY ALLOW SITES WITH POOR GROUND CONDITIONS TO BE USED THAT WERE NOT DEEMED SUITABLE FOR TYPICAL MASONRY CONSTRUCTION.

IMAGE COURTESY OF: BASF POLYURETHANE

TECHNICAL BULLETINS A full range of SIPS Technical Bulletins are available to download from the STA website. These include: Structure

Whole Life Costs

With the Government’s commitment to the

Many SIP buildings use the Fabric First approach

lowering of CO2 Emissions in construction,

to reducing carbon dioxide emissions. Rather

together with numerous Government

than offsetting energy usage (and carbon

announcements that all new homes will be zero

emissions) with bolt on technology, the heating

carbon by 2020, thermal insulation and lower air

(and cooling) demands of the building are

leakage requirements within dwellings will

reduced to the lowest levels practically possible

increase dramatically.

through insulation and airtightness.

By adopting the use of SIPS, its offsite

Fire

Similarly the use of SIPs may allow sites

production methods and pursuing a Fabric First

Acoustics

with poor ground conditions to be used that

approach, these new requirements can easily

Thermal

were not deemed suitable for typical

be achieved, especially when the SIP provider is

masonry construction.

integrated early enough in the design and

Durability

consultation process to allow efficient and

Sustainability

effective design and delivery.

FOR MORE INFORMATION ON THE USE OF SIPS AND IN-DEPTH TECHNICAL INFORMATION VISIT: www.structuraltimber.co.uk

14

SIPS – AN INTRODUCTION

A Modern Method Of Construction

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Suitable for residential or commercial projects where pull-out values are required for more demanding external finishes. i.e. Terracota Tiles, Heavy Duty Rainscreen.

Suitable for structurally demanding projects as loadbearing or nonloadbearing walls and roofs that are easily integrated with a wide range of construction materials.

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STRUCTURAL TIMBER MAGAZINE | ISSUE 01 | AUTUMN 2014

TIMBER FRAME – AN INTRODUCTION It may be one of the oldest forms of construction but it is one of the best modern ways to create a low carbon, energy efficient building. Timber frame construction is now being seen more and more across the built environment from social housing to self-build.

TIMBER FRAME CURRENTLY ACCOUNTS FOR AROUND A QUARTER OF NEW HOMES IN THE UK, WITH OVER 75% OF SELF-BUILDERS USING THE PRODUCT AS THEIR PRIMARY BUILD METHOD.

Modern timber frame structures are based on precision-engineered components created in a factory-controlled environment. Timber frame is a common building method in many parts of the developed world including Canada, USA and Japan but only has around 17% market penetration in England, Wales & N. Ireland compared to around 70% in Scotland. In Canada this is over 90%.

Timber frame currently accounts for around a quarter of new homes in the UK, with over 75% of self-builders using the product as their primary build method. This type of build method is adopted by every sector of the construction industry and is increasingly popular for hotels and student accommodation. It is strong, durable and sustainable. The build method relies on timber frame as a basic means of structural support carrying the loads imposed by the floors and roofs, before transmitting them to the foundations.

Timber frame also copes with complex designs and both private and commercial developers can rely on a CAD/BIM-ready, flexible building system. The construction of timber frame based structures comprises mostly factorymanufactured wall, floor and roof panels, often referred to as cassettes. The systems used are classified as either open panel or closed panel.

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TIMBER FRAME – AN INTRODUCTION

STRUCTURAL TIMBER MAGAZINE | ISSUE 01 | AUTUMN 2014

IMAGE COURTESY OF: PINEWOOD STRUCTURES

Open and Closed Panel

Timber frame is one of the fastest methods of

both external and internal walls, and floors to

Open panels are timber frame wall panels,

construction with the kit of components delivered

the construction site on a ‘just in time’ basis.

comprising studs, rails, sheathing on one face

to site ready for erection by a small specialist

This means materials are not stored onsite

and a breather membrane. Alternatively, closed

team. A weathertight shell can be erected in

where they can be damaged or suffer from

panels are made from studs, rails and insulation,

days rather than weeks as with alternative brick

site accidents.

with sheathings and/or linings on the faces of

and block methods. An average four-bedroom

the panel. A vapour barrier is also provided on

house can be erected and made watertight

the warm side of the insulation and a breather

within seven days. This means that follow-on

membrane on the outer face of the panel. If

trades and sub-contractors such as electricians

desired, closed panels may also include fitted

and plasterers can begin work much sooner. This

windows and internal service zone battens, for

economical use of materials means less waste,

ease of installation and construction.

onsite activity and better health and safety. The factory-controlled production environment also result in a reduction in direct construction costs

OPEN PANELS ARE TIMBER FRAME WALL PANELS, COMPRISING STUDS, RAILS, SHEATHING ON ONE FACE AND A BREATHER MEMBRANE.

and a significant reduction in total project costs.

Timber frame packages come from suppliers with the roof trusses, gable spandrel panels and gable ladders. Timber frame suppliers usually supply and fit the windows, doors, staircases, insulation and cavity barriers. Offsite fabrication enables delivery of structural timber panels for

TIMBER FRAME – AN INTRODUCTION

FOR MORE INFORMATION VISIT THE STA WEBSITE TO DOWNLOAD ADVICE NOTES OR TO PURCHASE A COPY OF THE TIMBER FRAME POCKET GUIDE: www.structuraltimber.co.uk

17

STRUCTURAL TIMBER MAGAZINE | ISSUE 01 | AUTUMN 2014

TYPICALLY, A 40% REDUCTION IN HEATING COSTS CAN BE ACHIEVED DUE TO THE IMPROVED THERMAL PERFORMANCE OF TIMBER CONSTRUCTION.

Risk Reduction

Timber is an organic material and naturally

Many systems for completing the external

warm. Typically, a 40% reduction in heating

envelope can be used such as timber cladding,

costs can be achieved due to the improved

render or brickwork. If a brickwork outer skin

thermal performance of a timber construction.

is used this is added after the timber frame is

Many of the benefits of timber frame appeal to

weathertight. This can be done at the same time as

the self-build sector in particular – ease and

the internal areas are being fitted out, increasing

speed of erection, an energy efficient and low

project efficiency even further. Internally the

carbon build and with a price certainty due to

walls are usually clad in dry plasterboard. As

the offsite manufacture – it is widely seen from

the timber frame is precision-manufactured in

Grand Design style developments to more the

a factory, it can be erected quickly, accurately

more modest volume build homes.

and easily by a relatively small team of specialist fitters. Ultimately, the use of timber frame reduces project completion times, eases planning pressures and creates a culture where the critical path is predictable. This reduces risk and delivers a quicker return on investment.

FACTORY TOURS: Why not take advantage of the RIBA Accredited Factory Tours this Autumn. More details can be found on page 37

18

TIMBER FRAME – AN INTRODUCTION

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Wise Wall systems can be used together to provide the optimum hybrid solution

STRUCTURAL TIMBER MAGAZINE | ISSUE 01 | AUTUMN 2014

TIMBER EXPO 2014 – EVERYTHING TIMBER Now in its fourth year, Timber Expo is set to welcome over 5,000 visitors to the Birmingham NEC, 07 – 08 October.

TIMBER EXPO

NEC BIRMINGHAM

IMAGE COURTESY OF: TIMBER EXPO

As one of the main supporters, the Structural IMAGE COURTESY OF: TIMBER EXPO

Timber Association and its members will play an integral part in the UK’s leading timber trade show, explaining the merits of timber to an

ACROSS TIMBER EXPO, A HUGE RANGE OF ALMOST 200 COMPANIES FROM ALL FOUR CORNERS OF THE TIMBER INDUSTRY WILL BE UNVEILING THEIR LATEST PRODUCTS AND SERVICES. THE STA AND ITS MEMBERS WILL BE INVOLVED IN MANY ASPECTS OF THE SHOW AND WILL BE HOSTING MANY OF THE TIMBER FOCUS SESSIONS IN THE SPECIAL STA SEMINAR THEATRE SPONSORED BY EULER HERMES AND BUILT BY STA MEMBERS INCLUDING;

audience of architects, designers, engineers and contractors, local authorities and a wide range of those working in the built environment.

The STA Seminar Theatre This will host a range of keynote speakers from across the timber, engineering and architectural sectors. For the first time, the STA has secured the main seminar theatre at the event with the theatre itself being built by STA members.

20

TIMBER EXPO 2014 – EVERY THING TIMBER

STRUCTURAL TIMBER MAGAZINE | ISSUE 01 | AUTUMN 2014

Be Informed at Timber Focus Learn first-hand from industry experts – the FREE Timber Focus seminar programme offers an unrivalled collection of high calibre speakers focusing on future trends and niche areas.

Revamped by organisers TRADA for 2014 with an extra emphasis on case studies and real life examples of timber in action, this is a key element to the show and a central part of the overall Timber Expo experience. The Timber Focus seminar programme takes in all sectors of the built environment.

IMAGE COURTESY OF: TIMBER EXPO

THE EIGHT SEMINAR STREAMS Pushing Boundaries: Stretching Imaginations Tuesday 07 October Engineers and Timber: Ingenious Structures Tuesday 07 October Resource: Directors’ Briefings Tuesday 07 October From Blueprint to Building: A Client and Contractor Perspective

IMAGE COURTESY OF: TIMBER EXPO

Tuesday 07 October

Hands-on Advice - Toolbox Talks

Get Connected – Buyers & Specifiers Forum

Sense of Space:

Popular and well received last year, Toolbox Talks

Many STA members can be found here,

Creating Great Places to Live, Work and Play

returns with a huge roster of new participants.

networking with over 100 industry innovators

Wednesday 08 October

The FREE Toolbox Talks workshop programme

and leaders within the timber sector. Sponsored

provides direct access and information on

by Vandecasteele, these 30 minute appointments

Innovation:

the latest timber processes, technologies and

are acknowledged as one of the most successful

Designing The Future

specialist products.

parts of Timber Expo giving attendees a perfect

Wednesday 08 October

way to build business relationships in a formal These FREE CPD presentations will

but relaxed environment. The forum is a unique

Training and Talent:

focus on the detail of processes, technologies

environment to meet privately with exhibitors

Growing Your Business Through People

and solutions on display at the show. From

in the comfort of the Forum lounge. The Forum

Wednesday 08 October

manufacturing process to onsite engineering

provides the opportunity to extend crucial

solutions, Toolbox Talks will complement Timber

supplier networks and to find out more about

Architects and Timber:

Focus and take place in two custom-built

the latest product innovations.

Striking Designs

theatres. These are expected to be extremely

Wednesday 08 October

popular, so make sure you get there early.

TIMBER EXPO 2014 – EVERY THING TIMBER

21

STRUCTURAL TIMBER MAGAZINE | ISSUE 01 | AUTUMN 2014

IT WAS AT LAST YEAR’S EVENT THAT THE STA REBRANDED FROM THE UK TIMBER FRAME ASSOCIATION, SO THIS YEAR’S EXHIBITION GIVES US THE TIME TO TAKE STOCK OF OUR ACHIEVEMENTS OVER THE PAST TWELVE MONTHS.

IMAGE COURTESY OF: TIMBER EXPO

IMAGE COURTESY OF: TIMBER EXPO

Andrew Carpenter, Chief Executive

The area will also feature an STA lounge, where

Timber Expo has allocated the whole

of the STA says:

members can host meetings and network with

morning on Wednesday 08 October to

“The aim is to build a structure collaboratively,

current and potential clients throughout the

discuss BIM4HOUSING in the Toolbox Talks

with members working together to contribute

event. The construction of the STA seminar

Seminar Theatre.

time, skills, expertise and materials. This will be

theatre provides the opportunity to showcase the

the first large-scale project our members have

latest in structural timber technologies.

worked on together, although we will draw on the

For more information visit: www.timber-expo.co.uk

experience of our new colleagues from UKSIPS,

The venture also allows us the chance to present

who have worked together to deliver large

our skills of collaboration and partnership; an

structures of this type at previous events.

area in which our industry currently excels. With the need for partnership working rising up the agenda of the construction industry with the introduction of BIM, this gives us the chance to show just what we can do. It was at last year’s event that the STA rebranded from the UK Timber Frame Association, so this year’s exhibition gives us the time to take stock of our achievements over the past twelve months. It will also give us the chance to explain our vision for the remainder of 2014, and into 2015.”

REGISTER FREE TO ATTEND TIMBER EXPO AT www.timber-expo.co.uk/book FOR MORE INFORMATION VISIT: www.timber-expo.co.uk or www.structuraltimber.co.uk

22

TIMBER EXPO 2014 – EVERY THING TIMBER

www.timber-expo.co.uk

THE UK’S NATIONAL TIMBER EVENT For built environment professionals looking to work with the leading sustainable building material REGISTER FREE TO ATTEND AT:

www.timber-expo.co.uk/book

2015 DATES CONFIRMED: 06 & 07 OCTOBER Early bird exhibitor rates available up to the end of December 2014

To book exhibition space please contact: Loretta Sales T: +44 (0)7956 173351 E: loretta.sales@timber-expo.co.uk David Smith T: +44 (0)7932 188881 E: david.smith@timber-expo.co.uk

STRUCTURAL TIMBER MAGAZINE | ISSUE 01 | AUTUMN 2014

MEASURING THE PERFORMANCE GAP This summer, the performance gap has been on everyone’s agenda thanks to a report published in July by the Zero Carbon Hub. Martin Milner, the STA’s technical consultant explains what the report means for the structural timber sector.

The Zero Carbon Hub set up the study to examine the reasons why the energy performance of new homes wasn’t living up to expectations, and what stands in the way of us meeting the UK government’s target for new-build housing to generate zero net carbon

THE ZERO CARBON HUB HAS SET A TARGET THAT FROM 2020 AT LEAST 90% OF ALL NEW HOMES SHOULD MEET OR PERFORM BETTER THAN THEIR DESIGNED ENERGY PERFORMANCE.

emissions by 2016.

For a while now there has been growing concern

Specific problem areas were also highlighted,

in the industry about the perceived gap between

such as poorly fitted insulation, incorrectly

design intent and as-built performance.

installed windows and even the fabric not being

Undoubtedly, low carbon/low energy solutions

put together properly.

are integral to the future of sustainable

FOR THOSE WHO HAVE MANAGED TO MISS IT, THE END OF TERM PERFORMANCE GAP REPORT IS THE RESULT OF AN 18 MONTH STUDY INTO WHAT IS CALLED “THE PERFORMANCE GAP” – BY WHICH WE MEAN THE DIFFERENCE BETWEEN HOW A BUILDING’S THERMAL INPUT IS DESIGNED TO BE, AND HOW IT WORKS DURING OCCUPATION.

housebuilding. What we need to look at as

The Zero Carbon Hub has set a target that from

an industry is constructing homes to better

2020 at least 90% of all new homes should

standards, in a holistic manner, and with built-in

meet or perform better than their designed

performance assurance. It is clear from the

energy performance. It’s clear from the report

reports that the industry at large has struggled

that in order to achieve this, the entire

to achieve targets, and the message to increase

construction industry will need to undergo a

the fabric energy efficiency has not been

culture change.

successfully delivered at a commercial level.

To understand where the problems lay, the Zero Carbon Hub set up industry expert working groups, and the findings showed that the industry as a whole is failing to meet requirements.

Issues included: inadequate testing and assessment techniques; poor education; limited understanding of energy performance; and fragmented communication between the different parts of the supply chain.

24

MEASURING THE PERFORMANCE GAP

STRUCTURAL TIMBER MAGAZINE | ISSUE 01 | AUTUMN 2014

Structural Timber and the Performance Gap

Joined-up Supply Chain

The good news for structural timber is that

As well as strengths with the material and

our industry is already addressing many of the

manufacture, the culture of the timber industry is

concerns outlined in the report, and structural

already in a good position. The problem with the

timber building methods have a very strong role

supply chain throughout the construction sector

to play in minimising the gap.

- as demonstrated in the Hub’s report - is that the build process can easily be deconstructed

Without a doubt, timber delivers sustainable

and fragmented in order to save costs, which

and energy efficient solutions. Design and build

means that the responsibility at each stage

structural timber offers low embodied carbon;

is passed on to a different person or trade

a choice of insulation performance; airtight

without the correct knowledge of the material.

construction; proven products and details;

Fundamentally, this problem comes down to a

calculated thermal bridging psi-values; minimal

breakdown in communication.

EVIDENCE SUGGESTS THAT IT IS ALSO EASIER TO MANAGE PERFORMANCE WHEN CONSTRUCTING WITH STRUCTURAL TIMBER METHODS, THANKS TO THE HIGHER LEVEL OF OFFSITE PREFABRICATION INHERENT IN THIS BUILDING METHOD.

waste; speed of construction; solutions without needing renewables; a supply chain choice

A significant USP for structural timber is the

and offsite manufacture in a quality controlled

fact that our industry already has a joined up

environment. It’s an incredibly strong list!

supply chain. The collaboration that is possible with timber methods is what gives us stand out

Evidence suggests that it is also easier to

in responding to this report. It is possible for

manage performance when constructing with

the clients’ design team and the timber system

structural timber methods, thanks to the higher

supplier to work together and have a totally

level of offsite prefabrication inherent in this

integrated design, manufacture and erector

building method. This is particularly the case for

supply chain, providing customers with speed,

the junction performance, where the work done

efficiency and quality, every time.

IMAGE COURTESY OF: FRAME WISE

in the factory allows for greater control of the elements, and the junctions are considered

This also links with the adoption of Building

before it gets to site. It is not only easier to

Information Modelling (BIM). The report includes

monitor quality in the factory environment, but in

a recommendation for BIM to be used to help

addition, the all-critical insulation is positioned

achieve design continuity by monitoring and

such that it is able to work more effectively

controlling changes during the construction

– thereby reducing the risk of environmental

process through to handover. The limitation here

conditions, or work from another trade,

is that BIM requires someone to coordinate and

negatively impacting on it.

process it - which for house building may not yet be a practical solution. While BIM is an ideal

Offsite construction is a vital part of the solution

vehicle to deliver efficiencies, the timber supply

to the performance gap. It ensures quality which

chain can work without BIM while it evolves. If

can be monitored at every stage, unlike other

the timber manufacturer is engaged at the right

methods which are reliant on a multitude of

time and as part of the project team, joined up

trades with no interest in the next phase of the

solutions are achieved through communication

build programme.

and taking responsibility for the envelope.

A SIGNIFICANT USP FOR STRUCTURAL TIMBER IS THE FACT THAT OUR INDUSTRY ALREADY HAS A JOINED UP SUPPLY CHAIN. THE COLLABORATION THAT IS POSSIBLE WITH TIMBER METHODS IS WHAT GIVES US STAND OUT IN RESPONDING TO THIS REPORT.

Factory based activities allow better and safer working conditions, while also protecting the workers from the changeable British climate, which is more likely to lead to better quality work!

MEASURING THE PERFORMANCE GAP

DOWNLOAD THE PERFORMANCE GAP REPORT FROM: www.zerocarbonhub.org/current-projects/ performance-gap

25

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STRUCTURAL TIMBER MAGAZINE | ISSUE 01 | AUTUMN 2014

IN 2013, THE STA RECOGNISED THE NEED TO BOTH UP-SKILL AND TRAIN MORE TIMBER FRAME ERECTORS, SO CREATED A MENTORING AND TRAINING PROGRAMME TO IMPROVE THE SKILLS OF ITS ERECTOR MEMBER COMPANIES. Education and Skills

Cultural Selling and Buying Revolution

The overall message of the report suggests that

While structural timber is certainly heading in

a change in culture is required, and core to this

the right direction to meet the Hub’s targets and

is an overhaul of training and qualifications –

suggested ethos, the challenge which faces

something that the STA fully supports. The STA

the industry as a whole is getting this message

works with members to provide CITB backed

across to the end-users. It is only when

toolbox talks and training for assembly teams, as

consumers understand the benefits of low

well as workshops on best practice; factory tours

energy homes that structural timber will really

to educate the entire supply chain; and advice

come into its own.

notes and documents on design, technical and

To get a more efficient home, the initial outlay is

quality assurance.

inevitably higher, and what the industry needs to promote is that by choosing a low energy

In 2013, the STA recognised the need to both

home the consumer is guaranteed long term

up-skill and train more timber frame erectors, so

value through reduced lifetime operating costs.

created a mentoring and training programme to

Energy efficiency currently plays little or no part

improve the skills of its erector member

in home-buying decisions – and this is reflected

companies. The Association rightly identified

in how housebuilders market new homes.

that its erector members required a significant amount of up-skilling to take advantage of the

With the price of energy continuing to rise, a

upturn in the market as well as the increasing

building’s operational performance will inevitably

popularity of timber as a construction material.

become something that consumers will focus

This proved very successful, and is something

on more in the coming years - and this is

that the STA is rolling out further.

something that needs more focus. When people

WITH THE PRICE OF ENERGY CONTINUING TO RISE, A BUILDING’S OPERATIONAL PERFORMANCE WILL INEVITABLY BECOME SOMETHING THAT CONSUMERS WILL FOCUS ON MORE IN THE COMING YEARS

understand the value of a truly efficient home, they will appreciate that they are getting a better product; they will be prepared to pay for it and they will start to demand it.

The culture change needs to happen throughout the whole of the supply chain, and right through to the homebuyer before we can undergo this revolution. Joined up thinking and education are the key points to take from the report, and this extends from design to deeds.

MEASURING THE PERFORMANCE GAP

IF YOU WOULD LIKE TO DISCUSS ANY OF THE ISSUES RAISED IN THIS ARTICLE EMAIL MARTIN MILNER ON: martin.milner@structuraltimber.co.uk

27

STRUCTURAL TIMBER MAGAZINE | ISSUE 01 | AUTUMN 2014

HOUSING SUPPLY AND OFFSITE OPPORTUNITIES The shortage of housing stock across the UK and how to solve it is a perennial problem and one of the most talked about topics in construction. The potential for timber building systems and offsite manufacture to bring a high quality and speedy solution is enormous.

A STRONG ATTRIBUTE OF OFFSITE CONSTRUCTION AND TIMBER SYSTEMS IS THE ABILITY TO DELIVER HOMES TO VERY HIGH STANDARDS OF THERMAL INSULATION AND AIRTIGHTNESS WITH A LOW CARBON, RENEWABLE MATERIAL. IMAGE COURTESY OF: PINEWOOD STRUCTURES

Although exacerbated by the recession, the UK’s

The report spelled out clearly a number of

housing shortfall increases each year with new

characteristics offsite technology has that neatly

build rates low and increased waiting lists for

match the future housing market saying:

social housing and private rentals rising. Add

“A marked increase in the rate of build whilst, at

to this an increasing population, changes in

the same time, demanding a marked increase in

demographics due to increased life expectancy

build standards (Part L). We require that

and difficulties for mortgages and finance, and

accidents and incidents at site continue to

the problems quickly mount.

reduce, despite a significant increase in activity and we require that more houses are built,

A strong attribute of offsite construction and

regardless of the diminishing pool of skilled

timber systems is the ability to deliver homes to

tradesmen.”

very high standards of thermal insulation and airtightness with a low carbon, renewable material.

Offsite fabrication in a quality-controlled factory environment leads to a number of efficiency

In 2013, the Construction Industries Council

and environmental benefits, from reduced

(CIC) produced a state-of-the-industry report into

onsite labour, shorter construction timescales

housing supply and advanced manufacture

and fewer product faults, to better health and

– Offsite Housing Review 2013 – that set out

safety, reduced overheads and quicker returns

a route-map to bring improvements and a

on investment.

streamlined approach to building more homes across the UK.

28

HOUSING SUPPLY AND OFFSITE OPPORTUNITIES

STRUCTURAL TIMBER MAGAZINE | ISSUE 01 | AUTUMN 2014

THERE IS ALSO £400 MILLION FUNDING FROM GOVERNMENT AND THE GREATER LONDON AUTHORITY TO CREATE 20 NEW HOUSING ZONES ON BROWNFIELD LAND IN LONDON, AS WELL AS £200 MILLION OF ADDITIONAL GOVERNMENT FUNDING AVAILABLE FOR 10 ZONES OUTSIDE LONDON. THIS FUND AIMS TO SUPPORT DELIVERY OF HIGH QUALITY HOMES QUICKLY.

There are further opportunities for offsite

An industry-driven steering group is now in

Much of this will be done with the help of

methods that relate to the business model of

place to take up a number of key challenges to

supporting manufacturing facilities through

factory built systems. A site required to build

drive forward generational change in housing

funding support, some of which is already

homes using offsite construction is a fraction of

production, build and supply using offsite

available from Government. This includes the

that required for conventional building processes

methods.

Affordable Housing Programme – the

– this reflects directly in the cost of financing construction. This is ideal for building multi-occupancy dwellings where the first rental

2015-18 funding allocations are expected to These surround: • Generating a single industry voice for

can only be realised once the last dwelling has

offsite manufacturers to engage with

been completed.

housebuilders and take into account the

be announced shortly – and show a significant increase in the numbers of housing being built through offsite construction.

needs of all organisations involved in

There is also £400 million funding from

The Offsite Housing Review 2013 points out that:

housing developments from public as

Government and the Greater London Authority to

“If housebuilders were given an infinite supply

well as private sectors

create 20 new housing zones on brownfield land

of ‘oven ready’ plots for development, and an

• Revamping the brand and overall image to

in London, as well as £200 million of additional

infinite queue of purchaser/tenants, the limiting

make offsite built homes more appealing

government funding available for 10 zones

constraint on their output would be the working

to developers and homeowners. This

outside London. This fund aims to support

capital required to build on all those plots. This

includes more media work and marketing

delivery of high quality homes quickly.

is a particular constraint in the social housing

focus on products, systems and raising

sector, where most RSL’s have limited balance

awareness within Government of what

Andrew Carpenter, Chief Executive of the STA

sheets and small cash resources. The standard

manufacturers and developers can do.

said: “Our members realise the growing

business model of the factory-built product is

• Reassuring everyone that offsite products

importance of the role they must play as we

that the customer pays for the product once it

are high quality and durable. More work

strive to ramp up the numbers of houses built

has been delivered (and, even, commissioned).

needs to be done on quality assurance

each year in a sustainable manner. The

In this model, the working capital requirement

of new homes and boosting the profile

environmental properties of timber together with

passes to the supplier, thus relieving the builder

of the assurance processes amongst

the benefit of speed of construction through

of that burden.”

consumers, developers and lenders.

offsite construction, puts timber frame and all

• Making sure that offsite manufacturing

other methods of structural timber at the heart of

can handle the capacity and scale of

the UK’s future house building programme, and

housing requirements. This is critical

we are ready to accept that challenge

alongside the wider skills development

and responsibility.”

across the construction industry.

THE OFFSITE HOUSING REVIEW 2013 REPORT CAN BE FOUND HERE: www.cic.org.uk/news/article.php?s=2013-0228-cic-presents-housing-minister-with-offsitehousing-review-report

IMAGE COURTESY OF: SPACE 4

HOUSING SUPPLY AND OFFSITE OPPORTUNITIES

29

STRUCTURAL TIMBER MAGAZINE | ISSUE 01 | AUTUMN 2014

TIMBER – AN EVOLVING SECTOR The Structural Timber Association (STA) represents around 85% of structural timber manufacturers in the UK. Lawrence Young was appointed chairman of the UK Timber Frame Association (UKTFA) in January 2013 on a two year remit and has overseen its rebranding to the STA. He took some time out to answer a few questions on the fresh approach of the STA, member benefits and its place as one of the leading UK construction trade associations.

Q&A

Q: What are the STA’s main objectives?

Our core focus is to promote and increase the use of structural timber within the UK construction industry.

IMAGE COURTESY OF: TIMBER EXPO

THE ASSOCIATION IS 12 YEARS OLD AND WAS FORMED AS PART OF A MERGER BETWEEN TWO SEPARATE TIMBER FRAME ASSOCIATIONS – ONE IN SCOTLAND AND ONE IN ENGLAND.

We aim to raise standards in sustainability, quality, innovation, health and safety, skills and

Q: Tell us a little bit about the

training, technical knowledge and customer

background of the STA?

service within the structural timber sector. As

The Association is 12 years old and was formed

part of this work, we also demonstrate the value

as part of a merger between two separate timber

that membership of the Association brings.

frame associations – one in Scotland and one in England. In 2013, we rebranded from the UKTFA

Q: Why is your membership so strong?

to the STA in a response to the changing market.

We have over 250 members, who represent a

We recognised that the products many of our

broad cross section of UK structural timber

members were offering had evolved from just

technology and system providers.

timber frame, so we extended the remit of the Association accordingly.

Our membership is strong because our members can see the value that we bring: we

FOR FULL BENEFITS OF MEMBERSHIP DOWNLOAD DETAILS AT: www.structuraltimber.co.uk

30

We now represent not just timber frame, but all

provide leadership for structural timber

structural timber products, including Cross

manufacturers, supply chain, designers and

Laminated Timber (CLT), Structural Insulated

erectors and work hard to differentiate between

Panels (SIPS) and Glulam.

members and non-members.

Key to our work is protecting the reputation of

Being a part of the Association puts members in

timber frame, making sure that people recognize

touch with many and varied stakeholders who

what it means to build with timber in the 21st

are looking to develop timber frame projects,

century, and encouraging the future growth of

along with support in the form of lobbying, PR,

the sector.

marketing, training and research and development.

TIMBER: AN EVOLVING SECTOR

STRUCTURAL TIMBER MAGAZINE | ISSUE 01 | AUTUMN 2014

IMAGE COURTESY OF: TIMBER EXPO

IMAGE COURTESY OF: STA

Q: What other benefits

Q: What is the organisation’s

do your members receive?

vision for the future?

Membership brings genuine commercial benefits

We predict that there will be an increase in the

through technical insights, client referrals,

use of timber over the coming years, across all

access to unique training and industry

sectors and encompassing more of the hybrid

recognised credibility. It is also about being part

solutions, such as CLT, SIPS and Glulam. With

of an organisation that influences government

heightened awareness of the environmental and

and industry on behalf of the timber sector –

efficiency benefits of timber, the forecast for the

extolling the role the material can play in the

industry is good. We believe that timber will

current drive for sustainable construction.

become increasingly popular with the public sector, with timber building in this sector

Because of our work on quality, training and

forecast to outstrip the growth of other methods

technical excellence, some businesses – such as

by 2015.

BECAUSE OF OUR WORK ON QUALITY, TRAINING AND TECHNICAL EXCELLENCE, SOME BUSINESSES – SUCH AS HOTEL AND RESTAURANT OPERATOR, WHITBREAD – HAVE PUBLICLY STATED THAT THEY WILL ONLY WORK WITH STA MEMBERS.

OUR MEMBERS ALSO BENEFIT FROM OUR CONFERENCES, EXHIBITIONS AND TRADE SHOWS, AS WELL AS OUR ONGOING PROMOTION OF TIMBER FRAME ACROSS ALL SECTORS OF THE UK CONSTRUCTION INDUSTRY.

hotel and restaurant operator, Whitbread – have publicly stated that they will only work with STA

With the recent upturn, we are already finding a

members. By being part of the STA, members

significant increase in the industry. We’re seeing

can access these contracts while reassuring

housebuilders and developers needing to react

potential customers of their credibility through

to changes in market conditions and bring new

our quality assurance. Members can also access

sites to market quickly, and in response to this,

unique training courses on topics including

many are turning to structural timber. We believe

health and safety, technical developments and

that when housebuilders come to us and truly

business management.

understand the many benefits of the material,

WE BELIEVE THAT WHEN HOUSEBUILDERS COME TO US AND TRULY UNDERSTAND THE MANY BENEFITS OF THE MATERIAL, THEY’LL NEVER LOOK BACK.

they’ll never look back.

Our Technical Committee produces advice notes and research documents that are available

We have thrown down the gauntlet to the

only to members on topics such as Part L, Fire

Government, calling on it to increase the amount

Safety Guidance, CE marking and timber design.

of housing stock built using timber technology to

And, perhaps most importantly, we enforce

30% by 2018. We will continue to work hard in

the industry leading initiative, Site Safe, which

all areas to achieve this goal.

ensures that member manufacturers working on

.……………………………………………

large projects give clear, concise information and

Email: l.young@youngblack.co.uk

assistance to the principal contractor regarding

www.structuraltimber.co.uk

IMAGE COURTESY OF: SCOTFRAME

fire safety on construction sites.

Our members also benefit from our conferences, exhibitions and trade shows, as well as our ongoing promotion of timber frame across all sectors of the UK construction industry.

IMAGE COURTESY OF: STEWART MILNE

TIMBER: AN EVOLVING SECTOR

31

STRUCTURAL TIMBER MAGAZINE | ISSUE 01 | AUTUMN 2014 CASE STUDY: Education

The STA have created a case studies section on the website, so members can share their successes and provide detailed description of their projects. These Case Studies contain technical details on the design process and installation.

FURNESS ACADEMY

IMAGE COURTESY OF: X-LAM ALLIANCE

IMAGE COURTESY OF: X-LAM ALLIANCE

Furness Academy has been hailed as a groundbreaking project – one of the largest educational facilities to be developed in the UK, using cross laminated timber (CLT) as the core structural component.

The selection of CLT as the principal material has enabled the main contractor to reduce programme time for the frame construction as well as accelerating follow-on packages by integrating architectural and building services opening requirements into the fabrication process. A cascading, visually exposed CLT staircase forms a central hub to

Cumbria County Council had an urgent

This improved the general building arrangement,

the Academy. Careful structural design was

requirement for a new academy to be formed

consisting of two advanced

required in order to maximise the visual impact

from the existing Alfred Barrow Thorncliffe and

teaching spaces either side of an internal

and showcase the aesthetic appeal and natural

Park View Schools – proposing a development

corridor. Working closely with the manufacturer

warmth of the exposed engineered timber. As

across the two sites - North and South. From

and specialist contractor team, a 20m super XL

well as being a focal point, the staircase forms a

the initial concept for a split facility the target for

panel was selected to span the full width of the

connection between the two wings and the ICT

the new Furness Academy was to accommodate

block. This permitted a structurally and thermally

suite. CLT is used to great practical and visual

1,200 pupils by the academic year 2013/14.

efficient continuous slab, offering an added

effect in the main sports hall. The fully enclosed

benefit of speed of erection.

CLT box with long span glulam roof beams, offers

The structural requirement was to maximise the

good sound insulation and a robust surface –

flexibility of the learning environment by providing

The project is one of the largest CLT schools in

ideal for a sports hall. The co-ordination of roof

a 7m clear span between external and internal

the UK, featuring a hybrid structure to produce an

panels and spacing of beams are sympathetic to

CLT walls.

efficient optimised design, using a combination

the overall aesthetic appeal of the space.

of CLT and structural steelwork to create spaces

STA MEMBER.................................. X-LAM Alliance CLIENT................................. Cumbria County Council ARCHITECT........................................ Halliday Clark MAIN CONTRACTOR....................... Kier Construction ENGINEER...................................................... BDP TECHNOLOGY................ Cross Laminated Timber (CLT) A COMPREHENSIVE EIGHT PAGE CASE STUDY ON THIS PROJECT CAN BE DOWNLOADED FROM: www.structuraltimber.co.uk/members/case-studies

32

that respond to the architectural brief. In reduced

In total an astounding 1988 white wood spruce

span areas CLT walls are used. The project

CLT panels and 184 tonnes of steel were

exposes the visual quality of the material in

delivered over the course of the 22 weeks in 57

selected use areas such as sports and assembly

loads. The Academy has achieved outstanding

halls. In these areas double height walls are

environmental performance for the structural

combined with glulam or steelwork to create

frame with sequestered carbon values of -1395

light and flexible facilities for the school.

tonnes of CO2.

CASE STUDY: X-LAM ALLIANCE - FURNESS ACADEMY

STRUCTURAL TIMBER MAGAZINE | ISSUE 01 | AUTUMN 2014 CASE STUDY: Commercial

PLYMOUTH UNIVERSITY compared with other construction methods.

Timber frame promotes greater efficiency and supply chain integration and brings predictability and greater control to the construction process.

It also reduces the embodied carbon dioxide of a building when used instead of more energy intensive materials. This can be up to six times lower than masonry. For every cubic metre of wood used instead of other building materials, 0.8 tonne of CO2, is saved from the atmosphere IMAGE COURTESY OF: STEWART MILNE

– with the average timber frame home saving around four tonnes.

Plymouth University’s first on-campus combined student and medical staff accommodation at the Knowledge Spa, Royal Cornwall Hospital is a bespoke £8.5 million sustainable development that will benefit Cornwall’s future doctors, dentists and other frontline health professionals at the county’s premier health education hub.

Sustainable building was fundamental to the project, and a key aim was to achieve BREEAM Excellent rating. A semi closed pre-insulated panel has been specified to provide the required U- value of 0.21 W/m2K for the walls. The specification was a reflective breather membrane on to a 9mm OSB rack¬ing board, fixed to a 140mm panel with 120mm urethane insulation factory fitted into panels. A pre-fabricated cassette floor was also used to achieve tight build programme on site.

For developers, it is imperative that student

With Plymouth University’s award winning

The development was driven by the desire

accommodation projects are delivered on

reputation for sustainability, the 232 bed

to avoid an institutional feel or appearance.

schedule because missing term deadlines could

development comprises seven blocks of four

Timber frame projects were relatively new to

have major implications. Speed and predictability

storey units, arranged as a series of self-

this division of BAM Construction, so partnership

of build are essential and due to offsite

contained four and five bedroom flats. The

was crucial. Stewart Milne Timber Systems

construction, timber frame is one of the best

blocks are arranged informally around a central

worked closely with the team from an early

materials for delivering large scale projects fast

landscaped area, with materials such as timber

stage, engaging with the design team from the

and effectively.

frame, Siberian Larch rain screen cladding and a

start and were in continuous dialogue with BAM

low pitched standing seam zinc roof selected to

Construction to ensure a final design in line with

complement the woodland surroundings and to

the overall programme timetable. This is time

create an entity distinct from that of the hospital.

well spent and ensures that the project runs

Working with main contractor BAM Construction,

smoothly thereafter.

Stewart Milne Timber Systems used a Fabric First approach in order to meet the required

Quality assured offsite manufacture significantly

U-value of 0.2W/m K, by providing a semi closed

simplifies construction, resulting in less onsite

pre-insulated panel system.

waste (as much as 20-40% less) when

2

CASE STUDY: STEWART MILNE - PLYMOUTH UNIVERSIT Y

STA MEMBER............... Stewart Milne Timber Systems CLIENT....................................... Plymouth University MAIN CONTRACTOR...................... BAM Construction ARCHITECT.......... Burwell Deakins & Grainge Architects ENGINEER................................................. Hydrock TECHNOLOGY........... Semi-Closed Panel Timber Frame A COMPREHENSIVE EIGHT PAGE CASE STUDY ON THIS PROJECT CAN BE DOWNLOADED FROM: www.structuraltimber.co.uk/members/case-studies

33

STRUCTURAL TIMBER MAGAZINE | ISSUE 01 | AUTUMN 2014 CASE STUDY: Residential

HANHAM HALL 6 whilst being acceptable to all stakeholders – hence the structured engagement programme with the wide range of interested parties. The building envelope was constructed using Kingspan’s patented TEK® prefabricated structural insulated panels (SIPS).

SIPS are an advanced method of construction, offering superior insulation, structural strength and air-tightness over traditional construction IMAGE COURTESY OF: KINGSPAN TIMBER SOLUTIONS

methods or systems.

This groundbreaking project is the first site in the government’s Carbon Challenge initiative and is designed to test the Code for Sustainable Homes to its highest performance criteria – Code Level 6.

SIP panels are used primarily in wall and roof applications for residential, industrial, educational and commercial applications, providing energy efficient building structures with proven sustainability credentials. The Kingspan TEK Building System comprises 142 mm thick structural insulated panels connected with a unique jointing system for walls and roofs, and intermediate floors using I-beams or open web

Located 7km from the centre of Bristol, Hanham

Scheduled to become one of the first zero

joists. The panels consist of a high performance

Hall is a Grade II* listed building dating from

carbon communities in England – 187 new

rigid urethane insulation core, manufactured with

the mid-17th century. Originally a farm and

homes were proposed in the grounds of Hanham

a blowing agent that has zero ozone depletion

substantial family home surrounded by extensive

Hall, totally restoring and transforming them to

potential and low global warming potential. In

gardens and open land, it became a psychiatric

become a community hall with a cafe and offices.

addition to Kingspan’s patented TEK

hospital in around 1900. Since the hospital

Green open spaces are a key feature of the

prefabricated structural insulated panels, every

closed in 2000, the Hall was left unoccupied and

development, with allotments, orchards, hedges,

property at Hanham Hall has high performance

fell into disrepair until its recent transformation.

ponds, cycle and walking routes.

timber windows and insulated doors, designed to

The nine-hectare site is bordered by suburban

allow residents to reduce their carbon footprint

housing to the north, south and west. To the

To meet the challenges of this demanding brief,

east, it adjoins green belt, enjoying open views

the client, Barratt Homes and Architects HTA

of rolling countryside.

engaged with the Parish Council, the Homes and

Hanham Hall is an award winning eco village and

Communities Agency, English Heritage, South

now one of the most important energy efficient

Gloucestershire Council, the Green Belt Society

new housing developments in the UK. The

and local residents. As a key member of the

development has become a recognised

supply chain Kingspan Timber Solutions was

benchmark for future schemes.

STA MEMBER.................... Kingspan Timber Solutions CLIENT............................................. Barratt Homes ARCHITECT........................................... HTA Design MAIN CONTRACTOR.......................... Barratt Homes PARTNER.................... Homes & Communities Agency TECHNOLOGY........... Structural Insulated Panels (SIPS) A COMPREHENSIVE EIGHT PAGE CASE STUDY ON THIS PROJECT CAN BE DOWNLOADED FROM: www.structuraltimber.co.uk/members/case-studies

34

by 60 percent without any lifestyle changes.

involved with the project from day one.

The most significant challenge at the Hanham Hall development was to design a scheme to meet the stringent requirements of Code Level

CASE STUDY: KINGSPAN TIMBER SOLUTIONS - HANHAM HALL

High performance building solutions RESIDENTIAL

EDUCATION

COMMERCIAL

HEALTHCARE

LEISURE

DEFENCE

Anglo European School, Essex

Premier Inn, Ipswich

Center Parcs, Woburn Forest

Hanham Hall, Bristol

William Street Quarter, Barking

Hayes, Middlesex

Oaks Day Nursery, University of Kent

Avante, Maidstone

Download the case studies at

• Structural frame and highly insulated fabric in one rapid build system

kingspantimbersolutions.co.uk/info

• Advanced Timber Frame, Structural Insulated Panels, Cross Laminated Timber and Hybrid Solutions for all building types

• Sustainable MMC Construction with full Chain of Custody and low embodied energy

WILLIAM STREET QUARTER, BARKING

HANHAM

OO AN SCH EUROPE ESSEX ANGLO STONE, INGATE

TYPE: Affordable Housing

round

building envelopes with excellent air-tightness and minimal thermal bridging

L,

CUSTOMER: Laing O’Rourke CLIENT: London Borough of Barking & Dagenham COMPLETION DATE: June 2014 TYPE: New houses CUSTO MER: Barratts CONSU LTANT : Arup CLIEN T: HTA Design COMP LETIO N DATE: November

This was a complex project with some challenging processes however the end result is e stunning leng and testament to whole team involved.

Chal Grillet &

The Challe

nge

2014

Project Backg

• Enables cost effective high performance

OAKS UNIVE DAY NURS RSITY ER OF KE Y, NT

HALL – BRIS TOL

Hanham Hall is the first site in the Challenge government’s initiative – designed to Carbon Sustainable test the Code Homes to for its highest It is schedule level – namely d to become level communities one of the first zero carbon 6. in England.

To with design team partners achieve this, HTA engaged and Commun , the Parish Council, the ities Homes Gloucestershire Agency, English Heritage , South residents and council, the Green Belt Society, supply chain Homes and partners including local Kingspan Timber Barratt Solutions.

Each property has high perform and insulated doors designed ance timber windows reduce their carbon footprint to allow residents lifestyle changes by 60% without to . any

The homes were made elements constructed from factory to minimise which are waste and energy build. Kingspan efficient to produce and asked to supply Timber Solutions were tion : Educa TYPE 185 new homes specialist panel frames for : T J Evers grounds. The in beautifully landscap OMER CUSTed : June 2014 houses were using Kingspan constructed ION DATE prefabricated ’s patented TEK®COM PLET structural insulated panels.

Quality Assur ed

®

Building

System

The

ts Lyster architec with some The project ed a design e , develop extensiv

g; Harding e s includin entranc Project Background tricky feature a large glazed windows,

a cost provides atible with

walling.

William Streetry Quarter is located on curtain the former Lintons Estate in Barking and is cleresto two storey the site forand areas of hall the first new council homes to be built in Barking & Dagenham for 25 normal years. Comprising 201 affordable homes to the with a mix of one, two, three and four of in addition bed accommodation pose in a range of flats, duplex blocks and traditional terraced This was that schools housing, it is already ationsbeing hailed a ,regeneration enhanced success story. complic and collapse

The Challenge KTS was asked by Laing O’Rourke to construct high performance external envelopes using a timberbased structural solution for the homes at William Street Quarter- without using scaffolding. This was achieved together with our accredited construction

partners Regal Carpentry who erected the TYP E: structures.Educ We employ ation the best people in the CUS industry working closely and collaboratively with TOM ER: our customers Univ to ensure Jennproject quality and success. ersity er Grou of Kent p on beha COM lf of Quality PLE TIOAssured N DAT As a company, we recognise a collective responsibility E: Decembe to protect the environment and optimise waste r 2013 management.

Through our design, manufacture and construction processes we minimise and where

possible eliminate waste, reusing, recycling and Projec recovering materials as appropriate. t Backgr ound

Following KTS offers a world

class, flexible UK based ortiona the decis on comp pan TEK As a company large span existing manufacturing In 2008,disprop as part of the London in the ance, Borough of Barking , The Kings facility & Dagenham’s estate renewal e on this is accredited to ISO inable soluti perform day nurs ion that and responsibility we recognise a collective s to assist ). programme, plans 9001, acoustic the Univ a Masterplan for a real challeng aupfirst and susta ery was to protect between the council and the and OHSAS were ISO 14001 loads; the site was drawn 18001 for quality e of ersit the environm floor n programme g Programme (PSBP and optimise effective drawn residents,higher no long to replace to repla management, presenc y of Kent the council tower blocks that had stood for nearly 45 years. ent waste managem of the environmental to build management constructio er and ’s ce it.

Buildin our design, fit for because Although earmarked ent. Through With a a cont fast-track scheme as an area in desperate need of attention, due to funding manufacture purpose, y Schools andasafety. emphealth comp new, eco-e studio! processes and construc constraints, the original t’s Priorit orary fficient lex desig we minimise in 2011 a new Masterplan was canopy, floor dance plan was shelved. Howeverwere tion nmen Gover spac and where We are atimb eliminate waste. er,and n incor worksafe the CHAS drawn up with architects AHMM and SMAS accredited this schemeLavington. The meta new nurs possible es on Maccreanor redevelopment state of porating e l from challeng contractor, started on site employing andfully polyc the summer trained, of 2013, and Theinfinal CSCS withcame planned completion by June 2014.

KTS offers two outs the art educ ery now only arbonate on or T J Evers a world class, Safety related accredited erectors. ational provides building l contract and Health & manufacturing flexible UK principa an impr ct a new environmide play area The project was facility d privately based ioned by construand the council , time efficient to funded facility worked occupie in partnership s with an with sleep essive commiss need ent effective and and of to ISO 9001, Allfor our timber is imported thethrough the is accredite n School, s was a cost Laing O’Rourke from sources provides middle certified Local Education Partnership its child Solution ISO 14001 d Health in the to provide scheme.

Anglo Europea n Timber and OHSAS area, for quality a safe for ing as sustainable n School One of the ren.

by PEFC (Programme a tight site pment of Using 18001 Kingspa Europea managem andthe ing school. ng redevelo Kingspan the of Anglo ent, The scheme is one function homely managem Endorsement of Forest Certification) or FSC toarose deliverfrom a total of 276 affordable homes struc and of two projectses ent and health environmental on behalf solution to the continui ‘no ’s was pate tural that across the borough. ble challeng and safety.

(Forest Stewardship nted Council) accredited source. insul m block of fire during sustaina & Safety walls We are a CHAS classroo ents e the risk and toilet and roof, ated pane TEK ® prefa one, Essex. existing minimis and SMAS Ingatest the requirem on of an bricated Doug need to worksafe contracto System. rooms, storage accredited an impr ls to cons address ® ng demoliti las Fir T J Evers, ms, seminar impendi ction and truct n TEK Building r, employin essiv with the Glula classroo of trained, CSCS exte constru of Kingspa closely both g only fully m beam e timber rnall As a result ’, a series using the d and and d Working the clad combine Frame Associati UKTFA (UK Timber s propose s - both for purpose mix of y – and expo were created of HSG 168. facilities Solution t longer fit ed on) accredite mate storey block internallyexterior, the new construc n Timber rials has sed meta in a two m block contemp d erectors. which minimis s used to Kingspa All our timber facilities classroo l featu and a solution which were the floor to the old is imported res, g to building achieve industria orary build resulted in adjacent panels (SIPS,) implemented sustainable from fully joists to occurrin an outs the comp ing, blen a car park al insulated PEFC (Program metal web boundary. of damage Built on lex the surro l materials tanding Endorsem the risk ction site deep open cated structur me for the ent of that overding natural unding with 304mm services.

TEK® prefabri of the constru or FSC (Forest Forest Certification) and roof, of finis outside efficient gree ion time walls n spac Stewardship will blen hes and both the from a highly high easy installat accredited es.

Council) will benefit d in and facilitate sources. of TW55

Project

floors

nd Backgrou

20mm orary design, solution panel and contemp building , with its al insulated . building g an ‘off-site’ TEK structur The new y. Providin n to students disruptio with a 142mm n fixed internall minimum envelope insulatio me to ensure ance rigid perform build program a shorter enabled

spans

te

with

The Cha

llenge

The desig utilising n brief was materials,a combinatio very comp not usua n of differ lex, builds. ent lly used Altho ugh in a huge in comm itself issue that was ercial Regulation , ensu ring not products s were met Schools Building was a whilst key prior using the ity.

The proje ct requ appro ired ach to constructa multifacet achie ve ed a preci the six mont ion and in se prog order h ensuring to ramm build timef rame delivery e was put into place, by the end of 2013.

This pro Kingsp ject com bined Solutionan Timber commer s’ experti se in cial build homes and selfutilisin sectors by materiag a mix of differe ls and nt skills.

• Confidence of 50 year track record and highly successful Kingspan group

Kingspan Timber Solutions Limited Eltisley Road, Great Gransden, Bedfordshire SG19 3AR, UK T: +44 (0) 1767 676400 | F: +44 (0) 1767 676444 | E: info@kingspantimbersolutions.com | www.kingspantimbersolutions.co.uk

STRUCTURAL TIMBER MAGAZINE | ISSUE 01 | AUTUMN 2014 CASE STUDY: Self-Build

HIGHFIELD

IMAGE COURTESY OF: FRAME WISE

IMAGE COURTESY OF: FRAME WISE

After investing in a 1930’s bungalow, Richard and Paula Hurd set out to create one of the UK’s most energy efficient and sustainable homes.

loss through the building fabric. The discussion around sustainability once centred on renewable technologies. Now the well-established, Fabric First approach has heightened awareness of the benefits of applying such building principles and

Following extensive research, the environmentally

This ultra-low energy home was based on the

as a result, the market demand for innovative

conscious couple made the decision to appoint

TTJ Innovation Award winning, Wise Wall T (Twin

products which deliver superior thermal and air-

Frame Wise to develop a sustainable timber

Frame) system. Wise Wall T is factory-built to

tightness properties has dramatically increased.

frame home. The ecological impact of the

exacting standards, eliminating the need for any

development was of great importance to the

additional labour on site to complete the wall

It took a total of five weeks for Frame Wise to get

Hurd’s, who had an ambition to create a

structure. It measures only 300mm thick,

the structure up. This was an extremely speedy

sustainable home, without the excessive use of

ensuring that the floor space of the new home

process that was only delayed by the late arrival

bolt-on technologies.

can be maximised and achieves U-values as

of the double glazed windows. The thermal mass

low as 0.09 W/m2K with airtightness measured

performance of Wise Wall T closed panel timber

Plans were passed for a traditional style,

at 0.9 M3 H-1 – eradicating the need for any

frame technology is comparable to the effects

two-storey newbuild home with four bedrooms

additional space heating or cooling systems.

of heavyweight construction, yet clearly brings

and a basement which was to be located on the

many additional benefits synonymous with onsite

site of the old bungalow. By using timber frame

The structure of the Wise Wall T panel incorporates

to its full potential, Frame Wise created a living

‘breathable wall technology’ which negates

space that met with the family’s every need.

any condensation build up within the structure,

The 310 sq m space only took three weeks to

giving the panel heightened performance. The

make watertight from delivery, costing just under

panel features two timber ‘skins’ with a cavity

£50,000 for the timber frame element. The total

between, which allows for unbroken insulation

build cost came to £504,315, including the

and reduced thermal bridging.

demolition of the former bungalow, the

STA MEMBER....................................... Frame Wise CLIENT................................. Richard and Paula Hurd ARCHITECT....................... Phoenix Design Associates SUSTAINABILITY CONSULTANT............. David Strong TECHNOLOGY................... Closed Panel Timber Frame A COMPREHENSIVE EIGHT PAGE CASE STUDY ON THIS PROJECT CAN BE DOWNLOADED FROM: www.structuraltimber.co.uk/members/case-studies

36

construction.

basement and foundations and all elements The Fabric First concept used was founded on

of the construction work and landscaping.

the principle of constructing the most airtight

The property was one of the first timber frame

building envelope possible with minimal

constructions to have a full TSB Building

thermal bridging to significantly reduce heat

Performance Evaluation.

CASE STUDY: FRAMEWISE - HIGHFIELD

STRUCTURAL TIMBER MAGAZINE | ISSUE 01 | AUTUMN 2014

GET TO GRIPS WITH TIMBER FRAME

IMAGE COURTESY OF: STEWERT MILNE

IMAGE COURTESY OF: STEWERT MILNE

Several key members of the STA are opening up their doors for a series of factory visits to reveal the benefits of using timber frame as one of the best ways to meet sustainability targets and develop energy efficient buildings.

RIBA Core Curriculum: • Being safe: health and safety • Climate: sustainable architecture • Designing and building it: design, construction, technology and engineering Knowledge level: General Awareness

Timber frame offers a reduction in raw material

Pick up essential working knowledge on

CPD session type: Factory visit

waste during manufacture, better flexibility

how to build with improved airtightness

Duration: 4 hours

in design and improves the whole-life energy

and superior thermal performance within a

Delegate Cost: FOC

efficiency of residential and commercial

Fabric First ethos including:

Delivery location: STA member’s factory

developments. The RIBA-accredited CPD factory tours will highlight the benefits of choosing

• Health & safety induction

timber as the heart of the design and build

• Benefits of offsite manufacture presentation

process and how precision-engineered offsite

• Office CAD demo - timber frame design

manufacturing, delivers unrivalled low carbon, reliability and cost benefits.

and scheduling • Production information and work orders • Production planning and outputs

RIBA Accredited, the tours are FREE and are

• Factory layout principles

taking place throughout October at locations

• Incoming raw materials

throughout the UK. Each tour runs for half a day

• Procurement principles and sources

and includes complimentary refreshments.

• Cross cutting pre-assembly and setting out • Assembly and labelling

Tours cover the process of timber frame

• Stacking and storage

production and construction from the material

• Finished goods and work in progress

store through to the several mechanical cutting,

• Loading/shipping product

nailing and finishing procedures to the finished

• Quality checks

product. They will also cover how materials are

• Quality management systems

checked and located within the curtilage of the

• Waste and recycling

site and stacking according to a construction

• Operative training and competency

programme, ready for delivery to the clients’ site.

• Fire safety presentation

GET TO GRIPS WITH TIMBER FRAME

REMAINING TOUR DATES THURSDAY 18TH SEPTEMBER Kingspan Timber Solutions Great Gransden, Bedfordshire THURSDAY 25TH SEPTEMBER Stewart Milne Timber Systems Witney, Oxfordshire WEDNESDAY 1ST OCTOBER Scotframe Timber Engineering Inverurie, Aberdeenshire TUESDAY 14TH OCTOBER Frame Wise Presteigne, Powys WEDNESDAY 15TH OCTOBER Pinewood Structures Sandy, Bedfordshire THURSDAY 23RD OCTOBER Oregon Timber Frame Selkirk, Scottish Borders

THE FACTORY TOURS ARE FREE OF CHARGE. PREVIOUS TOURS HAVE BEEN SOLD OUT SO PLEASE BOOK EARLY AT: www.structuraltimber.co.uk/events/ riba-cpd-factory-tours

37

STRUCTURAL TIMBER MAGAZINE | ISSUE 01 | AUTUMN 2014

CPD TRAINING AND LEARNING MODULES The STA offers a number of onsite and online CPD training and learning programmes dealing with Fire Safety, Fabric First efficiency and Building in Structural Timber.

The onsite training sessions are delivered at your place of work to groups (rather than individuals).

WEB-BASED: Innovative online learning tool – Architect’s Challenge

ONSITE SESSION: Fire safety during

ONSITE SESSION: Building low carbon homes:

Developed by Wood Campus, in collaboration

construction (with reference to timber frame)

principles for timber frame fabric efficiency

with the STA and supported by Wood for Good

Timber construction and issues surrounding fire

This seminar will provide support to designers

and Cortexa, the programme is designed to

safety is a common theme. The STA is running a

and builders who are familiar with the Fabric

educate architects, architectural students and

series of CPD seminars dealing with fire safety

Energy Efficiency Standard and now want to

technicians in how to build in structural timber.

during construction (where timber and construction

work up well insulated and airtight timeframe

Unlike other CPD programmes, the Architect’s

sites are at their most vulnerable) to cover:

solutions. This will provide a clear understanding

Challenge is fully interactive, taking participants

of the key issues of thermal performance,

through each RIBA work stage process, to plan

thermal bridging, thermal bypass, airtightness

and design a health centre built in timber.

• A brief history of the solutions to fire safety in timber frame construction • The background to HSG 168, compliance requirements • Present industry guidance and solutions • Plus the biggest sustainable construction agenda

and important influence of sequencing of the construction. Key points addressed: • Understanding of the Fabric Energy Efficiency Standard (FEES) • Encourage Good Practice Construction by collaboration

RIBA Core Curriculum: • Being safe: health and safety statutory frameworks and processes construction, technology and engineering Knowledge level: General Awareness CPD session type: Seminar

is another step on the road to helping the construction industry utilise timber as a primary building material,” says Andrew Carpenter, Chief Executive of the STA said. “As the most

• Enable persons to appreciate the key

sustainable build system available, we forecast

issues in achieving Good Practice

that timber’s share of the market will increase

• Compliance: legal, regulatory and • Designing and building it: design,

“RIBA accreditation of the Architect’s Challenge

dramatically in coming years, so it is vital that RIBA Core Curriculum:

such training tools are in place.

• Compliance: legal, regulatory and statutory frameworks and processes • Designing and building it: design, construction, technology and engineering

“The programme is ideal for helping novices grasp the technical aspects of building in structural timber or to help experienced architects

Duration: 2 hours

Knowledge level: General Awareness

brush up on their skills, with an excellent

Delivery location: Your practice/office

CPD session type: Seminar

library of technical information. The scoring

Duration: 2 hours

system which the programme offers also allows

Delivery location: Your practice/office

colleagues to see how they stack up against each other, which adds a competitive aspect to employees’ continued personal development.”

The Architect’s Challenge joins the video-based introduction to timber in construction – Timber: The Building Material of the Future – which is

FURTHER DETAILS AT: www.woodcampus.co.uk www.structuraltimber.co.uk REQUEST A CPD AT: www.structuraltimber.co.uk/training/riba-cpd-seminars

38

presented by the architect of the world’s tallest residential building, Andrew Waugh.

IMAGE COURTESY OF: TIMBER EXPO

CPD TRAINING AND LEARNING MODULES

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HECO-TOPIX® Flange Head

• European Technical Approval ETA-11/0284 & 12/0132 • CE marked in compliance with forthcoming CPR (Construction Products Regulations) • Screw Characteristic values complies with Eurocode 5 design codes • Lateral & Axial loads comparable with a bolted connection • Manufactured in the Black Forest of Germany • Extensive stock holding in the UK Aptus Fastener Systems Ltd Salterwood Drive, Denby, Derbyshire DE5 8JY Tel: 01773 740410 sales@aptusfasteners.co.uk www.aptusfasteners.co.uk

STRUCTURAL TIMBER MAGAZINE | ISSUE 01 | AUTUMN 2014

ENGINEERING BULLETINS – TIMBER AND ITS ENGINEERING CAPABILITIES The STA encompasses all users of all structural timber systems and its elements and components. It provides business and technical support to the construction industry and provides peer reviewed outputs on subjects related to the timber industry such as health and safety, fabric and technical performance and fire safety.

THE ENGINEERING BULLETINS WILL COVER THE FULL RANGE OF TIMBER AND ENGINEERED TIMBER MATERIALS; COMPOSITE WOOD PRODUCTS AND THE IMPACT ON DIFFERENT TYPES OF TIMBER STRUCTURES IN DETAIL.

A new series of in-depth technical articles are

The Engineering Bulletins will cover the full range

being produced on behalf of the STA that will

of timber and engineered timber materials;

gradually build to form a Timber Engineering

plus composite wood products and the impact

Handbook. Written by chartered structural

on different types of timber structures in detail.

engineers Milner Associates with contributions

As the series develops, it will become an essential

from industry specialists including TRADA, the

source of technical information for anyone

series aims to provide basic technical

interested in and/or working with timber.

information on the use of timber as a structural medium for the practising structural engineer.

They will outline typical objectives behind timber usage and engineering principles and tolerances, highlight energy efficiency and airtightness issues, durability and outline relevant Codes of Practice such as BS EN 338:2009 Structural – strength classes through to guidance on fire safety, species and stability advice. This is all supplemented by illustrations, diagrams, tables and photography.

FOR MORE INFORMATION VISIT: www.structuraltimber.co.uk/technical-library

40

ENGINEERING BULLETINS

STRUCTURAL TIMBER MAGAZINE | ISSUE 01 | AUTUMN 2014

• No. 1

• No. 2

An overview of the history and benefits of timber

ENGINEERED WOOD PRODUCTS AND AN INTRODUCTION TO TIMBER STRUCTURAL SYSTEMS

• No. 3

as a material including basics on strength issues,

This will assess the various engineered wood

The platform frame method of building timber

commercial considerations, prefabrication,

products and systems including glulam, CLT,

frame structures is suited to both low-rise and

moisture and timber size and grading with

LVL, finger joints, plywood, stressed skin panels,

medium-rise buildings. Many buildings up to six

information on species and durability.

mechanically and adhesive bonded web beams,

and seven storeys in height have been

connectors and nail plates, reconstituted timber

constructed over recent years. This will cover

and a summary of engineered wood and board

uses and applications for open panels, closed

products and their structural applications.

panels, floor cassettes, CLT and SIPS.

• No. 4

• No. 5

• No. 6

A continuation bulletin covering advanced

This third bulletin covers Building Regulations

Fire safety is an essential building regulation

engineering principles including detailed analysis

and compliance. It drives deep into issues

design requirement for any completed building.

of wall diaphragms, racking and load transfer,

surrounding the overall robustness of timber

It covers aspects such as fire resistance, means

stability, horizontal diaphragms and bracing with

frame construction with definition of

of escape, fire spread and space separation. This

references and further reading

Consequence Classes and guidance on

bulletin covers science of the development and

multi-storey timber buildings.

behaviour of fire and it’s relationship to timber as

TIMBER AS A STRUCTURAL MATERIAL - AN INTRODUCTION

TIMBER FRAME STRUCTURES – PLATFORM FRAME CONSTRUCTION (PART 2)

TIMBER FRAME STRUCTURES – PLATFORM FRAME CONSTRUCTION (PART 3)

TIMBER FRAME STRUCTURES – PLATFORM FRAME CONSTRUCTION (PART 1)

TIMBER FRAME STRUCTURES – SEPARATING DISTANCES DURING CONSTRUCTION FOR FIRE SAFETY

a material; impact on timber length, number of storeys and the causes and spread of fire.

• No. 7

FIRE SAFETY IN TIMBER BUILDINGS

• No. 8

• No. 9

is called ‘passive protection’ – fire resistant

GLUED LAMINATED TIMBER STRUCTURES (PART 1)

lining boards and/or ‘active protection – smoke

This introduces the engineering principles of

GLUED LAMINATED TIMBER STRUCTURES. (PART 2: CONSTRUCTION AND CONNECTION DETAILS)

ventilation, alarm systems and sprinklers. This

some common frame types and describes, in

Proper connection details are important for the

bulletin explains timber’s fire resistance and

more detail, the glulam material and specification.

structural performance and serviceability of any

reactions for the Building Regulations, plus fire

It provides a review of glulam in two of the most

timber structure. This will cover structural

safety design considerations for the engineer.

common structural forms: ‘post and beam’ and

detailing and control of connections with

two dimensional rigid frames and information on

examples of connection design, effects of

internal and external exposure of glulam beams.

moisture accumulation and portal haunch

Structural fire safety is achieved either by what

connections.

ENGINEERING BULLETINS

41

STRUCTURAL TIMBER MAGAZINE | ISSUE 01 | AUTUMN 2014

SOCIAL HUB/VIDEO VAULT – IT’S ALL ABOUT INTERACTION With Social Media playing a vital role in today’s construction industry, the STA has developed a dedicated Social Media/Multi‐media platform to be embedded within the STA website!

The STA Social Hub will act as a signposting

A Pinterest facility is integrated to maximise

tool to all of the social media activities carried

imagery of structural timber usage and blogger

out by the Association and its members. It will

activity includes experts in timber technology

also contain a live Newsfeed and host Social

giving technical advice and opinions on current

Media/Linked-In/Twitter/Blog/Pinterest/Tumblr

topics of interest.

functionality - acting as a repository for all the latest up to date developments in the structural

Another interesting development is our Structural

timber sector.

Timber Video Vault, which includes the new Structural Timber Technology video to clearly

The average amount of time spent on social

articulate the rationale for choosing structural

networking sites increased 82 per cent last year.

timber versus other material options. STA

It is clearly becoming a new force across

members will upload their video footage to the

organisations in this sector, allowing STA

Vault so that visitors to the site can see the full

members to reach out to their potential customer

process from design through to manufacturing

base on a new platform. The aspiration is for

process and installing onsite.

this Hub to be used by all members and provide a central location for architects, self-builders,

Accessed via the recently upgraded STA website,

contractors and other industry professionals to

both the Social Hub and Video Vault provide an

keep a keen eye on news, projects, products and

effective and efficient way of users finding

service innovations and to engage directly with

information and opinion without the need of

our industry.

trawling the Internet.

42

ONLINE TOOLKIT DEVELOPMENT

TEXT THE AVERAGE AMOUNT OF TIME SPENT ON SOCIAL NETWORKING SITES INCREASED 82 PERCENT LAST YEAR. IT IS CLEARLY BECOMING A NEW FORCE ACROSS ORGANISATIONS IN THIS SECTOR, ALLOWING STA MEMBERS TO REACH OUT TO THEIR POTENTIAL CUSTOMER BASE ON A NEW PLATFORM.

SmartPly FR/FR Build

Added to the heart of the product‌ ‌not just an outer coating Flame Retardant OSB3: Protection when you need it.

For more information visit frosb.com or call 01322 424900

PERFO REFLEX is a BBA certified vapour permeable foil membrane designed to increase the thermal performance of timber stud walls without increasing thickness. Available with single or double face foil coating.

Any mineral wool can be used within the Timber Frame (K- Value 0.044) thus making the overall construction extremely cost effective.

U-Values to meet 2006, 2010 & 2013 Regulations for England, Wales & Scotland.

Reduces construction thickness.

Alternative Alreflex Platinum detail includes integral bubble foil vapour barrier and 25mm service void behind plasterboard.

Equivalent to adding 40mm Mineral Wool insulation to the outside of the frame.

ODP and GWP- zero.

T: F: E: W:

01582 450814 01582 429305 info@thermal-economics.co.uk www.thermal-economics.co.uk

For help choosing the right product please call Thermal Economics Technical Department on 01582 544255 For all our Acoustic & Thermal insulation products visit: www.thermal-economics.co.uk

STRUCTURAL TIMBER MAGAZINE | ISSUE 01 | AUTUMN 2014

TECHNICAL LIBRARY Engineering and Technical Bulletins

STA INFORMATION CENTRE The STA is the authoritative voice of the structural timber industry in the UK. The Association is committed to stringent standards of quality and service and sets a professional benchmark for the industry.

TRADA Technology has been commissioned to develop a series of Engineering and Technical Bulletins which are intended to provide introductory information on using SIPS for construction.

Advice Notes Our Technical Committee is working hard to bring you a series of advice notes on Timber Frame, Solid Wood and SIPS including CE Marking.

Site Safe Site Safe has been developed by the STA to ensure its members work closely with principal contractors/clients to give clear concise information and assistance to the principal contractor regarding fire safety on construction sites.

Part of the constantly updated STA website is

DOWNLOADS

the easy to use Information Centre, where you

General Information

Structural Documents

can find a wide range of material dedicated to

Includes information on insurance, financial

& Construction Documents

bringing about a better understanding of what

elements, market updates, technology and skills.

Includes information on propping, bracing, cavity

timber can do and why it is at the heart of the sustainable building agenda.

barriers, perimeter fencing and wireless fire Education & Training

alarms.

Includes CPD presentations on low carbon The STA produces a range of Advice Notes,

homes and factory tour presentations.

Information Papers, Construction Details and

Design Documents Includes information on cavity barriers,

Engineering and Technical Bulletins covering

Health & Safety

separating distance, differential movement

all aspects of structural timber design and

Includes information on code of practice and

and much more.

application.

competency award schemes.

The Information Centre is intended to be

STA Membership

Timber Frame Construction -

informative and keep visitors posted with the

Includes information on the Association and

A Useful Pocket Site Guide

latest developments and techniques in our

becoming a member plus the STA Vision

This pocket guide presents best practice site

industry. Much of the information is free to

and Values.

checks to deliver good build quality for low rise

STA SHOP

access and can be simply downloaded once

domestic timber frame buildings. This guide

you have entered your details. Some of the

Self-Build Help & Information

is of use to: Project Managers, Timber Frame

information is for member only access.

Includes market reports, top building tips and

Erectors, Site Managers, Site Inspectors, and

insurance information and why building with

Trade Trainers.

timber frame is so straightforward.

IF YOU WOULD LIKE TO JOIN THE STRUCTURAL TIMBER ASSOCIATION OR HAVE ANY CONSTRUCTIVE COMMENTS TO HELP TO MAKE IMPROVEMENTS TO THE INFORMATION WE PROVIDE THEN PLEASE EMAIL: enquiries@structuraltimber.co.uk

44

Site Safe Posters Newsletters

For members only - these posters are for display

Includes information on Fabric First.

on site during construction.

INFORMATION CENTRE

STRUCTURAL TIMBER MAGAZINE | ISSUE 01 | AUTUMN 2014

DEDICATED QUALIFICATIONS FOR ENGINEERED WOOD

IMAGE COURTESY OF: XXXXX

Craftsmen and women in the wood industry have access to over 40 nationally recognised and funded wood-related qualifications, whilst the engineered wood industry has none. Paul Preston from awarding body PIABC believes the timber industry needs to take up the challenge…

Until recently, engineered wood

Does the engineered wood industry want to

The awarding organisation for the wood

manufacturers have missed out on

take advantage of a similar structure and the

industry – PIABC - can help. Other industry

professional recognition and national

extended benefits?

specific qualifications are available including:

qualifications. Surely the engineered wood

Wood Machining, Wood Product Manufacture,

industry should equal other sectors in

There are now national accredited Engineered

Kitchen Design, Furniture Making, Solid Surface

offering professional careers with interest,

Wood NVQ qualifications at Levels 2 and 3

Fabrication and Installation, Merchant Supplies

excitement, rewards and opportunities for

developed by the Skills Council, employers and

and Saw Doctoring.

personal development?

qualification bodies for specific use by the industry – for existing staff and for apprentices. The

Proud carpenters for example value their

qualifications are accredited by PIABC which is

nationally recognised qualifications and the

accredited by government regulators Ofqual and

industry benefits from a qualification system that

SQA – ensuring national consistency and quality.

drives up professional standards and attracts young talent and public funding.

But this initiative now relies on employer support.

If employers want to see improved quality,

Careers officers and parents recommend these

productivity, efficiency, retention, self esteem,

industries; career paths are visible, and career

professionalism, public image and attract new

opportunities open up along the way.

talent into the industry they need to support the work done to date by qualifying staff or

Employers, employees and the industry benefits

taking an apprentice. Parity with our partners

– Skills Councils become committed and add

in the construction and furniture industries is

value – the demographics are monitored for the

now a possibility; however it really does require

long term health of the industry and interven-

employers to respond.

tions put in place.

ABOUT PIABC PIABC is a specialist awarding organisation, with a suite of accredited and national recognised qualifications in packaging; kitchen design; furniture; and wood and timber. PIABC is part of the Institute of Materials, Minerals & Mining (IOM3). Paul Preston was the Sector Skills Council development officer for wood industry qualifications and is now the PIABC awarding body officer.

FOR MORE INFORMATION EMAIL: paul.preston@iom3.org

DEDICATED QUALIFICATIONS FOR ENGINEERED WOOD

45

STRUCTURAL TIMBER MAGAZINE | ISSUE 01 | AUTUMN 2014

BIM4 HOUSING

Membership of BIM4Housing is reflective of the sector, involving clients, contractors, consultants, suppliers and sub-contractors. It also consists of members from across the housing sector and

BIM4Housing is a cross-industry group open to all organisations involved in the design, construction, management and delivery of housing. Andrew Carpenter, Chair of BIM4Housing outlines what it hopes to achieve.

we are keen to attract participation from key players such as RSLs, private house builders and members from throughout the supply chain.

What do we hope to achieve?

• To identify areas where there are unresolved development issues for BIM in the housing industry and help resolve those issues swiftly • To liaise with BIM4Housing organisations in other countries to swap best practice and ensure international standardisation is possible • To liaise with BIM4 organisations in other sectors where integration or information standardisation is required (e.g. BIM4FM, BIM4Manufacturing) either directly or through the broader BIM4Communities group • Build an evidence base (including real life examples and case studies) and make it accessible to members

IMAGE COURTESY OF: TEKLA

• To spread knowledge and awareness of BIM standards, information and best practice across the homebuilding industry

BIMS ROLE IN BRINGING PROJECT DESIGN AND DELIVERY TEAMS TOGETHER ENABLES A BUILDING TO BE VIEWED, MEASURED AND FINE-TUNED IN A STRUCTURED WAY BEFORE ANY REAL SITE WORK HAS BEGUN.

BIM4Housing aims to introduce those

through events and training sessions.

involved in the housing sector to the benefits and opportunities available by using BIM. BIM is

This group represents a really exciting opportunity

the vehicle we have been striving for to deliver

for all those involved in housing, both private and

necessary industry culture change.

public sector, to embrace the culture change required to adopt BIM and the business benefits

BIM4Housing will operate under Constructing

that will flow from it. The housing sector was late

Excellence and represent the whole supply

to adopt BIM but we are determined to ensure

chain. We want to introduce group members to

we not only catch up with the rest of the UK

the advantages that BIM may bring – including

construction industry, but overtake and become

efficiencies, clash detection and risk management

leaders in its adoption. The key to our success

– while emphasising the need to work within a

will be a truly collaborative culture and the total

collaborative culture and with a totally integrated

integration of the supply chain. Only then will

supply chain from inception to operation.

the benefits flow.

BIM4HOUSING REGIONAL CONFERENCE

46

BIM4HOUSING

at Visit us 4 xpo 201 E r e b m i T

71

Stand B

BIM COMPLIANT TIMBER FRAME Artist impression copyright of University of Exeter

Model BIM Compliant Timber Frame in Tekla Structures - Collaboration is key within building information modelling, and Tekla Structures has been at the forefront of parametric structural modelling for over 20 years. Timber frame, structural steel and concrete can all be modelled to fabrication levels of detail. Tekla Structures provides NC data for automated production, exports and imports from all major CAD and BIM authoring software. Create bills of material and mandated IFC format export for model collaboration tools such as Tekla BIMsight.

For further information on Tekla Structures or to organise a demonstration of the software, please call 0113 307 1200 or come along and visit us at Timber Expo 2014, stand B71.

a www.tekla.com/uk

STRUCTURAL TIMBER MAGAZINE | ISSUE 01 | AUTUMN 2014

The reality is BIM has the potential for your company to unlock more efficient ways of collaborative working and will offer better value to your customers (both public and private). You cannot buy BIM in a box, and you may need to make a technology investment, but BIM is much more than technology it is a new way of working. You will need to invest more in doing than buying.

CONCENTRATE ON YOUR PEOPLE AND PROCESS. UNDERSTAND YOUR ROLE IN THE PROCESS – IRRESPECTIVE OF WHAT YOUR BUSINESS DOES YOU WILL BE SUPPLYING AND MANAGING INFORMATION SO GET TO KNOW THE KEY REFERENCE POINTS: COBIE UK 2012, PAS1192-2:2012

IMAGE COURTESY OF: X-LAM ALLIANCE

Avoiding the BIM-wash • 15th October – Leeds

The Building Information Modelling (BIM) Task

• 16th October – Bristol

Group is supporting and helping to deliver the

• 23rd October – St. Albans

objectives of the Government Construction

• 29th October – Edinburgh

Strategy with advice and guidance.

• 30th October – Birmingham The Government Construction Strategy (GCS) The BIM4Housing website provides

requires fully collaborative 3D BIM (with all

a contact point and information for

project and asset information, documentation

members as well as a platform for its

and data being electronic) as a minimum by

activities.

2016. This refers to all centrally procured Government projects as outlined in the GCS,

It is available via:

IMAGE COURTESY OF: SIMONS CONSTRUCTION

including newbuild and retained estate.

www.constructingexcellencesw.org.uk The Government Construction Strategy and it’s

BIM4HOUSING AT TIMBER EXPO:

If you are a member of a company within

BIM intervention is far reaching (there is no

A BIM4HOUSING Seminar will be taking place at

the housing sector you are encouraged

minimum value (£) on a BIM enabled project).

Timber Expo on: Wednesday 08 October

to join the group to enjoy all the benefits

You may be involved either directly, through

membership will bring.

engaging with a Government Department, or

THIS IS A FREE EVENT AND IS OPEN TO ALL

indirectly, with a supply chain partner who needs

VISITORS. TO REGISTER AS A VISITOR GO TO:

data as part of their contractual requirements.

www.timber-expo.co.uk/book

No matter what your role in the built environment it is highly likely that your business will be involved in the BIM process either FOR MORE INFORMATION CONTACT THE BIM TASK GROUP: www.bimtaskgroup.org/contact/

supplying or managing data.

OR DIRECT MESSAGE VIA TWITTER: @BIMgcs

48

BIM4HOUSING

STRUCTURAL TIMBER MAGAZINE | ISSUE 01 | AUTUMN 2014

PROJECT PROFILES A constantly evolving part of the STA website is the Project Profile section.

If you have a project that you would like to share with the world and want to submit it to the STA for inclusion visit: www.structuraltimber.co.uk/members/project-profiles where there is a self-submission

THIS HAS BEEN CREATED SO THAT STA MEMBERS CAN SHARE THEIR SUCCESSES AND PROVIDE BRIEF OVERVIEWS OF PROJECTS WHERE STRUCTURAL TIMBER APPLICATIONS HAVE BEEN USED. THESE GIVE A FLAVOUR OF WHAT WAS INVOLVED IN THE PROJECT AND THE TIMBER ELEMENTS EMPLOYED. SECTORS INCLUDE: RESIDENTIAL, SELF-BUILD, COMMERCIAL, EDUCATION AND HEALTH.

form or get in touch with the STA team.

Here are a few selected profiles to whet your appetite…

KEVIN MCCLOUD’S HABOAKUS STROUD SCHEME USES PRESTOPLAN FABRIC ADVANTAGE

YOUNGS HOMES, SNETTISHAM

CHAMBERLAIN ROAD

ITW Industry

Stewart Milne Timber Systems

Rob Roy Homes (Crieff) Ltd

Prestoplan has been appointed by Glouces-

Stewart Milne Timber Systems’ innovative

A pair of semi-detached houses in Central

ter-based Markey Construction to supply the

newbuild system, Sigma II, a Fabric First solution

Edinburgh with an area of 472m2. The house

timber frame for 78 new homes on the former

to create mass market Code Level Four homes,

is a newbuild with a timber frame, finished

Cashes Green hospital site in Stroud. The

has been used to complete a development in

externally with stone, and sash and case

development, which is called ‘Applewood’ is

Snettisham, Norfolk. The project consisted of 15

windows to give a traditional appearance. The

a Haboakus scheme which is a joint venture

units of two-storey houses for Youngs Homes

house was designed by McLaren Murdoch

between Kevin McCloud’s company Hab and

on behalf of Flagship Housing Developments.

and Hamilton Architects for S1 Developments,

housing group GreenSquare. Haboakus

The aim was to achieve first-class energy saving

and the timber frame has supplied by Rob Roy

champions sustainable living and builds homes

insulation and airtightness, as well as

Homes (Crieff) Ltd.

that are environmentally efficient to construct

cost-efficiencies in terms of offsite prefabrication.

against the broader context of designing places

The solution they were looking for also had to be

and homes that respect local context

sufficiently adaptable to suit a variety of external

and biodiversity.

finishes, window detailing and integration of services.

PROJECT PROFILES

49

STRUCTURAL TIMBER MAGAZINE | ISSUE 01 | AUTUMN 2014

OAK MEADOW, WOLVERHAMPTON

MIXED USE SCHEME BENEFITS FROM URBAN ADVANTAGE

THE BOATHOUSES, LOCH TAY

Cygnum Timber Frame Ltd

ITW Industry

Rob Roy Homes (Crieff) Ltd

Oakmeadow Primary School, was the first school

Prestoplan

This was a self-build project to create holiday

in the UK to receive Passivhaus certification in

has been appointed by Pochin Construction to

accommodation finished to a very high standard.

February 2012. Designed and built to the

supply the timber frame structure for 30

Rob Roy Homes (Crieff) Ltd supplied the timber

rigorous Passivhaus standard, the two from entry

apartments which form the first phase of a mixed

frame which is positioned on galvanised steel

primary school (420 children) was completed

use scheme at Buckshaw Village, Chorley in

posts and beams. Supply included the windows,

to an overall construction cost: £1,754/sqm.

Lancashire. The Henry Davidson Developments

external doors, external timber boarding,

Cygnum package for the timber frame element

scheme is a phased build, which, when

decking, plasterboard, insulation, internal

of the project included the Design, Supply

complete, will include a 35,000 sqft Tesco,

doorsets, skirtings and facings. Due to access

& Installation of the timber frame structure,

22,000 sqft of mixed retail, and leisure and 72

restrictions to the site, the roof was constructed

comprising glulam beam and post, insulated wall

residential apartments.

of completely loose timbers. The architect for

and roof panels including the airtightness layers

this project was Colin A Smith Architect (CASA).

and the intermediate floor cassettes. The site installation was completed by Cygnum’s directly employed site operatives.

DUNFIELDS

THE GREEN, BRADFORD UNIVERSITY

Oakworth Homes Limited

Stewart Milne Timber Systems

Oakworth Homes Ltd has been appointed by

Designed by GWP Architecture and delivered

Coda Studios to manufacture, supply and erect

on behalf of Mi7 Developments and Welbeck

the timber frames of an exciting new development

Land, The Green is the first phase of a larger

in Sheffield. The development consists of eighteen

£100m Listerhills Triangle development in

four and five bedroom houses, each designed

Bradford’s Learning Quarter, which will also

with terraces and roof gardens. Dunfields will

include academic and healthcare facilities in a

be an eco-friendly complex achieving Code Level

bid to revitalise the campus and surrounding

6 of the Code for Sustainable Homes and it is

region. The Green provides quality living space

anticipated that this will reduce the energy bills

and is equipped to educate generations of young

for the development, further enhancing

people about the benefits of sustainable living.

rental income.

50

SELECTED PROJECT PROFILES

DUNFIELDS

THE GREEN

RELAX

It’s a Posi-Joist floor!

Posi-Joist is still the most popular open web system offering the simple solution to the needs of the modern home.

From conventional plumbing and electrical services to accommodating the increasing need for Mechanical Ventilation & Heat Recovery systems, Posi-Joist is the most cost effective answer.

The benefits of using Posi-Joist • Open web design provides easy access for the design and installation of services • Improved quality of service fitting, eliminating costly remedial work • Engineered and manufactured to consistent standards of quality and reliability • Greater clear spans for design flexibility • Lightweight, strong and stable, making installation easy and fast • Clear profit from savings in labour, time, materials and call-backs • Standard depths of 202, 225, 253, 304, 373 and 421mm • The largest network of licensed manufacturers throughout the UK and Ireland

The alternative Joist system

MiTek House, Grazebrook Industrial Park, Peartree Lane, Dudley, DY2 0XW, UK Telephone: 01384 451400 www.mitek.co.uk

CPD Now available for Posi-Joist.

Contact MiTek today or visit www.posi-joist.co.uk for full details and an on-line presentation.

STRUCTURAL TIMBER MAGAZINE | ISSUE 01 | AUTUMN 2014

INDUSTRY NEWS HOUSEBUILDING STARTS REACH SIX YEAR HIGH Figures released in August from the Department

side policies have stimulated demand, they have

for Communities and Local Government (DCLG)

failed to take into account supply side issues.

OFFSITE CONSTRUCTION CRUCIAL TO AFFORDABLE HOUSING YEAR HIGH

show housebuilding starts in the year to June reached 133,930 in England, their highest

Ben de Waal, Head of Residential at AECOM,

in over six years, and a 30% increase on the

added: “New methods of building will be

103,530 started in the previous 12 months.

essential in both speeding up, but also ensuring the quality of new development. Pre-fabricated

But while showing the improving conditions for

construction techniques are now unrecognisable

housing development, they still fall well below

to those seen in the 1960’s and can help

Offsite construction will be critical to speeding

the pre-recession peak of 170,440 – and the

diversify away from an over reliance on traditional

up the delivery of new affordable housing for

221,000 new homes estimated to be needed

supply chains. These more advanced methods

councils and housing associations, according

each year (ONS). 80% of construction starts

can offer significant programme and cost

to Alex Goodfellow of Stewart Milner Timber

came from the private sector, again the highest

benefits as well as ensuring high quality.”

Systems.

economy, housebuilding conditions remain

The full tables released from the

The Government’s Affordable Housing

difficult – with a high land prices, high

DCLG can be found here:

Programme 2015-18 encourages increased

construction costs and limited development

www.gov.uk/government/statistical-

partnership between local authorities, housing

finance all impacting on the financial viability of

data-sets/live-tables-on-house-building

associations and private contractors, saying

amount since 2007/08. Despite the improving

schemes. While help to buy and other demand

offsite construction and other forms of ‘construction innovation’ will be key to speeding up building, reducing waste and delivering better

CLT DUO SET FOR LONDON SKYLINE

value for money.

While Banyan Wharf, a ten-storey building

But Alex Goodfellow, group managing director at

located in Shoreditch will be Europe’s tallest CLT

Stewart Milner Timber Systems, believes

structure once completed in April 2015. Mark

providers and builders need to go a step further

Bryan, Regal Homes Production Director said:

and put greater focus on the lifecycle cost-

“Both of these buildings will represent two

benefits of offsite construction, arguing that it

significant structures for London, using

could save money in both the short and

construction methods that are not yet commonly

long term.

used. As a mid-sized developer, these developments represent a significant

He also backed a Fabric First approach that

undertaking and I am proud that Regal Homes

will ensure energy efficiency is built into a new

is leading the way in using this carbon

home, rather than trying to add bolt-on

reducing technology.”

A new development from Regal Homes in

technologies at a later date. “Items such as timber systems and bathroom pods can be

Hackney, will hold the title of Europe’s largest

Source:

manufactured offsite, which means more efficient

cross laminated timber (CLT) structure. The

www.cityam.com/1403279082/wood-you-

builds with lower ongoing costs. This would

cutting edge development will consist of 121

buy-home-meet-londons-new-timber-homes

allow affordable housing providers to develop

private rental units, which will remain in Regal

future-proof, sustainable housing stock quickly

Homes’ rental portfolio.

and cost effectively,” said Goodfellow.

52

INDUSTRY NEWS

STRUCTURAL TIMBER MAGAZINE | ISSUE 01 | AUTUMN 2014

BSW TIMBER WELCOMES TREASURY CHIEF SECRETARY TO SAWMILL “Homes which are intrinsically energy efficient – because they’ve been built with efficiency

Danny Alexander MP, Chief Secretary to the

Welcoming Alexander to Boat of Garten, Martin

in mind - result in fewer repair bills and lower

Treasury, recently visited BSW Timber’s Boat of

Gale said: “We are pleased to capture the

energy costs. Offsite construction also means

Garten sawmill to mark the Government’s growing

attention of a senior government minister. His

the build process is a great deal quicker, so

confidence in the UK’s manufacturing sector.

visit gave us the opportunity to reinforce the

getting tenants in and rent payments established

Danny Alexander, who is constituency MP for

importance of the government sticking to its

happens faster. Energy efficient homes are also

Inverness, Nairn, Badenoch and Strathspey, was

resolve in driving forward its economic recovery

unlikely to need expensive retrofits or alterations

welcomed by BSW Chairman Martin Gale and

plan, as well as recognising the heightened

as they age, which is a significant benefit for

Mill Manager Dave Mills, and used the

focus on rebuilding the UK’s manufacturing

affordable housing providers.”

opportunity to highlight UK Government

sector. Both issues will give the BSW board

commitment to manufacturing in the light of

future confidence to continue our ongoing

newly published gross domestic product figures.

investment. We also had constructive dialogue

The UK is currently facing a significant housing shortfall, with research from Savills showing the

around our support for the Grown in Britain

South of England alone is forecast to need at

BSW Timber is currently investing £70m as

initiative which highlights the huge potential of

least 160,000 new homes over the next

part of a five-year investment plan to bring

forestry products manufactured in the UK, using

five years.

cutting-edge technology to all of its mills, as well

trees grown in the UK.”

as creating modern manufacturing sites and Source: www.stewartmilnehomes.com

improved customer services across the UK.

Source: www.bsw.co.uk

SUSTAINABLE FUTURE FOR GLASGOW 2014 GAMES VILLAGE A selection of detached, semi-detached, terraced houses and apartments will be available, all built to a high standard using sustainable materials. The mix of private and social housing will be extremely energy efficient and set around extensive landscaped areas. A combined heat and power (CHP) plant will ensure that heating bills are considerably lower than comparablesized houses. Each property will be fitted with a meter rather than an individual boiler so IMAGE COURTESY OF: CCG OSM

IMAGE COURTESY OF: CCG OSM

residents will only pay for the energy they use instead of receiving estimated bills.

Now the 2014 Commonwealth Games are over,

onsite and this has contributed to the site’s

The flexible design of the accommodation allows

the focus is on making the state-of-the-art

BREEAM Excellent rating achieved at the design

for a relatively simple post-Games retrofit.

Athletes’ Village located in Dalmarnock into a

stage. Glasgow City Council in conjunction with

Additional facilities including a 120-bed care

new low carbon, sustainable community.

private sector consortium City Legacy, plans

home for the elderly, transport connections and

The 35-hectare site designed by RMJM

to bring further social and economic value to

pedestrian routes will be constructed as part of

Architects features a wide range of homes and

the regeneration area by creating a sustainable

the project.

apartments. Approximately 10% of the village’s

community comprising over 1,400 affordable

energy is generated by renewable energy sources

new homes.

Source: www.citylegacy.co.uk

INDUSTRY NEWS

53

STRUCTURAL TIMBER MAGAZINE | ISSUE 01 | AUTUMN 2014

INDUSTRY NEWS WOOD AWARDS 2014 SHORTLIST ANNOUNCED

FRAME WISE MD JOINS LEADING SELF BUILD ASSOCIATION

commercial and public buildings. The Building shortlist includes projects as diverse in size and

Simon Orrells, Managing Director of Frame Wise

scope as the new Middle Drawbridge at the

has been appointed to The National Custom &

Tower of London by GMT Timber Frame using

Self Build Association (NaCSBA) committee. The

green and air-dried oak; the Sam Wanamaker

NaCSBA was set up to promote self and custom-

Playhouse - the new indoor Jacobean theatre at

build as a form of housing delivery that can make

Shakespeare’s Globe in London by McCurdy &

a significant contribution to homebuilding in the UK.

Co using English and European oak, European redwood, whitewood and spruce; and Hugh

Simon is the longest serving board member of

Strange’s Architecture Archive in Somerset

the Structural Timber Association and currently

using Stora Enso/Eurban spruce cross laminated

Chairs the Self Build Committee and the Timber

timber (CLT) with locally sourced cedar,

Frame Forum. During his tenure as Chairman,

ash and beech.

the STA delivered some of the most critical outputs to guide the construction industry

The winners of the Wood Awards categories and

towards a greater adoption of timber frame as

the recipient of the Wood Awards Arnold Laver

the most sustainable form of construction.

Gold Award for the ‘winner of winners’ will be A shortlist of 30 projects has been selected

announced on the 18th November at a reception

Working closely with the Government, the

from another record entry of over 300 British

in London hosted by the Worshipful Company

NaCSBA published a detailed Action Plan to

architecture and furniture projects in the national

of Carpenters, and the Wood Awards 2014

promote the growth of the UK self-build industry

Wood Awards 2014, co-sponsored by TRADA.

supplement will be published in RIBA Journal’s

and also posted a report looking at how self-

The Wood Awards is the flagship for wood in

December issue.

build works in a number of overseas countries.

As a result, the Government’s Housing Strategy,

the best of British architecture, furniture and design. This year’s 30-strong shortlist features

Source: www.woodawards.com

published in November 2011, has, for the first

unique private houses, stunning small projects,

Congratulations to STA Members B&K Structures,

time, endorsed and promoted self-building as a

outstanding restorations and impressive

KLH and Metsa Wood for making the shortlist.

means of delivering volume housing.

PERSIMMON PROFITS UP DUE TO TIMBER FRAME Persimmon’s timber frame manufacturing

site activities supporting the delivery of

running 9% ahead of the same period last year.

business Space4 increased output by 37% in

our build programmes.”

These results demonstrate the ability of the

the half year to 30 June, as the housebuilder

group to successfully execute its operational

reported bumper results. Persimmon saw

Space4’s output of insulated panel frames

objectives to deliver the ten year strategic plan

revenue increase 33 per cent to £1.2bn in its

increased to construct 2,483 new homes in the

launched in 2012. We remain confident of

half years for the six months to 30 June, while

first half of the year, a 37 per cent increase over

Persimmon’s continued successful

underlying pre-tax profits grew by 57 per cent

the first half of 2013. Jeff Fairburn, group chief

development.”

to £212.9m. Persimmon said its: “swift and

executive, said: “As we have entered the

significant increase in production” had been

traditionally slower summer trading weeks,

Source: www.cnplus.co.uk/8668538.

supported by Space4, allowing the housebuilder

we have been encouraged by our private sale

article?WT.tsrc=email&WT.mc_id=

to “secure greater efficiencies in resourcing and

reservation rate since 1 July which is currently

Newsletter16#.U_O0bvldXqU

54

INDUSTRY NEWS

How many more reasons do you need?

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Or call: 01344 381 378

STRUCTURAL TIMBER MAGAZINE | ISSUE 01 | AUTUMN 2014

The STA represents the vast majority of the timber construction industry including suppliers, manufacturers, erectors and designers. The Association is growing year on year with more and more companies realising the power of being part of a leading organisation that represents the future of sustainable construction.

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Additions Adept Consulting (UK)

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AGB Carpentry

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AJC Carpentry Southern

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Arc Building Solutions

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ARV Solutions

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ASP Carpentry Solutions

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ATM UK Construction

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B & K Structures

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Barnard and Butler Carpentry Contractors

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BASF

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BASF Polyurethanes UK

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Bea Fastening Systems

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Beechrow Homes

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Bensberg Woodwork

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BM TRADA

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Bracewell Stirling Consulting

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Brian Black Joinery & Construction

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Brinds Timber Frame

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British Gypsum

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Broadview Timberframe Extensions

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BSW Timber

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Build It Green

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C & L Timber Kits

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Cameron & Ross

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Carrick Housing

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Cartwright Pickard Architects

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Castleoak Timber Frame

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CCG (OSM)

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Cellecta

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Certification and Timber Grading

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Chichester College

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City Building (Glasgow) LLP

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CLB Joiners

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Coleg Sir Gar

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Construction Skills

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STA MEMBER DIRECTORY

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WOOD PROTECTION

WINDOWS & DOORS

TIMBER FRAME

SOFTWARE PROVIDER

MACHINERY

INSULATION

HYBRID

FLOOR CASSETTES

FLOOR SYSTEMS

FIXINGS & FASTENINGS

FIRE PROTECTION

CONDENSATION CONTROL

CLT & GLULAM

CLADDING SOLUTIONS

BUILDING BOARDS

ASSOCIATED PRODUCTS & SERVICES

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Aptus Fastener Systems

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Apollo Insulation

Cogent Consulting

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Allison Pike Partnership

Charlie Laing Project Management

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Allan Corfield Architects

BMES Engineering Services

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Alexanders' Timber Design

Blue Dice Solutions

TECHNOLOGY TYPES

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AXA Matrix Risk Consultants

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Advantage Timber Systems

AMW Health & Safety

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Advanced TimberCraft

Alfor Fire Safety Services

MANUFACTURERS

TRAINING PROVIDERS

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SIPS

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Actis Insulation

ROOF SYSTEMS

A Proctor Group

TIMBER MERCHANT

SUPPLIERS

QUANTITY SURVEYORS

PROCESSORS

INSURERS & LENDERS

HOUSING ASSOCIATIONS

HOUSEBUILDERS/DEVELOPERS

ERECTORS & INSTALLERS

CLIENTS & CONTRACTORS

CERTIFICATION

ASSOCIATIONS

ARCHITECTS, DESIGNERS & ENGINEERS

ADVISORS & CONSULTANTS

COMPANY

BUSINESS TYPES

Use the grid below to search for STA members, either by business type or technology type:

Consultec UK Crest Nicholson Cubby Construction

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Cygnum Timber Frame D&J Carpentry

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David Ball Construction DBM Consultants

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Deeside Timberframe Dickie&Moore

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Door Kits

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Duncryne

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Dupont Tyvek

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Dupre Minerals

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Easi-Edge

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EBS ELK

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ECODAM

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Ecoframes

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Egan Consulting

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Elite Carpentry

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ER Constructions

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ETF (Northern)

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Fleming Buildings

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Flight Timber Products

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Forest Hill Design

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Frame Wise

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Frame-Tech Structures

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Euler Hermes UK

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Falcon Panel Products

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Fermacell

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Fine Carpentry

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Future-Tech Developments

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G&A Carpenters

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Galloway Fire Safety Services Gary Gabriel Associates

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GNC Engineering

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Griffen Design

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Guildway

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Hemsec Installations

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HEMSEC SIPS

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Hendre

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Hilti

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Homag UK

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Howarth Windows & Doors

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HSB Engineering Insurance

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HSE

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Hundegger UK

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Huntsman (Belgium) BVBA

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Ideal Lifts

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Innovare Systems & I.S.Manufacturing

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Glulam Solutions

HTA Architects

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Glidevale

Hebridean Contemporary Homes

WOOD PROTECTION

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Crocodile Timber Frame

FARMSS

WINDOWS & DOORS

TIMBER FRAME

SOFTWARE PROVIDER

SIPS

ROOF SYSTEMS

MACHINERY

INSULATION

HYBRID

FLOOR CASSETTES

FLOOR SYSTEMS

FIXINGS & FASTENINGS

FIRE PROTECTION

CONDENSATION CONTROL

CLT & GLULAM

CLADDING SOLUTIONS

BUILDING BOARDS

ASSOCIATED PRODUCTS & SERVICES

TECHNOLOGY TYPES

MANUFACTURERS

TRAINING PROVIDERS

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Cox Long

Envirograf Intumescent Systems

TIMBER MERCHANT

SUPPLIERS

QUANTITY SURVEYORS

PROCESSORS

INSURERS & LENDERS

HOUSING ASSOCIATIONS

HOUSEBUILDERS/DEVELOPERS

ERECTORS & INSTALLERS

CLIENTS & CONTRACTORS

CERTIFICATION

ASSOCIATIONS

ARCHITECTS, DESIGNERS & ENGINEERS

ADVISORS & CONSULTANTS

COMPANY

BUSINESS TYPES

STRUCTURAL TIMBER MAGAZINE | ISSUE 01 | AUTUMN 2014

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STA MEMBER DIRECTORY

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Innovation On-Site

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International Timber

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ISO- Chemie GmbH

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Isover Saint Gobain

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ITW Industry

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J Danskin & Co

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J J Smith & Co (Woodworking Machinery)

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James Hardie Buildings Products

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James Jones & Sons

WOOD PROTECTION

WINDOWS & DOORS

TIMBER FRAME

SOFTWARE PROVIDER

SIPS

ROOF SYSTEMS

MACHINERY

INSULATION

HYBRID

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Kestrel Timber Frame Kilane Construction Company

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Kingspan Century

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Kingspan Insulation

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Kingspan TEK

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Kingspan Timber Solutions

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KLH UK

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Knauf

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Knauf Insulation

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Layne Timber Systems Lewis Timber Frames

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Lilley & Son's

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Local Homes (Accord Housing Association) Lonza

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Lowfield Timber Frame

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LP Buildings Products

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Lucas Fettes

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LWT Contractors

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Mactaggart and Mickel Timber Systems

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Mantis Cranes

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MBC Timber Frame

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METSÄ WOOD

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Milner Associates

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MINT Construction

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MiTek Industries

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Mourneview Design

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National Self Build & Renovation Centre

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Neatwood Homes Norbord

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Norman Piette Norscot Joinery

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NZ Carpentry

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Oakworth Homes Ocean Group

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Oregon Timber Frame Osmose UK (Protim Solignum)

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Pasquill Roof Trusses

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Pattrick & Thompsons

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FLOOR CASSETTES

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Keepmoat

PEFC UK

FLOOR SYSTEMS

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Karlin Timber Frame (NE)

Pavlovskis Lister

FIXINGS & FASTENINGS

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K Lue Carpentry

Offsite Design Solutions

FIRE PROTECTION

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Intelligent Wood Systems

Mr Sips

CONDENSATION CONTROL

CLT & GLULAM

CLADDING SOLUTIONS

BUILDING BOARDS

ASSOCIATED PRODUCTS & SERVICES

TECHNOLOGY TYPES

MANUFACTURERS

TRAINING PROVIDERS

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Institute of Timber Frame Builders

JPQ International Consultants

TIMBER MERCHANT

SUPPLIERS

QUANTITY SURVEYORS

PROCESSORS

INSURERS & LENDERS

HOUSING ASSOCIATIONS

HOUSEBUILDERS/DEVELOPERS

ERECTORS & INSTALLERS

CLIENTS & CONTRACTORS

CERTIFICATION

ASSOCIATIONS

ARCHITECTS, DESIGNERS & ENGINEERS

ADVISORS & CONSULTANTS

COMPANY

BUSINESS TYPES

STRUCTURAL TIMBER MAGAZINE | ISSUE 01 | AUTUMN 2014

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STA MEMBER DIRECTORY

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ADVERTORIAL

REFLECT ON THE FUTURE OF CONSTRUCTION TECHNOLOGY

Over the last few years, tightening building regulations have led specifiers and contractors to look increasingly at innovative new technologies to enhance the energy performance of their designs. One of the many such technologies is reflective insulation, which has gone from being virtually unheard of, to being incorporated in almost every major house builder’s standard designs. By combining advanced manufacturing methods with physics and technology developed for the aerospace industry, such membranes allow the thermal performance of timber frame structures to be increased without a corresponding increase in wall thickness or weight.

reduced rate of heat flow, or u-value.

Since 2004, we at the A. Proctor Group have been continually evolving our two reflective construction membranes, the vapour permeable Reflectashield and its vapour control layer counterpart Reflectatherm, and today in 2014 we have developed these products to give the highest reflective insulation performance available in each class at 0.81m2K/W and 0.79m2K/w respectively. So after 10 years in this marketplace, it seemed appropriate to “reflect” on how we got here.

So how do we determine the effects these materials have on the overall u-value of the wall construction? There are several methods which can be used, however following extensive consultation with our partners and customers in the timber frame industry, we settled on the guarded hot box method as defined in BS EN ISO 8990, a long established and widely used method of determining insulation performance.

First of all, it may be helpful to consider how reflective insulation membranes actually work.

All such membranes work by restricting the transfer of infra-red radiation (commonly known as “heat”). In fact it can be argued the term “reflective” is actually something of a misnomer in this case, since the physical property governing the insulative performance relates not to reflection, but rather to emission and absorption of IR radiation.

The “emissivity” of a material is a measure of how easily the surface of a material can either absorb or emit radiation, in much the same way as tinted glass used in limousines makes it harder to see both in and out. When a reflective surface is used on a vapour control layer (on the warm side of the insulation, generally facing inwards) this surface limits the ability of the wall to absorb the heat from inside the building, leading to a

On the cold side of the insulation, reflective breather membranes make the outer surface less able to emit the heat back out again, which has the same effect. By definition heat that is not absorbed or emitted, is therefore reflected back into the building envelope. So (somewhat counter intuitively) the reflective surface does not need to point towards the heat source for reflective insulation to work. The only requirement is that the reflective surface faces an airspace, in order to maximise the proportion of heat transfer by radiation (as opposed to conduction).

This method uses a precisely calibrated heated box laden with 25 separate heat flow metres, allowing the changes in temperature across a test sample to be measured to an accuracy of 0.1°C. The samples used in this testing are in effect scale models of real timber frame wall panels, giving the closest approximation possible (under lab conditions) to the real world performance of the two membranes. The testing and measurements were conducted by the National Physical Laboratory based at Teddington in southwest London, a widely recognised centre of excellence in measurement practice, and the largest applied physics organisation in the UK. In addition to its market leading and TRADA certified thermal resistance of 0.81, the Reflectashield-TF breather membrane can uniquely be offered with custom printing of customer logos to any design specified.

Traditionally reflective membranes are supplied unprinted due to the ink reducing the thermal

performance, however using advanced image processing techniques adapted from medical cell analysis we are able to account for these effects and adapt the required print images to minimise the reduction in performance.

This gives our customers the same bespoke printing options already offered with our nonreflective Frameshield and Roofshield breathable membranes. Both membranes are also available in a range of roll sizes to meet the differing requirements of on and off site installation processes.

Based in Perthshire, Scotland, the A. Proctor Group has been supplying high performance construction membranes (designed and manufactured in the UK) for nearly thirty years.

Over this time our close links with both the timber frame industry and world renowned construction research organisations have allowed us to remain at the cutting edge of building physics, continually evolving our products and materials to meet the requirements of our industry partners and providing the perfect blend of performance and value. You can learn more about our state of the art products and unique history at; www.proctorgroup.com contact@proctorgroup.com 01250 872 261

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Polypipe

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Poppers Senco UK

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Pury Construction •

Rapid- EPS

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RCM

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Redrow Homes

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Reeves Consulting

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Rembrand Timber

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Resistant Buildings Products

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Rider Levett Bucknall

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Rob Roy Homes (Crieff)

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Robertson Timber Engineering

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Rockwool

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Roofspace Solutions

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Rotho Blaas SRL

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Rowlinson Constructions

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RPH Carpentry

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Sainsbury's Supermarkets

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SAM Mouldings

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SC4 Carpenters

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Scotframe Timber Engineering

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SEMA4c

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Senior Architectural Systems

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Sequoia Joinery

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Shire Timber & Truss Group

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Sidey

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SIG Insulation

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Simpson Strong-Tie

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Siniat

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SIP Build UK

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SIP Building Systems

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SIPCO

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SIPS Eco Panels

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SIPS Industries

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SIPS UK

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SiteSolve

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SmartPly Europe -Coillte Panel Products UK

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Smartroof

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Smiths Carpentry

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Solo Timber Frame

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Stanley Bostitch

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Steico

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Southern Timber Frame

Stewart Milne Timber Systems

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STA MEMBER DIRECTORY

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WOOD PROTECTION

WINDOWS & DOORS

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R G Carter Projects

Soovee (UK)

TIMBER FRAME •

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Promat UK

Skanska

SOFTWARE PROVIDER

SIPS

ROOF SYSTEMS

MACHINERY

INSULATION

HYBRID

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ProjectFire

Silvatec Design

FLOOR CASSETTES

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Primary Timber Frame

Rushmoor Engineering Services

FLOOR SYSTEMS

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Pollywood

RK-SIPs Design

FIXINGS & FASTENINGS

FIRE PROTECTION

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CONDENSATION CONTROL

CLT & GLULAM

BUILDING BOARDS

ASSOCIATED PRODUCTS & SERVICES

TECHNOLOGY TYPES

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PIVETEAUBOIS

Prime Meridian

CLADDING SOLUTIONS

Pinewood Structures

MANUFACTURERS

TRAINING PROVIDERS

TIMBER MERCHANT

SUPPLIERS

QUANTITY SURVEYORS

PROCESSORS

INSURERS & LENDERS

HOUSING ASSOCIATIONS

HOUSEBUILDERS/DEVELOPERS

ERECTORS & INSTALLERS

CLIENTS & CONTRACTORS

CERTIFICATION

ASSOCIATIONS

ARCHITECTS, DESIGNERS & ENGINEERS

ADVISORS & CONSULTANTS

COMPANY

BUSINESS TYPES

STRUCTURAL TIMBER MAGAZINE | ISSUE 01 | AUTUMN 2014

Available in a range of intumescent and MgO bonded finishes to reduce the risk of fire spread, and fully compliant with STA guidelines for a safer construction site: SterlingOSB Fire Solutions®

Another example of how Norbord makes it better

Find out more about SterlingOSB Fire Solutions® and Norbord’s full range of products designed for the building trade.

Call our Sales Team on 01786 819 225 or visit norbord.co.uk

Sticx

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Stuart King Architecture

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Super Structures

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Superglass Insulation

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Swift Timber Homes

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Sydenhams Timber Engineering

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Sylva Group

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Tailor-Made Designs

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Target Timber Systems

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Tees Timberframe

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TEKLA UK TFT Woodexperts The Border Design Centre

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The Timber Frame Company

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Thermal Economics

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Thomas Armstrong (Timber)

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Timber Frame Centre

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Timber Frame It (South East)

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Timber Frameworks (Alba)

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Thomas Consulting

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Tim Kelly Consulting Engineers

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Timber Constructions

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Trade Fabrication Systems

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Tremco Illbruck

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University of Bath

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University of South Wales

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Vinci Construction UK

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Walker Timber

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Whitbread Group

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White Air

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Whites Carpentry

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Willmott Dixon Re-Thinking

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Wolf Systems

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Woodbridge Timber

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Wyckham Blackwell

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Xtratherm UK

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Young Black

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ZeroIgnition International Inc

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Interested in joining the STA? Then why not apply for membership. Companies signing up for membership on 07 and 08 October at Timber Expo receive an exclusive offer of 15 month membership for the price 12 months.

To join sooner contact: bob.davis@structuraltimber.co.uk Or apply online at: www.structuraltimber.co.uk/members/join-today

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Wood & Co srl

Zero Carbon Hub

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Unilin Panels

Wood Protection Association

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Tyrone Timberframes

Wombourne Timber Frame Design

WOOD PROTECTION

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Swiss Krono Group

WINDOWS & DOORS

TIMBER FRAME

SOFTWARE PROVIDER

SIPS

ROOF SYSTEMS

MACHINERY

INSULATION

HYBRID

FLOOR CASSETTES

FLOOR SYSTEMS

FIXINGS & FASTENINGS

FIRE PROTECTION

CONDENSATION CONTROL

CLT & GLULAM

CLADDING SOLUTIONS

BUILDING BOARDS

ASSOCIATED PRODUCTS & SERVICES

TECHNOLOGY TYPES

MANUFACTURERS

TRAINING PROVIDERS

TIMBER MERCHANT

SUPPLIERS

QUANTITY SURVEYORS

PROCESSORS

INSURERS & LENDERS

HOUSING ASSOCIATIONS

HOUSEBUILDERS/DEVELOPERS

ERECTORS & INSTALLERS

CLIENTS & CONTRACTORS

CERTIFICATION

ASSOCIATIONS

ARCHITECTS, DESIGNERS & ENGINEERS

ADVISORS & CONSULTANTS

COMPANY

BUSINESS TYPES

STRUCTURAL TIMBER MAGAZINE | ISSUE 01 | AUTUMN 2014

STA MEMBER DIRECTORY

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