new build are sacrificed in order to stick to a budget. However, Boris says he has every intention of obtaining certification at a later date and if the preliminary measurements are correct, it should be a walk in the park.
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Click here to view additional information on these projects, including an online gallery featuring illustrations, photographs, and project overview panels. This content is exclusively available to our digital subscribers. SELECTED PROJECT DETAILS Client, architect & project management: Boris de Swart Timber frame: Shoalwater Timberframe Insulated foundations: Kingspan Aerobord Structural engineer: Hilliard Tanner Airtightness tester: Greenbuild GGBS: Ecocem, via Keohane Readymix Airtightness board: Smartply Airtight tapes & Gutex insulation: Ecological Building Systems Heating & ventilation: Nilan Ireland Roof windows: Velux External windows & doors: Woodmarq Electrical: MC Electrical Plumbing: John Paul Corkery Heating & Plumbing Timber floors: Junckers Beam central vacuum system: Solastech
PROJECT OVERVIEW
Aeroboard. U-value: 0.11 W/m2K
Building type: 238 square metre detached two-storey timber frame house
Walls: Factory-built timber frame with 10mm silicone based render on 60mm Gutex Thermowall, fixed to 225 x 44 cellulose filled stud, 12mm taped and sealed Smartply VapAirTight, 50mm service cavity, 12.5mm plasterboard internally. U-value: 0.14 W/m2K
Location: Model Farm Road, Cork, Ireland. Completion date: August, 2015 Budget: N/A Passive house certification: not certified Space heating demand (PHPP): 15.3 kWh/m2/yr Heat load (PHPP): 9.8 W/m2 Primary energy demand (PHPP): 115 kWh/m2/yr Airtightness: 0.09 ACH at 50 Pa BER: Pending from BER assessor Thermal bridging: Virtually no cold bridge at foundation/walls, walls/roof and walls/windows junctions. Aerobord insulated foundation connecting insulation layer to walls. Window/door reveals insulated. Y-values pending. Ground floor: 100mm concrete insulated raft floor insulated with 300mm Kingspan
Roof: Roadstone concrete roof tiles externally on 50x35 battens/counter battens, followed underneath by breathable roofing underlay on 12mm Medite, 380mm timber posi-joists fully filled with cellulose insulation, 12mm taped & sealed Smartply VapAirTight, 50mm service cavity, 12.5mm plasterboard ceiling. U-value: 0.10 W/ m 2K Windows: Kneer/Woodmarq triple-glazed solid timber spruce frame windows, with argon gas filling and overall U-value of 0.85 W/m2K Heating & ventilation system: Nilan Compact P heat recovery ventilation and heating system supplying underfloor heating and 430 litre domestic hot water tank Green materials: Timber frame, cellulose insulation, 50% GGBS cement.
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