new build
(above) The water storage tank is situated outside, as opposed to the attic, so it can’t burst and drain water down through the house
PROJECT OVERVIEW Development type: 12 unit scheme, consisting of 102 square metre, 3-bed, semi-detached two-storey timber frame houses constructed to certified passive house standards. Location: Madeira Oaks, The Moyne, Enniscorthy, Co Wexford. Completion date: The first two houses (No. 177&178) will be completed end of March 2016. Budget: Not disclosed. Selling price €170,000 Passive house certification: Pending. Space heating demand (PHPP): 13.83 kWh/m2/yr (provisional) Heat load (PHPP): 9 W/m
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Primary energy demand (PHPP): 112 kWh/m2/yr BER: Provisional BER Certificate of A2, Final Cert. awaited. Airtightness (at 50 Pa): 0.44 & 0.42 ACH Thermal bridging: All detailing of thermal bridging are in excess of ACDs. Ground floor: Ground supported concrete slab, 230mm Xtratherm PIR insulation (laid in three layers of 100mm, 80mm, 50mm,
SELECTED PROJECT DETAILS: Developer/main contractor: Michael Bennett & Sons Architect/passive house consultant: MosArt Civil / Structural engineer: Arthur Murphy & Co. Airtightness tester/consultant: Greenbuild Acoustic consultant: Dalton Acoustics Mechanical contractor: Harry Ryan Plumbing Electrical contractor: Doyle Bros. Build system & cellulose insulation: Shoalwater Timberframe Ltd. Mineral wool: Isover Floor insulation: Xtratherm Airtight membranes & tapes: Ecological Building Systems Airtight OSB: SmartPly Plasterboard: Gyproc Windows and doors: Munster Joinery Ltd. Heat pump & MVHR: Nilan Ireland Ltd. Radiators: EEW Ltd. Photovoltaic supplier: Solar Electric Ireland Sanitaryware: DPL Ltd. Roof tiles & concrete: Dan Morrissey & Co. Insurance: Creane & Creane Insurance
to enable the 80mm ductwork from MVHR system to be encased in the floor). U-value: 0.086 W/m2K External walls: Factory-built timber frame with cavity and 100mm thick rendered blockwork rain screen for outer leaf, filled with 184mm cellulose, Intello airtightness membrane and 50mm thick service void insulated with Isover Metac insulation provided to inner leaf prior to plasterboard with skim finish Gyplite plaster. U-value: 0.179 W/m2K Roof: Concrete roof tiles on fabricated roof trusses. Intello membrane to the underside of the roof trusses, 50mm service void, and 12mm plasterboard with skim finish Gyplite plaster. Infill above airtightness layer with 500mm cellulose insulation, full filling around truss members etc. U-value: 0.081 W/m2K Windows: Munster Joinery Passiv Future Proof triple-glazed windows range, Passive House Institute certified. Ug-values: 0.55 W/m2K. Uf-values: 0.76 to 0.84. Overall U-values: 0.84 W/m2K Heating/ventilation system: Nilan Compact P unit, Passive House Institute certified, combining mechanical heat recovery ventilation with hot water generation and storage, backed up with an additional 1 kW of secondary space heat generation. MVHR heat recovery efficiency at 80%. Renewables: Solar photovoltaic array provided by Solar Electric Ireland with an expected output of between 750-1100kWh/a.
(above) The party wall spec is a key factor in the excellent soundproofing performance. It features cellulose insulation behind Coillte’s newly developed VapAirTight OSB, under Gyproc Plank, followed by a layer of Gyproc Wallboard, with the joints of the two layers deliberately staggered to reduce sound transmission, and a sealant used at floor and ceiling level
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