new build
PROJECT OVERVIEW: Building type: 160 sqm two-storey timber frame detached house Location: Co Longford, Ireland Completion date: April, 2014 Budget: €187,000 (incl of Vat & PH certification, excl of architects’ fee and sewage works)
the office/guest house, which we have built to the exact same standard. When doing the groundworks we fitted an insulated pipe to deliver hot water from the main house, and we’ve installed a de-centralised Lunos MVHR unit from Partel in Galway here too. Has it been a “happily ever after” for this gang of four and was it worth the extra cost? Yes and yes. We are living in an amazingly efficient, comfortable home. So far so good as we start into our second autumn, which beckons blackberry picking season around here.
Passive house certifier: Mosart Roofing: CPF Profiles Ltd Electrical contractor: Smartheat Main contractor / timber frame: Self-build Mechanical engineer: Sean Magee Civil/structural engineer: AFM Consulting Engineers Project manager: Edward Rooney Mineral wool insulation: Isover PIR insulation: Quinn Windows: True Windows Insulated foundations: Kingspan Airtightness products: Siga MVHR: Beam Decentralised MVHR to guesthouse/office: Partel Stove: Spartherm Flue: Poujoulat
You can read more about Ross Cremin's passive house self-build on his blog, www.mollyglass2012.tumblr.com
Want to know more? SELECTED PROJECT DETAILS Client: Ross Cremin Architect: Cast Architecture Passive house consultant: Archie O’Donnell
The digital version of this magazine includes access to exclusive galleries of architectural drawings. The digital magazine is available to subscribers on www.passive.ie
Passive house certification: Certified Space heating demand (PHPP): 15 kWh/m2/yr Heat load (PHPP): 10 W/m2 Primary energy demand (PHPP): 101 kWh/m2/yr Airtightness: 0.63 ACH at 50 Pa BER: N/A yet Thermal bridging: Entire timber-frame envelope insulated externally to cut thermal bridging Ground floor: 300 mm concrete slab insulated with 300mm Aerobord platinum EPS 100. U-value: 0.112 W/m2K Walls: Plasterboard internally, followed outside by 100mm service cavity, 220 mm timber stud insulated with high density Isover Metac, 50 mm Quinntherm PIR outside the timber studs, ventilated studs, external blockwork rain screen. U-value = 0.102 W/m2K Roof: Corrugated metal roofing externally on counter battens, on Balaroid breather felt, on battens, on 50 mm Quinntherm PIR insulation, on OSB, on 220 mm timber rafter insulated with high density Isover Metac mineral wool, on Siga Majepall membrane and tapes with an internal service cavity of 100 mm also insulated with Metac. U-value = 0.103 W/m2K Windows: Gutmann Mira Therm 08 — PH78 PHI certified timber aluclad windows with insulated timber frames. Overall U-value = 0.80 W/m2K. Planilux glazing with low-e coatings and argon fill. Ug-value = 0.7 W/m2K. G-value = 62 %. Front door: Moralt Ferro Passiv PHI certified insulated timber door. Overall U-value = 0.8 W/m2K Roof windows: 4 x Keylite Futuretherm tripleglazed roof windows. Overall U-value: 1.0W/m2k Heating system: 8 kW Spartherm Ambiente A4 H20 room sealed wood burning stove with integrated heat exchanger to heat 300L buffer tank and three radiators (one in each bathroom). 2.6 kW to room, 5.4 kWh to tank. 88% efficiency. Certified airtight by DIBT. Poujoulat flue system with external air intake in insulated sleeve to prevent condensation and damper to close air duct when not in use. Ventilation: Dantherm HCH 8 heat recovery ventilation system installed within the thermal envelope, brings in fresh air to all living rooms and extract from all wet rooms. Passive House Institute certified to have heat recovery rate of 83%
ph+ 39