new build
PROJECT OVERVIEW Building type: 110 square metre detached single residential unit Location: Hatfield Road, W4 1AE, London, UK Completion date: September 2015 Budget: ÂŁ450,000 Passive house certification: Passive house certified Space heating demand (PHPP): 15kWh/m2/yr Heat load (PHPP): 9 W/m2 Primary energy demand (PHPP): 93 kWh/m2/yr Environmental assessment method: Environmental Impact Rating B91
Floormate 700-A rigid insulation. U-value: 0.12 W/m2K WALLS Basement walls: 250mm Dow Floormate 300-A rigid external insulation outside 250mm reinforced concrete retaining wall. U-value: 0.146 W/m2K. Reinforced concrete wall (175mm) with 220mm Wetherby phenolic external insulation board system. U-value: 0.09 W/m2K Ground floor wall: Reinforced concrete wall (175mm) with 220mm Wetherby phenolic external insulation board system, finished outside with blue/grey engineering brick slips at lower ground flower level and London stock brick slips at ground floor level. U-value: 0.09 W/m2K
Energy performance certificate (EPC): B88
First floor wall: Blockwork wall (140mm) with 220mm Wetherby phenolic external insulation board system. White render with living wall externally. U-value: 0.085 W/m2K
Measured energy consumption: Not available yet
Internal finishes comprise a mixture of timber, white paint, and smooth concrete
Basement floor: Reinforced concrete slab (250mm) with 300mm Dow
Roof: Pre grown modular green roof system externally, followed underneath
Airtightness (at 50 Pascals): 0.572 ACH
by Rhepanol HG 1.8mm roofing membrane, Kingspan Thermataper TT47 LPC/FM PIR insulation system (170mm average, 140mm minimum thickness), vapour control layer, 65mm concrete screed, 155mm beam and block system, 40mm service void, 12.5mm plasterboard layer, 3mm smooth finish skim coat plaster. U-value: 0.145 W/m2K Windows: Internorm HF310 triple-glazed aluminium clad externally, with argon filling and overall U-value: 0.69 W/m2K Heating system: Space heating provided solely by MVHR (see below). Solar vacuum tubes from Worcester, Solar-Lux 6/12 supplying a 250 litre domestic hot water tank which is topped up by a gas condensing system boiler, which only provides hot water Ventilation: Paul Novus 300 Passive House Institute certified MVHR system Electricity: LED lighting throughout Green materials: External living wall, sedum naturally grown roof.
ph+ 41