Archetech Issue 26 2016 | Page 14

These begin with passive measures and a building form that orientates the long axis of the house in an eastwest direction, thereby enabling both beneficial heat gain in winter and the exclusion of solar radiation in summer, through the judicious use of a cantilevered roof overhang above the ground floor, south-facing glass facade. A dramatic double-height space at the heart of the plan, coupled with opening vents in the long upper level dormer window, provides opportunity for passive stack natural cooling in summer months. Furthermore, PV panels contribute to energy generation and the whole house is heated through a ground source heat pump, which provides underfloor heating and hot water. Other environmental features include airtight thermally heavyweight construction and triple- glazed windows (in excess of current building regulation u-values) and an earth tube ventilation system that ensures running costs are minimised and internal conditions are as comfortable as can be. Archetech - Page 14 Architects Jestico + Whiles www.jesticowhiles.com Location United Kingdom, Old Amersham Rd, Denham, Gerrards Cross, Buckinghamshire SL9 7BE, UK Architect in Charge Heinz Richardson, Jestico + Whiles Project Year 2016 Photographs Grant Smith www.grant-smith.com Rainwater is harvested for toilet flushing, clothes washing and garden watering and appliances have been selected for the highest rated energy-efficiency available. A wild meadow garden and living roof to the single storey garden room enhance the strong ecological value of the site. House 19 is a fusion of architectural moves, contemporary vernacular and pragmatic sustainability features and represents a benchmark for new houses in historic locations.