Mike Whitfield Construction Ltd

Conversion of Upper Twyford Barns

scope: Building Contractor for whole project aims: Rebuild and conversion of two barns of approx 320m2 owned by Duchy of Cornwall into offices for sustainable architects Architype.This project won the national Royal Institute of British Architects Sustainability Award 2007 for the building that most elegantly and durably demonstrates the principles of sustainable architecture. measures: Roof and wall frames designed to minimise cold bridging.Warmcell insulation in breathable construction. Careful airtightness detailing.Homegrown timber throughout.High performance windows. Woodchip boiler with local supply. Reed bed.Low flush w.c.s waterless urinals.Low energy lighting.Reclaimed stoneslates and bricks. monitoring: Awaiting results fom woodchip boiler.....Airtightness in 2010 four years after completion was permeability of 1.3m3/m2/hr@50pa