Some of the innovative features was the use of the triple glazed, argon filled Ecopassive timber windows consisting of a thermally broken frame giving a whole window u-value of just under 0.8W/m2 K and a glazing u-value of 0.6W/m2 K. The use of the plywood box for easy and accurate positioning posed some challenging airtightness details especially at the plywood box / blockwork and plaster junction and the window / plywood box junction. The use of Pro Clima Contega and Tescon Profile tapes hepled to provide a novel solution in both cases. Thermal bypass was addressed with the use of the aluminium cavity closer and the door threshold required the construction of a moulded fibreglass box section filled with polyfoam insulation.
