The 400 sq ft Slough Garden House features timber construction and timber window and door frames that were all sourced from FSC or PEFC certified sources. Foam insulation boards with secondary thermoreflective foil membranes ensure effective insulation and act as a moisture barrier. Double glazed windows finish out the thermal envelope and the entire structure is clad in Western Red Cedar, which is durable and requires no treatment.
The high-performance wall, roof, and floor were all prefabricated and then assembled on site. Built on a concrete plinth system from Swift, each garden house could easily be moved off its foundation and relocated if necessary. Finally, the cantilevered roof provides sun and weather protection to the house and a sedum roof provides insulation and rainwater absorption. In.It.Studios can build these prefab annexes in a number of sizes and prices start at £15,391.