I want to build a small bungalow, and the overall floor area is very limite d so I'm wondering if there is a 4" thick walling material that meets the b uilding regs' thermal insulation requirements. It only needs to be load-bea ring enough to bear a tiled, pitched roof with a loft room inside. If I can make the walls 4" thick rather than the standard 11" cavity walls, I'll ga in 14" of floor space in each direction. Does anyone know of any such walli ng material?
Thank you..
JD