james toney
New Member
Hello all, I am building a 6x6M2 timber framed extension. 150mm celotex between 150mm studs, the studs are sandwiched between OSB and cemboard and have wrapped the final layer in EWI system, 90mm rock wool. base coat and mesh, the finish coat is 3mm grained silicone. It has warm deck GRP roof that is ridged all round, internal drainage and minimum overhang, no soffit.