The envelope consists of a number of assemblies. Window to wall ratio is 22%.
Wall assemblies are a combination of stud and mass wall. The approach to stud assemblies to fill the stud cavity with mineral wool insulation and put 3 inches of mineral wool insulation outboard of the vapor barrier. The approach at mass walls is similar, except that the stud cavity, which is shallower, is filled with foam-in-place insulation.
The air-vapor barrier is continuous, with carefully designed transitions and tie-ins at openings.
Slab on grade - 6" th.
XPS insulation 24" wide at perimeter - 2"
Foundation wall assembly
Foundation wall is essentially a frost wall. There is no basement. It is not insulated.
Above grade wall assembly
Cladding (brick, wood, metal panel)
Mineral wool insulation, 3.5" th.
Gypsum board sheathing
Studs with mineral wool insulation, 6" th.