Once a house is finished it's extremely difficult to know the DNA of the house, how is it built? What makes it different?
The illustration is of a typically wall section that will go into the making of City Cabins, Martha Rose's newest green high-performance homes located on Queen Anne Hill in Seattle Washington.
Several key items to notice: the framing is double 2X4s, with 1" of rigid foam board on the exterior side, followed by ½" inch of plywood , and two layers of sixty minute paper and then covered with the siding.
The double 2x4 framing is filled with blow-in fiberglass batts that will have an R-26 rating, the 1" rigid foam will add another R-5 making giving the wall assembly an incredible R-31 value.