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EERE » BTO » Building America » Solution Center Home » Image Gallery » Right – This builder installs 1 inch of XPS rigid foam on the exterior of the 2x6 walls then covers the foam with ½-inch plywood sheathing, which serves as a nailing surface for siding and trim.

Right – This builder installs 1 inch of XPS rigid foam on the exterior of the 2x6 walls then covers the foam with ½-inch plywood sheathing, which serves as a nailing surface for siding and trim.