Abstract: A building and method of constructing same is provided which utilizes a substantially continuous vapor barrier enclosing two or more stories of a building. The second story floor joist assembly is supported on an inner wall assembly in the first story. A roof assembly which covers the entire building is supported on an outer wall assembly in the first story. A continuous vapor barrier encloses the inner wall assembly and all living areas and is positioned between the inner wall assembly and the outer wall assembly. A truss shoe and tie plate connect the outer wall assembly to the inner wall assembly through the vapor barrier so as to maintain a predetermined spaced relationship between the inner wall assembly and the outer wall assembly.