Spray foam insulation offers a complete energy performance solution for wall construction in commercial design. Low-density open cell spray foam insulation provides an ideal means to completely insulate stud cavities while eliminating the potential for internal convection currents that could otherwise reduce performance. It also provides an effective air barrier to seal all areas and openings in a framed wall cavity. Medium-density closed cell spray foam insulation provides a high-performance solution for adding continuous insulation and an air barrier all in one product on the outer surface of sheathing on a framed wall. It will also cover smoothly and completely over all of the areas that could otherwise provide energy draining thermal bridges. The end result is a total high performance wall assembly solution that can enhance and work with virtually any architectural design approach. And, by virtue of that higher performance, the building owner will reap the benefits of energy cost savings and longevity of building for years to come.