Residential Features & Benefits of Spray Foam Closed cell spray foam offers many features and benefits for high-quality, energy efficient insulation and air sealing applications. Mark Josephs of Honeywell, the makers of the spray foam blowing agent that also serves as the insulating gas, explains the features and benefits of spray foam. Closed Cell Spray Foam Insulation -- Installation & Building Codes Mason Knowles of the Spray Polyurethane Foam Alliance explains in-depth, the proper installation of polyurethane spray foam in many of hard to reach, hard to insulate spaces including crawl spaces, basements and attics. Code compliance is also reviewed including creating non-vented attic spaces. Fundamentals of Spray Foam Insulation Mary Bogdand,Senior Research Scientist at Honeywell gives and in-depth explanation of the properties of spray foam insulations including open and closed cell variations, high and low perm products, and the air and blowing agents within the foams. Open Cell Spray Foam Insulation: Overview and Installation Millions of tiny air pockets make foam insulation a very good insulation material. Take a look at how it works and the application method.