Open and Close Cell Insulation

Open-Cell vs. Closed-Cell Spray Foam: What Home Inspectors Need to Know

Join Cornerstone Home Inspector Education Center for a focused one-hour webinar that breaks down the key differences between open-cell and closed-cell insulation. Inspectors will learn how each product behaves, where it’s typically used, how to identify installation defects, and how these materials impact moisture control, air sealing, roof assemblies, and inspection limitations. This webinar gives home inspectors practical, field-ready knowledge to improve reporting accuracy and help clients better understand these increasingly common insulation systems.