Closed-cell spray foam is a medium-density polyurethane spray foam that yields a rigid cellular structure. Closed cell foam is full of small bubbles (cells) that are completely closed. Those cells are pressed together so air and moisture are unable to get inside the foam.
Closed-cell foam is much denser foam and does not expand as much as open-cell foam, adding structural integrity to the building. Closed-cell spray foam insulation outperforms traditional insulation by providing an air, water, and vapor barrier in a single component. Closed-cell foam boosts an impressive 6.5-7.5 R-value per inch.
Closed-cell spray foam insulation is ideal for crawlspaces, basements, metal surfaces, and areas with limited space.
