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What Is Spray Foam Insulation?

This form of insulation uses foam as an air barrier and seals ceiling cavities, floors, and walls from air movement. It also includes places around light fixtures, electrical outlets, and the areas where the walls meet the doors and windows. Spray foam is also sprayed in open cavity areas like rim joints, crawl spaces, attics, and new construction. Unlike other insulation solutions, spray foam does not lose its shape. In addition, the foam can fill up all cracks, crevices, and gaps without compressing, sagging, or settling over time.