GE branded Window & Door Insulating Spray Foam is a polyurethane-based sealant that constructs an airtight and weatherproof seal. Low-pressure, low-expansion formula expands to fill gaps without bowing windows or door frames. It is versatile for interior and exterior projects. Foam sealant offers excellent adhesion to most building materials such as wood, vinyl, concrete, and stone and is easy to use and apply with its attached spray applicator; no spray gun required.