Red Devil Foam & Fill Large Gaps & Cracks Expanding Polyurethane Sealant 8 Oz

Red Devil Foam & Fill Large Gaps & Cracks is an 8 oz expanding polyurethane sealant designed for filling substantial openings around windows, doors, pipes, outlets, vents, and foundations. This aerosol foam expands to seal holes and cracks while providing insulation against drafts, moisture, and pests. The cured foam creates an airtight, waterproof bond and can be sanded, painted, or stained for a finished appearance.

This UL Listed sealant adheres to painted and unpainted wood, concrete, cinder block, aluminum, masonry, and fiberglass surfaces. The champagne-colored foam is formulated without HCFCs or CFCs, making it environmentally safe. Once painted, the foam provides UV protection for long-term durability. The product is suitable for both interior and exterior applications and meets standards for ASTM C920 elastomeric joint sealants.

Available in multiple sizes including 12 oz canisters and 20 oz aerosol cans, this foam sealant works effectively on window and door frames, electrical outlets, vents, and foundation penetrations. The quick-setting formula makes it ideal for contractors who need reliable gap filling that won't compromise when exposed to weather or temperature changes.