GAPS&CRACKS FOAM SEAL 12OZ

GREAT STUFF Gaps & Cracks Insulating Foam Sealant is a minimal-expansion polyurethane foam designed to seal, fill, and insulate small gaps and cracks in residential and light commercial construction. It is commonly used to improve energy efficiency by reducing air leakage while helping block drafts, moisture, dust, and insects from entering through unwanted openings. The formula is designed for easy aerosol application, making it a practical solution for both professionals and DIY users.

This insulating foam expands as it cures, allowing it to conform to irregular spaces up to about 1 inch wide. It is typically applied around window and door frames, plumbing and electrical penetrations, baseboards, and wall joints where air sealing is needed. Its controlled expansion helps it fill voids effectively without placing excessive pressure on surrounding materials, making it suitable for areas that require a more precise application.

Once cured, the foam forms a rigid, durable seal that adheres to a wide range of common building materials, including wood, metal, masonry, drywall, glass, and most plastics. It can be trimmed, sanded, or painted after full curing, allowing it to blend cleanly into finished surfaces. This makes it useful not only for insulation performance but also for achieving a neat, professional appearance after installation.

Packaged in a 12-ounce aerosol can, this product is widely used in weatherization, remodeling, and general construction applications. It is designed to help improve overall building performance by enhancing air sealing and thermal efficiency, making it a reliable choice for sealing small but important gaps throughout the structure.