FOAM SEALANT GAPS/CRACKS 24OZ

GREAT STUFF PRO Gaps & Cracks Insulating Foam Sealant is a professional-grade, minimal-expansion polyurethane foam designed to fill, seal, and insulate gaps and cracks up to 3 inches wide. Formulated for use with compatible GREAT STUFF PRO dispensing guns, this high-performance sealant provides precise application control while creating an airtight, moisture-resistant barrier that helps improve energy efficiency and indoor comfort. Its low-expansion formula makes it ideal for sealing areas where controlled application and professional results are essential.

  Engineered for both interior and exterior applications, this insulating foam adheres to a wide range of common building materials, including wood, masonry, concrete, metal, glass, drywall, and most plastics. As it cures, the foam expands just enough to fill irregular gaps and voids, helping block drafts, moisture, dust, insects, and pollen while reducing unwanted air infiltration. The durable closed-cell structure provides long-lasting insulation and contributes to a more energy-efficient building envelope.
The professional gun-grade formula offers exceptional control compared to traditional straw-dispensed foam, allowing users to apply consistent beads with minimal waste. It becomes tack-free in approximately 30 minutes and features a restartable valve system that allows the can to remain usable for up to 30 days when left attached to a compatible dispensing gun under proper storage conditions. This design helps maximize product yield and improve jobsite efficiency for contractors and experienced DIY users alike.
Whether sealing around plumbing penetrations, electrical openings, wall penetrations, rim joists, or other common air leakage points, GREAT STUFF PRO Gaps & Cracks Insulating Foam Sealant delivers reliable insulation, durable performance, and precise application. Its professional-grade formulation, excellent adhesion, and controlled expansion make it an ideal solution for construction, remodeling, weatherization, and energy-efficiency projects.