Great Stuff Big Gap Filler Insulating Foam Sealant is a ready to use expanding polyurethane insulating foam sealant that fills, seals and insulates gaps up to 3 inches.

The average home has a half mile of gaps and cracks where air and moisture can enter. Air sealing and insulating projects around the home can typically save homeowners up to 30% on home energy costs, according to the Residential Energy Services Network (RESNET). Seal out energy loss and improve comfort with Great Stuff Big Gap Filler Insulating Foam Sealant.

Great Stuff expands to take the shape of gaps, creating a long lasting, airtight and water-resistant seal. It's a simple way to minimize unwanted air flow and reduce condensation. New Smart Dispenser design eliminates mess and product waste by providing a precise application with no drips.