Fiberglass Supply Depot 2 Lb. Density Expanding Foam Kit: 2 Part Closed Cell Polyurethane Liquid Foam for Boat and Dock Flotation, Insulation, Soundproofing and Filling Voids - 2 Gallon Kit

Fiberglass Supply Depot, Inc. 2 lb. density pourable urethane foam expands fast to fill underfloor cavities, flotation chambers, dock floats and more for maximum buoyancy and safety. This two-part liquid mix and pour foam for flotation and insulation has a simple 1:1 mix ratio that makes it easy to measure and easy to use. There's no such thing as an unsinkable boat, but if the unthinkable happens, you can improve your chances of staying afloat.

This pourable liquid foam is easy to use, but it'll stick to almost everything. To help avoid messes and ensure proper adhesion, clean and prep the work area before you start mixing the foam components Once the resin and activator are combined, the rate of expansion varies greatly, depending on the temperature of the foam, ambient air, and work surface The recommended temperature range is 75-80°F, for proper expansion