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Great Stuff Big Gap Filler Expanding Straw Foam 20 oz - 157913 - Pack of 4
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About Great Stuff Big Gap Filler Expanding Straw Foam 20
Great Stuff Big Gap Filler Expanding Straw Foam 20 oz - 157913 High quality expanding urethane foam designed to fill large areas quickly and permanently. Uses include filling holes, cracks, or gaps that require a complete airtight and waterproof seal but are too large to be filled with ordinary caulk. The foam expands approximately 3 times its original volume, is tack free in approximately 45 minutes, and fully cured in 12 hours. Dispensing apparatus included with each can. UL classified. No CFC's. Features: 20 oz,For voids larger than 2",expands 60%,1" equal to R5 value Forms a permanent weather-tight seal to minimize drafts and insect infestation Bonds to wood, drywall,metal, masonry, glass, and most plastics, Interior/exterior use Tack free in six minutes-trims in 30 minutes,Foam elasticity allows for movement/shifting within a structure from winter to summer Paintable, stainable and sandable, Cures rigid, UL classified. Differences Between Latex and Polyurethane Foam Sealant There are two key differences between latex foam and GREAT STUFF polyurethane foam sealant: Latex foams are typically "open cell" and, as a result, can take on water. In fact, the same properties that allow you to wash latex foam off your hands with water also mean that the cured foam can absorb water. This can cause wood rot or deterioration in areas where wet latex foam is next to wood, such as a window frame. In contrast, GREAT STUFF is a closed-cell foam. It forms a water-resistant outer skin when cured. Latex foam does not expand. GREAT STUFF expands to thoroughly fill all voids and cavities making it an ideal air sealant.
