GREAT STUFF™ Big Gap Filler Insulating Foam Sealant has the same benefits as GREAT STUFF™ Gaps & Cracks but differs in its expansion properties. GREAT STUFF™ Big Gap Filler expands about three times more than GREAT STUFF™ Gaps & Cracks. Because of the larger foam expansion characteristics, it is ideal for filling large gaps and holes greater than 1/2 inch. All GREAT STUFF™ products are polyurethane-based and offer superior performance advantages over latex products.

• Forms a permanent weather-tight seal to minimize drafts and insect infestation.
• Bonds to wood, drywall, metal, masonry, glass and most plastics.
• Interior or exterior use.
• Water-resistant
• 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.
• Superior adhesion to most surfaces like wood, metal, masonry, glass, plastics.
• Yields same as 19 to 25 quart tubes of caulk.
• All-direction dispensing.
• UL Classified.

Expansion Characteristics GREAT STUFF™ Big Gap Filler vs. GREAT STUFF™ Gaps & Cracks

Differences Between Latex and Polyurethane Foam Sealant

There are two key differences between latex foam and GREAT STUFF™ polyurethane foam sealant:

1. 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.
2. Latex foam does not expand. GREAT STUFF™ expands to thoroughly fill all voids and cavities making it an ideal air sealant.

®™* Trademark of The Dow Chemical Company ("Dow") or an affiliated company of Dow