Triple-expanding and easy to use, GREAT STUFF ™ Big Gap Filler helps enhance home comfort and energy efficiency.

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 approximately 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 for gaps, cracks and holes greater than ½ inch
  • Exceptional adhesion to wood, drywall, metal, masonry, glass and most plastics
  • Interior or exterior use
  • Airtight, water-resistant
  • Tack free in 6 minutes, Trims in 30 minutes
  • Foam elasticity allows for movement/shifting within a structure from winter to summer
  • Paintable, stainable and sandable
  • Cream colored foam
  • Cures rigid
  • Superior adhesion to most surfaces like wood, metal, masonry, glass, plastics
  • One 12 oz. can = up to 19 tubes of caulk
  • One 16 oz. can = up to 24 tubes of caulk
  • One 20 oz. can = up to 35 tubes of caulk
  • All-direction dispensing
  • UL Classified

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.

Material Safety Data Sheet(s)

Related Information

Stop Air Leaks with GREAT STUFF™ Insulating Foam Sealants (2.5MB PDF)

Building Code Compliance

UL Classified and meets CCMC 13074-R.

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