THE BIG GAP ERASER

When you find a gap or crack that’s a real monster, GREAT STUFF™ Big Gap Filler is the stuff. 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.

Here's what makes GREAT STUFF™ Big Gap Filler great:

  • Forms a long lasting, weather-tight seal to reduce drafts for greater comfort and lower energy bills
  • Adheres to wood, drywall, metal, masonry, glass and most plastics
  • Has elasticity that allows for movement and shifting within a structure
  • Interior/exterior use.

It's easy to use because it's:

  • All-direction dispensing.
  • Tack-free in 5–15 minutes.1
  • Rigid after it cures and can be trimmed in 60 minutes.
  • Paintable, stainable and sandable.
  • Cream-colored — so you can see it.
  • UL Classified.
  • Available in 12, 16 and 20-oz. cans.

1Skin of cured foam can discolor if exposed to natural light. Paint or coat foam for best results.
2 70 ± 5°F and 50 ± 5 % RH, 1 inch bead diameter, 6 inch length. Cure rate is dependent on temperature, humidity, and size of foam bead.

GREAT just got GREATER!

No drips, less mess - foam stops where you stop.
Reusable for up to 30 days - use again and again.
Precise, greater control.

DOWN TO THE DETAILS OF GREAT STUFF™ BIG GAP FILLER

Product Overview

Air-Seal Audit Checklist

Got a lot of GREAT STUFF™
projects on your to-do list?

HOW TO USE GREAT STUFF™ BIG GAP FILLER

Read all instructions and safe handling information before you start. GREAT STUFF™ products should not to be used for filling closed cavities or voids such as behind walls and under tub surrounds.

 

GREAT STUFF™ INSULATING FOAM SEALANTS SAFE HANDLING

For warnings and precautions, disposal information and more, download GREAT STUFF™ Consumer Safety Information or view our safe handling videos.

WHAT PROJECT DO YOU WANT TO START?

GREAT STUFF™ Big Gap Filler works in large gaps throughout the home.

Ready to go shopping?

See where you can buy GREAT STUFF™ and GREAT STUFF PRO™ in your neighborhood.

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