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GREAT STUFF™ Gaps & Cracks is a polyurethane-based insulating foam sealant that fills, air-seals and insulates small gaps inside or out. But you probably guessed as much from the name. What you might not have guessed is how easy it is to use (thanks to the straw applicator) or how it expands to take the shape of cracks and voids to form a durable, airtight, and water-resistant bond that eliminates unwanted airflow and helps reduce condensation. UL Classified.

Forms a permanent weather-tight seal to minimize

  • Forms a permanent weather-tight seal to minimize drafts and insect infestation for gaps, cracks and holes less than 1 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

  • One 20 oz. can = up to 30 tubes of caulk

  • UL Classified

* Chemicals are prohibited on all domestic and international air shipments.


Tech Specs

Material Safety Data Sheets & Product Info Files

Fgun Instructions.pdf85 k
Gaps & Cracks Description.pdf334 k
info_dow_gaps_cracks.pdf1157 k
msds_dow_gaps_cracks.pdf92 k

Warranty Info

Return Policy
No merchandise can be returned without an authorization number. We do not accept returns on chemicals or coatings. Returns must be made within 15 days of invoice and must be in new condition. Materials returned must be shipped prepaid. Discontinued items, custom orders or items that have been out of our factory for 3 months or longer cannot be returned. Returns subject to minimum 15% restocking fee.

All of our products carry an unconditional 6-month guarantee, but Demand must be notified within 48 hours of receipt of defective or damaged merchandise or shortages. Defective products will either be replaced or repaired at no charge. Abused tools will be repaired and returned only if the customer consents to charges in writing.

Please Note - Disclaimer
The products in this catalog are offered as options for the purchaser. Having no control over the use of the products in this catalog, we assume no liabilities connected with their use. Under no circumstances are we or the seller liable for any loss, damage or expense of any kind arising out of the use or inability to use our products.