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Gaps and Cracks





GREAT STUFF PRO™ Gaps & Cracks Insulating Foam Sealant is a minimal-expanding, single component polyurethane foam sealant for general purpose building envelope air sealing. As the first foam sealant to be recognized as a fireblock, GREAT STUFF PRO™ Gaps & Cracks resists the free passage of flames to other areas of the building through concealed spaces. Identifiable orange color.

Simplify foam application with PRO Series foam dispensing guns (PRO 13PRO 14 and PRO 15). Use GREAT STUFF PRO™ Gun Cleaner to simplify cleanup of uncured polyurethane foam from dispensing guns and work areas.

Building Code Compliance

ICC-ES Legacy NER-645. ASTM E331, ASTM E547, ASTM C1620 and complies with AAMA 812-04 and ABAA standards for air leakage per ASTM E283. UL Classified as a sealant. See CCMC 13074-R.



  • Designed to fill gaps up to 3" (75 mm), GREAT STUFF PRO™ Gaps & Cracks Insulating Foam Sealant expands to take the shape of cracks and voids
  • Forma a permanent, airtight and water-resistant bond
  • Bonds to vinyl, wood and metal surfaces.(1)
  • Once cured, it remains soft and flexible, permitting natural expansion and contraction of surrounding surfaces.
  • GREAT STUFF PRO™ Gaps & Cracks helps prevent drafts and repel water, helping enhance energy efficiency and improve occupant comfort.
Sizes and Estimated Yields for GREAT STUFF PRO™ Gaps & Cracks Insulating Foam Sealant
Can Size, oz (g) Delivery Yield, linear feet (m)(1)
24 (680) Reusable Straw 775 (236)
24 (680) Gun 970 (296)
30 (850) Reusable Straw 965 (294)
30 (850) Gun 1,450 (442)

(1) Estimated yield under ideal conditions, 3/8" (10 mm) bead.

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