GREAT STUFF Gaps & Cracks Insulating Foam Sealant 12-Pack - Bulk Case

Our review of GREAT STUFF Gaps & Cracks finds this 12-pack of 20 oz cans aimed at homeowners and builders who need a reliable, bulk insulating foam for sealing gaps and cracks. The single biggest reason to buy is simple: it delivers a long-lasting, airtight seal with a straw applicator that expands up to 1 in to conform to irregular spaces, making it ideal for weatherproofing, pest prevention and finishing around plumbing or electrical penetrations. For anyone tackling multiple sealing jobs, this bulk case is a time saver and economical solution.

Key Features

• Minimal-expansion formula: Expands up to 1 in to fill the shape of gaps while avoiding excessive pressure on surrounding materials.
• Straw-applied dispensing: The included straw applicators let users deliver foam into tight or hard-to-reach gaps for more precise application.
• Quick cure time: Dries tack-free in about 20 minutes and becomes rigid for trimming in roughly 1 hour, keeping projects moving.
• Strong adhesion: Bonds to wood, metal, masonry, glass and most plastics for versatile interior and exterior use.
• Water-resistant seal: Forms a long-lasting airtight and water-resistant barrier that helps reduce drafts, moisture and entry by insects.
• Bulk value pack: Includes twelve 20 oz cans so you can cover many penetrations and save trips for refills on larger projects.

Who It's For

This product suits homeowners, remodelers and property managers who need to seal multiple gaps in attics, basements, around plumbing and electrical runs, and for exterior cracks where a rigid insulating seal is required. The bulk case is especially practical for contractors or DIYers working on whole-house air sealing or several rooms at once.

Users who need a paint-ready, trim-capable foam for finishing work will appreciate the quick cure and rigid trimability. Those seeking a small, single-can option or a non-expanding caulk-like product should look at alternative single-use sealants rather than this expanding polyurethane foam.

Pros & Cons

Pros

• Effective airtight and water-resistant seal that reduces drafts and keeps out insects.
• Straw applicator enables access to tight spots and controlled dispensing for cleaner results.
• Quick tack-free and cure times let you trim, sand and paint within an hour for fast finishing.
• Bulk 12-pack provides value and convenience for larger projects or multiple jobs.

Cons

• Some customers report mixed applicator durability, with occasional straw breakage during use.
• Color has mixed feedback and may not match aesthetic expectations without trimming and finishing.

Specifications

Product type	Insulating foam sealant
Can size	20 oz per can
Pack quantity	12 cans
Expansion	Expands up to 1 in
Cure time	Tack-free in 20 minutes, rigid for trimming in 1 hour
Application method	Straw-applied spray foam
Adhesion	Adheres to wood, metal, masonry, glass and most plastics

Our Verdict

GREAT STUFF Gaps & Cracks in a 12-pack is a practical, cost-effective choice for anyone sealing multiple gaps and cracks; it combines strong adhesion, fast curing and the convenience of straw application to speed work. While some users note applicator fragility and mixed opinions on color, the performance for air sealing, moisture resistance and finishing makes it a good value for larger projects and professional use.

Frequently Asked Questions

Can this foam be trimmed and painted?
Yes, it cures rigid and can be trimmed, sanded, stained or painted after it becomes rigid, typically about 1 hour after application.

What surfaces will it stick to?
The sealant adheres to wood, metal, masonry, glass and most plastics for interior and exterior use.

How large of a gap can it fill?
It sprays into gaps and cracks up to about 1 in in diameter and expands to fill the shape of the opening.