Great Stuff Pro Gaps & Cracks 24 oz Complete Kit - Professional Foam

In this review the Great Stuff Pro Gaps & Cracks 24 oz Complete Kit is evaluated from the perspective of contractors and serious DIYers who need a reliable, gun-applied foam sealant for larger penetrations. The bottom line: this kit is best for users who frequently seal gaps up to 3 in and want a reusable, gun-grade solution that reduces air leaks and helps meet fireblock requirements. The included AWF PRO dispensing gun and cleaner make it a practical package for ongoing jobs, while the orange, fireblock-rated foam provides a clear identifying color for code-conscious work.

Key Features

• Made in the USA: Proudly manufactured domestically, offering consistent quality and supply for professional crews and home projects.
• Expands up to 3 in: Fills and insulates larger gaps around framing, pipes, vents and sill plates, reducing the need for multiple products on the job.
• Fireblock rated orange foam: The orange color is easy to identify and the formula is designed to slow flame and smoke spread in concealed spaces for code compliance.
• Reusable gun-grade formula: The can remains pressurized and usable when left attached to the AWF PRO gun, allowing staged work without wasting product.
• Energy-saving seal: Creates a water-resistant, airtight barrier that helps prevent up to 40% of heating and cooling loss from air leaks, improving efficiency.
• Fast-setting and trim-ready: Tack-free in about 310 minutes and ready to trim in 60 minutes for practical workflow and quicker cleanup.

Who It's For

This kit is geared toward contractors, remodelers and experienced DIYers who need a high-volume, reliable polyurethane foam that bonds to most building materials and meets fireblock concerns. The included AWF 1000 gun, nozzles and cleaner make it useful for repeated jobs and seasonally spaced work where a reusable system saves time and waste.

Those working exclusively on small, cosmetic cracks or needing a UV-stable exposed finish should look elsewhere, since exterior, unpainted foam requires paint for long-term UV protection and the kit is optimized for larger gaps rather than hairline sealing.

Pros & Cons

Pros

• Professional-grade gun system and cleaner included gives a ready-to-use kit for multiple jobs.
• Strong adhesion and expansion up to 3 in handle larger penetrations around utilities and framing.
• Fireblock-rated orange formula and water-resistant seal support code-aware installations and energy savings.
• Reusable can when left on the gun reduces waste and cost for ongoing projects.

Cons

• Foam flow can be inconsistent for some users, producing variable output that requires care with the gun and practice to master.
• Exposed foam must be painted for UV protection, so it is not a finished exterior surface on its own.

Specifications

Product	Gaps & Cracks Polyurethane Foam Sealant Kit
Can size	24 oz
Kit contents	12 cans 24 oz, 1 AWF 1000 dispensing gun, 2 plastic nozzles, 2 extension straws, 2 x 12 oz cleaner
Expansion	Fills gaps up to 3 in
Fire rating	Fireblock rated (orange)
Drying time	Tack-free ~310 min, trim-ready ~60 min
Made	USA

Our Verdict

The Great Stuff Pro Gaps & Cracks 24 oz Complete Kit is a solid choice for contractors and experienced DIYers who need a reusable, gun-applied foam that handles larger gaps and supports fireblocking. The included AWF gun and cleaner make it convenient for repeat use, and the energy-saving, water-resistant seal delivers good value for projects that demand durable thermal and air sealing.

Frequently Asked Questions

Can the can remain attached to the gun between uses?
Yes. The kit uses a reusable gun-grade formula so the can can remain pressurized and usable when left attached to the AWF PRO gun.

How large of a gap will one can fill?
Each 24 oz can expands to fill gaps up to 3 in, making it suitable for larger penetrations around pipes, vents and framing.

Is the foam suitable for exterior use?
It bonds to most building materials and is suitable for exterior use when painted for UV protection; exposed foam should be covered or painted.