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GREAT STUFF PRO Gaps and Cracks - 24oz Fireblock Foam Insulation Sealant, Pack of 12. Closed Cell, Polyurethane Expanding Spray Foam. Seals & Insulates Gaps Up to 3'. Applicator Gun Not Included

4.5 (8) Write Review
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$152.79

$ 75 .99 $75.99

In Stock

About this item

  • FIREBLOCK SEALANT. Recognized as a fireblock sealant, Great Stuff Pro Gaps and Cracks is orange-colored for easy identification and added safety
  • VERSATILE ADHESION. Works effectively on wood, metal, masonry, glass, and most plastics, providing a strong, durable seal
  • SEAL GAPS UP TO 3". This expanding foam sealant is perfect for filling gaps and penetrations up to 3" (75mm) in size, forming an airtight, water-resistant seal
  • TACK-FREE IN MINUTES. Great Stuff Pro Gaps and Cracks becomes tack-free in just 3-10 minutes for quick, efficient sealing
  • TRIMMABLE WITHIN 1 HOUR. Once applied, foam can be trimmed in just 1 hour for a clean, precise finish
  • EASY TO USE. Simply pop the top off the can, attach it to the foam gun, and open the valve to apply. After finishing, leave the can on the gun and close the valve until the next use
  • REDUCE ENERGY COSTS. According to the US DoE, gaps and cracks in your home can lead to 25-40% of heating and cooling energy loss, increasing utility bills. Seal up the gaps with Great Stuff Pro Gaps and Cracks Insulating Foam Sealant to prevent energy loss


GREAT STUFF PRO Gaps & Cracks Polyurethane Foam Sealant is a gun-applied, insulating foam sealant that expands up to 3 inches to take the shape of gaps, creating a long-lasting, water-resistant and fire block seal around plumbing and electrical in basements, attics, and more. Made in the USA.


Clay Gutierrez
Reviewed in the United States on March 13, 2025
This is better foam, It has a higher density foam than competitors.
Charles 3
Reviewed in the United States on March 12, 2025
Compared to the disposable cans with straws these are much better. The gun orientation makes it easier to use for me including getting into corners. These contain twice the product as those disposable cans and you can actually re use what's left later which is virtually impossible with the other cans. It does require the applicator gun and your also going to want a can or two of cleaner but it's worth it for the reusability.
Tom Stearns
Reviewed in the United States on January 10, 2025
Really good stuff
Stephen Potter
Reviewed in the United States on August 7, 2023
I'm working on insulating parts of my house and this was a great deal. Thankfully, all the cans arrived intact and there weren't any issues. Each can worked perfectly. If you have a large project in front of you, I recommend this!
R. Harkness
Reviewed in the United States on March 19, 2019
This is used with a gun and you get a lot more foam for your buck than the individual cans with the little straw applicator. The are fine for a once and done job. If you have to foam a lot, buy the gun. Be sure to buy a can of cleaner of it will ruin you gun after sitting a day or so. Remove the can from the gun. The can will spew out a little foam. Use the red spray cap on the cleaner to clean out the excess foam from the can. Now clean off the excess foam from the gun connection point and the tip. Finally, attach the cleaner can to the gun and spray until clear. Remove can but do not spray out the cleaner left in the gun. It is under pressure and will continue to clean. Store in an outside location as the cleaner will slowly seep out and smells.
Ed Hardy
Reviewed in the United States on December 9, 2019
It says it and the name, GREAT STUFF! Though it is pricey it's value will pay you back in the long run. If you purchase the injection gun made for these cans each can will go a long long way! I bought a case of cans and the injector and I'm still on my second can. There's not a crack left in the house or foundation. This product is not your every day but the store this is superior you you've used before having the ability to work it in there like a welder or a painter filling gaps and cracks little to none is wasted.
DAC
Reviewed in the United States on December 26, 2016
Given that this product promoted for sealing air leaks in confined spaces such as attics, crawl spaces, rim joists it is incomprehensible that it is packaged in a tall skinny can! Can + gun height is over 16 inches. For sealing my rim joists I resorted to using combination of this product and the much shorter and much cheaper spray can version for tight spaces (see photo for comparison of spray can height vs this version) only to discover spray can version also seriously flawed (will review separately).That said, if access not constrained the actual foam does the job nicely when attached to a reasonable spray gun. Is very sticky and does not expand too much. Cleanup with acetone until product dries at which point mechanical removal required. Firmly attaches itself to skin- I literally had to use sandpaper to get it off my hands after some had dried there so skin and eye protection are a must.Dow seems to have many formulations of this foam between the so-called "Pro" versions and the less expensive versions in the applicator cans and it is nearly impossible to judge which is best or what you are trading off when you choose one version vs the other. This version cures to a rigid foam.Buying case of 12 cans is at this writing about 60% cost of buying single cans at Home Depot. Ordered Dec 18 and arrived Dec 23rd.
Nathan Phillips
Reviewed in the United States on February 21, 2015
It works great as a gap filler. If your looking to do a spray on application this is not great stuff. It will not stick by itself. If your looking to fill gaps and cracks it is great stuff.