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🚪 Seal the Gap, Seal Your Status: The Pro’s Choice for Big Jobs!
Great Stuff 20 oz Big Gap Filler Insulating Foam Sealant is a high-performance polyurethane foam designed to fill large gaps over 1 inch. It forms a permanent, weather-tight, and waterproof seal that minimizes drafts and insect intrusion. Compatible with multiple materials including wood, metal, glass, and plastic, it cures quickly—tack free in 6 minutes and ready to trim in 30. One can replaces up to 30 tubes of caulk, making it an efficient and versatile solution for both interior and exterior sealing projects.












| ASIN | B009YNYBV8 |
| Brand | Great Stuff |
| Brand Name | Great Stuff |
| Color | Natural Color |
| Compatible Material | Glass, Metal, Plastic, Wood |
| Customer Reviews | 4.4 out of 5 stars 3,532 Reviews |
| Global Trade Identification Number | 00074985003028 |
| Included Components | 20 oz Big Gap Filler Insulating Foam Sealant ( package may vary ) |
| Item Dimensions | 2.75 x 2.75 x 11.25 inches |
| Item Form | Foam |
| Item Type Name | 20 oz Big Gap Filler Insulating Foam Sealant ( package may vary ) |
| Item Weight | 1.3 pounds |
| Item dimensions L x W x H | 2.75 x 2.75 x 11.25 inches |
| Manufacturer | Great Stuff |
| Material | Plastic |
| Material Type | Plastic |
| Model | 157913 |
| Number of Items | 1 |
| Number of Packs | 1 |
| Part Number | 157913 |
| Style | 20 Ounce |
| Style Name | 20 Ounce |
| UPC | 074985003028 |
| Unit Count | 20 Ounce |
| Warranty Description | Warranty |
| Water Resistance Level | Waterproof |
J**R
Big gap filler
Wish I had 100 cans of this product. It would save my foundation. Great product. Wish I was rich
L**2
Stop the Gap!
This works really well for filling good sized gaps and protecting against wind and drafts, rodents and pests from around openings into houses and sheds. It's easy to use if you follow instructions, and works really well. The only downside for me was that using a part of a can resulted in difficulty using any remainder at a later time as the spray nozzle was blocked by some of the dried spray foam.
J**S
One-time use
I bought this to make a very rough mold of an item that didn't have to be near perfect by loading up two small trashbags and sandwiching my item between them in a small box hoping it would expand. Though it didn't work for my purposes due to the fact that this compound depends on moisture in the air to cure. No big deal, probably serves the intended purpose very well and that's not why I came here to give 4 stars. It is definitely one time use and while others have suggested soaking the nozzle in water to prevent it curing in the nozzle between uses, the moisture actually causes the nozzle/tube to cure faster preventing further use. Planned obsolescence really irks me. They know what they're doing. They SHOULD provide additional nozzles with instruction steps clear to use some pin to clean out the nub on the can immediately after and between uses and provide extra plastic nozzles. Soaking/rinsing in water does not work and you would need to plan your usage to get everything you need in one session because it will lock up if left for 5 minutes and no movement of the solution through the nozzle.
T**Z
A little goes a long way
I give it five stars because it works to fill gaps but if you add too much expands too wide and it opens the Gap more so be careful how much you use up with it
M**C
Worked as advertised
I bought this to sound proof my extremely hollow door that was separating my bedroom From the hallway where all my other roommates rooms are located. Put 2 holes in the top of the door and sprayer both cans into the door. They both filled up my hollow door and made my room just that much more sound proofed. 5 stars all around
O**.
Very useful
Very useful it did the job filled holes or spaces
N**C
Try to use it all in one go
Stuff is sticky, wear gloves and old clothes. Don't think that you are going to be careful and it won't get on you. It will. Once it hardens, you can't get it off. When it's still wet, you can wipe if off if you use Acetone. But be careful with acetone, it will sips through you skin and it's toxic. Sound proofing is a dubious claim, I tried it on a pvc sewage line, unless you can have it encased from head to toe, and all around, you will still hear the flush. I have tried. It does not work. Even if you open up the walls, the pipe is about the same width of the cavities, you have no space for the foam. The stuff will expand to 5-6X, you get more with the 20 oz for the same 12 oz price at the big box store. You can close the tip and reuse it later, i would say within a short time only. Or you should submerge the plastic dispenser in acetone. Wear gloves!
L**J
Dries FAST!!
I used this to fill in the hollow area around my mailbox inside the wooden housing to keep out wasps. As I have a larger than normal box, the housing is larger too. This stuff dried so fast I had to use a whole bottle of nail polish remover to get it off my fingers where I missed. It isn't intended to be sheer - it's a tan/wood opaque and sands well after drying. I haven't tried to paint/stain it yet so not sure if it lives up to that yet. Happy with the ease of use and quality of product, just wish I'd worn gloves! :D The sprayer/tube is a nice help, but still requires a bit of hand strength, so was difficult with Carpal Tunnel/Arthritis. A product I would use again.
M**I
Defect products
Cans I received seem old and the form materials hardly came out. They are completely useless. Asked for return or exchange, but Amazon doesn’t allow it for some reason… very disappointing purchase.
Trustpilot
1 day ago
4 days ago