Model # 162848

Internet #100003351

GREAT STUFF 16 oz. Gaps and Cracks Insulating Foam Sealant
0074985004568

Discontinued GREAT STUFF

16 oz. Gaps and Cracks Insulating Foam Sealant

  • Air-sealing and insulating saves up to 20% on home energy costs
  • A quick, simple way to create an airtight, water-resistant seal
  • 16 oz. Gaps and Cracks Insulating Foam Sealant

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Product Overview

GREAT STUFF Gaps and Cracks is a polyurethane-based insulating foam sealant that fills, air-seals and insulates small gaps (up to 1 in.) inside or out. But you probably guessed as much from the name. What you might not have guessed is how easy it is to use, thanks to the straw applicator, or how it expands to take the shape of cracks and voids to form a durable, airtight and water-resistant bond that eliminates unwanted airflow and helps reduce condensation.

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Customer Questions & Answers

can this product be used to seal around an electric dryer vent?

I am concerned about the temperature and possible flamability
Asked by: bf24
I used it about 14 years ago to seal up around my gas dryer vent. Just last month while remodeling the basement, I had to chip the old Great Stuff from around the vent in order to re-align the elbow for the new drier location. It wasn't super hard to remove the foam, but it took some work and I was impressed with how well it had held up over the years. Once the dryer and the new vent piping was in place, I used two cans to seal up around it and lock the elbow and joint into position.
Answered by: HammerMan
Date published: 2016-09-15

Is this the correct product to fill in stucco cracks?

Asked by: Anonymous
No. Use a good quality stucco patch made by Rapid Set, available at Home Depot. I've done it myself. You can watch a good demo of this on You Tube.
Answered by: HomeOwnerCA
Date published: 2015-11-15

Is the foam yellow or white? I'm looking to use it for a craft project :)

Asked by: Anonymous
Try DAP expanding if you are looking for white BUT it doesn't add up to quality of Great Stuff.
Answered by: PHnoD
Date published: 2015-12-01

Can I use expanding foam to fill gaps in brick work under bog stone on a chimney?

Will the heat from the chimney cause a fire?
Asked by: Lucy
You need something like "Refractory Ceramic Fiber Moldable Sealer". Try Googling that term and see if you can find it locally; otherwise, you might be able to purchase on the Internet.
Answered by: FDR13
Date published: 2016-12-06
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Customer Reviews

16 oz. Gaps and Cracks Insulating Foam Sealant is rated 3.9 out of 5 by 209.
Rated 5 out of 5 by from Easy to use As a DIY kinda gal, needed this to fill the gap around my bathroom pipe so that creepy crawlers and draft won't occur anymore. Twist on nozzle, make sure your arm,eyes,hair is covered/protected..then spray away. Sprays and dries an ivory tone. Expands very quickly in humidity (shower steam). I got a smidgen on my finger. Used acetone/nail polish remover to take it off because it started to get tacky/sticky. I didn't need to use even 1/4 can, and I didn't want the rest to go to waste. SO, I used the acetone to unclog the spray nozzle by pouring a few drops in both ends then tapping it gently to loosen the goo. I also cleaned the black opening on the can itself. Brand new, unclogged,ready for use again in the future. I also read on the web goof off works too if you don't nail polish remover.
Date published: 2016-03-01
Rated 1 out of 5 by from New "anti drip" valve is not all that I've used hundreds of cans of Great Stuff and have always been happy with the results more or less, but they have introduced a new "anti drip" feature to the delivery straw that does the opposite of what it was intended. There are no instructions on the cap where the new feature is proclaimed, but apparently you need to pull the end of the straw to open the valve. Otherwise, the pressure builds inside the straw and at the slightest movement the straw un-threads from the can and there is a miniature explosion of foam at the top of the can you need to clean up, in my case off of my face since I had tucked my head neatly between the gas line and the water line in the joists of my basement ceiling.
Date published: 2016-09-15
Rated 5 out of 5 by from Great Stuff Usage Tips In the past 6 months, I have purchased at least 2 cases of this foam. The expansive and sealing properties of this foam are incredible. I've used it to seal up drafty holes in the house, around leaky air ducts and inside new walls to keep moisture and insects on the outside. I've learned a lot about this foam and have some tricks I hope you can use. ALWAYS shake the can well the first time. The foam really does tend to settle in the can and needs to be remixed for best consistency. Make sure the trigger is tightly secured. I even check it from time to time as I use it. Be light on the trigger, especially the first time. There is a lot of pressure in that can and it the foam will escape faster than you'd probably like it too if you squeeze too hard. Try not to let the foam weigh itself down. It will start to drip and fall if you get too much in one section. That's when things get messy. If you have to, wait for it to start setting up a bit and then spray some more to fill in the remaining gaps. Get the nozzle as deep into the crack as you can. That way the foam really fills up the void from the inside out. Once dry, the foam can be cut easily with a sharp knife or razor blade. I have used it as a backing for caulk or even putty before and then sanded and painted over it. If you don't use the whole can, clean out the nozzle and store it. It can be re-used later.
Date published: 2013-11-11
Rated 5 out of 5 by from Works great. Seal gaps to prevent bees from nesting. Reusable with straw. The dispenser tube will dry and clog up if entire can not used up - but a regular drinking straw can be substituted. Just remove it after use.
Date published: 2016-05-31
Rated 5 out of 5 by from Plan ahead kids!! Think out of the can. I have used this to insulate cold spots in walls where the insulation settled. I drill holes thru the plaster 6-8" apart and squirt foam in til the tone changes. Have plenty of holes drilled and you will never have a partial can. After it is cured use something pointy like a potato peeler to remove excess at hole, fill with spackle lite and touch up paint. I insulated a very cold bathroom that was a porch in a previous life this way.
Date published: 2014-09-23
Rated 5 out of 5 by from Great solution to improve insulation and stop air flow Hello all: We used Great Stuff foam on a number of projects, and it is a great solution to seal gaps and cracks, seal the edges and joints in XPS insulation board, fill the hard-to-get-to spaces around HVAC ducts, etc. Here are a few tips: (1) Installation: Great Stuff is a one-component foam and cures by pulling water vapor out of the air. You can double the expansion by spritzing a little water on the surface before you spray the foam, and misting some more water on the foam after you apply it. Start by testing with a ball of foam on a piece of cardboard at your home / job site. (2) Foam board: Great Stuff is ideal to seal the edges and joints in foam board, e.g. if you install XPS foam board from Home Depot in your walls or between the raters in your roof. A photo is attached of a recent project, where we installed XPS in the walls of a house on the Cape in Massachusetts, and sealed everything with Great Stuff. (3) Windows and doors: Make sure you use the "Windows and Doors" version of Great Stuff to seal and insulate around windows and doors. The low expansion rate and flexibility of the cured foam are essential. (4) Fireblocking and hot surfaces: Cured Great Stuff foam will ignite at 240 degrees F -- including the "Fireblock" version. This is significantly lower than the ignition point for wood studs. DO NOT install Great Stuff next to any hot surface, e.g. a furnace, hot HVAC ducts, canned ceiling lights, a fireplace or chimney, etc. Rock wool and 3M fireblock sealant should be used in hot areas; both are available at your Home Depot. I hope this is helpful. Mark
Date published: 2015-08-01
Rated 5 out of 5 by from Excellent Stuff It does exactly as it is described. Great Stuff (no pun intended). Used to seal all the holes and gaps in my garage. no more bugs or rain through the holes left by the people that built the garage. Took me about 1/2 a can to figure out the right amount to use. But a little goes a long way with this stuff. Even better deal when you can pick it up on sale.
Date published: 2016-06-28
Rated 4 out of 5 by from Great product, but... This gap and crack foam sealant is great! It really does work and seals well from drafts and moisture. I've used it in my basement and outside shed. It's tricky to apply at first, but once you get used to how much comes out and how to apply it it's much easier. Fyi, it does expand about x5 as much as you squeeze out so be aware! They only downside to this product is that it's a single use design. If you've only used half a can, you can't save the rest for another time as the foam expands in the tube and blocks it. But for a one-time projects it's great!
Date published: 2014-09-13
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