Model # 248314

Internet #100029171

GREAT STUFF 16 oz. Big Gap Filler Insulating Foam Sealant

Discontinued GREAT STUFF

16 oz. Big Gap Filler Insulating Foam Sealant

  • Easy application for gaps greater than one inch
  • Air-sealing and insulating saves up to 20% on home energy costs
  • 16 oz. Big Gap Filler Insulating Foam Sealant

Frequently Bought Together

Product Overview

GREAT STUFF Big Gap Filler Insulating Foam Sealant offers the same benefits as GREAT STUFF Gaps and Cracks but fills gaps larger than 1 in. So it's great for creating larger weather-tight seals to stop drafts and keep critters out. Plus, like all GREAT STUFF products, it's airtight, paintable, stainable and sand-able. It's polyurethane-based and perfect for all sorts of materials like wood, drywall, metal, masonry, glass and most plastics.




Warranty / Certifications

More Products With These Features


Customer Questions & Answers

Is the can and it's tube re-sealable?

Asked by: Anonymous
Yes, after a fashion (for great stuff in general). Take a 3-1/4 in nail (12d) and slide it about half way into the tube. With the can UPRIGHT, slightly pressurize the tube (this re-liquifies the product, you'll see the foam re-liquify in the tube). Later, when you want to use it again, to remove the nail, squeeze the tube (where it sticks to the nail) here and there with a pair of pliers to break the seal, and then the nail should pull right out, grab onto the head of the nail with the pliers and pull/twist. It'll keep a month, maybe two, I've gotten more than a dozen uses out of single cans across the span of days this way. If it doesn't dispense properly, it's been too long - just pitch it and start a new can.
Answered by: aLowFlyingDonut
Date published: 2016-06-17

how do you remove the sealant from your hands?

Asked by: Paul
Nail polish remover Acetone as per can instructions
Answered by: Bo
Date published: 2016-11-12

Can I use this to seal gaps in the window around the air conditioner? If yes, which product do you recommend?

Is this better than pillowy insulation squares?
Asked by: Chrissy
yes and any depending on the size of your gaps...I do this every year on my removable AC units (I have 4 in the house)
Answered by: Caerdic
Date published: 2016-07-27


Asked by: VONDA
It would fill the holes and cracks (if you could get the nozzle inside the material as this expands outward) but would in no way improve the integrity of the piece. Basically it will not help the issue nor make it better. This product is designed to fill in voids with the intention of preventing air flow and has no real structural value.
Answered by: chronosvandien
Date published: 2016-06-04
  • y_2017, m_6, d_27, h_6CST
  • bvseo_bulk, prod_bvqa, vn_bulk_1.0.0-hotfix-1
  • cp_1, bvpage1
  • co_hasquestionsanswers, tq_84
  • loc_, sid_100029171, prod, sort_[SortEntry(order=NUM_ANSWERS, direction=DESCENDING), SortEntry(order=SUBMISSION_TIME, direction=DESCENDING), SortEntry(order=LAST_APPROVED_ANSWER_SUBMISSION_TIME, direction=DESCENDING), SortEntry(order=LAST_APPROVED_ANSWER_SUBMISSION_TIME, direction=DESCENDING), SortEntry(order=BEST_ANSWER_FEEDBACK_COUNT, direction=DESCENDING), SortEntry(order=POSITIVE_ANSWER_FEEDBACK_COUNT, direction=DESCENDING), SortEntry(order=NUM_ANSWERS, direction=DESCENDING)]
  • clientName_homedepot
  • bvseo_sdk, java_sdk, bvseo-3.1.1
  • CLOUD, getContent, 99ms

Customer Reviews

16 oz. Big Gap Filler Insulating Foam Sealant is rated 4.0 out of 5 by 240.
Rated 5 out of 5 by from Works Great!! I bought this product to fill a crack outside between my fireplace and siding where bees decided to make a nest. This morning the bees were unable to get in, so hopefully they will go away. My only recommendation is to wear gloves while using this. I got a lot of it on my hands, and it became an unwashable sticky paste that I had to use nailpolish remover to get off. It got rid of the stickiness, but I still have caked on insulation on my fingers this morning that will eventually come off. Also, make sure you clean out the plastic application tube. After it dried out, I was able to use a shishkabob stick and toothpicks to push it out.
Date published: 2014-08-06
Rated 4 out of 5 by from How to re-use without throwing out after first use When I tried to re-use the can after one week, the built in straw broke off. I felt bad throwing out the can since it was still full, so I kept it for more than a week. Meanwhile i realized that the STRAW from DAP Tex foam sealant (that I also bought from Hdepot) could fit in the hole where the built-in straw was. SO I cleaned the hole and inserted the straw from DAP Tex and when I pushed the base aside to trigger the outflow of the foam, out came the foam !! But make sure to shake the can for a full minute ! SO DONT THROW OUT AFTER FIRST USE, get the STRAW FROM DAP TEX and you can fully use all the contents as I did! Note, it may be a little hard pushing the base of the straw-hole which triggers the outflow of the foam but if you wear gloves to minimize the pain, you can use up the entire can as i did !
Date published: 2014-05-13
Rated 5 out of 5 by from Does fantastic job! The key is: read the directions, & follow them! It is sticky, but uncured product will clean off using acetone. Cured product must wear off. Use your painting clothes, gloves, long sleeves, etc. Shaking can well helps to get out more quantity. Don't store cans for long periods, use fresh cans for best results. Squeeze nozzle gently, practice helps, don't overfill gap, half will expand to fill. Over filling means more trimming, & waste. No pets or kids in work areas, drips on floor will stick to shoes, clothes, hands, etc. I recently used about 15 cans to "airtight" my shop, with 11ft ceilings, pole bldg. Now we can heat it up to T shirt working conditions in no time. Well worth the money & effort!! Just be safe, & have a warm workspace, it expands more warm, & cures quicker too. BE SAFE!!
Date published: 2012-01-02
Rated 5 out of 5 by from Wow! This is Great Stuff!! Seriously, its worth the money. Buy a case and get to work insulating window and door frames, outlets, etc. They could have also named it "Draft be Gone" but what do I know. No more chilly air around the windows and door frames of my 115 year old house. Money in the pocket. Truth.
Date published: 2007-09-20
Rated 4 out of 5 by from Great Stuff This truly is great stuff. I used it to seal the areas under my doors where the concrete and foundation meet in the crawl space. I could not have gotten insulation into those places because they were too small. I was able to squirt this into those spaces with the little tube they give you. It expanded and filled the gaps perfectly. You have to use it all in one day though. Anything left over will not come out of the can the next day. It is for a one-time use.
Date published: 2011-01-09
Rated 4 out of 5 by from Expands so well it will push out stucco and dry wall Works well and will fill large gaps but there are a few problems if you are filling a wall cavity hence the one star reduction. I believe this product was designed to fill holes in basements and attics, gaps around pipes and crevices in framing which I have used it for with excellent results. I have also used it to fill uninsulated cavities in walls and that is where you need to be extra careful as, given the right conditions, it will push drywall, even stucco out and leave a bulge in the wall surface. The can instructions does not give an expansion ratio. This may be because the product will expand differently under various conditions (weather and compression). In a cavity where there is only one opening for the foam to freely expand, as the product cures, it keeps expanding for at least 24 hours when contained in a cavity, it will keep pushing in all directions and that is what you have to be very careful about. The product skims over in less than an hour but needs at least a full day maybe two to stop expanding in a restricted area especially if you spray in more layers as you fill the wall cavity. There are commercial products out there that spray insulation companies use that can fill a wall with minimal pressure that can save you from a major wall repair.
Date published: 2014-09-30
Rated 2 out of 5 by from Hard to clean after use Very hard to use, its messy and hard to control the amount you need for open space. When spraying hole it grows more and more leaving excess foam outside of hole. Clean up is the worse, once dried almost impossible to clean away access. I used a putty blade to try to shape foam, it did not work well and could not clean putty blade. What im saying is yes it covers small holes but hard to use product neatly.
Date published: 2016-07-13
Rated 4 out of 5 by from Big spaces, nothing less! My first building project was made from the plans for a children's playhouse. For an imperfect project this will fill in the spaces behind the trim and last for years. But, care must be taken to keep it off your clothing and hands. It does not wash off. It is advisable to finish the entire can in one use as it hardens. And, it really explodes into a huge piece of foam that is hard to cut back in size, it needs to be a big space to fill. All that in mind, it is a miracle worker for amateur builders!!
Date published: 2009-10-27
  • y_2017, m_6, d_27, h_8
  • bvseo_bulk, prod_bvrr, vn_bulk_1.0.0-hotfix-1
  • cp_1, bvpage1
  • co_hasreviews, tv_0, tr_240
  • loc_, sid_100029171, prod, sort_[SortEntry(order=RELEVANCE, direction=DESCENDING)]
  • clientName_homedepot
  • bvseo_sdk, java_sdk, bvseo-3.1.1
  • CLOUD, getContent, 109ms