#1 Home Improvement Retailer

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
  • View More Details
caret

Product Details

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.
caret

Specifications

caret

Questions & Answers

114Questions
caret
Q:Can you use at the wall sill when it will touch the sill and drywall. Will it wick moisture into the drywall?
by|Nov 28, 2020
1 Answer
Answer This Question

A:  Dear Lori: This is not the right product to use to fill a small gap between your window sill and drywall. Great Stuff is difficult to apply in a small area, sticks to everything and cannot be cleaned off, and does not sand smooth after it cures. For a gap of ~1/8" or less, use DAP Patch 'N Paint. For a larger gap use patching compound, e.g. 3M Patch Plus Primer Spackling Compound. Using a putty knife, fill the gap and leave a thin layer on top to sand flat. Allow it to dry for a few hours, then sand flat with a fine sanding sponge. Sometimes the patching compoud will shrink when it dries, and a thin second coat is required to achieve a flat surface. Then you're ready to paint. All of the products noted above are sold by Home Depot. I hope this is helpful, Mark

by|Nov 29, 2020
caret
Q:is it fish safe?
by|Oct 30, 2018
1 Answer
Answer This Question

A:  Great Question! The recommended product to use around ornamental fish and plants is our GREAT STUFF™ Pond & Stone Filler, Sealer and Adhesive. This product is specifically designed to help quickly and easily build beautiful water features, this polyurethane foam expands to fill gaps and cracks to help direct water to flow over the rocks in a waterfall, rather than under and in between. Please see the attached web link for more information on our GREAT STUFF™ Pond & Stone: https://www.greatstuff.dupont.com/products/pond-and-stone-foam-sealant.html

by|Oct 30, 2018
    caret
    Q:How to clean up the excess stuff
    by|Mar 18, 2018
    2 Answers
    Answer This Question

    A:  GREAT STUFF™ Insulating Foam Sealant products will chemically bond to just about all surfaces in a matter of minutes. If the foam has not cured yet, use GREAT STUFF PRO™ Gun Cleaner or fingernail polish remover (with acetone) to quickly remove the uncured foam. Test a small area of the substrate first as the chemicals in the nail polish remover and gun cleaner may not be compatible with the substrate being cleaned. Once cured, it cannot be removed with solvents and the only option is mechanical removal. On hard, smooth, or polished surfaces this may be accomplished very carefully with a single-edged razor blade. If this does not work, or if the foam is on a soft or porous surface, the only option is to attempt to remove it using a non-abrasive cleanser. The more effort spent scrubbing, the more likely it is to see positive results. If the non-abrasive cleanser does not work, consider replacement or refinishing. A more aggressive approach such as steel wool or sandpaper will damage the underlying surface. Only UV light will break the foam down and this takes months. Heat has no effect on the foam. It may soften, but it will not melt and the resulting fumes may be harmful.

    by|May 5, 2023

      A:  Dear Emelson: It sounds like you discovered how tenaciously Great Stuff clings to almost anything. Tarp and tape off everything nearby before you install it -- plus wear gloves and eye protection. No standard solvent will remove cured Great Stuff. The only option is to scrape it off. Wait until it has cured thoroughly. If the location is out doors or exposed to direct sunlight, however, the foam will gradually degrade and can be easily removed in a few months. Sorry there isn't a better answer! Mark

      by|May 5, 2023
      caret
      Q:this product got on my carpet , how and what do i use to get out of my carpet?
      by|Jan 13, 2018
      2 Answers
      Answer This Question

      A:  Unfortunately, there is no solvent that will remove cured polyurethane foam. Cured foam must be mechanically removed, which typically means scraping, sanding, or power-washing, however carpeting may be more difficult with these options. Remove as much foam as possible with a dull scraper or utility knife, then try scrubbing any remaining residue with a non-abrasive cleaner, keeping in mind that the fibers of the carpet may be fragile or susceptible to damage.

      by|May 5, 2023

        A:  Dear BR: You just discovered how tenaciously Great Stuff foam sticks to everything. No standard solvent will remove it. The best option: gently scratch as much of it out of your carpet as you can, without damaging the carpet. Then just wait. Great Stuff will slowly degrade in sunlight. After a few months, you will find that it softens and can be easily removed -- unless it is in a dark location. Sorry there is not a better solution! Mark

        by|May 5, 2023
        1 found this answer helpful
        Showing 1-4 of 114
        caret

        Customer Reviews

        3.4 out of 5
        (59)
        • 3.4
          out of 59 reviews
        • 64% recommend this product
        Filter by:
        Showing 1-10 of 59 reviews
        Make it a big job, because you can't use it a second time
        Once you start using this stuff, it just keeps on coming, so don't plan on taking a break for lunch or finishing the job tomorrow using the same can. Also don't even think about getting it on your hands, clothes, finish work or anything you don't want to wear it forever. Clean up is difficult to impossible.
        by
        Response from CIGNov 13, 2013
        GREAT STUFF (TM) polyurethane foam sealant products are one-component foams and do not lend themselves to re-use. Once a can has been used and allowed to sit, it will seal itself shut. One time use should be expected, which is stated on back of can. Here is a tip on how to prolong the use of a can: before starting your project, have a long nail or pipe cleaner with some WD40 handy. Once you are done using the product, saturate the long nail or pipe cleaner with the WD40 and slide that into the straw applicator. Leave the straw attached to the can and store it upright. That can may then restart for you for up to 30 days.
          The application nozzle breaks off when trying to use product
          Usually this is "great stuff" to use, however, the plastic nozzle breaks off when trying to use the product. This has happened on several cans bought from the same batch. This is not an isolated incident as it has happened with other cans in other batches of this product.
          by
          Response from Great Stuff TeamAug 27, 2013
          GREAT STUFF (TM) polyurethane foam sealant products have a 12 to 18 month shelf life, it sounds like you may have purchased a can that was either expired or sealed itself shut. The expiration date information can be found on the bottom of the can. As will items sold through retailers, Dow recommends to return any issued cans back to the place of purchase for exchange or refund.
            defective can
            For the second time this year I have had a defective can, the foam comes out around the seal between the valve and the straw.
            by
            Response from CIGMay 14, 2012
            We are sorry to hear that our products did not work properly. It sounds like you may have purchased defective or expired product. Expiration date information can be found on the bottom of the can. As with all items sold through retailers, defective product should be returned to the place of purchase for exchange or refund.
              Spray it onece and it doesn't stop!!
              Spray it onece and it doesn't stop!!
              by
              Response from DowGreatStuffDec 3, 2018
              Hi flustrated, Thank you for sharing your concerns with us regarding GREAT STUFF™ Insulating Foam Sealant products. We apologize for any inconvenience you may have encountered. For further information and assistance please contact our Customer Information Group at 1-800-441-4369. If the foam has not cured or hardened, use acetone or fingernail polish remover (with acetone) to remove the foam being careful not to spread it. GREAT STUFF™ Insulating Foam Sealant products will chemically bond to just about all surfaces in a matter of minutes. Once cured, it cannot be removed with solvents and the only option is mechanical removal. On hard, smooth, or polished surfaces this may be accomplished very carefully with a single-edged razor blade. If this does not work, or if the foam is on a soft or porous surface, the only option is to attempt to remove it using a non-abrasive cleanser. The more effort spent scrubbing, the more likely it is to see positive results. If the non-abrasive cleanser does not work, consider replacement or refinishing. A more aggressive approach such as steel wool or sandpaper will damage the underlying surface. Only UV light will break the foam down and this takes months. Heat has no effect on the foam. It may soften, but it will not melt and the resulting fumes may be harmful.
                Must Use Whole Can First Time - WASTES PRODUCT
                The cured product is great stuff. The application and management of the product is POOR. You must use the whole can the first time...you CANNOT REUSE A PARTIALLY USED CAN. So, how many times are you going to need exactly one can of product??? Even with first use, when you get down to about 25% of product left, it crawls slowly out of the can. Until they can fix the application problems, or they lower the price 25% I would not buy it.
                by
                Response from CIGFeb 6, 2014
                GREAT STUFF (TM) polyurethane foam sealant products are one-component foams and do not lend themselves to re-use. Once a can has been used and allowed to sit, it will seal itself shut. One time use should be expected, which is stated on back of can. Here is a tip on how to prolong the use of a can: before starting your project, have a long nail or pipe cleaner with some WD40 handy. Once you are done using the product, saturate the long nail or pipe cleaner with the WD40 and slide that into the straw applicator. Leave the straw attached to the can and store it upright. That can may then restart for you for up to 30 days.
                  You don't get a whole can worth
                  I've used Great Stuff for many years and loved it. i just bought another house and I'm in the process of sealing it up. I've bought about 10 cans in the past 2 weeks, and not one of them have dispensed the entire content. It will run out of propellant before all the foam is used. Hope this is just a bad run from the factory.
                  by
                  Response from CIGJan 30, 2014
                  GREAT STUFF (TM) polyurethane foam sealant products have a 12 to 18 month shelf life, it sounds like you may have purchased cans that were expired. The expiration date information can be found on the bottom of the can. As will items sold through retailers, Dow recommends to return any issued cans back to the place of purchase for exchange or refund.
                    • Recommended
                    Just clean out the tube for multiple use
                    I've been working over many months on various house issues and have used this same can of sealant multiple times - from large voids around 4" drains to small ones around electrical runs. Wear eye protection if you plan to clean out the tube, and use very low (5 psi) pressure and blow out the tube, a long, wooden Q-tip, and some denatured alcohol. Haven't had any problem with clogging. Also clean out the nipple on the can. These cans are not that expensive anyway but I'm scrappy. And on larger jobs where I've blown through multiple cans, they have all worked well. It's easy to overfill voids especially when you can't see the other side so have patience with the expansion. And large voids fill fine - just pause for a few seconds and be light on the touch, and it will all stick together. Wear disposable gloves and have some paper towels with you just in case.
                    by
                      • Recommended
                      Works great
                      Great Stuff works well. I would suggest that users read the fan's directions prior to purchasing or using it. The manufacturer should consider producing smaller cans, say 6-8oz cans. (Not sure how cost effective this would be for the company to provide the consumer with this option). Having purchased the product several times for small projects it has been a waste of money and the can's contents for me.
                      by
                        • Recommended
                        Poor delivery system
                        Can only use one time. Due to the delivery system design it clogs no matter what you try to do. - Leave product in tube and cut for next use = does not work next time - Take off clear handle/hose and spray clean with brake cleaner and shoot compressed air to really clean out = does not work next time Ends up being a huge waste of money unless you intend to utilize the entire product right when it is first used. The company needs to talk with the can vendor or if Dow is also making the can they need to re-design! Will find alternative products to use.
                        by
                        Response from CIGOct 24, 2013
                        All of our GREAT STUFF(TM) products are a one-component foam. Please see the response below, we realize that you gave the same statement for each product. GREAT STUFF (TM) polyurethane foam sealant products are one-component foams and do not lend themselves to re-use. Once a can has been used and allowed to sit, it will seal itself shut. One time use should be expected, which is stated on back of can. Here is a tip on how to prolong the use of a can: before starting your project, have a long nail or pipe cleaner with some WD40 handy. Once you are done using the product, saturate the long nail or pipe cleaner with the WD40 and slide that into the straw applicator. Leave the straw attached to the can and store it upright. That can may then restart for you for up to 30 days.
                          short shelf life
                          Great stuff Gaps & Cracks has a very short shelf life. The can I bought would not spray foam at all. Money down the toilet. Will not buy a Dow product again.
                          by
                          Response from Great Stuff, CIGAug 6, 2013
                          GREAT STUFF (TM) polyurethane foam sealant products have a 12 to 18 month shelf life, this is from the day it was made until the date on the bottom of can. Dow does recommend to check the expiration date when purchasing the product and using the GREAT STUFF™ as soon as possible. Here is a tip on how to prolong the use of a can: before starting your project, have a long nail or pipe cleaner with some WD40 handy. Once you are done using the product, saturate the long nail or pipe cleaner with the WD40 and slide that into the straw applicator. Leave the straw attached to the can and store it upright. That can may then restart for you for up to 30 days.
                            Showing 1-10 of 59 reviews