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Spray Foam Insulation

Internet #100029171

Model #248314

16 oz. Big Gap Filler Insulating Foam Sealant

(23)Questions & Answers (86)
  • 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
  • See More Details

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.

Internet #100029171

Model #248314

  • 7 in. Handle Swivel-Lock Retractable Utility Knife

    7 in. Handle Swivel-Lock Retractable Utility Knife

    (38)

    • Specifications

    Dimensions

    Product Height (in.)
    9.25
    Product Width (in.)
    2.75

    Details

    Insulation Features
    Paintable,Stainable
    Insulation R-Value
    R2
    Insulation Type
    Spray Foam Insulation
    Number of Pieces
    1
    Product Weight (oz.)
    16
    Returnable
    90-Day

    Warranty / Certifications

    Warranty Information
    NA

    Questions & Answers

    86Questions18Answers

    Hi, Can we use this product on galvanized pipe to fill and provide extra prevention for rusting inside the pipe?

    Asked by Kris November 5, 2020
    1
    Answer

    Dear Kris, Thank you for your inquiry. great Stuff products would not be recommended for use inside a pipe or other enclosed spaces nor will they be effective in prevention of rust. Regards, DuPont Contact Center

    Is this safe around gas pipes?

    Asked by SSellers January 24, 2018
    2
    Answers

    GREAT STUFF(TM) Big Gap Filler is frequently used to air seal around pipe penetrations in a wall, including gas lines, hot water lines, and dryer vents, without any issues. This product is flammable during dispensing. Do not smoke or use near open flame. Shut off pilot lights and sources of ignition until tack free.

    Is this safe around a fireplace fire boxed

    Asked by Dbux February 24, 2017
    3
    Answers

    When cured, the maximum use temperature of this product is 240°F, at which point the material is combustible. You may need to use a thermometer to check the temperature of the area in which you plan to apply the material. If you do decide to use GREAT STUFF(TM), please be sure that all pilot lights and other sources of ignition are turned off or disabled during the application, as well as during the approximately 8-hour cure time.

    What temperature range/humidity is bottom line for installation and full expansion?

    Asked by Bill November 12, 2016
    1
    Answer

    5 second Google search = http://greatstuff.dow.com/product/big-gap-filler.htm

    I'd like to insulate the cavities below the windows in a bay window bump out. Will this expand en...

    Asked by outinthecold November 2, 2016
    3
    Answers

    Hi outinthecold, GREAT STUFF™ is not to be used for filling closed cavities or voids such as behind walls and under tub surrounds; this improper use of the product could result in the accumulation of flammable vapors and/or uncured material. Failure to follow the warnings and instructions provided with the product, and/or all applicable rules and regulations, can result in injury or death.

    How to remove product from carpet

    Asked by October 27, 2016
    2
    Answers

    Dear Linda: It sounds like you (unfortunately) discovered just how sticky Great Stuff is! This is great for sealing surfaces, but not for your carpet, hair, hands or anything else. No standard solvent will dissolve or soften Great Stuff. The only option is to carefully scrape any large pieces off your carpet. After it fully cures, the foam becomes brittle -- so let the rest sit for a few days to make sure it is completely cured, then try a brush and a little water. I hope this is helpful. Mark

    Could I use this to insulate a chicken coop?

    Asked by chickenlittle October 14, 2016
    2
    Answers

    Yes but consider insulated boards/sheets, foil faced

    foam break down

    Asked by jerry October 13, 2016
    2
    Answers

    YES this is open cell foam not designed to carry weight Shop for no flat tires with a weight capacity rated instead

    Use around hot water pipes feeding into a room heater / radiator?

    Asked by HomeHVACAmeture October 10, 2016
    1
    Answer

    Google will help you in the future ala http://greatstuff.dow.com/projects/pipe-penetration.htm but even though they SAY OK, they don't post temperature tolerances to find found easily - I gave up and remembered some other products designed to be fire blocks = might be a better choice if they sport max. temperatures tolerated

    I need to fill a rotted out log and need it to be a half round shape. Once cured can it be sanded and stained?

    Asked by Bill September 21, 2016
    1
    Answer

    GREAT STUFF™ Insulating Foam Sealants are one-component foams that use moisture and the air to cure. They are designed to fill small cracks and gaps. The foam does not cure properly if it is used to fill large voids unless it is put down in layers and each layer is allowed 8 hours to cure before the next layer is applied. Once cured, this product can be sanded and painted.

    16 oz. Big Gap Filler Insulating Foam Sealant - page 2

    Customer Reviews

    • 2.5
      out of 23 reviews
    • 36% recommend this product
    Filter by:
    Showing 1-10 of 23 reviews
    May 12, 2012
    Junk!!
    I sprayed the product to seal a draft comming from the attic. The foam would not stick in the void and kept falling out.
    by codunn
    Response from Great StuffMay 14, 2012
    GREAT STUFF (TM) polyurethane foam sealant products use moisture in the air to cure. They are designed to fill small cracks and gaps with a maximum 3 inch diameter bead. For larger voids we would recommend Froth Pak™ Sealant or Insulation. Do not use GREAT STUFF (TM) sealants to fill enclosed voids such as behind drywall or under tub surrounds.
    Dec 13, 2013
    Waste of money
    This could be a great product but it is too messy to handle and use and is very expensive. If the cans were smaller and cheaper, it might be worth it, but not now. I have tried this a couple of times and wasted almost the whole can each time. I'm done with it. So many bad reviews here.
    by Mike11209
    Response from CIGDec 18, 2013
    GREAT STUFF™ straw containers sometimes lack the ability to control the amount of foam dispensed. For more control, please check out our GREAT STUFF Pro ™ Series. GREAT STUFF PRO™ Gaps & Cracks Insulating Foam Sealant is a minimal-expanding, single component polyurethane foam sealant for general purpose building envelope air sealing. Designed to fill gaps up to 3" (75 mm), GREAT STUFF PRO™ Gaps & Cracks Insulating Foam Sealant expands to take the shape of cracks and voids, forming a permanent, airtight and water-resistant bond to vinyl, wood and metal surfaces. Simplify foam application with PRO Series foam dispensing guns (PRO 13, PRO 14 and PRO 15). Use GREAT STUFF PRO™ Gun Cleaner to simplify cleanup of uncured polyurethane foam from dispensing guns and work areas.
    Nov 24, 2013
    Temperature for exterior application
    I want to use it to fill gaps outside the house. There is no indication what the lowest temperature is during application. The outside temperature range from zero deg. C at night time to 8 deg. c during the day at this time of the year where I live. Can I apply Great Stuff at this time?
    by Benj
    Response from CIGNov 26, 2013
    The contents of GREAT STUFF™ should be as close to room temperature as possible when dispensed. The application temperature should be from 40°F to 120°F (5°C to 50°C).
    Oct 23, 2013
    Good product for a "one time only" application.(all of can must be used)
    I used it for filling crackes and joints in the Ductwork of a Home Heating Furnace. This product really expands so it can be used to fill large gaps between Solid Foam Insulation. The downside is that the plastic screw-on "Flow Trigger Valve breaks off easily. It is much too flimsy and with that broke I had to waste about half of the can. I could not get spare triggers/nozzles from the store I bought it from and their attitude was "tough luck". Also, I noticed the product left over in the Discharge Tube dried very solidly and I doubt if I could have used it again even if the trigger had not broke. No warnings about this were given.
    by Doug
    Response from CIGNov 1, 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.
    Oct 20, 2013
    poor expansion, ran out quickly
    the expansion of the material was not what i expected, I tried to fill a 1" gap underneath a bathtub, the foam didnt expand enough to fill the vertical space. also, it ran out much quicker than i had imagined.
    by john22
    Response from CIGOct 24, 2013
    GREAT STUFF™ sealants use moisture in the air to cure. They are designed to fill small cracks and gaps. The foam does not cure properly if it is used to fill large voids unless it is put down in layers and allowed to cure before the next layer is applied. Do not use GREAT STUFF™ sealants to fill enclosed voids such as behind drywall or under tub surrounds.
    Oct 18, 2013
    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 joe123
    Response from CIGOct 24, 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.
    May 21, 2013
    product great,
    now I know why it's called great stuff, because it is great
    by papi
    May 19, 2013
    Great for insulating
    Used numerous times to fill gap/cracks, etc. Just wish that either here on the website in product Specifications or on the cans it would say "Contents estimated to fill X amount (square inches or feet) of a standard 16" O.C. 2 X 4 framed wall.
    by Robert57
    Response from Great Stuff™May 20, 2013
    GREAT STUFF™ Big Gap Filler Insulating Foam Sealant is not measured in Square inches or cubic feet. The theoretical yield of one component foams is measured in lineal feet with a 3/8” – ½” diameter bead. A 12 oz can of the GREAT STUFF™ Big Gap Filler has a theoretical yield of 250-300 lineal feet (3/8” diameter bead). The GREAT STUFF™ Big Gap Filler Insulating Foam Sealant was made for cracks and gaps up to 3”. This product was not made to be put in a large or enclosed areas, the foam will not cure correctly.
    Jan 23, 2013
    works great IF it comes out of the can..have returned several
    I have purchased several cans, whenIwent to use them a few months later the foam does not come out thru the straw but around the neck. I purchased just 1 and when I tried to use that one.....same thing. I could not get it to come out thru the straw/ I have used some of the cans and when they work they work very good. When I start a project, I want to finish andnot have to drive to the store to get a replacement.
    by chuck
    Response from Great StuffJan 29, 2013
    I am sorry to hear that you are having issues with our product. Please check the date on the bottom of the can. If the can was just purchased and is/is not expired the fastest way for a replacement can, would be taking it back to the store. I apologize for any inconvenience this may cause. If you have any other questions on our product please call us at 1-866-583-2583
    Jan 12, 2013
    Shrinkage
    A product description I read said the foam was "no shrink". My application was to use the material for a reusable packing foam for an item I ship a lot. OK I was not using it for what it wa openly intended but thought it would be great packing filler. But, over the period of days I found the material had shrunk about 10 %. A I had a large tight fitting foam mold I found had to several times re-cut the mold on the inside and add padding around the outside.Perhapss it would have not shrunk as much if it had stuck to the outside of the container which I did not allow. But just making a given size of in open space does allow the product to shrink over a multi day period. Would a version other than "Big Gap Filler" have shrunk less?
    by Gall
    Showing 1-10 of 23 reviews