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Dow Great Stuff Pro Gaps and Cracks 24 oz Gun Foam - 341557

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Special Price $13.99


Regular Price: $17.35

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Special Price $13.99


Regular Price: $17.35

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    Product Description

    Note: This is hazardous material, please read safety instructions before dealing with this item.

    Dow Great Stuff Pro Gaps and Cracks

    In the United States, GREAT STUFF PRO™ Gaps & Cracks was the first foam to be recognized as a fireblock, which means it resists the free passage of flames to other areas of the building through concealed spaces. The foam is a bright orange color, easily identifiable by U.S. code officials.

    Considering the combined open space created by gaps, cracks and penetrations in the average home can total as much as a 4' x 4' window left wide open, it’s no wonder that air infiltration is one of the biggest threats to a home’s energy efficiency. And as uncontrolled air movement drives up energy bills, it may also increase the potential for mold, mildew and other moisture-related problems.

    Great on Benefits For a professional seal, rely on GREAT STUFF PRO™ Gaps & Cracks.

    • Ideal for gaps and penetrations up to 3" (75 mm)
    • Expands to form airtight and waterresistant seal
    • Bonds to wood, metal, masonry, glass and most plastics
    • Repels and deflects water
    • Quick cure time (tack-free in less than 20 minutes, trim within 30 minutes)*
    • Cost-effective: 24 oz (680 g) can equivalent up to 22 quart tubes of caulk; 30 oz (850 g) can up to 33 quart tubes of caulk†
    • Easy cleanup with GREAT STUFF PRO™ Gun Cleaner
    • Orange colored foam

    *Actual cure time will depend on temperature, relative humidity and size of foam bead.
    †Based on estimated yield under ideal conditions using gun foam, 3/8" bead.

    The Professional Choice GREAT STUFF PRO™ Gaps & Cracks Insulating Foam Sealant helps prevent drafts, repel water and more, which can result in improved home comfort and greater customer satisfaction.

    • The first foam sealant to be recognized as a fireblock (US only)
    • Resists water intrusion
    • Maximizes energy efficiency



    General Characteristics

    PropertyTest MethodsGaps & Cracks
    Basis-MDI monomer, polyurethane
    resin propane/isobutene
    UL Classifi ed (Class 1)ASTM E-84Flame Spread 20/Smoke
    Developed 20
    DensityASTM D-16221.06
    Thermal Resistance (R Value)ASTM C-5184
    Percent Closed Cell ContentASTM D-2856>61.63
    Application Temperature-25°F to 90°F
    Storage Temperature-Up to 120°F
    Service Temperature--200°F to +200°F
    Shelf Life-12 months
    Tack Free Time-6-7 minutes
    Cure time-1 hour
    Cutting time-30 minutes
    Yield 24 oz canBead SizeLinear Feet



    Customer Reviews 6 item(s)

    Can get messy
    Make sure you practive with this product before you start your project. This stuff can go everywhere if you don't know what you are doing, and you will NOT remove this product from unintended areas easily. Mark my words
    Overall Rating
    Review by Daniel / (Posted on 6/6/2013)
    Terrific product
    I used 8 cans of this stuff in my home restoration project. Also use the door and window foam for the 13 windows I installed. I left a a half full can of the gap & crack gun foam on the gun for 11 months and it worked just like new, if anyone tells you differently, they must have done something wrong. When you change the cans be sure to shoot some cleaner into the gun mounting port to clean it out before mounting the new can.
    Overall Rating
    Review by Paul / (Posted on 8/26/2012)
    using for years
    I have been using this system for years... it is very sweet to be able to meter out your foam.
    If, you are not a pro -- not sure why you would need this.
    Overall Rating
    Review by ProPhotographer1 / (Posted on 6/21/2012)
    Great Stuff is great
    This stuff is great. I've been using the consumer grade of this stuff for a while now, but this plus a dispensing gun I bought brought everything to a new level. Now I don't have to worry about the stuff coming out after I've stopped squeezing the trigger.
    Overall Rating
    Review by dmfranko / (Posted on 2/1/2011)
    High Quality Product
    Don't mess around with the stuff you get at the big box stores. Spend the extra money on the gun and the pro cans.
    Overall Rating
    Review by Andrew / (Posted on 1/9/2011)
    I love spray foam.
    I love spray foam.
    This, combined with the pro handle make spray foaming so much neater and more accurate. You can also easily stop mid-can, which is great.
    Overall Rating
    Review by Stuff / (Posted on 5/4/2010)
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