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Dow Great Stuff Pro Gaps and Cracks 24 oz Gun Foam (3 Cans) - 341557

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Special Price $31.75


Regular Price: $40.71

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Special Price $31.75


Regular Price: $40.71

Availability: Ships the next business day

    Product Description

    This product is for 3 cans of 341557.

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

    Dow GREAT STUFF Gaps & Cracks 341557 is a polyurethane-based insulating foam sealant that fills, air-seals and insulates small gaps (less than 1 inch) 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 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.

    The straw foam Great stuff loses between 10 to 15% of its Yield through the straw, whereas the Pro Gun draws every bit of foam from the can and is much quicker on the job. Time and Yield are essential ingredients for profit.


    • Forms a permanent weather-tight seal to minimize drafts and insect infestation
    • Exceptional adhesion to building materials
    • Interior or exterior use
    • Tack free in 6 minutes; Trims in 30 minutes
    • Foam elasticity allows for movement/shifting within a structure
    • Paintable, stainable and sandable
    • Cream colored foam
    • Cures rigid
    • All-direction dispensing
    • UL Classified
    • Fills, seals and insulates gaps up to 3"
    • Bonds to most building materials
    • High yield-up to 1,000 linear ft x 3/8" bead
    • Controlled expansion
    • Quick cure and trim
    • One can = 26 quart tubes of caulk

    Applications: Filling, sealing and insulating of joints, voids, and cavities. Also approved for use as an alternative fi reblocking material in indoor and outdoor-to-indoor plumbing, HVAC, gas and electrical penetrations.

    Installation: Read all instructions and safety information (MSDS) before using any product. Foam bonds to skin quickly - wear gloves, eye protection and work clothes during application. Use drop cloths.

    Surface Preparation: Surface should be free of oil, grease and excess moisture.

    Application: Great Stuff Pro is applied with a gun applicator at the junction of the plate line and the slab or foundation, any penetration through the top or the bottom of the plate line, cracks and holes in the exterior sheathing from penetration made for utility services, corner and T-wall intersections, and any other place where air might penetrate the exterior envelope.

    Storage: Store in cool dry area in upright position.

    Limitations: Great Stuff Pro professional foam should not be left permanently exposed to ultraviolet light.


    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


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