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    3M Fire Block Foam FB-Foam is a fire block and draft stop used to help seal, fill, insulate and bond for non-rated residential and commercial construction. This foam-in-place fire block is heat-resistant (up to 240F/115C) and meets ASTM E 84 (mod) Class 1 for smoke spread and flame development. This fire block foam is ready-to-use and tack-free in approximately 5 minutes.


    • Tested as a type V residential fire block to ASTM E 84 (modified)
    • Durable foam is heat-resistant (up to 240F/115C)
    • Acts as a draft stop to help reduce air infiltration
    • Thermal insulator foam offers an R-value of 4 in. - 5 in. (25.4 mm) typical
    • Fire block foam is ready-to-use (no mixing required)
    • Tack-free in approximately 5 minutes
    • Expands up to 200% in volume to quickly and effectively seal openings
    • Meets International Building Code (IBC) and International Residential Code (IRC) fire blocking requirements
    • Features minimal shrinkage and sag-resistant formulation to help ensure longevity
    • Excellent adhesion that bonds to concrete, brick, metals, wood, plastic and cable jacketing
    • Firestop sealant is compatible with CPVC piping (Check CPVC manufacturers' current compatibility list for firestop products before using)

    • Certifications and Listings: ASTM Compliant
    • Color: Orange
    • Coverage (linear ft.): 998
    • Dry to touch (min.): 5
    • Features: Fire and High Heat Resistant, Paintable, Stainable
    • Indoor/Outdoor: Indoor
    • Interior/Exterior: Interior
    • Kit: No
    • Pack Size: 1
    • Paint Tool Product Type: Caulk
    • Standard Color Family: Orange

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