HandiFoam FireBlock Straw Foam Sealant 12 oz.

HandiFoam FireBlock Straw Foam Sealant is a professional-grade, one‐component polyurethane foam designed for fireblocking, insulation, and air sealing in residential and commercial construction. Dispensed through a handy straw applicator, this 12 oz. aerosol can delivers precise, controlled beads of foam that expand to fill gaps, cracks, and voids—helping to block the spread of fire, smoke, and drafts. Ideal for use around windows, doors, plumbing penetrations, and electrical outlets, this multipurpose sealant improves energy efficiency and enhances building safety.

Formulated for superior adhesion to wood, metal, concrete, and other common substrates, HandiFoam FireBlock cures quickly to a resilient, closed‐cell structure. Its broad temperature performance range ensures reliable application in virtually any climate, while its self‐containing aerosol design makes storage and cleanup simple. Whether you’re a contractor or a DIY enthusiast, this straw foam sealant provides professional results every time.

Key Features

• One‐component, ready‐to‐use polyurethane formula
• Includes precision dispensing straw for accurate placement
• Expands to seal and insulate gaps, cracks, joints, and voids
• FireBlock formulation slows the spread of flames and smoke
• Adheres to wood, metal, concrete, brick, and most building materials
• Cures to a durable, closed‐cell foam with excellent thermal and acoustic properties
• Broad performance range for use in extreme conditions