Boss 812 Fireblock Gun Foam is a 1-component polyurethane foam designed to fill and seal gaps, cracks, and penetrations in residential and commercial buildings. It helps prevent the spread of flames, smoke, and toxic gases by blocking air infiltration in concealed spaces—because nobody wants a surprise hot-air balloon in the wall.

Key Features & Design

• Fireblocking Formulation: Helps impede the passage of fire, smoke, and gases through service penetrations, top plates, and other concealed spaces.
• Bright Orange Color: Easily identifiable for inspection and code compliance.
• Excellent Adhesion: Bonds to wood, masonry, metal, and most building materials.
• Gun-Grade Application: Use with a dispensing gun for controlled application and minimal waste.
• Meets Building Codes: Tested and approved as a Type V residential fireblock foam per ASTM E84 and UL standards.
• Contractor Pack: Sold in a box of 12 – 24oz cans, ideal for high-volume use.

Specifications

• Brand: Boss
• Product Type: Fireblock Polyurethane Gun Foam
• Size: 24oz can
• Box Quantity: 12 Cans
• Color: Orange
• Compliance: ASTM E84, UL-Listed

Seal gaps and meet fire safety codes with confidence using Boss 812 Fireblock Gun Foam—the trusted choice for professional installers.