OSI 21.1 Oz. Fire Block Foam Sealant

OSI Fire Block Foam provides an effective barrier designed to inhibit the passage of fire, smoke, and toxic gases through service penetrations and other openings inside concealed space of Type V-A construction projects, occupancy group R3 and R5 (wood frame) buildings. This high-performance, single-component fire block foam sets in 10 minutes and cures upon reaction with moisture to form a flexible, low-pressure polyurethane foam. Developed for gaps that surround mechanical ductwork, plumbing, wiring, ventilation, and pipes, OSI Fire Block Foam adheres to most types of building materials including wood, concrete, brick, metals, cable jacketing; and will not harm PVC, CPVC and PEX pipe/tubing. It complies with all Federal and State VOC regulations.

• Provides an effective barrier against the fire, smoke, and toxic gases through service penetrations for Type V-A construction
• Long-lasting insulating foam with closed-cell structure thats flexible and will not crack or dry out
• Long-lasting fire block foam can be applied between 14F and 86F
• Tested to UL 723 in accordance with ASTM E84
• Tested in accordance with ASTM E814
• Conforms to IRC and IBC
• Coverage area of 611 Ft. (1/2 In. x 1/2 In. joint)