Boss® Fireblock Draftstop Sealant Caulk 814 03419RD10 is a one part, elastomeric, intumescent firestop sealant that expands when exposed to fire or extreme heat, forming an insulated char. Great for fire stopping applications around pipes, ducts, vents, electrical wiring, masonry and other penetrations in the building envelope. BOSS® 814 will prevent the spread of toxic gases, smoke and fire. Adhesion to almost any surface and remains flexible, making it ideal for both horizontal and vertical joints, subject to vibration or dynamic movement. BOSS® 814 is suitable for interior or exterior applications, and can be painted (after inspection). Tested to ASTM E-814 (UL 1479) and meets the criteria for fire/smoke/draft stop for BOCA – CABO – UBC – SBCCI – IRC. Application is with a standard caulk gun; clean up with water. Color: Red Size: 10.1oz To see more caulking, fillers and/or spray foam air sealing options, please see links below.
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