BOSS 814 UL Classified Intumescent Latex Firestop Sealant is a one part, elastomeric, intumescent firestop sealant that expands when exposed to fire or extreme heat, forming an insulated char
BOSS 814 will prevent the spread of toxic gases, smoke and fire
BOSS 814 is suitable for 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 has been tested to ASTM E-814 (UL 1479), And FireStop Caulk from a cartridge or foam- used in FireStop systems when penetrating a fire rated wall or floor/ceiling. (Intumescent)
BOSS 814 meets the criteria for fire/smoke/draft stop for BOCA, CABO, UBC, SBCCI, IRC, IBC