Industry leading Firestop Technology, INSS1440 Fire Barrier Caulk is a single component water-based acrylic intumescent firestop sealant. INSS1440 listed design use economical solutions and offer exceptional performance, making it more cost effective than other traditional firestop caulking’s. The product’s fast expansion technology quickly fills voids, offering excellent protection from fire, heat transfer, smoke, and gases.
