Fire Barrier Sealant

Firestop Caulk is an elastomeric, intumescent firestop Caulk that offers comprehensive UL Testing for a wide range of electrical, plumbing, HVAC and head-of-wall applications. It is designed to seal 'through penetrations' found in 1 and 2 hour fire-rated wood, gypsum and concrete floor and wall assemblies. It is often used to compensate for irregularly cut holes and to secure firestopping devices, collars, and sleeves as well as many other uses and is a staple in installers' toolboxes. Uses a standard caulk gun, comes in a 10 oz tube.