BOSS® FIRE STOP is a non-combustible filler caulking used for fireblock applications in the annular space around wires, pipes, ducts, vents, cable lines and other penetrations to the building envelope. It is a non-slumping sealant that sets to form a hard surface.
Provides flexible seal joints that can experience dynamic movements.
Up to 2 hrs fire rating.
Intumescent and non-intumuscent.
Easy to install.
Effective protection against conventional method.
Tested to ASTM E-814(UL 1479).
Technical Data Sheet
Sealing the joint