Residential Fire Blocking Caulk 10.1 oz.
A noncombustible caulking compound used to fill the space around vents, ducts, cables and wires at ceiling and floor level in non-rated one and two family residential construction. Fire caulk is designed to seal penetrations to resume the integrity of fireblocks within concealed stud wall cavities to prevent the free passage of draft, flame, smoke and toxic gases.
Meets or exceeds ASTM-E136 performance specifications for noncombustible materials.