When a fire ignites, it spreads by air movement between rooms, through unsealed penetrations in the walls and lumber. Building codes require the use of a draft stopping sealant in these spots, to reduce the potential spread of fire and help isolate flames to a single room. Fire Block Extreme is the perfect solution.
Engineered to seal with a single application in temperatures as low as 23°, Fire Block Extreme Straw is our most popular fire block foam, designed to work well with our Window and Door Extreme foam, in locations requiring the orange color for easy identification by inspectors.
