Fire Stop Bag Fire stop barrier in an intumescent bag Intumescent incombustible bags which stop the passage of fire through openings in walls. They are available in different sizes and they have to be placed to seal the openings, both in walls and floor slabs. At a temperature of 200°C the material starts to compact sealing the gaps thus avoiding the passage of the flames. Made from a fireproof fabric Contains intumescent putty seal inside
