A one part intumescent acrylic mastic for sealing gaps around fire doors, window frames and for sealing joints, voids and irregular holes in fire rated structures. The sealant forms a char, preventing the passage of fire and smoke, when exposed to the heat of a fire.
Specification Details for Intumescent Mastic. (Sealants)
Please note that these product properties are not a replacement for the manufacturer's literature and it is always recommended that astroflame fireseals ltd is consulted before specifying.