Firestop 400 Intumescent Acrylic Sealant White 380ml

Dow Corning Firestop 400 is an acrylic sealant for internal applications that can maintain the reliability of fire walls or partitions. It has good unprimed adhesion to most common construction substrates and will resist mildew and mould growth. Firestop 400 has intumescent qualities which enable the material to swell under heat conditions producing a fire and smoke resistant seal.