Dow Corning Acoustic & Fire Rated Sealants & Fillers

TESTED TO BS 476 PART 22/1987 (ISO 834) IN JOINT CONFIGURATIONS
Firestop 400 is a one part, fire rated intumescent acrylic sealant designed for internal perimeter pointing of fire rated door and window frames where the integrity of fire walls or partitions needs to be maintained. Under heat conditions it swells to produce a fire and smoke resistant seal. Firestop 400 does not emit halogenated by-products under fire conditions.

A moisture curing polyurethane foam that is ideal for filling gaps and voids in and around the home. The design of the flexible applicator nozzle allows easy access into awkward areas and as it cures, it expands to fill all surface irregularities. Once fully cured, it can be cut, sawn, sanded, painted or plastered over.

High performance polyurethane foam that seals, fills, bond and insulates most construction materials and provides up to 4 hours fire rating according to BS 476 part 20:1987. Acoustic Rated according to W=db59 foam sound reduction index