Intumescent Mastic
FR Foam

Fire & Acoustic Sealant (Intumescent Mastic)

A one-part intumescent acrylic sealant suitable for internal applications Provides a firm, but flexible seal to joints in a variety of fire rated structures, as well as providing a good acoustic seal. It cures to form a tough tack free seal with excellent adhesion to a wide variety of building surfaces including plaster and wood.
It has been specially formulated to give good sound reduction properties when sealing and bonding plasterboard and other insulation boards, to seal potential air paths a continuous bead of the sealant should be applied to the perimeter of the partition and at all service penetrations.

Suitable for internal movement joints & perimeter pointing in acoustic partitions and structures, lap joints in fire rated cladding, sealing between fire doors and fire rated walls, sealing cable and pipe penetrations and for filling joints, voids and irregular holes in fire walls, partitions and other structures.
CE Approved - UL Classified
Up to 4 hours fire rating - Tested to BS476 Part 20:1987 & EN 1366-3:2004
40dB sound deadening properties - Tested to BS EN ISO 140-3:1995
Suitable for gaps up to 50mm wide
Can be overpainted

Supplied in 310ml cartridges in White, Brown or Grey
White available in singles or in packs 12
Brown available in packs 12
Grey available in packs 12

Colour & Quantity