Latest News   |  New product Blue60 Frame Foam   |  Products in the news : Cladding Firestop & Ventilated Fire Barriers.

Home > Fire Rated Sealants

Fire Rated Sealant - (Intumescent mastic)

Fire Rated Sealant  | Intumescent Mastic by Astroflame

Our Price: £2.69
Price includes VAT

Pack Size


Intumescent Mastic Features:

Intumescent Mastic - Fire & Acoustic Rated.

CE Marked : Certifire approval

UL-EU, UL-US Listed

Tested to EN 1366-4:2006 AI:2010

Fire resistance testing to ASTM-E 1996, UL 2079

Fire resistance: EN 1366-3 EI 120, EN 1366-4 EI 240 and BS 476 300 mins.

Fire Classification to EN 13501-2.

Acoustic Isolation to EN 10140 to 63dB.

Product Description:

Intuchem supplied intumescent mastic is a fire rated, acrylic mastic with an acoustic rating.

Mastic is supplied in 310ml tubes, for standard applicator guns, in white, brown or grey and it can be overpainted.

It is designed for sealing gaps around fire doors, window frames and for sealing joints, voids and irregular holes in fire rated compartmentation structures - maintaining their integrity when sealing around pipes and cables that penetrate through them.

The sealant can provide up to 4 hours fire rating, depending on depth/width and volumetric area, and has been independently tested and approved by Certifire in accordance with BS & EN Standards.

Certifire Tested

This fire sealant can be used on most construction substances, although we do recommend that a small area is tested for adhesion on unusual substrates. It can be used in most low movement joints up to 25mm wide with no slump and can be overpainted.

Air Permeability testing to EN 1026 to 600Pa - 100Pa 0.0/0.0 m3/h/m2.

Mechanical Adhesion and Tensile testing to EN ISO 8039 & EN ISO 9046.

VOC LEED 2009 EQ c41.1 5CAQ MD, Rule 1168 ASTM D2369D

Tested with Metallic Pipes, Cables, Cable Bunches, Cable Trays and Cable Ladders.

Causes no known adverse effects to plastic pipes, plastic cables, sheathing or metallic components.

Joint movement capability of +/- 20%.

Highly flexible and water resistant.

Halogen free, resists fungi and vermin.

Fire Rated Mastic Performance Data:

Intumescent Mastic Performance table


Related Products
Fire PuttyFire Putty
Solvent free, easy to use, non-setting intumescent compound | Fire Classification to EN 13501-2 | Non-setting - easily removed and re-used.
Fire Resistant MortarFire Resistant Mortar
Fire Rated Mortar | Fire Resistance testing to EN 1366-3 EI 60, E 90, BS 476 - 300mins. | Load bearing up to 5kN