Need Help?

Intumescent Mastic

Fire-rated mastics for sealing around fire barriers and penetrating pipes and services on a range of substrates and surfaces, such as brick, block and plasterboard. Helps prevent spread of smoke and fire through gaps and cracks.

Fire protection doesn’t have to be hard work, let our technical staff help you get the level of protection you require and the finish you want. If there is a product you cannot find, please contact our Technical and Sales Support Team on 0113 245 5450.

For clarification on minimum requirements before buying one of our fire-stopping products, please review the information provided in the 'DATASHEETS' tab on the product in question. A written specification should be obtained from our Technical Department for your project prior to use to ensure the product will be suitable.

There are 3 products.

Sort by:

Showing 1-3 of 3 item(s)

Thermoguard Intumescent Mastic

Thermoguard Intumescent Mastic, 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. Forms a char, preventing the passage of fire and smoke, when exposed to the heat of a fire. Tested around: metallic pipes, cable trays, cable...

£2.08

Shop now

In stock

Nullifire FS709 Intumastic HP Intumescent Sealant

Nullifire (Firetherm) FS709 Intumastic HP Intumescent Sealant is a heat-reactive, intumescent acrylic fire barrier mastic for internal use around services in walls and floors. Seals around pipes, cables and cable trays Provides up to 4 hours of fire resistance 60 to 120 min tack time (depending on temperature/humidity) More Information...

£167.34

Shop now

In stock

Astroflame Intumescent Acoustic Mastic

Astroflame Intumescent Acoustic Mastic, 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. Forms a char, preventing the passage of fire and smoke, when exposed to the heat of a fire. Tested around: metallic pipes, cable trays,...

£1.89

Shop now

In stock