Intumescent Mastic (310ml)

Intumescent Mastic is only available from us in the one cartridge size of 310ml. This product is a fantastic waterbased acrylic sealant used for fire protection. This product seals gaps around doors and windows, as well as around cables and wires. It is also able to fill small voids to maintain fire resistance. Its unique formula swells when exposed to heat which increases its volume to block any air gaps. It also produces a char which slows down heat transfer and blocks any smoke or toxic gases. If you need any further assistance with this product, please speak to a member of our expert team today.