Intumescent Sealants & Mastics

Bulk Packs

Intumescent sealants and fire-rated mastics reinforce the fire resistance of walls, floors and door frames by sealing linear gap joint seals and metallic pipe penetrations.

At FireSealsDirect we stock some of the most trusted intumescent sealant and mastic brands, including Rockwool, Quelfire and Nullifire, all of whom meet the most stringent British and EU regulatory standards.

Acrylic intumescent sealants expand to fill a cavity when subjected to extreme heat and provide an extra layer of fire-resistant material to protect the structural integrity of a building.

Whether you’re searching for standard fire mastic, high expansion sealants or fire-rated silicone sealants, our vast range is sure to meet your requirements. Find out more about the different types of fire-rated sealant.

Visit our Advice Centre for comprehensive guides to intumescent sealant, or give our technical helpline a call for free, impartial advice.