Fire and Heat Resistant Sealants

Fire and heat resistant sealants are specialised compounds used to seal gaps, joints, and penetrations where high temperatures or fire exposure may occur. Providing durable, heat-resistant protection, they prevent the spread of flames, smoke, and hot gases through walls, floors, and ceilings. Browse our range of fire and heat resistant sealants, including silicone and intumescent formulations, with variations in curing time, temperature tolerance, adhesion, and suitability for indoor or outdoor applications. Offering differences in maximum heat resistance, fire rating certification, waterproofing performance, and compatibility with materials such as brick, concrete, metal, and timber, they ensure compliant installations. Ideal for fireplaces, chimneys, boilers, and ductwork, our sealants meet the needs of DIYers, builders, plumbers, and trade contractors. They feature strong adhesion to multiple surfaces, high-temperature tolerance, intumescent expansion for fire sealing, and resistance to smoke and gas penetration. Buy fire and heat resistant sealants today to benefit from fast next-day delivery for time-critical projects.