25mm Rockwool RockLap Pipe Insulation (76mm outer diameter) delivers pre-formed stone wool insulation segments engineered for straightforward installation. These sections arrive pre-slit with factory-applied foil facing and integrated self-adhesive lap, enabling rapid application directly onto pipework and secure sealing with backing tape.
Designed for heating and ventilation pipe protection across residential, commercial, and industrial applications, 25mm Rockwool RockLap Pipe Insulation sections deliver dependable thermal insulation performance across varied climates and exposure scenarios. The product benefits from over 60 years of proven reliability in the field.
These cylindrical stone wool insulation segments feature pre-slit construction for effortless fitting, combined with foil facing and integral self-adhesive lap technology.
Rockwool RockLap sections suit pipework operating between 0°C and 200°C. Specifically tested for fire stopping where steel and copper pipes penetrate fire-resistant walls and floors, this insulation runs continuously through separating elements, reducing installation time and labour expenses by eliminating localised removal or replacement requirements.
• Euroclass A2L-s1, d0 • Tested to EN 1366-3, the harmonised European standard for penetration seal fire resistance • Delivers up to 120 minutes* fire resistance integrity and insulation
25mm Rockwool RockLap sections offer water-repellent properties. When deployed or stored outdoors, protective waterproof covering is recommended. For cold pipe insulation applications, seal joints with foil tape to prevent condensation formation.
25mm Rockwool Pipe Insulation accommodates pipes operating between 0°C and 250°C. To preserve foil facing bond strength, insulation thickness must ensure outer surface temperature remains below 80°C.
Rockwool stone wool insulation products demonstrate exceptional resilience, durability, and dimensional stability, preserving thickness and shape throughout their lifespan. Extensive testing confirms Rockwool insulation maintains its thermal performance and characteristics for over 65 years following installation.








