20mm Rockwool RockLap Pipe Insulation ( 21mm Outer diameter ) delivers pre-formed stone wool segments engineered for straightforward installation on pipework. Each section arrives pre-slit with factory-fitted foil facing and self-adhesive lap, enabling rapid application and secure sealing using backing tape.
These Pipe Insulation sections perform exceptionally well on heating and ventilation pipes across residential, commercial, and industrial settings. Delivering reliable thermal insulation performance for over 60 years, they excel in diverse climates and challenging conditions.
These cylindrical stone wool insulation segments arrive pre-slit for convenient installation, complete with foil facing and integral self-adhesive lap for superior performance.
Ideal for pipework operating between 0°C and 200°C, these sections excel at providing fire stopping where steel and copper pipes penetrate fire-resistant walls and floors. This proven testing means the insulation runs continuously through separating elements, eliminating costly local removal or replacement work.
• Euroclass A2L -s1,d0. • Tested to EN 1366-3, the harmonised European standard for the fire resistance of penetration seals. • Provide up to 120 minutes* fire resistance integrity and insulation.
Rockwool RockLap H&V Pipe Sections feature water-repellent properties. When deployed or stored externally, protect the insulation with a waterproof covering. For cold pipe insulation applications, seal joints with foil tape to eliminate condensation risks.
This 20mm Rockwool Pipe insulation suits pipes operating between 0°C and 250°C. Ensure adequate insulation thickness to keep outer surface temperatures below 80°C, preserving foil facing bond strength.
Rockwool stone wool insulation products demonstrate outstanding resilience, durability, and dimensional stability, preserving thickness and shape indefinitely. Independent testing confirms Rockwool insulation maintains its thermal performance and properties for 65+ years post-installation.








