25mm Rockwool RockLap Pipe Insulation (27mm outer diameter) delivers pre-formed stone wool segments engineered for straightforward installation. Each section arrives pre-slit with factory-fitted foil facing and self-adhesive lap, enabling quick application directly onto pipes and sealed using backing tape.
These pipe insulation sections excel at protecting heating and ventilation pipework across residential, commercial, and industrial settings. With over 60 years of proven performance, Rockwool delivers dependable thermal insulation across varying climates and exposure scenarios.
RockLap H&V Pipe Sections are cylindrical stone wool insulation segments, pre-slit for straightforward installation and supplied with foil facing plus integral self-adhesive lap.
RockLap H&V Pipe Sections suit pipework operating between 0°C and 200°C. They undergo rigorous testing for fire stopping where steel and copper pipes penetrate fire-resistant walls and floors. This certification means the insulation can run uninterrupted through the separating element, 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 the fire resistance of penetration seals. • Provide up to 120 minutes* fire resistance integrity and insulation.
25mm Rockwool RockLap H&V Pipe Sections offer water-repellent properties. When deployed or stored outside, protective waterproof covering is recommended. For cold pipe insulation applications, seal joints with foil tape to eliminate condensation risk.
25mm Rockwool Pipe insulation operates effectively on pipes between 0°C and 250°C. To preserve foil facing bond strength, select insulation thickness ensuring the outer surface remains below 80°C.
Rockwool stone wool insulation products demonstrate exceptional resilience, durability, and dimensional stability, preserving thickness and form indefinitely. Extensive testing confirms Rockwool insulation maintains its thermal performance and characteristics for 65+ years following installation.








