Rockwool RockLap 25mm Pipe Insulation 27mm OD

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.

Product specification

• Model: 25mm RockLap
• Thickness: 25mm
• Outer diameter: 27mm
• Length: 1000mm
• Density: 120kg/m3
• Thermal Conductivity: 0.033W/mK
• R-Value: 0.76m2K/W
• Pack quantity: 1
• Fire Rating (Reaction to Fire): A2L-s1, d0
• Resistance to fire: Tested to BS EN 1366-3 to provide up to 120 minutes fire resistance
• Brand: Rockwool

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.

Key features include

• Non-combustible construction with Euroclass A2L-s1, d0 rating
• Reinforced aluminium foil facing delivering a vapour-resistant barrier
• Self-adhesive foil lap enabling rapid installation whilst reducing reliance on additional aluminium tape
• Tested to EN 1366-3 standards for fire resistance of penetration seals, delivering up to EI 120 protection

Applications

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.

Fire performance

• 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.

Water Resistance

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.

Service Temperature

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.

Durability

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.

More Information on 25mm Rockwool RockLap Pipe Insulation (27mm Outer diameter)

• Manufacturer Link: 25mm Rockwool Rocklap
• Browse our complete Rockwool Insulation range and filter by thickness or coverage using the left-hand navigation. For project suitability advice or bulk pricing enquiries, contact us by phone on +4402038839057, email sales@insulationbee or Live Chat - Lowest UK Rockwool Insulation Prices.