Rockwool RockLap 25mm Pipe Insulation 76mm

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.

Product specification

• Model: 25mm RockLap
• Thickness: 25mm
• Outer diameter: 76mm
• 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

These cylindrical stone wool insulation segments feature pre-slit construction for effortless fitting, combined with foil facing and integral self-adhesive lap technology.

Key features include

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

Applications

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.

Fire performance

• 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

Water Resistance

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.

Service Temperature

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.

Durability

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.

More Information on 25mm Rockwool RockLap Pipe Insulation (76mm Outer diameter)

• Manufacturer Link: 25mm Rockwool Rocklap
• Browse our comprehensive Rockwool Insulation range and refine by thickness or coverage using the left-hand filters. For project suitability guidance or bulk quotations, contact us via phone on +4402038839057, email sales@insulationbee, or Live Chat - Competitive UK Rockwool Insulation Pricing.