Rockwool RockLap 20mm Pipe Insulation 21mm OD

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.

Product specification

• Model: 20mm RockLap
• Thickness: 20mm
• Outer diameter: 21mm
• 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 arrive pre-slit for convenient installation, complete with foil facing and integral self-adhesive lap for superior performance.

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 swift installation whilst reducing reliance on additional aluminium tape
• Certified to EN 1366-3 standards for penetration seal fire resistance, delivering up to EI 120 protection

Applications

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.

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

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.

Service Temperature

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.

Durability

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.

More Information on 20mm Rockwool RockLap Pipe Insulation ( 21mm Outer diameter )

• Manufaturer Link: 20mm Rockwool Rocklap
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