42mm Bore 40mm Thick Rockwool RockLap Pipe Insulation
42mm Bore 40mm Thick Rockwool RockLap Pipe Insulation
- Product Code: A1-5855
- Delivery Time: 1 - 2 days
- Brand: Rockwool (Tech. support: 08712221780)
- Model: RockLap 42/40mm
Our ratings on 18-09-2026:

4.8 out of 5
42mm Bore 40mm Thick Rockwool RockLap Pipe Insulation
Length: 1000mm
Thickness: 40mm
Density: 120kg/m3
Weight/m2: 3kg
Thermal Conductivity: 0.033W/mK
R-Value: 1.2m2K/W
Fire Rating (Reaction to Fire): A1(Non-combustible)
Pipe diameter: 42mm
Service Temperature: up to 250°C
42mm RockLap H&V Pipe Sections are strong lengths of pre-formed insulation with a one piece, factory applied foil facing with integral self-adhesive lap. The integral lap ensures fast and easy installation: just snap the sections onto the pipe, peel off the backing tape and smooth down for a completely sealed joint. Supplied as 1 metre lengths in a number of insulation thicknesses.The Sections are designed for thermal and acoustic insulation of heating, ventilation and air-conditioning pipework operating in the temperature range 0C to 250C.
CHARACTERISTICS
- Resilient, high performance barrier provided by one-piece, reinforced foil with integral lap,
- Fast and simple installation reduces costs and time on site,
- Installation may be carried out in winter conditions,
- Tape requirement reduced,
- Are water repellent,
- Limited combustible product with surface finish also complying to Class 0,
- A naturally inert and rot-proof material that does not encourage or support the growth of fungi, moulds or bacteria, or offer sustenance to insects or vermin.
- Once installed RockLap H&V Pipe Sections shouldnt require any maintenance.
CERTIFICATION
- Rockwool H&V Pipe Sections are CE marked in accordance with BS EN 14303.
- RockLap H&V Pipe Sections conform to BS 39584, Bonded preformed stone wool pipe sections and can be used to satisfy BS 5422: Method for specifying thermal insulating materials.
- The product has been authorised for use in LUL surface and sub-surface premises
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