RW4
ROCKWOOL® RW4 is a resin-bonded stone wool slab for thermal, fire and acoustic insulation applications.
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Application(s)
- Roof
- External Wall
- Floors & Ceilings
- Internal Wall
- Drylining & Partitions
- Standing Seam Roof
- Internal Floors
Product description
The RW4 slabs can be used for acoustic and thermal insulation of partition walls, ceilings, floors and roofs. The product is rated Euroclass A1, non-combustible.
RW4 is available in three standard thicknesses from 50-100mm and can be supplied black or white tissue faced,or foil faced to one or both sides.
- Euroclass A1 in accordance with BS EN 13501-1 Reaction to Fire rating
- Thermal conductivity 0.034 W/mK
- CE marked in accordance with EN 13162:2012+A1:2015
- Density exceeds 10kg/m³ in accordance with Approved Document E
Areas of application
RW4 slabs are suitable for use on the following construction types:
- Flat roofs
- Partition walls
- Separating walls
- Intermediate floors
Documentation

ROCKWOOL Slabs Datasheet
ROCKWOOL® Slabs are made from stone wool and provide thermal, fire and acoustic insulation for various applications

ROCKWOOL Stone Wool BSI Kitemark Certificate
Certificate No. km06661-bs-en-13162-2012-a1-2015

ROCKWOOL Slabs Installation Guide
Installation guidelines for ROCKWOOL Slab Products RW3 RW4 RW5 RW6 RWA45

SUIS ROCKWOOL UK
Safe use instruction sheet ROCKWOOL stone wool insulation products

Republic of Ireland Price List
Price List March 2025

UK Price List
Price List March 2025
Certificates
Product properties
Name | Value | Test standard | Symbol | Unit |
---|---|---|---|---|
Declared thermal conductivity | 0.034 | EN 826 | λD | W/mK |
Reaction to Fire | A1 | EN 13501-1 | Euroclass | |
Long term water absorption | EN 12087 | WL(P) | kg/m² | |
Short term water absorption | NPD | EN 1609 | WS | kg/m² |
Product standard | EN 13162:2012+A1:2015 | |||
Declaration of Performance (DoP) number | UK-WER-0038-02 | |||
Facing type, side 1 | No Facing |
Product variants
Optimum acoustic performance at the O2 - Case study
The design of the O2 arena’s roof had to incorporate state-of-the-art acoustic engineering to eliminate virtually all nuisance ambient noise (bass thumping) outside the arena while ensuring as near perfect acoustics as possible inside the structure.
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