RWA45
ROCKWOOL® RWA45 is a stone wool slab for thermal, fire and acoustic insulation applications.
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Application(s)
- Roof
- External Wall
- Floors & Ceilings
- Internal Wall
- Fire Protection
- Drylining & Partitions
- Standing Seam Roof
Product description
ROCKWOOL RWA45 slabs can be used for acoustic and thermal insulation of partition walls, ceilings, floors and roofs. As it is non-combustible, the product will not contribute towards the growth of a fire.
RWA45 is available in a variety of thicknesses. Specialist facings are available on request.
- Euroclass A1 in accordance with BS EN 13501-1 Reaction to Fire rating
- Thermal conductivity 0.035 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
RWA45 slabs are suitable for use on the following construction types:
- Flat roof
- Metal wall
- Partition wall
- Separating wall
- Intermediate floor
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 | 0.035 | EN 826 | λD | W/mK |
Reaction to Fire | A1 | EN 13501-1 | Euroclass | |
Long term water absorption | NPD | 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-0013-02 | |||
Facing type, side 1 | No Facing |
Product variants
Photo by: Adam Scott - @adamscottimages : Adam Scott - @adamscottimages - TO BE CREDITED WHENEVER PUBLISHED
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