RainScreen Duo Slab®
RainScreen Duo Slab is a BBA-approved insulation product for ventilated, sealed, and masonry cladding systems, providing thermal efficiency, acoustic comfort, and fire resistance.
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Application(s)
- External Wall
- Rainscreen Cladding
Product description
RainScreen Duo Slab for steel frame, timber frame or masonry walls is manufactured using Dual Density technology. The outer surface of each slab features a distinctly higher density than the underside providing a firm surface for the application of fixings and RainScreen Duo-slab is manufactured with a water repellent agent. The product can be cut to size and fitted around brackets. Adjacent slabs effectively ‘knit’ together to provide a continuous insulating layer by preventing gaps.
- Euroclass A1 in accordance with BS EN 13501-1 Reaction to Fire rating
- Thermal conductivity 0.034 W/mK
- BBA approved (Certificate No. 17/5402)
- Certified by Quiet Mark TM
Areas of application
Application for RainScreen Duo Slab are:
- Steel frame, timber frame or masonry walls in conjunction with a cladding system
- Steel frame or timber frame with a masonry outer leaf
Documentation

RainScreen Duo Slab Datasheet
RainScreen Duo Slab is a BBA-approved insulation product for ventilated, sealed, and masonry cladding systems, providing thermal efficiency, acoustic comfort, and fire resistance.

Rainscreen Duo Slab BBA Certificate
Certificate No. BBA-17-5402-Rainscreen Cladding Systems

Rainscreen Duo Slab BBA Certificate
Certificate No. BBA-17-5402-Timber or Steel Frame

Rainscreen Duo Slab Installation Guide
Installation guidelines for ROCKWOOL Rainscreen Duo Slab

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
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-0031 | |||
BBA certificate number | 17/5402 | |||
QuietMark certificate number | ||||
Facing type, side 1 | No Facing Alu Foil Glass Tissue (black, Neutral, White) |
Product variants
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