RAINCLAD®
Rainscreen Cladding
A high-performance, non-combustible A1 stone wool insulation for ventilated rainscreen façade systems.
60
Nominal density
0.035
W/mK conductivity
50–225
Thickness range (mm)
A high-performance, non-combustible A1 stone wool insulation for ventilated rainscreen façade systems.
Thermawool Rainclad® is a non-combustible stone wool insulation board designed for use within ventilated rainscreen façade systems. Manufactured from volcanic basalt rock, Rainclad provides reliable thermal insulation, fire resistance and acoustic absorption within external wall constructions.
The product incorporates a factory-applied hydrophobic treatment to reduce water absorption during installation while maintaining vapour permeability within the wall build-up. With a nominal density of 60 kg/m³ and a declared thermal conductivity of λ = 0.034 – 0.035 W/mK, Rainclad delivers high-performance thermal insulation suitable for modern façade systems.
Rainclad insulation is suitable for buildings of any height, including those exceeding 18 metres, when used within compliant non-combustible façade constructions.
Need a bespoke specification? For project-specific density and thickness beyond the standard range, see Rainclad+, engineered for complex facade projects.
RAINCLAD® is specified across Rainscreen Cladding constructions. Typical application areas include:
Datasheets, Declarations of Performance, BIM files and certificates for RAINCLAD® are available on request from our technical team.
Contact technical team| Name | Value | Unit |
|---|---|---|
| Reaction to fire (Euroclass) | A1 — non-combustible | — |
| Classification standard | BS EN 13501-1 | — |
| Nominal density | 60 | kg/m³ |
| Declared thermal conductivity (λD) | 0.035 | W/mK |
| Thickness range | 50–225 | mm |
Full property schedule (water absorption, vapour resistance, compressive strength, dimensional stability) available on request.
| Product code | Thickness (mm) | Width (mm) | Length (mm) | Pieces / pallet (pcs) | m² / pallet (m²) |
|---|---|---|---|---|---|
| TWR60050 | 50 | 600 | 1200 | 80 | 57.6 |
| TWR60060 | 60 | 600 | 1200 | 64 | 46.08 |
| TWR60075 | 75 | 600 | 1200 | 60 | 43.2 |
| TWR60080 | 80 | 600 | 1200 | 48 | 34.56 |
| TWR60090 | 90 | 600 | 1200 | 48 | 34.56 |
| TWR60100 | 100 | 600 | 1200 | 40 | 28.8 |
| TWR60110 | 110 | 600 | 1200 | 40 | 28.8 |
| TWR60120 | 120 | 600 | 1200 | 32 | 23.04 |
| TWR60125 | 125 | 600 | 1200 | 30 | 21.6 |
| TWR60130 | 130 | 600 | 1200 | 30 | 21.6 |
| TWR60140 | 140 | 600 | 1200 | 24 | 17.28 |
| TWR60150 | 150 | 600 | 1200 | 24 | 17.28 |
| TWR60160 | 160 | 600 | 1200 | 24 | 17.28 |
| TWR60170 | 170 | 600 | 1200 | 20 | 14.4 |
| TWR60180 | 180 | 600 | 1200 | 16 | 11.52 |
| TWR60190 | 190 | 600 | 1200 | 16 | 11.52 |
| TWR60200 | 200 | 600 | 1200 | 12 | 8.64 |
| TWR60220 | 220 | 600 | 1200 | 12 | 8.64 |
| TWR60225 | 225 | 600 | 1200 | 12 | 8.64 |
| TWR PLUS | — | 600 | 1200 | — | — |
Project references and case studies featuring RAINCLAD® are available on request.
Contact technical teamOur technical team can help you specify RAINCLAD® for your project.
Phone: 020 3949 8826
Email: [email protected]
Locate your nearest Thermawool stockist or distributor for availability and lead times across the UK.
Find a stockistHead Office
1 Bedlam Mews, London, SE11 6DF
Warehouse
Unit 1, Mirravale Estate, Dagenham, RM8 1YY
