Rockwool Insulation
Stone wool mineral insulation delivering thermal, acoustic, and fire protection performance in a single material.
Overview
Thermal. Acoustic. Fire. Triple-rated mineral wool.
Rockwool Insulation is a mineral wool insulation manufactured from spun molten basalt rock. Unique in combining good thermal insulation with excellent acoustic performance and Class A1 (non-combustible) fire rating – the only common insulation material that achieves all three.
Standard specification where fire safety is a primary requirement: high-rise buildings, escape routes, fire-rated separating walls, and service shafts.
Key Features
- Class A1 – non-combustible
- Excellent acoustic insulation
- Lambda 0.035–0.040 W/mK
- Vapour-open – does not trap moisture
- Dimensionally stable in fire
- Multiple density grades available
Technical Specs
Technical Specifications
All values measured at 23°C unless noted. Full test data available in the datasheet.
| Property | Value | Unit |
|---|---|---|
| Form | Mineral wool slab or roll | – |
| Composition | Stone wool (basalt fibre + binder) | – |
| Colour | Brown / dark grey | – |
| Density grades | 30 / 50 / 80 / 120 / 200 | kg/m³ |
| Thermal conductivity (λ) | 0.035–0.040 | W/mK |
| Thickness options | 30 / 50 / 80 / 100 / 150 | mm |
| Acoustic absorption (αw) | Up to 1.0 | – |
| Fire reaction | Class A1 | – |
| Melting point | > 1000 | °C |
| Compressive strength | Variable by density | kPa |
| Water absorption | < 1 | % |
| Service temperature | −50 to +250 | °C |
| Vapour resistance | Open | – |
| Standards | EN 13162 · ASTM C612 | – |
Applications
Where this product is used
Six typical site applications where our crews specify this product.
Fire-rated walls
Fire separating walls and compartmentation.
Acoustic insulation
Noise control walls and floors.
High-rise buildings
Façade insulation with fire-safety requirements.
Service shafts
Service shaft and riser fire protection.
Industrial pipes
High-temperature pipe and equipment insulation.
Hotels
Inter-room acoustic separation.
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