// SPEC · Mineral Wool
Rock Wool Board 120 kg/m³ Semi-Rigid Curtain Wall Facade
Rock Wool Board 120 kg/m³ semi-rigid, A1, λ=0.034 W/(m·K) at 25°C. Optimised for unitized curtain wall infill panels, high-rise ventilated facade fire barriers, and structural steel frame spandrel thermal insulation.
// Key Features
- Semi-rigid 120 kg/m³ density resists wind-induced vibration and pressure fluctuation in tall building curtain wall systems
- Complies with EN 1364 fire resistance criteria as a cavity fire barrier preventing flame and smoke spread
- Class A1 non-combustible satisfies high-rise facade cladding fire safety regulations across EU and GB standards
- Low thermal conductivity 0.034 W/(m·K) minimises heat loss through curtain wall panel cavities and spandrel zones
// Technical Specifications
| Fire Class | A1 |
| Binder Content (%) | 4.5 |
| Bulk Density (kg/m³) | 120 |
| Max Service Temp (°C) | 650 |
| Thermal Conductivity at 25°C (W/m·K) | 0.034 |
// Applications
Unitized curtain wall system insulation infill panelHigh-rise ventilated rainscreen facade fire barrier layerStructural steel frame spandrel panel thermal insulationSupport rail rainscreen cladding system thermal backing boardFire-rated glazed curtain wall perimeter cavity seal zone
// Quick Specs
Max Temperature650°C
Thermal Conductivity0.034 W/(m·K) at 25°C
Density120 kg/m³
StandardGB/T 25975
// Get Pricing
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