Class A Fireproof Rock Wool Board – 120kg/m³ / 140kg/m³ for Exterior Wall Insulation
Specially engineered for external wall thermal insulation systems (ETICS), our Class A fireproof rock wool slab is available in 120kg/m³ and 140kg/m³ densities. Manufactured from high-quality basalt through advanced melting, fiberizing, and curing processes, these boards deliver exceptional energy efficiency performance, Class A non-combustibility, excellent tensile strength, and long-term weather resistance.
With density options tailored to different climate zones and structural requirements, they help meet national energy-saving standards while optimizing material thickness, reducing structural load, and controlling project costs.
- 120kg/m³ Rock Wool Slab: Ideal for cold climate zones, where thinner insulation layers can meet energy standards—reducing wall load and enhancing safety for high-rise buildings.
- 140kg/m³ Rock Wool Slab: Suitable for hot summer and cold winter regions, offering balanced insulation thickness and performance for public and residential projects with high fire and durability demands.
| Parameter | FR120 | FR140 |
|---|---|---|
| Density (kg/m³) | 120 | 140 |
| Tensile Strength (kPa) | ≥7.5 / 10 | ≥10 / 15 |
| Thermal Conductivity (W/m·K, 25°C) | ≤0.038 | ≤0.040 |
| Combustibility | Class A1 non-combustible | |
| Acidity Coefficient | ≥2.0 | |
| Hydrophobic Rate (%) | ≥99.0 | |
120kg/m³ products achieve required energy efficiency in cold regions with thinner insulation, minimizing structural load and safety risks. 140kg/m³ provides optimal insulation thickness for mixed climates, balancing performance and cost-effectiveness.
100% inorganic fibers with a melting point above 1000°C: non-combustible, no toxic fumes, and no molten droplets—effectively blocks fire spread.
High vertical tensile strength ensures secure bonding with the substrate, reducing the risk of insulation detachment and ensuring long-term facade safety.
High acidity coefficient guarantees durability in humid, acidic, or alkaline environments—no dusting, no collapse—ensuring the insulation system remains effective long-term.
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