Description

Rockwool RWA45 50mm Insulation 600x1200mm 6.48m2

Delivering a robust solution for thermal, acoustic and fire performance, the Rockwool RWA45 50mm slab is designed for use in partition walls, ceilings, floors and roofs. With dimensions of 1200 mm × 600 mm and a pack coverage of approximately 6.48 m² (9 slabs per pack), the slab is easy to handle and fast to install.

Constructed from stone wool (rock mineral wool) at a density of 45 kg/m³, this insulation slab achieves a thermal conductivity of 0.035 W/m·K. Its non-combustible nature (Euroclass A1 to BS EN 13501-1) makes it suitable for applications where fire performance is critical.

The RWA45 range is water-repellent, contains no CFCs or HCFCs, and maintains its structural and thermal integrity over time. Whether used in stud walls, separating walls, floors or roof structures, this slab is designed for durability and multi-application capability.

Key Features

• Thickness: 50 mm

• Slab size: 1200 mm × 600 mm

• Pack coverage: ~6.48 m² per pack (9 slabs)

• Density: 45 kg/m³

• Thermal conductivity (λ-value): ~0.035 W/m·K

• Fire rating: Euroclass A1, non-combustible

• Multi-application: internal walls, separating floors, ceilings, timber or steel frames.

Benefits

• Thermal efficiency: Offers solid insulation with reliable performance.

• Acoustic performance: The fibre structure helps to reduce sound transmission through partitions and floors.

• Fire safety: Non-combustible slab adds fire protection within structures.

• Ease of installation: Semi-rigid and easily cut to size for faster fitting.

• Long-term durability: Retains performance over time and is water-repellent.

This product is available in other sizes which can be found here.

If you require an extremely high performing, easy to handle multi-application insulation, this product is perfect for the job. If you require a high volume of this product – please contact us for a quote.

Contact us today for more information on 0113 204 7303 or contact us here.