Rockwool RW3 is a rigid stone wool slab insulation delivering thermal performance with a lambda value of 0.035 W/mK, suitable for timber frame and cavity wall applications. This 4-pack comprises slabs of 100mm thickness with dimensions of 1200 x 600mm per unit, providing 2.88m² coverage with excellent fire performance and moisture management characteristics.
Key Features
- Lambda value: 0.035 W/mK for high thermal efficiency
- Fire rating: Euroclass A1 non-combustible stone wool
- Dimensions: 100mm thickness, 1200 x 600mm per slab (4 slabs per pack)
- Vapour permeable with superior moisture control and drying capability
- Suitable for timber frame construction, cavity wall fill and thermal bridging applications