Rockwool Flexi Slab is a semi-rigid stone wool insulation product delivering thermal performance with excellent fire protection characteristics. With a thermal conductivity (lambda) of 0.037-0.040 W/mK, it provides efficient energy performance across timber frame and cavity wall applications. The product combines vapour permeability with structural stability, making it suitable for both horizontal and vertical building elements.
Key Features
- Thermal conductivity: 0.037-0.040 W/mK for optimised U-values
- Non-combustible A1 fire rating with enhanced fire barrier performance
- Vapour permeable with excellent moisture management properties
- 400mm x 1200mm x 100mm format - 6 slabs per pack for simplified installation
- Suitable for timber frame, cavity walls and suspended floor applications