Rockwool Flexi Slab is a semi-rigid stone wool insulation board engineered for timber frame construction and cavity wall applications. With a thermal conductivity (lambda) of 0.037 W/mK, it delivers excellent energy performance whilst maintaining fire classification A1. The product provides superior acoustic damping and moisture management characteristics essential for building envelope performance.
Key Features
- Thermal conductivity: 0.037 W/mK for optimised energy efficiency
- Fire classification: A1 non-combustible rating
- Semi-rigid format allows cavity and stud bay installation without additional fixings
- Vapour open construction supports moisture regulation in timber frame systems
- Pack quantity: 12 slabs per bundle (400 x 1200 x 50mm)