140mm Rockwool Flexi Acoustic Sound Insulation Slab (2.88m2/Pack)

Stone wool insulation slab, measuring 140mm in thickness and cut to 1200 × 600mm, for use in partitions and floors.With a patented flexible edge, it securely friction fits within framed constructions, reducing the need for excessive cutting and limiting waste on site.In a single solution, it provides reliable acoustic absorption, effective thermal insulation with a conductivity of 0.038 W/mK, and the highest level of fire safety (A1 non-combustible).Its semi-rigid form allows straightforward handling and installation, while maintaining a close fit to minimise gaps that could compromise performance.At 140mm thick, the deepest slab in the Flexi range, it offers the highest levels of acoustic and thermal performance. The additional depth enables superior airborne sound reduction between rooms and floors, while further improving energy efficiency by reducing heat loss through the building envelope.