40mm Rockwool RW3 Acoustic Sound Insulation Slab (7.2m2/Pack)

Stone wool insulation slab, measuring 40mm in thickness and cut to 1200 × 600mm, for use in partitions, ceilings, and floors.Manufactured at a density of 60 kg/m³, the slab combines dependable acoustic absorption, effective thermal insulation, and inherent fire resistance.Its semi-rigid composition ensures straightforward installation, while maintaining a close fit to limit gaps that could compromise performance.Non-combustible and classified to the highest fire safety standards, the slab contributes to enhanced fire protection within the building fabric. Its fibre structure also provides airborne sound absorption, improving acoustic comfort between rooms and floors.At 40mm thick, the slab delivers greater acoustic and thermal performance than thinner options, while still offering a relatively slim profile.It is well suited to applications where space is limited, but improved sound control, energy efficiency, and fire resilience are required.