40mm Rockwool RWA45 Acoustic Sound Insulation Slab (8.64m2/Pack)

Stone wool insulation slab, measuring 40mm in thickness, designed for use in internal partitions, floors, and roof applications.Manufactured from high-density stone wool, the slab combines excellent acoustic absorption with reliable thermal insulation and inherent fire resistance. Its rigid composition allows a close friction fit between studs or joists, preventing gaps that could compromise performance.Non-combustible and classified as Euroclass A1, the slab contributes to improved fire safety within the building fabric. Its fibre structure also provides effective sound reduction, limiting noise transfer between rooms and floors.At 40mm thick, the slab offers a balance between minimal wall build-up and meaningful acoustic performance. It is often specified in partitions, linings, and ceiling systems where space is limited but higher sound absorption is required than thinner slabs can deliver.