Johnson’s Insulation Supplies Ltd, Johnson House, 3 Victoria Way, Burgess Hill, West Sussex, RH15 9NF
COLLECTION ONLY FROM BURGESS HILL, 3 VICTORIA WAY, BURGESS HILL, RH15 9NF. CONTACT US DIRECTLY FOR DELIVERY REQUESTS AND COLLECTIONS FROM OTHER DEPOTS
Opt for the trusted Rockwool RWA45
Rockwool RWA45 is a high-density stone wool insulation slab engineered for acoustic performance, with added thermal efficiency and an A1 fire rating built in. Suitable for internal wall insulation builds, floors, partitions and ceilings.Rockwool RWA45 is a high-density stone wool insulation slab engineered for acoustic performance, with added thermal efficiency and an A1 fire rating built in. Suitable for internal wall insulation builds, floors, partitions and ceilings.
As one of the most specified forms of Rockwool acoustic insulation slabs on the market, RWA45 delivers measurable sound absorption across a broad frequency range - making it a reliable choice for anyone who needs acoustic control built into the fabric of the structure.
Why RWA45 is the benchmark for acoustic insulation
When specifying Rockwool acoustic insulation for partitions or separating walls, RWA45 consistently performs. Its high-density stone wool composition absorbs airborne sound rather than simply blocking it, cutting noise transmission between rooms and floors effectively.
Common acoustic applications include:
- Stud partition walls between rooms or tenancies
- Floor and ceiling systems in multi-occupancy buildings
- Timber and metal framed partitions in commercial fit-outs
- Separating walls in new-build residential and mixed-use developments
Whether you're working to Part E building regulations or a bespoke acoustic specification, RWA45 provides the density and absorption characteristics needed to meet performance targets.
Available in thicknesses ranging from 25mm to 100mm, RWA45 fits reliably between studs, joists or battens with no mechanical fixing required. Its rigid slab format makes it straightforward to cut on site, and the friction fit keeps installation clean and efficient.
Non-combustible with an A1 Euroclass fire rating, it holds its shape and performance over the building's lifetime without degrading.
Our signature cut-to-size service and supply across the South East
Orders can be placed for collection from our West Sussex, Hampshire and Kent depots, with delivery available to nearby regions upon request. For specific dimensions or tailored fitment, our cut-to-size service operates only from our West Sussex and Hampshire site locations, ensuring your Rockwool acoustic insulation slabs arrive ready to install.
Johnson's Insulation Supplies has been trusted by the building industry since 1984. Place your order today and our team will prepare it to your exact specification.
Cut to Size
Most orders can be cut and delivered within two days! There’s no dust, No Damage, No Waste… Job done!
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Most orders can be cut and delivered within two days! There’s no dust, No Damage, No Waste… Job done!
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