Rockwool RW3 30mm
Performance: Will vary due to featuring in acoustic systems.
Dimensions: 1200mm x 600mm x 100mm
For: Homes and workplaces.
Compliance: Compliant with both Part E Building Regulations (England, Wales, Northern Ireland and the Republic of Ireland).*
Installation: Will vary depending on which system it features.
Where: Wor all cavities found between floor joists, stud frame walls and ceilings.
Universally recognised throughout the world of soundproofing, commonly used as part of an acoustic system, or combined with additional acoustic materials such as our MuteClip®. There is currently a shortage on Rockwool RW3, RWA45, Knauf RS60 and RS45 within the UK, please do contact do office before orders so we can indicate stock availability.
Specialist Acoustic Mineral Wool for Part E Building Regulations Compliance
Rockwool PROROX SL930 Acoustic Mineral Wool (RW3) (60kg per m3) is high-density acoustic mineral wool that is used to treat the ‘open spaces’, or cavities, between flooring joists, stud-frame walls and ceilings. It is an open-fibrous material that when sound comes in to contact with, turns that sound energy into heat, essentially reducing the sound. Although, it is not used as a standalone and should always be used as part of a system where these open spaces exist.
Acoustic Mineral Wool helps to prevent Flanking Transmission through the open cavities, and the sound amplifying. Any acoustic system fitted without it will not achieve its full acoustic performance and may fall short of expectations.
Acoustic Mineral Wool has a greater density than thermal wool comparisons which is evident in their slab appearance, the reduction in acoustic insulation for this material in the form of an NRC (Noise Reduction Coefficient) which differs for each thickness, what this essentially means is that it is an absorptive material as opposed to a dense, heavy soundproofing product. You will find all acoustic systems that Acoustic Mineral Wool is featured in, which there is most, by selecting the ‘Systems’ tab above.
- Essential for all soundproofing systems with joists or stud-frames.
- To be used in cavities to provide optimum soundproofing performance for all systems
Slab dimensions 1200mm x 600mm x 100mm (4 per bale – 2.88m2)
- Other thicknesses include; 75mm, 50mm and 30mm
- Euroclass A1 fire rating
- Always leave an air gap to ensure full performance a minimum of 10mm
- A 3-5 day lead time can be expected with Rockwool, please call ahead for availability
Rockwool RW3 Pack Quantities
- 4 Slabs (2.88m2)
- 6 Slabs (4.32m2)
- 8 Slabs (5.72m2)
- 15 Slabs (10.8m2)
Acoustic Mineral Wool is fibrous and will release fibres into the room when exposed, and it should only be placed in cavities and generally is not recommended to use as an exposed sound absorption material for this reason.
We offer a comprehensive range of sound absorption range that can are available in an almost unlimited range of possibilities across a broad range of colours.
Although acoustic insulation used here is not toxic or hazardous, when installing it does release small dust particles, so do use gloves, goggles or face mask.
Measure the depth of the cavity first, or if you know the stud depth you are using, make sure that you choose a depth of Acoustic Mineral Wool that allows for a 10mm air gap on either side.
The reason you leave this air gap is to avoid compressing the fibrous properties between the two partitions you are soundproofing, for example, do not use a 100mm depth in a 50mm gap.
Acoustic Mineral Wool is easy to cut with large scissors, or we found a bread knife to be a great tool here.
Cut the slab a little larger than the stud or joist gap to friction hold, or use a form of wiring to hold it in place.
Sound insulation advice for Part E