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£29.00 (Excluding VAT) Price promise
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 on 01937 588 226 before orders so we can indicate stock availability
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.
|4 Slabs (2.88m2)||6 Slabs (4.32m2)||8 Slabs (5.72m2)||15 Slabs (10.8m2)|
|Fire rating||Euroclass A1|
The world of soundproofing and general construction presents an uncertain journey for those arriving fresh to the subject, there maybe terminology or use of acoustic testing figures that could appear confusing, and even if you are at a professional level, it is good to brush up to make sure you are making the right choice. We want to help you come to the right decision, so whether this is through the use of our guides or talking to a member of our team - we are here to help!
A combination of the following will always result in a much improved acoustic performance.
To create a soundproofing system that can reduce an extensive range of sounds and noises, you will need to combine all of the properties above. By separating the mass from the structure and suspending it away, you are breaking contact with the construction and creating an air gap, in this air gap must feature Acoustic Mineral Wool, as it is essential for reducing Flanking Transmission, and reducing any sound making it into the cavity. Low-frequency noises and vibration are not just created in areas with amplified music or machinery, but can originate from televisions attached to the wall, or the low-tone of a male voice and even closing a door - these noises often travel greater distances than you'd think, and will also on occasion, lead to Flanking Transmission. We recognise the subjective nature of sound and how we react to each one, and that is why we offer so many variances in our systems. We understand that it is not always possible to incorporate significant losses of space with say, the introduction of a stud frame, so we provide different variances to suit what performance you need, your budget and thickness.
Ready to see what options you have available? Select our 'Featured Systems' tab and on any system to learn more about each of their acoustic performances, overall system thickness and in what scenarios you can apply them to. You can then add all featured components to the cart in a press of a button!
Whatever the scenario, come and speak to our team on 01937 588 226.
This product is part of the following systems:
60kg is not the weight of each slab nor the weight of a single bale, but the density of the product when measured in cubic meters. It is a reasonably lightweight sound insulation material which is easy to cut and easy to lay, it is recommended to use gloves and eye protection during the fitting and keep the area ventilated during and after installation.
The 75mm thickness is best used as stud wall insulation, between flooring joists or in flooring frameworks to prevent cavities from resonating, leaving them untreated can lead to the remaining sound passing through into these areas and bypassing the soundproofing. You will also want to avoid using a thicker size than the air gap provided and aim to have at least a 10mm air gap - using a 100mm thickness in a 50mm cavity, for example, will lead to compression of the acoustic mineral wool and a direct path of sound to travel through - degrading the performance of the sound proofing system.
When installing sound proofing systems over timber or metal frameworks, flooring joists and the suspension of materials like in our MuteClip System, Rockwool acoustic mineral wool is used to treat all cavities to reduce sounds from entering them and reflecting around inside them, this often causes problematic resonances which would appear to have a boom-like sound. It is important to note that this is a lightweight, fibrous material and this means that sound will pass through it - so it is not effective in reducing airborne nor impact noise issues as a standalone material.
Acoustic Mineral Wool is fibrous and will release fibres into the room when it is exposed, which is why it is only placed in cavities and generally not recommended to use for this reason.
We offer a vast range of highly creative sound absorption solutions in a variety of colours and 3D structures that can we can tailor to your existing or proposed space.
Soundproofing products act as a barrier to decrease sound transferring from room-to-room. Sound absorbers absorb the sound within a room and assist in reducing room reverberation etc. Absorbers do not prevent the sound leaving the space but will lower it somewhat. If you want to soundproof a room, you would have to buy soundproofing products. It may also be worthwhile to think about some absorbers inside the room to help reduce the sound before it hits the soundproofing.
The fibres found in Rockwool can cause slight irritation to the skin; those with sensitive skin may experience a mild itching appearing while installing, we recommend the use of gloves and protective eyewear.