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Rockwool RW3
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Rockwool RW3

Product Code: 401982

Eight slabs of 1200mm x 600mm x 50mm rock wool.

£42.77 (INC VAT)
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  • Description
  • Reviews

Rockwool RW3

**Please note new dimensions - 8 slabs per pack, approx 1200mm x 600mm x 50mm**

Rockwool RW3 rock wool is an insulation material that is used in the construction of buildings and interior acoustic treatment. The RW3 rock wool can be used to reduce the transmission of noise from external sources and can be used as a material to build acoustic panels if treating the interior of a room.

The below table shows the absorption at each frequency band. The values range between 0 and 1, representing how effective the RW3 rock wool is at absorbing sound within each band.

A value of 0 represents very little absorption and a value of 1 represents complete absorption.


125Hz 250Hz 500Hz 1kHz 2kHz 4kHz
0.11 0.60 0.96 0.94 0.92 0.82


Fire Classifications

RW3 Rock Wool achieves an A1 Classification in accordance with European Standard: EN 13501-1.

The A1 classification complies with the definition of non-combustible, and is in accordance with all UK and Ireland Building Regulations.


Health & Safety Instructions

While rock wool does not have any permanent health risks, this product is an irritant and protective clothing should be worn at all times while using the rock wool.

We recommend that customers should cover their skin, eyes and mouth when using rock wool, but please consult with a professional before using this material for the first time, or if you are unsure.

Where possible, prevent particles from becoming airborne, either by constructing acoustic panels in well ventilated areas, or by using a filter for the air when in an unventilated area.

Customer Reviews
  • Verified Customer
    on 06 August 2014
    Best product for diy acoustic panels as it's stiff so you can glue auralex foam direct to it. There are cheaper sources out there (builders merchants, inulation specialists etc) but I needed a small quantity inc. delivery - it comes in an enormous box! Quick, efficient service from Studiospares
  • Verified Customer
    on 27 November 2013
    Easy to cut but do wear breathing and eye protection.
  • Verified Customer
    on 29 August 2013
    These work well. Although i wouldn't buy them from here, since Building Supplies Online sell them at £20.76 (same 8 pack, 50mm etc) but yeah, sorted reflections and cut to superchunks for my corners. My rooms frequency balance is 1000% improved!
  • Verified Customer
    on 19 February 2013
    Used to line a guitar isobooth and works perfectly. Wasn't too bad to work with, just took a little care and attention. I'll probably use the left overs to improve my room acoustics a little.
  • Verified Customer
    on 07 October 2011
    I bought this in order to make some acoustic panels to kill first reflections. Its done a great job and my monitoring situation is much better as a result. This was the cheapest rock wool I could find! I got a lot more than I needed but then that's no bad thing!
  • Verified Customer
    on 11 September 2011
    The best results for absorbing high and mid frequencies. Works best installed in a wooden frame, covered with acoustically transparent fabric and installed spaced away from the wall. It's messy and itchy if you get it on your skin but the end results are always impressive. Good for installing at reflection points around studio monitoring. Studiospares seems to be cheaper than the local DIY store equivalent.

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