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Wall Soundproofing Solution 4

"Stick on" soundproofing with SM20 panels


Soundproofing a wall with Sm20 panel      
  • A slim fitting wall soundproofing solution

  • A very DIY-able stick on Solution

  • Rubber panels and plasterboard finish just 45mm thick

SM20 Soundproofing - How it works

The SM20 panel system is a high performance wall soundproofing solution aimed at those who want good acoustic performance. Unlike other solutions this dense recycled rubber is easy to fit and will provide a reliable soundproofing barrier.

The system is straightforward to fit. The high density recycled rubber panels are simply cut to size and stuck to the party wall covering the whole offending surface. We provide the necessary proprietary adhesive .The wall is finished off by adding two layers of acoustic plasterboard.

If you wish to calculate or buy the materials just click on the blue calculator. Our delivered solutions come with all the necessary parts to complete a DIY soundproofing job. For more detailed instruction simply click on the fitting instruction link.


Calculate your soundproofing costsSoundproofing fitting instructions


Sound proofing basics

Successful soundproofing of a wall involves improving three key elements.

1) The weight of the wall- This is normally achieved by adding heavy things like acoustic plasterboard. High density products are important too.

2) The springiness or "resilience" of the wall-. Without this, the addition of the mass will have very little impact. The Sm20 acts as resilience and mass. A common mistake is to just add acoustic plasterboard direct to a party wall. This will have virtually no effect

3) The sound absorption of the wall. Most walls have little in the way of absorbancy. The heavy rubber layer of the SM20 solution acts to "trap" sound in the wall.

SM20 noise insulation panels take advantage of advances in acoustic control technology to strike a highly effective balance between increasing the mass of the transmission wall via the heavy rubber and heavy plasterboards and introducing a dampening spring element of the rubber mats.

Understanding Performance

A performance table is shown to the right.

A great del of confusion is created on many sites when referencing to performance. The total performance which is normally quoted on the majority of sites refers to the performance of an average wall with soundproofing materials added. The draw back of this is that you don't really know the impact of the soundproofing you are adding.

For this reason we also give an indication of acoustic performance uplift. For every 10dB of performance uplift there is a correspondent improvement of about 50% in the performance of the wall. A 20dB should provide a 75% improvement over and above the original wall.




Soundproofing Performance

Room Size Loss Total System Performance* Performance Uplift over typical party wall

Genie Clip Wall (independent)

Genie Clip Wall (independent) + Tecsound 50


Independent Wall Resilient Bar

59 dB
22 dB

Independent Wall Resilient Bar + Tecsound 50


SM20 Panels

Super Slim Wall * ( Estimated figure)

Stud Wall Soundproofing

* Total system performance is an attempt to give the performance based on application to an exiting plastered single skin brick wall. Improvements are over this basic starting point. A correction factor of ~5dB is applied to take account of bass frequencies within total performance.




Can I upgrade this system further

As with many solution there is a possibility of an upgrade to this system for those who wish an even higher levels of soundproofing. By adding SBX boards to this system you will further improve the performance particularly from a bass sound perspective. The SBX board brings an almost unique property in an acoustic board in that it has virtually no resonant properties. Read more -Why the SBX upgrade?

Electrical Sockets

If you are thinking of refitting electrical sockets back into the wall. you might be advised to line your electrical boxes with our acoustic putty. Remember a 1% hole in your soundproofing surface can reduce performance of your soundproofing by up to 10%. Lining your plug sockets will go some way to reducing this leakage.

acoustic putty    

Dry lining SM20 Wall to a smooth decorate-able finish

We are often asked what is the final finish and do I need a plasterer? We provide all the materials necessary to achieve a smooth decorate-able finish. Please see video below on dry-lining. The wall you end with will be similar in appearance to the video. We supply the finishing compound that allows you to achieve a smooth wall without plastering. All items are automatically added when you press the blue calculator.


Some Important Notes

The best results for the SM20 system is achieved with solid brick party walls. Breeze block walls may suffer from flanking transmission problems so any soundproofing treatments require an assessment of this possible difficulty Flanking Transmission problems.

The insulation is highly effective where space is at a premium as for a small loss in performance a single layer of plasterboard can be applied. Where the system as shown in the diagram to right is employed the performance of the single skin brick wall is in excess of 48dB Dnt, W +CTr which exceeds Part E party wall sound proofing requirement.
A note on fireplaces: We are frequently asked whether it is necessary to run wall soundproofing around the chimney breast on a party wall? While there is no definitive answer on this question, we are of the opinion that soundproofing the alcoves either side is usually sufficient. This is because chimneys are typically constructed to be fire and smoke proof and are at least of double brick construction, whereas the walls either side, the alcoves, maybe poorly constructed and of single brick. Of course there are exceptions, but in the majority of cases you can reduce your labour and time considerably by just doing the alcoves. Due to the acoustic nature of stud walls and timber framed walls we would recommend a different set of treatments when upgrading these walls as described in solution 5 stud wall soundproofing. Example results based on typical party wall construction of 100mm brick wall (38-43dB)

Advice on finding a fitter



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Customer Reviews  
Items 1 to 4 of 16 total.

08 September 2017

Good Product
Hi this was a good product to install and did a good job at soundproofing. The delivery was much heavier than I anticipated as the acoutic plasterbaords were heavier than I thought. Soundstop aplogised but I am a pensioner!

05 September 2017

Privacy restored
Thanks to you soundstop. We spent a long time researching different products on the internet. Our problem was noisy dogs next door who whined and barked all day. We fited the Sm20 panelos in just one day and are really pleased with the results. Mark was very helpful with our problem.

Soundstop Says
Thnaks very much for your kind words.

Freddy Hoskins
05 June 2017

Easier to fit than I thought
Goods arrived on time. Fitting was actually easier than I thought it was going to be. Although there was a fair bit of hassle getting the old skirting board off. We got the SM20 panels up on the first day ( two alcoves). And then did the plasterboards a couple of days later. We are really pleased with the result and acheived what we wanted.

Shirley and Robert
05 March 2016

1970\'s Semi Detached
1) Outline the problem? "Our problem is a very deaf neighbour, resulting in us suffering, over a long period of time, from having to listen to the sound of high volume TV programmes, loud voices and banging of internal doors etc through the brick party walls of the adjoining property. We used to have to watch the same TV programme as our neighbour as we could view our mute set and listen easily to the sound from next door !!." 2) Ease of fitting "My husband and his brother (both approaching their 70s in age) fitted the recesses of the adjoining wall with resilient bars, acoustic wool and acoustic plasterboard, and the chimney wall with 52mm SM20 Panels. The whole job took two days and both men found the materials easy to work with and the instructions easy to follow." 3) The end result, did it cope with the problem what can you hear now? "What an amazing difference this has made!! I can now sit in my own lounge and read a newspaper or watch TV in peace, something I haven't been able to do for over 8 years. We no longer know which programme our neighbours are watching or if they have friends or relatives visiting and we feel so relieved to have our lives back again. Now and again there is a slightly muffled TV sound penetrating through to our side of the wall but this is completely bearable and nothing at all like the mental torture we have suffered previously."

Acoustic Control :: Sound Insulation :: Domestic Soundproofing:: DIY Soundproofing