All our Floor solutions:    |   SBX Floor   |   6mm Acoustic Mat   |   Monarfloor   |   Below Floor Soundproofing   |   Absorbalay IMPACT   |   Replacement Soundproof Chipboard Floor   |   SIF Under Floor Hangers

SBX boards - Acoustic floor insulation

SBX boards - Floor solution 4

SBx Boards are our most effective solution when looking for ease of fit (no need to lift floorboards)

They are effective in:
  1. Blocking airborne noise rising from below ( and from your room to the room below) - be aware they are far more effective than rubber mat solutions for this purpose which typically offer only 5dB of airborne protection.
  2. Decreasing your impact sound experienced to the room below.
  3. Improving the acoustics in the soundproofed room.

The unique fluted inner core of SBx boards allow "give" while maintaining its shape. This award winning German design means that the board can be used as a rigid surface that will still reduce impact sound considerably.

SBx Boards are very simple to install with the boards simply being laid butted together on the floor beneath a carpet, tiles, floating floor or laminate. For a full description of the boards see SBx boards on our products page. We are of the opinion that the SBx boards offer the best performance to thickness ratio of all above the floor soundproofing products, outperforming heavy rubber mats when stopping sound rising.

Soundproofing and tiling bathrooms/kitchens

A common problem in bathrooms is wanting to reduce impact sound and still have tiles. The SBx boards means you can tile and still reduce impact sound. We don't know of another product that provides the necessary rigidity to tile over, while still providing impact sound protection

SBX Soundproofing - How it works

The SBx board is a silica filled board that works more effectively than just simply adding more mass to the floor. Conventional wisdom states that as you increase the mass of the dividing structure you improve the soundproofing. However simply adding more mass runs into the law of diminishing returns. The beauty of the SBx board is that the material in the core is loose and arranged in an irregular fashion. This irregularity and looseness disrupts the passage of sound more effectively than the dead mass of rubber or solid boards.

For customers wishing to further enhance the performance of SBx boards as a simple lay over the floor solution we can highly recommend the Tecsound 50 membrane , a heavy and high performance membrane which is excellent for reducing airborne sound penetration.

For customers looking to insulate noisy pipes please see our acoustic pipe wrap.

Sound proofing basics

When it comes to soundproofing your floor , it is important to establish what you are trying to achieve. Are you trying to stop noise from below reaching you, or are you trying to eradicate your impact noise passing down to your neighbours?

In practice, most people are aiming at stopping the sounds from below traveling upwards. Many products on the market boast great soundproofing credentials (particularly rubber mat or underlay solutions) but the figures quoted are almost always referring to a reduction in impact sound and are of very little use in identifying how much airborne sound is being reduced.

Understanding Performance

At the foot of the page you will see a performance table.

The total performance which is normally quoted on most sites refers to impact sound only. However, if you are worried about sound rising from below you should only consider the airborne sound number (which is rarely quoted)

We also give an indication of acoustic performance uplift. Remember that every 10dB of performance uplift corresponds to roughly a 50% improvement in the performance of the floor. So 20dB would indicate a 75% Improvement over and above the original floor.

A very important note on getting the right product.

As a consumer comparing different products from different companies is very hard.

While we talk about improvement in decibels in all our tables many other companies will state a single figure for their products which is often in excess of 40 or even 50db. It is really important to understand that these figures invariably refer to the performance of a whole floor / ceiling structure, and this will include a standardised floor and ceiling that will already be quite well soundproofed. There is no single product in existence, to our knowledge that will provide in excess of 40 dB when added to a standard floor ceiling divide ( plasterboard ceiling and wooden floor).

In an attempt to level the playing field, we are taking a standard ceiling; 12mm plasterboard, a void and 18 mm floor boards as our case study. We believe that this has an acoustic performance of about 34 dB Rw ( airborne). The final column of our table gives an indication of what we believe our system might achieve in Rw ( simple airborne performance) terms.

An important word about regulation E (the sound test required for conversions). We have a dedicated regulation E web site The figures in the above tables do not take into account Ctr corrections so do not attempt to create an off the shelf solution for regulation E.


More info when making a comparison of our products with others:

Please note that the figures that we provide refer to improvement over the average floor as opposed to the performance data of the product in isolation (typically this is impact sound numbers).By this we refer to products that can be lab tested in a way that the product is tested on its own, which can give little indication how it performs in situ,(i.e. on your floor)

This is a very important distinction to understand and is confusing to a lot of people. Almost all of our competitors will state the performance of the product either in isolation or include the existing floor construction within their numbers. This will exaggerate the true benefit of their products. This is particularly the case with laminate underlays.


Key Points:

  • A slim fitting floor soundproofing solution
  • Fast, easy and effective floor soundproofing
  • Award-winning German engineered silica filled panels
  • Online calculator will work out your exact requirements
  • Soundproofing kit delivered to your door in 48 hours

Soundproofing a floor with SBX boards

Soundproofing a floor with SBX boards


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SBX Floor Sound Insulation performance table

Floor Depth Gain Total system Performance airborne Typical Airborne Improvement Typical Impact Improvement
15mm 43dB 17dB 19dB
SBx Boards + Acoustic Mineral Wool 15mm 48dB 20dB 20dB
SBx Boards + Acoustic Mineral Wool Tecsound 50 upgrade 17.5mm 51dB 24dB 22dB
SBx Boards + Acoustic Mineral Wool Tecsound 70 upgrade 18.5mm 53dB 26dB 23dB
SBx Boards + Tecsound 50 17.5mm 48dB 20dB 21dB
SBx Boards + Tecsound 70 18.5mm 49dB 21dB 22dB
SBx Boards + Tecsound 100 20mm 50dB 22dB 23dB
SBx Boards + Acoustic Mineral Wool Tecsound 100 upgrade 20mm 54dB 27dB 24dB

Compare all our floor solutions here.

*Please note figures stated for total system are based on a a timber joist ceiling floor construction with 200mm joist. The figures are Lab figures and are Ctr corrected. So are not comparable to regulation E Systems. The improvement figures state improvement over a regular timber floor and plasterboard ceiling.

Solution Reviews

When all else failed this did the trick

Really delighted with the SBX board. We had a problem floor and we had spent a lot of money on trying to have it soundproofed. We went for the belwo the floor solution using 100kg density mineral wool, called desne fibre matting. We had added plasterbaord belwo the floor as well. After the job we were dissapointed. We phoned SoundStop and they were worried bout a steel in our floor which might be allowing all the noise to falnk up thought the steel. This meant that all our efforts felt a bit wasted. We took the plunge and as a last ditch wenht for the Tecsound and SBX board. The differene was amazing. I wish we hadnt bothered with all the mess and hassle of the first solution. The nosies which we had been hearing such as counghing and talking were eliminated. WThe product performed beyond our expectations. Thanks Soundstop
Reviewed by:
4th Jan 2018

Good Product

Easy Installation, For the product..
Reviewed by:
8th Sep 2017

Excellent product

Easy to use! We had various problems with noise coming from below. We had tried various solutions . As a last resort we tried the SBX board and it did what all the other things had failed to do. That was to stop the noise from below.
Reviewed by:
8th Sep 2017

Super Product

Excellent product to use
Reviewed by:
8th Sep 2017

Surpisingly good

Our expectation for the product was quite good given the reviews we had read but we were surprised at how effective they were. We had orginally tried to sound proof our floor with mineral wool belwo the floor boards. ( Not from soundstop). The results were not great and we were informed we had probably used the wrong density. I decided I could not face lifting floor boards again. We went for a combination of Tecsound and the SBX baords. We are really pleased with the result. I would say it has eradicated all TV noise and normal conversation. Loud music does penetrate at the bass end of the frequency scale but the result is so much better.
Reviewed by:
30th May 2017

Quick and Easy

We are happy with the product. We failed our soundproofing regualtion E test by about four decibels. We added the product and passed easily. Pleased with fitting time and end build quality
Reviewed by:
AshoK Shah
5th Apr 2017


Great Product. Thanks
Reviewed by:
8th Mar 2017

Good Product Depsite leaky board

The product did the job well. It was a bit messy cutting the boards and a couple arrived with sand leaking from them. I think these might have been handled badly in transport. Once we understood how to cut and tape the boards the job was relatively straighforward.A video would help!
Reviewed by:
2nd Feb 2017