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Below Floorboards Floor Solution

Total Solution Cost:
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Original price
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Discrete Under-Floorboard Solution

Discrete Under-Floorboard Solution

- Soundproofing for under your floor

- Economic and effective underfloor soundproofing

- Triple protection against sound rising from below

- Online calculator will work out your exact requirements

- Soundproofing kit delivered to your door in 48 hours

Our Below Floor Soundproofing Solutions:

Solution: Floor Depth Gain*: Solution Airborne Performance: Typical Airborne Improvement: Typical Impact Improvement:
Solution:Acoustic Mineral Wool + Tecsound 50 Floor Depth Gain*:2.6mm Airborne Performance:50 dB Airborne Improvement:13 dB Typical Impact Improvement:3 dB
Solution:Acoustic Mineral Wool + Tecsound 70 Floor Depth Gain*:3.5mm Airborne Performance:52 dB Airborne Improvement:15 dB Typical Impact Improvement:3 dB
Solution:Acoustic Mineral Wool + Tecsound 50 + Plasterboard Upgrade Floor Depth Gain*:2.6mm Airborne Performance:56 dB Airborne Improvement:18 dB Typical Impact Improvement:3 dB
Solution:Acoustic Mineral Wool + Tecsound 70 + Plasterboard Upgrade Floor Depth Gain*:3.5mm Airborne Performance:57 dB Airborne Improvement:19 dB Typical Impact Improvement:3 dB
*With Tecsound above floor

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.

Why choose a below floor solution?

In a situation where you want a good result with less effort and you can only work beneath the floor boards, we highly recommend our below floor solution. Highly effective against airborne sound, our floor soundproofing incorporates acoustic mineral wool, and a layer of high performance acoustic membrane Tecsound 50. The Tecsound membrane can be applied either above or below the floor boards (or for even better results in both places!).

We can now offer Tecsound 70 which is a slightly thicker and heavier membrane for those who want to maximise performance.

For detailed installation instructions view the Below Floor Instructions.

Dealing with noise from below?

Where noise from below is your problem you should be concentrating on getting the maximum airborne uplift you can. Rubber mats vastly improve impact sound reduction (benefitting downstairs neighbours), they are not as good at reducing the sound coming up. Ensure you are selecting the right solution for your nosie problem.

Plasterboard Upgrade Option

We also offer a plasterboard upgrade, which incorporates further protection in the form of a further layer of plasterboard planc. The addition of the 19mm plasterboard acts like an additional ceiling below your floor. Where possible gaps should ideally be sealed between the floor boards using acoustic mastic. The effect of this shouldn't be underestimated and can often be like closing a door that has been left ajar.

The floor will now have several layers of protection. Acoustic mineral wool, Tecsound membrane and 19mm plasterboard planc, and sealed floor boards. 

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

Tecsound Acoustic Membrane Upgrade

Upgrade your soundproofing solution with the Tecsound acoustic membrane, which delivers an impressive performance boost. It is extremely flexible and improves both airborne and impact passage of sound.

It is a high density, polymer based synthetic soundproofing membrane providing excellent acoustic insulation in different construction elements. It is very flexible and very easy to use, an therefore has numerous applications, whilst also being self extinguishing and fire resistant.

Using an Under Floor Heating System?

You will need to ensure that all the soundproofing products are suitable for use with your specific system as performance differs between them. The Tecsound Acoustic Membrane has a thermal conductivity figure of 0.45 W/mK, please check it’s ok for use with your specific Under Floor Heating system before proceeding.

Tecsound Performance

Tecsound Performance

The performance of the Tecsound Membranes is truly impressive. In fact, it's performance is equivalent to lead of the same surface weight. The Tecsound 50 in a single layer boasts an Rw figure of over 25dB and due its chemical make up it has exceptional damping qualities.

It is these qualities that are normally absent from rigid plasterboard type constructions. This resilience means that it compares very favourably to the likes of green glue, as it not only provides great resilience but it also provides high mass. The membrane has reinforcing scrim on one side and when applying the panels it should be facing you.

More information.....

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.

The total performance which is normally quoted on most sites refers 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.

In simple terms a 10dB improvement equates to a 50% reduction in sound you hear, 20db equates to 75% and 30dB to 87.5%. However this is not the same for all frequencies. This is just an average performance across all frequencies, and higher frequencies will perform better than lower.

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. 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 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.

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 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.

Need help with your soundproofing?

Our team are on hand to answer any questions and give you all the advice you need.

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