MuteMat® USP 625-17 Concrete Underscreed | Floor Soundproofing

Our best performing pimpled concrete under screed for best protection against impact and vibration by floating the screed finish. For noise-sensitive areas including industrial and gym use.

  • Airborne: Not Measured
  • Impact: Up to 28dB (reduction)
  • ££££
  • 17mm
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MuteMat® USP 625-17 is our most robust and most effective pimpled acoustic under screed for soundproofing concrete flooring between the structural concrete slab and floating screed. Its high recycled content helps to reduce the carbon footprint while still retaining a consistent density, this assures that our material's acoustic performance and it's longevity is upheld without fluctuation or fault.



  • Easy to install, roll out and tape joins.
  • A moisture-resistant sheeting may be required during installation.
  • Up to 28dB for impact* (details are available on the 'System Performance' tab above).
  • Compliant with both Part E Building Regulations (England, Wales, Northern Ireland and the Republic of Ireland) and Building Standards Technical Handbook 2017 for Scotland for impact transmission. (Details are available on the 'System Performance' tab above).


For optimum acoustic performance, installation with our MuteClip® System variations are recommended on adjoining ceilings to improve both impact and airborne noise


At iKoustic our team can help you from start to finish, and with the use of our MuteMat® USP 600-17, we can provide Acoustic Modelling Data to estimate results, and can provide fantastic rates on those projects so that you feel the right choice has been made. We also provide Acoustic Testing for existing structures as well as Part E Building Regulation testing and another specialised acoustic testing for projects that include, Gyms and Nightclubs or even residence that require or seek increased acoustic performance for improved living quality.


MuteMat® USP 625-17 is part of iKoustic's MuteRange core - these are products that been subjected to stringent testing in both laboratory and real-world environments providing the best possible solution for the purpose with a result you can trust.


You can find out more about our all-encompassing MuteRange by clicking on the icons below or get in contact with iKoustic today.



A Guide to Soundproofing a Floor

If you are uncertain of what to look for when soundproofing a floor, you can read our handy guide - A Guide to Soundproofing a Floor by clicking on the icon below. You can also pick up the phone and say hello to find out how we can help you on - 01937 588 226!



Making sure you are prepared

  • If using after freshly poured concrete/screed, please allow the subfloor to cure before laying to avoid any complications with the installation.
  • Installation of Perimeter Flanking Band around the perimeter to reduce transmission of impact noise into adjacent walls
  • Loss of space 17mm


Alternatively, we provide Acoustic Installation across the UK to fit all of our systems - they come with a wealth of experience in the field so you can feel comfortable that the right installation methods are being carried out. 


Contact us | 01937 588 226


*Our Typical Performance Results and Noise Reduction Guidance are provided to indicate the results that have been achieved in previous tests but are not guaranteed to a specific site as multiple factors can affect this.

We endeavour to display the most up to date testing and to manage expectation as best as possible, and please do contact us to discuss your requirements


Typical Performance Results*

ΔLw (Impact Reduction)



Compliance with Part E Building Regulations and Scottish Building Regulations


  • When installed under the correct guidance this system is compliant with the required acoustic values for impact transmission featured in Part E Building Regulations; these are applicable across the UK, excluding Scotland (England, Wales, Northern Ireland) and the Republic of Ireland. We would advise conducting a Sound Test to survey any planned conversions in existing properties before concluding on an Acoustic System.
  • It is also compliant with the required acoustic values for impact transmission featured in the Building Standards Technical Handbook 2017 for Scotland, we would advise conducting a Sound Test to survey any planned conversions in existing properties before concluding on an Acoustic System. Scottish Building Regulations contain higher targets than that of Part E, and our Legal Requirements section has the required acoustic values.

  • For additional guidelines and requirements for non-residential buildings; for example, Gyms, Nightclubs and Industrial focused purposes, please do contact us so we can discuss your available options.

As our most healthy option of the MuteMat® USP range, its design follows the same trends of using a deviated pimpled structure to limit direct contact from the floating screed above to the structural concrete. What this means is that the impact transmission and structural borne vibration found in a range of applications is reduced by a substantial amount, and from this separation comes the addition of reducing airborne noise transmission, especially in the problematic low frequencies. MuteMat® USP 750-10 is ∆Lw = 28dB, and this will vary depending on your structural concrete and your screed finish. Both MuteMat® and screed will require abutting to the perimeter edging strip detail on each edge of the room to prevent direct contact with the walls and the causation of Flanking Transmission.

Being compatible with all types of structural concrete found today: block and beam, precast and cast in-situ make it an excellent option for both retrofits and new build structures. No bonding is required to the substrate with each coming in a 1x1 meter slab for ease of carrying and only needing tape to bond them together.

It all rests on what your property contains, whether its residential to where everyday household noises are expected, or in a manufacturing plant to where heavy machinery and the generation of low-frequency vibration is expected in which would usually crack and dislodge a thin screed layer. Our test data for compression sets are found on the Related PDF tab under product data. It is generally recommended, but again would need confirming by a screeding or structural engineer, that residential structures opt for a screed layer between 50-65mm.

Manufacturing and engineering environments, as well as testing facilities to where all harbour forms of sizeable mechanical equipment which can generate excessive noise, mainly low-frequency sound energy - would become problematic for not only for noise sensitive structures adjacent in the immediate area, but also those from some distance or internal noise issues where control of sound is required to safe levels. It is vital in these environments to create suspension, and lesser points of contact with the shell of the structure for structural borne vibration can travel great distances. As a sound proof under screed, MuteMat® USP 600-17 is perfect for this application due to its robust nature and suspension, and it’s the ability to withstand high point loads. We can help review your plans of structure and the potential noise sensitive environments in the vicinity by carrying out a Noise Impact Assessment.

Areas of gyms that create the most impact is of course where weight lifting and weight machines are concerned, and when looking for an acoustic under screed you will need something that could alleviate these issues from becoming structural borne vibration and interfering with adjacent residential and commercial properties, as well as internal rooms that are noise sensitive. Most multipurpose dwellings to wear gyms are situated often require a screeding, so during this process, it would be wise to implement MuteMat® USP 600-17 to separate this. Depending on the gym location and the noise sensitive areas and developments - these would most often be specified alongside gym floor coverings like those available with our MuteGym™ range. We can help review your plans of structure and the potential noise sensitive environments in the vicinity by carrying out a Noise Impact Assessment.

We currently do not have details for the compatibility with underfloor heating systems, but we will look to test these soon - all our data is readily available on the product data sheet found in Related PDFs.

Retrospective fitting is just as straightforward as a new build as long as you have discussed your requirements with a local screed team or structural engineer, to make sure the build can support the additional weight. - It is simply laid and taped, with MuteMat® USP 600-17 and the new Floating Screed abutted to a perimeter edging strip around each room to prevent Flanking Transmission.