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Tecsound S50 ALU

Performance: 25.2dB*

Dimensions: 6m x 1.22m x 3mm

Weight: 40kg

For: Homes, workplaces, industrial developments, and specialist audio environments.

Compliance: Compliant with both Part E Building Regulations (England, Wales, Northern Ireland and the Republic of Ireland).*

Installation: Please see our installation tab below.

Where Multi-use application on walls, floors and ceilings. Used as a standalone for the damping of vibration in metal structures and use in many of our acoustic systems.

Vibration Control and Damping Products. Tecsounds Visco Elastic Membrane can be used to mitigate vibration in panels and metal frames or it can be used to provide airborne and impact sound insulation between spaces.

Tecsound is a flexible, easy to handle and high performing acoustic matting for all your soundproofing needs. it is a feature in many of our acoustic systems and is suited for timber and concrete structures with particular focus on the 'muting' vibration in metal structures. Learn more below.

More Information

The adverse effects that noise pollution has on our health are ones that concern the long-term, the longer you are exposed to them, the more significant the health risks. It affects our health and wellbeing, so it is essential to find the right solution in both the home and the workplace.

Tecsound SY50 ALU is a visco-elastic membrane, and this means it is both a viscous material, part way between a solid and a liquid, having elastic properties, meaning that it returns to its original form when stress is within its limits, like pulling an elastic band, if you pull it too hard it will break. Tecsounds sweet spot for damping or ‘muting’ vibration does not often go into these ‘stresses’ in the majority of projects that need control over vibration.


  • 6m x 1.22m x 3mm (7.32m2).
  • A visco-elastic membrane for damping vibration.
  • High mass for resisting airborne noise.
  • Self-adhesive application to a wide range of surfaces.
  • Easy to cut to size.

For soundproofing, these are both effective for the damping of vibration, and because of its high mass, will reduce airborne noise too. To achieve the best possible solution on soundproofing projects, you will need to incorporate them into ‘Systems’, and it is here you will find Tecsound in a range of options. Each offers ways of increasing acoustic performance, for example, by fitting them alongside acoustic cradles to create a fully floating floor, by adding them to joist structures alongside sound insulation for a vast improvement for airborne and impact noise or use in concrete buildings as a standalone for impact reduction.

Tecsound SY50 ALU is a single ply material, one that is used between plasterboards in our acoustic systems or used to be directly applied to metalwork to dampen vibration. Our acoustic test data and performance is based on an acoustic curtain, where Tecsound separates two rooms and then measures its performance. When factored into a ‘System’ this will change as you cannot add dB levels together, you can learn more on our ‘Science of Soundproofing’ page.

Tecsound SY50AL is a 2mm thick, visco-elastic membrane that is accompanied with a self-adhesive backing to make direct application easier without the need for mechanical fixings, tacking or additional adhesives with an aluminium facing. Visco (viscous, a thick and often sticky consistency) elastic (when stretched will often return to its original state) is a malleable, dense and easy to cut product that sits between both these mechanical components, this makes it suitable for reducing vibration and airborne noise issues as the two properties combined help to turn sound energy into heat.
The aluminium facing of Tecsound S50AL is for decorative purposes only, for example – in industrial environments or when being applied to ducting or other metal structures it helps to blend in with the existing aesthetic instead of leaving the facing of Tecsound exposed.
Yes, it does, and it will be something you notice almost immediately. The self-adhesive backing is always in even contact with the surface, which is why we always opt for self-adhesive. Energy from the vibration, especially in metal structures, is absorbed into the Tecsound and the resonance is dampened, resulting in the removal of a long-delayed ring heard in the majority of metal structures. Tecsound is often used between acoustic plasterboard to provide additional sound proofing properties, and the aim is to provide different densities and material composites to break down frequencies in the most effective way possible.
Tecsound SY50 ALU is incredibly flexible because of its thickness, this makes it great for metal ducting and accommodates small jutting of fixtures – we would ask for some information about the ducting to make sure it is compatible in for your specific environment. Damp environments, for example, could lead to the adhesive becoming compromised over time. We would use Tecsound to dampen the long-tail resonance of sound in ductwork, and this would often not require complete coverage. In cases where the metal ducting leaks sound, we will aim to wrap the ducting to reduce sound transmission.
Tecsound SY50AL’s temperature range is between -20°C to 60°C, anything above and below these could compromise its self-adhesive qualities and the visco-elastic material – it is best to create a form of boxing around these pipes if noise can be heard from them and apply Tecsound to the acoustic plasterboard boxing. You will want to discuss these options with a registered plumbing expert to be sure of its compatibility.

Tecsound SY50AL can be used to soundproof waste pipes where waste can be heard travelling down or across them, and this can be a highly uncomfortable situation when these noises are in earshot, you should aim to box in the waste pipe to improve the overall soundproofing performance.

As an alternative, our MuteWrap™ works exceptionally well against sound proofing waste flues.

To help protect sound proofing materials from high amounts of vapour and moisture, which over time can begin to degrade the adhesive qualities and elastic materials in the Tecsound SY50. Damp professionals generally recommend that when using a soundproof system, that there is at least a Vapour or Moisture board protecting all materials from any exposure, it is most common that Moisture Board is used internally in bathrooms to preserve the sound proofing materials behind it. Vapour Boards concern primarily external walls, so when damp is expected in these areas – you will want to discuss the use of sound insulating materials with a damp specialist during the specification of materials.
Hung as an acoustic curtain, Tecsound reduces sound at an average of 25.2dB – what this means is if a sound measuring device is placed at one end of the room with a sound played at another (usually in a controlled environment with sound played at a specific level) it would reduce it by this amount. Decibel reductions cannot be added together, so when using Tecsound SY50 ALU in a soundproofing system, applied directly to a wall or within one of our MuteClip® Systems, these results will differ and is not always possible to determine what level of sound proofing the Tecsound will provide in these composites.

Installation Guide

Tecsound SY50 ALU s a self-adhesive material, and when Tecsound arrives, you will find two sheets attached as you roll it out. One of them is a polypropylene fleece that helps increase the tear strength of the Tecsound, do not tear this off, the other is the removable protective covering to expose the adhesive, this is easy to peel off compared to the protective fleece. If you are unsure, peel a little off the corner to reveal the adhesive side.

You will want to install Tecsound over the joins of acoustic plasterboard and not meet them up to create an airtight system, the lesser joins, the better. With this in mind, when cutting Tecsound you will want to keep them as generous as possible without being challenging to manage, it is easy to cut with a new Stanley blade, and you will want to have at least two people during the installation.


Product Data

Sound insulation advice for Part E

Soundproofing Floors
Soundproofing Floors
Soundproofing Designs for Party Floors to achieve compliance with Part E of the Building Regulations.
Soundproofing Walls

Soundproofing Walls

Soundproofing Designs for Party Walls to achieve compliance with Part E of the Building Regulations.

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