MLV50 SA Self-Adhesive Acoustic Membrane is a high-density mass loaded acoustic membrane designed to add mass and improve sound insulation in walls, floors and ceilings. Supplied in a 1.2m x 6m roll, each roll covers 7.2m² and provides a slim 2.5mm acoustic layer with a mass of 5kg/m².
MLV50 SA is a self-adhesive sound barrier membrane loaded with naturally occurring minerals. It is commonly used in combination with plasterboard, acoustic boards, timber sheet materials and other soundproofing products to help reduce airborne noise transfer through building structures.
MLV50 SA is used to add mass to wall, floor and ceiling systems. The self-adhesive backing makes it easier to apply to suitable boards, panels and prepared surfaces where a dense acoustic barrier layer is required.
It is commonly used in party wall upgrades, stud wall systems, ceiling soundproofing systems, floor soundproofing build-ups, media rooms, home offices, studios, commercial spaces and refurbishment projects.
MLV50 SA works by adding a dense, flexible mass layer to the structure. The added mass helps resist airborne sound transmission, while the flexible membrane can also help reduce vibration within the overall build-up.
The self-adhesive backing allows the membrane to be bonded to suitable surfaces, making it easier to install than a loose membrane in many wall, floor and ceiling applications.
MLV50 SA is usually not used as a standalone soundproofing product. It performs best when combined with suitable boards, acoustic insulation, resilient systems and acoustic sealant.
MLV50 SA is mainly used to help reduce airborne noise. This includes voices, TV noise, music, office noise, traffic noise and general room-to-room sound transfer.
When used in floor and ceiling systems, it can also support the wider acoustic build-up by adding mass to reduce sound transmission. Impact noise from footsteps normally requires additional resilient layers, acoustic underlays, floating floor systems or ceiling isolation products.
MLV50 SA Self-Adhesive Acoustic Membrane is suitable for a range of domestic, commercial and trade soundproofing applications, including:
MLV50 SA is useful where extra acoustic mass is required but available space is limited. At only 2.5mm thick, it can be added into a wall, floor or ceiling build-up without creating a deep system.
The self-adhesive backing makes it practical for bonding to boards and prepared surfaces, helping speed up installation compared with loose-laid membranes that require separate adhesive.
The main difference is the adhesive backing. MLV50 SA has a self-adhesive layer, making it easier to bond to suitable boards and prepared surfaces. Non-adhesive acoustic membranes normally require separate adhesive, mechanical fixing or sandwiching between board layers.
The right option depends on the installation method, surface type, application and whether you need the membrane to stay fixed in place during fitting.
MLV50 SA performs best when used as part of a complete acoustic system. The final result will depend on the existing wall, floor or ceiling construction, the supporting board layers, installation quality and how well gaps, joints and weak points are sealed.
For wall and ceiling soundproofing, MLV50 SA is commonly combined with plasterboard, acoustic boards, acoustic mineral wool, resilient bars, furring channels and acoustic sealant. For floors, it may be used as part of a wider build-up with acoustic boards, acoustic underlays or floating floor layers.
If you are unsure whether MLV50 SA is right for your project, please contact our team before ordering. We can help advise on the most suitable soundproofing system based on your room, noise issue, structure and available build-up depth.
MLV50 SA Self-Adhesive Acoustic Membrane is a high-density mass loaded acoustic membrane used to add mass and improve airborne sound insulation in wall, floor and ceiling systems. It is a slim, flexible, self-adhesive sound barrier designed for use as part of a complete soundproofing build-up.
| Product Name | MLV50 SA Self-Adhesive Acoustic Membrane |
| Product Type | Self-adhesive mass loaded acoustic membrane |
| Material | Mineral-loaded flexible acoustic barrier membrane |
| Application | Walls, floors and ceilings |
| Suitable For | Party walls, stud walls, ceilings, floors, plasterboard systems, timber sheet materials and acoustic board build-ups |
| Roll Size | 1.2m x 6m |
| Coverage | 7.2m² per roll |
| Thickness | 2.5mm |
| Mass | 5kg/m² |
| Approx. Roll Weight | 36kg per roll |
| Adhesive Type | Self-adhesive backing with release liner |
| Published Acoustic Performance | Supplier data lists acoustic performance around 26dB; final result depends on the full system and test conditions |
| Main Noise Type | Airborne noise |
| Composition Note | Free from lead, unrefined aromatic oils and bitumen according to supplier data |
| Installation Method | Bonded to suitable clean, dry and prepared surfaces using the self-adhesive backing |
| Cutting Method | Sharp utility knife or suitable cutting tool |
| Fire Rating | Not confirmed in reviewed supplier data — confirm before compliance-led use |
| Standalone Product? | No — should be used as part of a complete acoustic wall, floor or ceiling system |
MLV50 SA Self-Adhesive Acoustic Membrane can be used in a range of acoustic applications, including:
MLV50 SA is used to improve acoustic performance by adding mass to the soundproofing build-up. It is mainly used to reduce airborne sound transmission through walls, floors and ceilings.
It is commonly bonded to suitable boards or surfaces and then covered with additional board layers or finishing materials. In many systems, it is used between two rigid layers to increase mass and improve the overall acoustic performance.
MLV50 SA is an acoustic membrane, not a complete soundproofing system on its own. The final performance depends on the full wall, floor or ceiling build-up.
Existing structure, supporting board layers, cavity treatment, fixing method, sealing detail, installation quality and flanking noise paths can all affect the final result.
Published acoustic figures should be treated as product or test-condition dependent. For compliance-led projects, use the correct tested system data and seek project-specific acoustic advice where required.
MLV50 SA rolls are heavy and should be handled carefully. Store the roll dry, protected and away from sharp objects before installation.
Before fitting, make sure the membrane and substrate are clean, dry and free from dust, grease and loose material. Cut carefully around edges, sockets, services and obstructions.
Once the release liner is removed, position the membrane carefully. Self-adhesive membranes can be difficult to reposition after bonding, so plan the layout before starting.
MLV50 SA Self-Adhesive Acoustic Membrane is installed as a dense acoustic mass layer within wall, floor and ceiling soundproofing systems. It can be bonded to suitable boards or prepared surfaces using its self-adhesive backing.
For the best result, the surface should be clean, dry, stable and free from dust, grease and loose material before the membrane is fitted.
Check the installation surface before fitting MLV50 SA. The surface should be clean, dry, flat, stable and suitable for bonding.
Remove dust, grease, loose paint, loose plaster, wallpaper residue and other unstable materials. If the surface is dusty or porous, it may need to be sealed or primed before the membrane is applied.
Plan the full acoustic build-up before starting. MLV50 SA is most effective when used with suitable supporting materials such as plasterboard, acoustic boards, acoustic mineral wool, resilient bars, furring channels and acoustic sealant.
Make sure the surface is ready for the self-adhesive membrane. The surface should be:
Do not apply MLV50 SA to damp, dusty, greasy or unstable surfaces. Poor surface preparation can reduce the adhesive bond and affect the installation.
Before applying the membrane, seal obvious sound leakage paths. Pay close attention to:
Use acoustic sealant where suitable. Sound can travel through small gaps, so sealing is an important part of the soundproofing system.
Measure the installation area and plan the membrane layout before cutting. MLV50 SA is supplied in a 1.2m x 6m roll and covers 7.2m².
Plan the layout so the membrane covers the area evenly, with tight joints and minimal waste. Avoid unnecessary small offcuts where possible.
For board applications, it is often easier to apply the membrane to the board while the board is flat, before the board is lifted into position.
Roll out the membrane and mark the required size. Use a sharp utility knife and straight edge to cut the membrane neatly.
Cut carefully around:
Keep cuts neat and avoid leaving unnecessary gaps, as open gaps can reduce the acoustic performance of the system.
Position the cut membrane in place before removing the release liner. Once you are happy with the position, peel back a small section of the release liner to expose the adhesive.
Do not remove the entire release liner at once unless the piece is small and easy to control. Working gradually helps prevent the membrane from sticking to itself or bonding in the wrong position.
Press the exposed adhesive side of the membrane onto the prepared surface. Continue peeling away the release liner while pressing the membrane into place.
Use a roller, flat board or firm hand pressure to apply even pressure across the full surface. Work from one side to the other to reduce air pockets and ensure good contact.
Make sure the membrane is fully bonded and sitting flat against the surface.
Install adjacent pieces of MLV50 SA with tight butt joints. Do not leave gaps between sheets or strips.
Where required, seal or tape the joints using suitable acoustic tape or sealant. The aim is to create a continuous acoustic mass layer with no obvious weak points.
Do not overlap the membrane unless the specific system design allows for it, as overlaps can create uneven board layers and fitting issues.
Once the membrane is installed, check all perimeter edges, joints and cut-outs.
Use acoustic sealant around:
Good sealing is important because even small gaps can allow sound to bypass the acoustic membrane.
Once the MLV50 SA is bonded and sealed, install the next layer of the soundproofing system.
Depending on the project, this may include:
Follow the system design and make sure the final build-up is properly fixed, supported and sealed.
For wall applications, MLV50 SA can be bonded to plasterboard, acoustic board or a suitable prepared wall surface.
It is commonly used behind plasterboard or acoustic board layers as part of a party wall or stud wall soundproofing system. For improved performance, it may be combined with acoustic mineral wool in the cavity and resilient bars or furring channels where decoupling is required.
For ceiling applications, it is often easier to apply MLV50 SA to plasterboard or acoustic board while the board is flat, then lift and fix the board into position.
Ceiling systems must be designed to carry the total weight of the boards, membrane and fixings. Check the structure and fixing method before installation.
For improved performance, MLV50 SA is commonly used with acoustic mineral wool in the ceiling void, resilient bars or furring channels, acoustic plasterboard and acoustic sealant.
For floor applications, MLV50 SA can be used as part of a wider acoustic floor build-up where additional mass is required.
It may be installed with acoustic boards, floating floor layers, acoustic underlays or timber sheet materials depending on the system. The floor should be clean, dry, stable and free from protruding fixings before the membrane is fitted.
Impact noise normally requires resilient layers as well as mass, so MLV50 SA should not be treated as a complete impact noise solution by itself.
MLV50 SA Self-Adhesive Acoustic Membrane helps improve sound insulation by adding mass to walls, floors and ceilings, but the final performance depends on the complete acoustic build-up.
Existing structure, board layers, cavity insulation, resilient isolation, fixing method, perimeter sealing and flanking noise paths can all affect the final result.
If you are unsure how to use MLV50 SA in your project, please contact our team before installation. We can help advise on the most suitable soundproofing system based on your room, structure, noise issue and available build-up depth.
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