Acoustic Barrier Sheet
Soundlay Plus Sru Insulation
At Advanced Seals and Gaskets Ltd, we take pride in offering a wide range of sponge and rubber sheeting products, including a specialist range of acoustic solutions. One of our key products is the Class ‘O acoustic polyurethane with barrier sheets – high-quality composite sheets designed to provide superior sound insulation.
These sheets are created by splitting Class ‘O acoustic polyurethane blocks and laminating them with mass-loaded vinyl (MLV) barrier material. Due to its density, the vinyl is generally produced in sheet form and then combined with the foam to deliver excellent soundproofing properties.
Because all splitting and laminating are carried out in-house, we can supply thicknesses of up to 100mm and offer various composite combinations to meet specific requirements. Sheets can also be supplied plain, self-adhesive backed, or with a foil finish, depending on the application.
What is Class ‘O’ Acoustic Polyurethane with Barrier?
Polyurethane is a highly versatile material, and Class ‘O’ acoustic foam is a specialist variety designed for noise reduction and safety. This open-cell, lightweight material is flame-retardant, non-dusting, and resistant to mildew and fungal growth, providing excellent thermal and acoustic insulation.
When combined with a mass-loaded vinyl barrier layer, it forms a composite sheet that not only absorbs sound but also blocks transmission between spaces. In many cases, the vinyl is sandwiched between two layers of acoustic foam to create a highly effective noise-reduction panel.
We supply acoustic polyurethane with barrier sheets in three standard weights:
- 5kg (approx. 2.5 – 3mm thick)
- 7.5kg (approx. 3 – 4mm thick)
- 10kg (approx. 4 – 5mm thick)
The greater the weight, the stronger the soundproofing capability. MLV itself is made from a blend of calcium silicate or barium sulfate with vinyl, which delivers density for noise reduction while remaining flexible for easier installation.
Acoustic Eggbox panels
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Acoustic Soundproofing Panels
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Acoustic Hexagonal Soundproofing Panels
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Acoustic Barrier Sheet
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Why Use Class ‘O’ Acoustic Polyurethane with Barrier Sheets?
Class ‘O’ acoustic polyurethane with barrier sheets is specifically engineered for applications requiring a high level of soundproofing. By combining a noise barrier with a sound-absorbing material, these sheets effectively reduce sound transmission and vibration.
Because the foam is Class ‘O’ rated, it is flame-retardant and safe for use in industries such as:
- Construction (walls, ceilings, plant rooms, flooring)
- HVAC (duct lining, enclosures)
- Automotive (engine bays, vehicle soundproofing)
- Marine (engine rooms, vessel insulation)
They are ideal for blocking everyday noise from machinery, construction, traffic, and even aircraft, making them suitable for both industrial and commercial applications.
The Advantages of Using Class ‘O’ Acoustic Polyurethane with Barrier
Choosing these acoustic sheets offers a wide range of benefits, including:
- Effective soundproofing and vibration dampening
- Flame-retardant properties for added safety
- Use as sound and vibration absorption panels.
- Suitable for creating soundproof enclosures for noisy machinery
- Flexible installation compared to rigid soundproof boards
- Can be used in flooring, ceilings, walls, and more
Unlike standard acoustic boards, the addition of MLV makes these sheets flexible and easy to cut or shape around corners, pipes, and irregular spaces – ensuring both performance and practicality.
Benefits of Using Class ‘O’ Acoustic Polyurethane with Barrier
- Can be applied to floors, walls, and ceilings
- Reduces unwanted vibration and noise transmission
- Fire-resistant and. Class ‘O’ certified.
- Available as standalone MLV sheets or laminated composites
- Sheets can be cut into pads, strips, gaskets, or panels.
- Supplied in various thicknesses and weights
- Resistant to mildew and fungal growth
Different Types Available
The soundproofing barrier material is available in several formats to suit project needs:
Mass Loaded Vinyl Barrier Options:
- 5kg (2.5mm – 3mm) – approx. 26 dB acoustic performance
- 7.5kg (3mm – 4mm)
- 10kg (4mm – 5mm) – approx. 32 dB acoustic performance
Finishes Available:
- Plain finish
- Self-adhesive backing for quick installation
- Foil face (with optional scrim-lined foil) for improved thermal insulation and durability
Please contact us using the form below or by calling us on +44(0)1384 252555.





















