acoustic plaster features and benefits
- All Oscar Elite projects qualify for Bronze level Sownd Certification, an inclusivity certification for ensuring inclusive spaces for those with hearing or visual impairments and neurodiversity. For information visit here.
- A2-s1,d0 & Class 0 fire rated to BS476. View full fire ratings.
- Achieves M1 certification for Building Materials emissions.
- Increases productivity by creating a calm and pleasant acoustic environment.
- Can be directly applied to substrates such as plasterboard or smooth concrete.
- Suitable for flat, domed and vaulted soffits.
- Quick and easy to install.
- Easy to maintain through vacuuming or dusting.
- Available in two surface finishes.
- The standard white finish provides a light reflectivity of 94%.
- Acoustic plaster installations are applied at 25mm or 45mm thick; the area is dependent on the acoustical requirements of the project. An air gap is introduced to achieve high absorption at low frequencies.
- Can be over-sprayed in a different colour using SonaColour if required.
- Installed by our specialist in-house Oscar teams who cover the whole of Great Britain.
Oscar Elite
technical specifications
The 27mm construction consists of 2mm adhesive, 20mm thick mineral board, base and top coat Oscar Elite synthetic acoustic plaster totalling approximately 5mm, which is sprayed, trowelled and worked to optical requirements. The finish is visually hard and firm to the touch but with excellent sound absorption. As with all acoustic plaster, installations should be suitably protected in areas where damage is likely.
Oscar Elite acoustic plaster is installed by our own in house, specialist trained staff in order to guarantee a finish to the highest standards and an installation that lasts as long as required.
- 27 mm
- 47 mm
UK fire test
Class 0 to BS476 Part 6
Class l to BS476 Part 7
European
A2-s1,d0
Significantly betters the requirements of the new Approved Document B providing little to no smoke and absolutely no droplets, assisting in the safe escape of occupants.
- Achieves M1 certification for Building Materials emissions.
- Recycled content: Glasswool: 75%.
- Recyclability: Disposal in accordance with local recycling/disposal rules.
Oscar Elite is applied in two operations:
- High density mineral batts are directly fixed to the substrate using adhesive. The base coat is then spray applied, trowelled flat and left to dry.
- Once dry the topcoat is spray applied. When the topcoat is dry the surface is sanded to an exceptionally fine plaster-like finish.
Oscar Elite can be applied onto plasterboard or directly onto concrete. Adhesion to other surfaces is possible; please contact Oscar Acoustics for advice. Domes & barrel vaults are not a problem due to the product’s ability to be sanded into smooth shapes.
- BIM Objects available.
- Included within all NBS software.
- Standard details drawings for most situations.
- Bespoke detailing solutions possible.
- Recessed & surface mounted items possible.
Quality assurance:
- Installed using a four-stage Oscar Acoustics quality assurance plan.
- Materials, equipment, labour and installation to be provided by Asona’s sole licensee for Great Britain – Oscar Acoustics.
- Oscar Elite to be installed by spray application using only Asona authorised equipment.
- The installer must use a total system encompassing equipment, fibre and adhesive.
- No substitution may be made.
Dust is removed by lightly brushing or vacuuming with a soft brush head. It is also sometimes possible to blow dirt from the surface with a high pressure air hose. A wall or a ceiling can be entirely over sprayed in acoustic plaster in the same or a change of colour. Over painting must be done by spraying and not roller to prevent serious impact on the acoustic performance and damage to the product. Advice must be sought from Oscar Acoustics before painting, as incorrect application can result in damage to the product.
A major benefit of Oscar Elite is its ability, in most cases, to be locally repaired within reason, negating the need for expensive and inconvenient pre-handover resprays, as with many products similar in appearance. For more serious damage, it is possible for us to lightly sand and reapply the top coat.
Recessed services e.g. spot lighting will require a halo spacer to match the material depth. Oscar Acoustics manufacture and install stainless steel halo spacers (drawing available) to the same size as the hole cut out. Stop beads may be required around openings, which again we can supply and install. Specially designed access hatches are also available through Profab, enabling the Oscar Elite to continue across the hatch door.
Problems can arise from using other hatches. These items are at extra cost and are to be purchased direct from the Profab. Please contact Oscar Acoustics for details and item code. Surface mounted fittings e.g. hanging/pendant lights will require pattresses to match the material depth. Please contact Oscar Acoustics for further advice.
Please Note: 90% of flangeless fittings do not work properly with any acoustic finish. If you are specifying a flangeless fitting, please contact Oscar Acoustics for advice.
Our technical department offer free advice and acoustic calculations on the use of our products.
| Depth | 125Hz | 250Hz | 500Hz | 1kHz | 2kHz | 4kHz | NRC | αw |
|---|---|---|---|---|---|---|---|---|
| 27mm | 0.10 | 0.50 | 0.85 | 0.85 | 0.80 | 0.80 | 0.80 | 0.80 |
| 47mm | 0.40 | 0.80 | 0.95 | 0.95 | 0.90 | 0.90 | 0.90 | 0.95 |
Acoustic plaster test DATA certified by TNO Technology University Delft NL. Acoustic testing has been carried out against solid concrete. Increased performance can be achieved when applying onto plasterboard with an air gap.
The standard colour is visually closest to RAL 9003.
For bespoke colours, please send us your colour requirement using a Dulux paint reference or RAL. If over painting, please contact Oscar Acoustics for instructions first.
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Oscar Elite on grand designs
When Holland Park house featured in Grand Designs (Series 7, Episode 16) underwent its transformation, every design decision had to meet both form and function. There was no room for compromise on detail.
One of the greatest challenges was the owner’s desire for a serene, minimalist aesthetic with the need for a comfortable, balanced acoustic environment. Expanses of smooth, hard surfaces are visually compelling, but left untreated they can turn even the most beautiful rooms into echo chambers.
The solution came in the form of our Oscar Elite acoustic plaster. Spray-applied across the ceiling and into the dramatic light well, it delivered a flawless, seamless surface — the kind the camera loves — while quietly absorbing unwanted reverberation. The result was a space where voices are warm and clear, footsteps softened, and the ambience calm, despite the abundant hard finishes.
On screen, viewers admired the clean architectural lines and luminous interiors. In person, the magic is in the way the house sounds — proof that great architecture is as much about the ear as the eye.
acoustic plaster projects
acoustic plaster frequently asked questions
Oscar Elite acoustic plaster is a specialist plaster system designed to absorb sound, rather than reflect it, within interior spaces.
It consists of a high-performance acoustic base board layer made from glass fibre, overlaid with an acoustically transparent, smooth plaster finish that allows sound to pass through and be absorbed by the underlying base board. The result is a clean, monolithic surface that significantly improves acoustic comfort without compromising on design.
Yes, acoustic plaster helps with reverberation. If you’re hoping to use regular plaster and achieve quality acoustics, you will probably end up disappointed. Oscar Elite absorbs sound instead of reflecting it, reducing reverberation times and overall noise levels in a space.
The science behind acoustic plaster lies in its ability to reduce reverberation by absorbing sound energy. When sound waves hit a hard surface, they bounce off and create echoes. Our acoustic plaster systems are designed to prevent this by allowing sound to penetrate through the surface layer, where it is dissipated within the acoustic base board layer. This process reduces background noise, improves speech intelligibility, and enhances the overall acoustic environment.
Unlike standard plasters or rigid panels, acoustic plaster is inherently porous, enabling effective sound absorption across a range of frequencies. This makes it especially useful in environments where clear communication or reduced noise levels are essential, such as offices, restaurants, schools, and public buildings.
Acoustic plaster is incredibly versatile and can be applied across a wide range of environments:
- Commercial Spaces: Offices, boardrooms, reception areas
- Education: Classrooms, lecture theatres, libraries
- Hospitality: Restaurants, bars, hotel lobbies
- Residential: Living rooms, home cinemas, open-plan kitchens
- Cultural Buildings: Museums, galleries, theatres
Its unobtrusive nature means it can even be used in listed buildings where maintaining the original aesthetic is crucial.
The installation of acoustic plaster typically involves the following steps:
- Substrate preparation: The base must be clean, dry, and structurally sound.
- Acoustic layer application: Mineral wool panels or similar materials are fixed to the surface.
- Base and finishing coats: A specialist plaster mixture is sprayed or trowelled over the acoustic layer.
- Curing and finishing: After drying, the surface may be sanded or tinted to achieve the desired finish.
Depending on project size and complexity, installation can be completed in a few days to a couple of weeks.
download image pack
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Discover the versatile application capabilities of Oscar Elite acoustic plaster through one of our high-resolution image packs, showcasing a range of environments.
Discover acoustic plaster for:
- Commercial Spaces: Offices, boardrooms, reception areas.
- Education: Classrooms, nurseries, lecture theatres, libraries.
- Hospitality: Restaurants, bars, hotels, music venues.
- Public spaces and cultural buildings: Museums, galleries, theatres.
- Industrial: Warehouses, big sheds, manufacturing facilities.
