
SonaSpray fc advantages
- All SonaSpray projects qualify for Bronze level – Sownd Certification – an inclusivity certification for ensuring inclusive spaces for those with hearing or visual impairments and neurodiversity. For more information please visit https://www.sownd.co.uk/.
- Class 0 to BS476 & B-s1,d0 fire rating (full fire test reports available on request). View full fire ratings.
- Absorbs sound energy instead of reflecting it, reducing reverberation times and overall noise levels.
- Achieves M1 certification for Building Materials emissions.
- Contributes up to 17 points to the overall LEED (Leadership in Energy and Environmental Design) rating of a project.
- Product specific Environmental Product Declarations (EPDs) to ISO 14025 and Health Product Declarations (HPDs). See product downloads tab below.
- Cradle to Cradle certified.
- The water-based adhesive provides a strong, durable and resilient bond.
- Sound absorber an be applied to virtually any substrate configuration.
- Sprays directly onto plasterboard, concrete, steel sheet and most other surfaces.
SonaSpray fc
technical specifications
Our SonaSpray range exceeds the latest fire requirements set under the updated Fire Safety: Approved Document B.
European fire test by Efectis Nederland:
B – s1, d0
UK fire test by Warrington fire research:
Class 0 to BS476 Part 6
Class l to BS476 Part 7
Full fire test reports available on request. Important Note: Always insist on obtaining a copy of the fire test report before using a product.
Its Class 0 to BS476 and B-s1,d0 fire rating provide significant benefits over the new Approved Document B requirements by providing little to no smoke and absolutely no droplets, assisting in the safe escape of occupants. Click here for more information on the fire properties of SonaSpray and the new Approved Document B requirements.
* NRC calculated from EN 20354 tests.
| Depth | 125Hz | 250Hz | 500Hz | 1kHz | 2kHz | 4kHz | NRC | αw | Class |
| 8mm | 0.06 | 0.17 | 0.53 | 0.71 | 0.82 | 1.00 | 0.56* | 0.50 | D |
| 12mm | 0.11 | 0.34 | 0.85 | 0.94 | 1.04 | 1.04 | 0.79* | 0.65 | C |
| 16mm | 0.08 | 0.36 | 0.90 | 0.96 | 0.97 | 0.92 | 0.80* | 0.65 | C |
| 20mm | 0.08 | 0.36 | 0.90 | 0.96 | 0.97 | 0.92 | 0.80* | 0.65 | C |
| 19mm onto ribbed deck | 0.17 | 0.58 | 0.91 | 0.89 | 0.87 | 0.84 | 0.80 | – | A |
The above acoustic data is tested as worst case, onto concrete. Applying onto other substrates such as plasterboard with air gaps behind or profiled metal soffits, primarily increases absorption at low frequency which can increase absorption classes.
SonaSpray can achieve any class as we can adjust acoustic performance by increasing and decreasing the material depth to suit the acoustic requirement and budget.
Please contact Oscar Acoustics’ technical department for free assistance.
The SonaSpray range contributes towards many sustainable design and health certification systems including BREEAM, SKA, Living Building Challenge and adds up to 17 points towards the LEED (Leadership in Energy and Environmental Design) rating of a project.
The SonaSpray range achieves M1 certification as Low Emitting Building Materials. This is the best possible classification.
SonaSpray finishes are compliant with CDPH/ CA Section 01350 and are GREENGUARD Gold Certified for Indoor Air Quality. GREENGUARD Gold Products are now confirmed to show compliance with BREEAM rating system HEA Indoor Air Quality and ensure that a product has met some of the world’s most rigorous and comprehensive standards for low emissions of VOC’s into indoor air. The range is also covered by an Environmental Product Declaration in accordance with ISO 14025 and meets the requirements of the Living Building Challenge and LEED.
Achieves Cradle to Cradle and contributes towards satisfying many features under the WELL Building Standard®
Made of fire treated, recycled paper and other rapidly renewable natural resources, SonaSpray can effectively lower the carbon footprint of the building project by sequestering rich stores of carbon for the life of the structure or application.
Oscar Acoustics have taken steps to reduce our environmental impact and demonstrate our commitment to protecting the environment by achieving ISO 14001 certification.
The SonaSpray range is manufactured by International Cellulose Corporation (ICC) to the ISO 9001 quality management standard.
- SonaSpray is manufactured by ICC to ISO 9001.
- Installed using a four stage Oscar Acoustics quality assurance plan.
- Materials, equipment, labour and installation only to be provided by ICC’s sole licensee for Great Britain – Oscar Acoustics.
From specification to installation, everything is kept in-house. We have created our own purpose-built training facility in our Oscar Innovation Centre HQ. The ‘SonaSpray Training Academy’ provides a controlled environment for our teams to build their skills with our Head of Quality Control. This ensures a high-quality and long lasting acoustic finish every time.
- BIM Objects available for every product.
- All products are included within all current NBS software.
- Recessed and surface mounted items possible – see website for more information.
- Standard detail drawings for most situations.
- Bespoke detailing solutions possible.
Oscar Acoustics offer a ‘Detailing of acoustic finishes’ CPD:
https://www.oscar-acoustics.com/cpd/
This presentation includes:
- The biggest myths architects are still being told about reverberation, including frequencies and Class A absorption.
- Live drawing detailing for avoiding common pitfalls and achieving a long-lasting acoustic finish.
- Things to be aware of with all acoustic finishes.
An introduction to the pioneering ‘Sownd Certification’. A new global performance-based standard, designed to formally classify buildings as audio-inclusive.
Our state-of-the-art HQ, the Oscar Innovation Centre, in Halling, Kent, showcases its SonaSpray range in a real-life setting.
By booking a tour you will get a real sense of how the SonaSpray can visually and acoustically transform your next project. Book a tour for yourself, your design teams and potential clients to view SonaSpray products in situ and see and hear them come to life.
Only 30 minutes from London by train, the Oscar Innovation Centre is located in Halling, Kent.
Book a tour here: https://www.oscar-acoustics.com/book-a-tour-cpd/
SonaSpray is excellent at thermally insulating by creating macroscopic air spaces between and within the cellulose fibres. U-Values can be adjusted to your projects exact requirements by adjusting the spray material depth.
- Dry Weight of SonaSpray fc per 10mm thickness = 1.60 kg/m2
- Wet Weight of SonaSpray fc per 10mm thickness = 2.93 kg/m2
- Dry Weight of SonaSpray fc per 20mm thickness = 3.20 kg/m2
- Wet Weight of SonaSpray fc per 20mm thickness = 5.86 kg/m2
SonaSpray fc sound absorber can be applied to virtually any substrate.
Some surfaces may need priming to control suction. Old surfaces or boards with high recycled content, may need a stain barrier coating to prevent contaminants from leaching out of whilst the surface is wet. Fully cured SonaSpray fc can not only improve the architectural acoustics but improve the strength of the substrate.
| Bond Strength: | SonaSpray fc | >600 psf ASTM E-736 |
| Compression Strength: | SonaSpray fc | >400 psf ASTM E-761 |
The water-based adhesive used with SonaSpray fc sound absorber provides a strong, durable and resilient bond. Fully cured SonaSpray can not only improve the architectural acoustics but improve the strength of the substrate.
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 SonaSpray 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.
SonaSpray fc sound absorber can be quickly and effectively applied to most prepared surfaces and construction configurations. This allows minimum working down time in existing structures with abilities to meet critical deadlines in new construction.
SonaSpray fc has a fine surface texture and is suited to ceilings of offices, restaurants, receptions, lecture theatres, lobbies, classrooms, swimming pools etc. SonaSpray is an excellent sound absorber for any indoor space with a noise problem.
Please note that it is important not to use moisture resistant plasterboard as this can cause staining of wet applied products. Stain barrier primers and paints can be used to prevent this. Please consult Oscar Acoustics for more information.
When using plasterboard as the substrate, a minimum of 12.5mm thick plasterboard, installed to British Gypsum specification should be used.
SonaSpray fc sound absorber can be over-painted or applied with additional coats of SonaSpray. Small areas of damage can be repaired by hand. Maintenance of SonaSpray is minimal.
If SonaSpray is disturbed or damaged so that fibre is released into the atmosphere, the resulting contamination is harmless.
Maintenance work can be undertaken while the building is occupied. Please refer to COSHH data for detailed product analysis.
Please note: Some surfaces, such as water stained ceilings, wood and oxidized metal, will require sealing to prevent migratory staining of the SonaSpray finish.
Standard Colours: (s) = Stock (ns) = Non-Stock
SonaSpray fcx: Arctic White (s), White (ns)
SonaSpray fc: Arctic White (s), White (ns), Black (ns)
SonaSpray K-13 Special: White (s), Light Grey (s), Grey (s), Dark Grey (ns), Black (s), Beige (ns), Tan (ns)
SonaSpray K-13: White (s), Light Grey (s), Grey (s), Dark Grey (ns), Black (s), Beige (ns), Tan (ns)
Bespoke colours are manufactured to order. Minimum order quantities apply, and square meterage is dependent on the product and thickness of spray. Please send us your colour requirement using a RAL, RAL Design or Dulux paint reference and we will respond with quantity, price and colour samples.
Recycled content values for SonaSpray fibres (excludes water-based adhesive):
Pre-Consumer recycled content: Minimum 80%
Recycled content values as installed (consisting of both fibres and water-based adhesive):
Pre-Consumer recycled content: Minimum 50%
SonaSpray is a permanently installed interior finish material that is designed for the useful life of a building project. At the end of its useful life, the material may be removed and repurposed into thermal cavity fill insulation or for other recycling applications.
Future reconstruction of buildings may require the removal of SonaSpray. It can be recycled or disposed of as a non-special waste and your local authority environmental department will give advice on recycling.
Oscar Acoustics can take SonaSpray back and have it milled into thermal cavity fill.
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Discover the versatile application capabilities of SonaSpray fc acoustic spray through one of our high-resolution image packs, showcasing a range of environments.
Discover SonaSpray fc for:
- Commercial Spaces: Offices, boardrooms, reception areas.
- Education: Classrooms, lecture theatres, libraries.
- Hospitality: Restaurants, bars, hotels, music venues.
- Industrial: Warehouses, manufacturing plants, big sheds, showrooms.
- Cultural buildings & public spaces: Museums, galleries, theatres.
listen to the difference
Experience the dramatic acoustic transformation that SonaSpray fc can deliver with this amazing before and after video. In this short before-and-after comparison, you’ll hear how our sound absorbing spray reduces reverberation and enhances sound clarity, creating calmer, more comfortable interiors.
Whether you’re designing offices, educational spaces, or public venues, SonaSpray helps you achieve both aesthetic and acoustic excellence. Press play to hear the difference for yourself.
Ready to specify SonaSpray? Contact our team to request test data, discuss colour options, or get expert advice on your project.











