SonaSpray K-13 Special is a seamless acoustic spray that absorbs sound energy instead of reflecting it, reducing reverberation times and overall noise within a space. By using acoustic spray designers are able to create calm and inviting spaces that sound as good as they look.
SonaSpray K-13 Special can be applied directly to most substrates including concrete, plasterboard, GRP, steel, glass, expanded polystyrene and more. Almost any shaped substrate can be treated too, including domes, vaults, profile, corrugated and flat. Acoustic spray benefits include:
SonaSpray K-13 Special throughout Islington Customer Centre. Credit to Studio TILT Architects & Jill Tate Photography.
SonaSpray's Class 0 to BS476 & B-s1,d0 fire rating provides 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 below for more information on the fire properties of SonaSpray and the new Approved Document B requirements.
View full SonaSpray fire ratings
Note: Always insist on obtaining a copy of the fire test report before using a product.
The SonaSpray range consists of recycled, natural plant-based fibres and specialist water-based adhesives. The SonaSpray range is made from rapidly renewable resources that sequester carbon, reducing the amount of harmful greenhouse gasses in the atmosphere.
Cellulose, the primary raw ingredient of SonaSpray, contains wood, cotton and other rapidly renewable natural resources. These materials can effectively lower the carbon footprint of the building project by sequestering rich stores of carbon for the life of the structure or application.
Product quality and consistency is also of major importance so is under continual development. When using new materials, it is easy to control this but recycled content has to be the priority. In order to control this, SonaSpray acoustic spray is manufactured by ICC to ISO 9001 and is installed using an Oscar Acoustics four stage quality assurance plan.
Reconstruction of a building may necessitate removal of SonaSpray cellulose fibre acoustic spray. It can be recycled or disposed of as a non-special waste to landfill and your local authority waste disposal will give advice on recycling.
View environmental acoustics page
Available in a range of standard colours from stock, SonaSpray K-13 Special can also be manufactured to the client’s colour requirement (minimum quantity applies).
SonaSpray K-13 Special is a total acoustic spray system, with in-built treatment for fire and mould resistance; coloured through the full thickness of the coating. Manufacture is accredited ISO 9001:2000 certification.
SonaSpray K-13 Special acoustic spray was developed for installations where the standard SonaSpray K-13 surface was considered to be too coarse. SonaSpray K-13 Special has a finer texture and is an attractive surface finish in new build and renovation projects.
Pictured left - UCL Torrington. Structure Tone. Jacek Grabowski & Festus Moffit (John Robertson Architects)
SonaSpray K-13 Special is a popular choice in a wide variety of large spaces such as sports and other large hall facilities, school drama studios, television and sound studios, airports, railway stations, swimming pools and entertainment venues. Any indoor space where noise reverberation is a problem can hugely benefit from acoustic spray treatment.
Visit our acoustic projects page for more information on SonaSpray acoustic spray installations throughout the UK.
Patented adhesives provide unequalled bond strength allowing application thickness of up to 32mm in one application (see SonaSpray K-13 for thicker applications).
Should finer acoustic spray finishes be required, please see our full SonaSpray range including the smoothest acoustic plasters available. The excellent sound absorbing qualities of our acoustic spray range allows designers to utilise smaller areas for effective noise reverberation control and improved ambient sound quality without design compromise.
Acoustic spray testimonials
"Magical stuff! Well worth it - a huge improvement to one of our high ceilinged classrooms. The feedback is that there is a massive difference and it is definitely a more productive acoustic environment for the children and staff.
Thank you very much for improving things for us."
Abigail Hercules
Bursar of Dallington School
"I'd just like to convey my utter delight and relief at being able to use the new large hall. It was literally visible this evening, how our Beaver Scouts calmed as they moved from the small hall to the larger, more peaceful room. Thanks to you we had one of our best ever indoor activities. It was calm, fun and enjoyable for all. Thank you so much, I am only vaguely aware how much work you have put into this project, and want to make sure you know how much we appreciate it.
Well worth the money!"
The Beaver Scout Team and Wye Village Hall committee
“Following the recent installation of nearly 3,000m2 of SonaSpray K-13 Special to the corridors, classroom and activity hall ceilings plus an extra 200m2 of works to the main sports hall at St. Pauls Way Community School, Bouygues UK Ltd would like to thank Oscar Acoustics for their hard work in delivering a high standard of work within our programme, for which speed of installation was critical.
Your site teams should be commended on the professional manner in which they conduct themselves. We found them to be extremely helpful and knowledgeable whilst keeping comprehensive day to day records of events. They kept a 100% health & safety record for the duration of the project, passing unannounced inspections from an independent health & safety company organised by yourselves.
We are delighted with the appearance of the finished SonaSpray K-13 Special product and the performance that it provides; so too is our client. It passed all regulation testing first time. We would also like to thank Oscar Acoustics for their over and beyond acoustic technical advice on our project which meant the need for outside acoustic consultancy was kept to a minimum. We have recommended you for further Bouygues UK projects and look forward to continuing our working relationship with Oscar Acoustics."Chris Stevens
Managing Director, Bouygues UK
For more information regarding our acoustic spray range or if you have any questions regarding building acoustics you can call us direct on 01474 854902 or fill in our contact us form and a member of our friendly team will get back to you as soon as possible.
Good workplace design is essential when it comes to maximising employee health, wellbeing and productivity and the impact of noise within the space must be taken seriously for it to be a success. SonaSpray K-13 Special was specified by Studio TILT to control reverberation throughout the reception areas and offices of Islington Customer Centre, creating a calm and inviting workspace for both its staff and customers.
Office acoustics are a hot topic at the moment within the design and build industry as more and more designers and architects recognise that good acoustics really are essential to creativity and productivity within the workplace.
SonaSpray K-13 Special in white applied directly to the concrete soffit at Chisenhale Gallery, London to control reverberation for perfect gallery acoustics.
With its student population increasing rapidly, University College London (UCL) required more space on its campus in Bloomsbury. Working with the University’s Design Team, Structure Tone helped develop a scheme to refurbish the ground floor and basement and also renovate Level 10 at Torrington Place.
SonaSpray K-13 Special applied between beams in two bespoke grey colours to control reverberation and reduce noise levels at the award winning Brockholes Wetlands Centre, Preston.
At the Harpurhey Leisure Centre swimming pool, acoustic design calculations demonstrated there would be a problem with speech audibility in the pool area due to high levels of noise reverberation. One of our expert in-house installation teams installed 16mm of SonaSpray K-13 Special to the soffit in white resulting in perfect swimming pool acoustics.
SonaSpray K-13 Special in black was applied to reduce noise reverberation and achieve excellent nightclub acoustics as part of a basement car park conversion to a student bar in Cambridge.
Throughout the construction of St. Pauls Way Community School in London's Tower Hamlets, Oscar Acoustics assisted Bouygues UK with their school acoustic ceiling requirements. 3,000m2 of SonaSpray K-13 Special was applied to light wells, corridors, balconies & the activity hall resulting in easy 1st time compliance with BB93 testing.
Oscar Acoustics K-13 Special acoustic ceiling spray was applied for Du Boulay Contracts in white to control reverberation and decorate the existing rib deck at the Le Pain Quotidien cafe in Monument, London.
For excellent gallery acoustics, the designers incorporated our SonaSpray K-13 Special, a spray applied seamless one coat decorative acoustic ceiling & wall finish at 16mm in white for the main gallery area and in black for the cinema theatre.
Hope Academy in Newton-Le-Willows was a BSF design and build project by Willmott Dixon. Outside acoustic consultation lead to Oscar Acoustics’ SonaSpray FCX being specified for the impressive giant feature, yellow pods in the main dining space, SonaSpray K-13 Special in light and dark grey for the auditorium walls and SonaPanel acoustic panels for the main sports hall upper walls.
In 2005 work was completed on new Sevenoaks Preparatory School hall. This was intended to be used for sports lessons, assemblies, school, drama productions etc. It soon became apparent that due to poor school acoustics, the new hall was unfit for purpose and required acoustic treatment.
Download BIM ObjectAll our products significantly better the new fire requirement required under the updated 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. Note: Always insist on obtaining a copy of the fire test report before using a product.
Its Class 0 to BS476 & 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.
Where noise reverberation is a problem SonaSpray K-13 special acoustic ceiling and wall finish can be tailored to meet your specific project acoustic needs. There is a choice of finish; you may select texture, colour and acoustic performance. SonaSpray K-13 Special acoustic ceiling and wall finish can be applied at variable thickness and variable area to provide a designed acoustic ambience. It is spray applied to the full thickness in one application.
| Depth | 125Hz | 250Hz | 500Hz | 1kHz | 2kHz | 4kHz | NRC | αw |
|---|---|---|---|---|---|---|---|---|
| 12mm | 0.10 | 0.25 | 0.70 | 0.80 | 0.95 | 1.00 | 0.70 | 0.55 |
| 16mm | 0.10 | 0.35 | 0.80 | 0.90 | 1.00 | 1.00 | 0.75 | 0.65 |
| 19mm | 0.10 | 0.40 | 0.85 | 0.90 | 1.00 | 1.00 | 0.80 | 0.70 |
| 25mm | 0.20 | 0.50 | 0.90 | 1.00 | 1.00 | 1.00 | 0.80 | 0.80 |
| 30mm | 0.20 | 0.60 | 0.95 | 1.00 | 1.00 | 1.00 | 0.90 | 0.90 |
Test DATA certified by TNO Technical University Delft NL. SonasSpray acoustic ceiling and wall finish tests were on a solid backing. A panel backing with air space behind the panel will change absorption; normally there is improved absorption at low frequency. Substrates likely to provide increased performance include plasterboard with the use of an air gap behind, rib deck or profiled metal sheet. Please contact Oscar Acoustics’ technical department for free design assistance.
Oscar was established in 1978; this experience enables us to provide a well detailed, quality installation that stands the test of time. From specification to installation, everything is kept in-house. Oscar Acoustics only use qualified in-house operatives who specialise in installing our systems to ensure high standards are maintained.
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.
M1 emissions classification certificate
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.
Cellulose, the primary raw ingredient of SonaSpray, contains wood, cotton and other rapidly renewable natural resources. These materials 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.
SonaSpray acoustic ceiling and wall finish insulates by creating dead air spaces macroscopically between and within the hollow cellulose fibres. Testing on actual buildings demonstrates that sprayed insulation outperforms fibreglass bats that are mechanically retained. 100mm thick U = 0.32 W/m2K
For areas such as indoor pools and ice arenas, SonaSpray K-13 Special aids in condensation control. The proper combination of SonaSpray K-13 Special and ventilation prevents condensation on metal, concrete and other surfaces. SonaSpray K-13 Special reduces ventilation requirements, saving in both the ventilation equipment investment operating costs.
SonaSpray K-13 Special acoustic ceiling and wall finish can be applied to virtually any substrate; some surfaces may need priming to control suction. Old surfaces may need a barrier coating to prevent staining from leaching out contaminants while the surface is wet. Fully cured SonaSpray K-13 Special will improve strength as well as reducing noise reverberation.
The adhesive used with SonaSpray K-13 Special acoustic ceiling and wall finish provides a strong, durable and resilient bond. When fully cured, surface strength of old plaster will typically improve.
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 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 an 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 K-13 Special acoustic ceiling and wall finish can be quickly and effectively applied to any prepared surface and construction configuration where noise reverberation is a problem. This allows minimum working down time in existing structures with abilities to meet critical deadlines in new construction. SonaSpray K-13 Special has a medium surface texture and is suited to reducing noise reverberation in large rooms and halls. When applying to walls, position acoustic finishes above head height. For lower walls or areas of high impact, see EchoCheck acoustic blocks or Oscar Evo-Panels.
Other SonaSpray products offer a finer surface texture.
Please note that it is important not to use moisture resistant plasterboard as this can cause staining of wet applied products. Oil based stain barrier paints can be used to prevent this. Please consult Oscar Acoustics for more information.
A minimum of 12.5mm thick plasterboard, installed to British Gypsum specification should be used.
SonaSpray K-13 Special acoustic ceiling and wall finish can be over-painted (consult Oscar Acoustics technical department before painting as noise reverberation controlling properties can be significantly reduced if applied incorrectly), or applied with additional coats of SonaSpray. Small areas of damage can be repaired by hand.
If SonaSpray K-13 Special acoustic ceiling and wall finish 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.
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 Dulux paint reference and we will respond with quantity, price and colour samples.
SonaSpray is manufactured by ICC, Houston, Tx
ISO 9001: 2000 certification
