SonaSpray fcx - Acoustic plaster

SonaSpray fcx - Acoustic plaster

Oscar Acoustics Third party certifications:
  • QA Certificate

    QA Certificate

    Certificate type

Sprayed and trowelled flat finish with attractive lightly pitted surface.

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Acoustic plaster ideal for noise reverberation control in offices, homes, swimming pools, public places, classrooms, restaurants etc.

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 12.5 mm thick plasterboard, installed to British Gypsum specification should be used.

Acoustic spray application by Oscar Acoustics trained in-house teams. Consult Oscar Acoustics for relevant acoustic plaster preparation details.


Sprayed and trowelled, flat acoustic plaster finish with an attractive, lightly pitted, seamless surface for noise reverberation control.

A flat, very lightly pitted surface coating. Naturally safe, recycled cellulose fibre, with low embodied energy. Can be disposed of as non-hazardous waste. Acoustic plaster can be applied directly onto plasterboard, smooth concrete, steel sheet and most other surfaces. Suitable for flat, domed and vaulted soffits.

An excellent alternative to acoustic panel ceilings without design compromise.

Features and benefits:

  • SonaSpray is a recycled acoustic spray and acoustic plaster product range that not only satisfy sustainable design certification systems like BREEAM, SKA, Living Building Challenge and LEED, they also tick every box for indoor environmental and air quality.
  • SonaSpray acoustic sprays and acoustic plasters are M1 Classified as Low Emitting Building Materials (the top achievable class), 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 acoustic spray and acoustic plaster range is also covered by an Environmental Product Declaration in accordance with ISO 14025.
  • All these credentials enable the SonaSpray acoustic spray and acoustic plaster range to contribute towards satisfying many features under the WELL Building Standard®: an international performance-based system for measuring, certifying and monitoring features of the built environment that impact human health and wellbeing, through air, water, nourishment, light, fitness, comfort and mind, with a mission to improve human health and wellbeing through the built environment.
  • The acoustic plaster adhesive provides a strong, durable and resilient bond.
  • Acoustic plaster can be applied to virtually any substrate configuration.
  • Noise reduction insulation insulates by creating dead air macroscopic spaces between and within the hollow cellulose fibres.

Fire rating:

B-s1,d0 & Class 0 to BS476 - 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.


  • M1 emission class certified for building materials (best class).
  • Compliant with CDPH/CA Section 01350.
  • GREENGUARD Gold Certified for Indoor Air Quality.
  • BREEAM rating system HEA Indoor Air Quality.
  • WELL Building Standard®.

Environmental Standards:

  • Environmental Product Declaration in accordance with ISO 14025 - EN 15804. Living Building Challenge compliant.
  • Living Building Challenge compliant.
  • LEED.
  • SKA.

Flange Fittings:

90% of flangeless fittings do not work properly with any acoustic finish. If you are specifying a flangless fitting, please contact Oscar Acoustics for advice.

Sound absorption:

Acoustic testing has been carried out against concrete. 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.

General information








Recycled high grade.

Uniclass 2015

Ss_25_45_85_85 Sprayed internal monolithic coating systemsPrimary


M22/120 Sprayed

Specification data - Sprayed internal monolithic coating systems Enhanced data


In accordance with OEL3 Oscar pre-start check list.



Binding agent

Water based adhesives.


R 0.03 per mm (W/m·K).



Bespoke access hatches.

Oscar Evo-Blade razor edge trim.

Recessed light Halos (flanged fitting only).

For downlighters, etc. Can be specially manufactured by Oscar for each project.


Stop bead.

Product Reference

SonaSpray fcx trowel finish

SonaSpray fcx lightly stippled finish


Arctic white.

Held in stock.


To order.

Special order.

Bespoke colours are available, minimum quantities apply.

System manufacturer



6 mm.

10 mm.

13 mm.

19 mm.


1.35 kg/m².

6 mm.

2.25 kg/m².

10 mm.

2.925 kg/m².

13 mm.

4.275 kg/m².

19 mm.

Sound absorption coefficient

To BS EN ISO 354 at 125 Hz: 0.05, at 250 Hz: 0.10, at 500 Hz: 0.40, at 1 kHz: 0.70, at 2 kHz: 0.85, at 4 kHz: 0.90.

6 mm.

To BS EN ISO 354 at 125 Hz: 0.10, at 250 Hz: 0.25, at 500 Hz: 0.60, at 1 kHz: 0.75, at 2 kHz: 0.85, at 4 kHz: 0.70.

10 mm.

To BS EN ISO 354 at 125 Hz: 0.05, at 250 Hz: 0.15, at 500 Hz: 0.50, at 1 kHz: 0.90, at 2 kHz: 1.00, at 4 kHz: 1.00.

13 mm.

To BS EN ISO 354 at 125 Hz: 0.15, at 250 Hz: 0.45, at 500 Hz: 0.80, at 1 kHz: 0.85, at 2 kHz: 0.85, at 4 kHz: 0.95.

19 mm.

Noise reduction coefficient


6 mm.


10 mm.


13 mm.


19 mm.

Weighted sound absorption coefficient

0.40 αw.

6 mm.

0.55 αw.

10 mm.

0.40 αw.

6 mm.

0.75 αw.

19 mm.

Environmental information

Country of material origin

United States

Country of product manufacture

United States

Embodied carbon


Recycled content


SonaSpray fibres are made up of minimum 80% post-consumer recycled high grade paper.

Digital objects
Platform Compatible Version Certified to




Revit 2016


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