NBS Specifications

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SonaSpray fc
Spray on one coat acoustic finish for noise reverberation control.

Lightly textured firm surface. Standard colours white and arctic white. Almost any colour can be made to order.

Coating thickness up to 20mm, typically sprayed at 12 - 20mm to achieve
acoustic performance
Weight 2.6kg/m.sq at 20mm thick.

Fire classification Class 1 to BS476 Part 7. Class 0 to BS476 Part 6
Naturally safe recycled cellulose fibre.  Low Embodied Energy. Dispose of as non-hazardous waste.

Typical applications; All ceilings / soffits / walls above 2.5metres.
Noise reverberation control for schools, offices, receptions, meeting rooms, churches.

Absorption coefficients at 20mm thick

Hz      250     500     1000     2000     4000            NRC
aS      0.34     0.85    0.99      1.04      1.04             0.80

See literature or website for full details
Consult Oscar Acoustics technical literature for details. Oscar Acoustics can also advise with design and specification and it is recommended that they are consulted early in the design process. 

120 SPRAYED NOISE REVERBERATION CONTROL COATING TO . . . . . . .

Survey: Carry out before installation commences.

Preparation:
Clips, hangers, supports and associated type attachments to be placed by others prior to spray application.

Ducts, piping and other suspended items to be installed after SonaSpray application or consult contractor.

Pattresses to be installed for light fittings / smoke sensors etc prior to SonaSpray application to allow firm fixing for the fitting. Pattresses to be made from plasterboard or wood not MDF which can stain the material when wet.
Wood pattresses to be fully painted to prevent any staining of material from contaminents.

Pattresses to be slightly smaller than the base of the fitting to ensure the fitting covers the pattress which should not be seen.

Pattresses to be the same thickness as the SonaSpray, the contractor to spray to the edge of the pattress and brush clean the face.

A finishing edge will be required for the SonaSpray where it does not occur naturally eg. around an opening for services to pass through a ceiling or around a staircase opening. Consult with the contractor.

The surface to be sprayed shall be inspected prior to application to determine if priming/sealing is required to ensure bond and/or to prevent discolouration by migratory stains. Prime seal accordingly. Consult with the contractor.
The contractor must install as necessary protection to other finished surfaces from overspray.

The manufacturer recommends 8 air changes per hour immediately after spraying for best drying conditions. Where this does not occur naturally, introduce fans and open windows. Consult with the contractor.
Consult with Oscar Acoustics for recommendations and details.

Barrier/ Bonding coat: Consult with Oscar Acoustics for recommendations and details.

Coating material:

Product reference: SonaSpray fc
Colour: White / Arctic White.
Standard colours. Consult with Oscar Acoustics for availability of colours and to obtain samples.
Surface finish: Lightly textured
Minimum applied thickness:
Coating thickness up to 20mm, typically sprayed at 12 - 20mm to achieve
acoustic performance. Consult with Oscar Acoustics for recommendations and details.

Finishing/ Sealing coat: Consult with Oscar Acoustics for recommendations and details.