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Sonar Activity

General Information


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Sonar Activity Details

Sonar Activity is designed for classrooms and open plan offices where speech intelligibility is crucial and noise and activity levels are very high.
The 40mm thickness and the high degree of sound absorption provided by Sonar Activity makes direct installation onto soffits possible – maximising ceiling height whilst still achieving Class A sound absorption.

Acoustics – Sound Absorption
Sound absorption has been measured in accordance with ISO 354. Sound absorption data ap, aw and absorption class are calculated in accordance with ISO 11654. Noise Reduction Coefficient (NRC) is calculated in accordance with ASTM C423.The best sound absorption :
αw: 1,00 and
NRC: 1,00

Fire Performance
Rockfon ceiling tiles have a core of stone wool. Stone wool is noncombustible with a melting point of more than 1000°C. 
Reaction to fire: 
Class A1 in accordance with EN 13501-1.
Fire protection: 
The fire resistant properties of stone wool ensure Rockfon ceiling tiles provide fire protection in construction. The fire protection properties of Rockfon ceilings have been tested and classified in accordance with European norm EN 13501-2 and/or national norms depending on requirements in national building codes.

Humidity Resistance And Dimensional Stability
Rockfon ceiling tiles are dimensionally stable even at humidity levels of up to 100% RH and can be installed at all temperatures ranging from 0ºC to 40°C.
No acclimatisation is necessary.Sonar Activity is predominantly classified as Class 1/C/0N in accordance with EN 13964. However, certain module sizes (width above 700mm) are Class 2/C/0N.

Light Reflection
White, 85% diffuse light reflection in accordance with ISO 7724-2.

Thermal Conductivity
Sonar Activity with a thickness equal to and exceeding 30mm has been measured in
accordance with EN 12667 and has obtained the following value: λD = 40 mW/mK.
Thermal resistance: R = 1.00 m2 K/W.

The surface can be vacuum cleaned with a soft brush attachment.The surface can also be cleaned once a week using a sponge or cloth and warm water (max. 40°C) with a slightly alkaline detergent (max. pH 10) without alcohol, ammonia or chlorine. Cleaning with a damp sponge or cloth may render the surface slightly shinier and we therefore recommend cleaning the whole surface evenly for best results.

Clean Room Classification
Sonar Activity is classified as Class 5 in accordance with ISO 14644-1.

Stone wool has no nutritional value and therefore it provides no sustenance to harmful micro-organisms.

The tiles can be post factory treated with a re-finishing paint, e.g. a PVA water based latex paint. The paint should be applied with an airless spray in a low amount (no brushing or rolling). Rockfon advises the use of the smallest amount of paint in order to minimise reduction in sound absorption. The surface of the tiles must be clean and dry and the existing paint surface must be firmly adhered to the tile prior to refinishing.Heavily discoloured tiles should be replaced.Disclaimer: The application of refinishing paint will influence acoustic properties and fire safety performance. Rockfon takes no responsibility for these properties after treatment.

A representative selection of Rockfon products have been awarded the Indoor Climate Label and the Finnish Indoor Climate Label (M1).Sonar Activity is recyclable.

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