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General Information

Koral combines an attractive micro-textured white surface with excellent acoustics, and good functionality in a range of areas.
Rockfon Koral is available in a variety of formats suitable for many applications. The micro-textured, painted white surface ensures high sound absorption and provides the freedom to work with individual and straight forward ceiling designs.

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.

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 (Flexural Tensile Strength)
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.
Koral 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, 86% diffuse light reflection in accordance with ISO 7724-2.

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.

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

The tiles can be treated with Rockfon finishing paint, PVA water-based special paint with safety code 00-1, applied in the correct amount with an airless spray with good capacity. 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. The painting of acoustic tiles reduces the sound absorption by approximately 10%.

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


Datasheet Rockfon Koral

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Rockfon Teknik Şartnameler Koral 15mm - Word

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Rockfon Teknik Şartnameler Koral E15S8 15mm Cmm Ultraline- Word

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Rockfon Teknik Şartnameler Koral E15S8 15mm Cmm Ultraline- PDF

Rockfon Teknik Şartnameler Koral E24S8 15mm - Word

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Rockfon Koral Datasheet - PDF

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