Acoustic ceiling

Categories: Interior constructionCeilingAcoustic ceilings
Product description

Suspended ceilings have a considerable influence on the acoustic performance of a space and should be designed in such a way as to address the aural demands of the occupants within. Perceived sound level and acoustic comfort are determined by the source of the sound and the level of reflection on room surfaces. These sound reflections can be uncomfortable for occupants as they distort sound. Kreon ceiling solutions offer a range of materials within their tiles, which in combination with a specified perforation, can be used to control reflections and assist in containing sound within designated zones. Sound reflection control is a factor of material sound absorption, and sound containment is controlled by attenuation or sound blocking.

Sound absorption
Sound absorption is the ability of a surface to absorb sound, minimizing sound reflection in the room. Reflected sounds create undesired and uncomfortable reverberations throughout the area and will ultimately increase the perceived sound level. Kreon suspended ceilings are an important factor in reducing these undesired reflections through the use of sound absorbing materials, combined with the perforations in the ceiling allowing the sound to pass through. The sound absorption coefficient αW is the fraction of the total sound that is absorbed by the suspended ceiling. The remaining unabsorbed fraction is reflected back into the room. The sound absorption coefficient has a value between 0,0 (no absorption - all the sound is reflected) and 1,0 (complete absorption - equivalent to an open window). The absorption factor is measured according EN20354:2003 and EN11654:1997 Kreon ceilings are available in different perforations equipped with an acoustic fleece. Shrinkwrapped wool inlays are available as an option to further improve the acoustic performance. The absorption factor for different combinations of perforations and acoustic options ranges from 0,45 (standard perforation, 100mm non-perfo border, acoustic fleece) to 1,00 (standard perforation, full-perfo field, sealed mineral wool inlay)
■ Absorption factor 0,45 – 1,00
■ Different perforation types and perforation fields
■ Standard acoustic fleece
■ Optional sealed mineral wool inlay

Sound attenuation
Suspended ceilings are often chosen due to their high flexibility. Working with modular separation walls that only reach to the suspended ceiling, sound isolation between adjacent rooms can be inadequate. Without extra measures, traditional suspended ceilings offer insufficient sound attenuation from room to room. The sound attenuation between adjacent rooms is measured according EN20140-9 and EN150717/1 and is expressed as Dn,c,w in dB.
■ Sound attenuation up to 47 dB
■ Standard acoustic fleece
■ Optional sealed mineral wool inlay
■ Optional gypsum inlay 9.5/12.5mm

shades of grey

Kreon, Belgium

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for Acoustic ceiling

File formatFile nameSizeDownload
PDFCeiling-Solutions-2017-DE_171130_104654.pdf15.18 MB
PDFCeiling-Solutions-2017-EN.pdf15.124 MB
PDFKreon-Acoustics.pdf292.148 KB

by Kreon

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