Acosorb (Acosorb GmbH, Bocholt) develops and applies seamless acoustic spray and trowel plasters (acoustic plaster). The jointless wall and ceiling surfaces absorb sound and reduce reverberation while staying visually closed, with no visible joints, grids or cassettes. The spray plasters (Acospray range) are made of enriched, partly recycled cellulose fibres with a water-based binder and are applied in several cross-sprayed layers; Acoplaster F combines a non-combustible mineral-wool board with an acoustic-plaster top layer. Depending on layer thickness and build-up, absorption reaches up to the highest absorption class A. The materials are open to diffusion and hygroscopic (usable down to swimming pools and semi-outdoor areas), Cradle to Cradle Bronze certified and documented via an ISO 14025 EPD (MRPI) and Fraunhofer VOC verifications. Member of the DGNB. Reference projects in Germany and the Netherlands.
WebsiteAcosorb Green Line
The Acosorb Green Line is the most sustainable version of the Acospray range: an acoustic spray plaster made from 100 % post-consumer recyclate (recycled cellulose fibres). Available in the recyclate shades Apple Grey, Billboard Grey, Hong Kong Grey and India Yellow. Acoustically the Green Line matches its respective base spray plaster. The absorption values stored here are those of the DC3 base (coarse-grained spray texture, 10–50 mm); for the fine DC2 versions (India Yellow, Hong Kong Grey) the DC2 values apply.
ISO 354 – reverberation chamber· 5 variants
αp per ISO 11654
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| Compare | Value | |
|---|---|---|
| 35 mm | αw1.00 | |
| 25 mm | αw0.75 | |
| 20 mm | αw0.60 | |
| 15 mm | αw0.55 | |
| 10 mm | αw0.45 |
Absorber class: A
NRC: 0.95
Distance: Direct (no gap)
