Acospray DC3
Acospray DC3
NRC 0.55–0.95
Manufacturer
Acosorb
Acosorb (Acosorb GmbH, Bocholt) develops and applies seamless acoustic spray and gypsum plasters (acoustical plaster). The jointless wall and ceiling surfaces absorb sound, reduce reverberation, and keep a continuous look, with no visible joints, grids, or tiles. The spray plasters (Acospray range) consist of enriched, partly recycled cellulose fibers with a water-based binder and are sprayed on in several crosswise layers. Acoplaster F combines a noncombustible mineral wool board with an acoustic plaster top layer. Sound absorption depends on layer thickness and build-up. The materials are vapor-permeable and hygroscopic (usable even in swimming pools and semi-outdoor areas), Cradle to Cradle Bronze certified, and documented by an ISO 14025 EPD (MRPI) and VOC test evidence from Fraunhofer. Member of the DGNB. Reference projects in Germany and the Netherlands.
Documents
Description
Acospray DC3 is Acosorb's standard spray plaster for acoustic surfaces, combining enriched, recycled cellulose fibers with a binder. Applied to walls and ceilings in a range of layer thicknesses, it forms seamless surfaces with a coarse-grained spray texture. Swimming pools and semi-outdoor areas are also possible locations for the vapor-permeable, hygroscopic plaster. A Green Line recyclate version of DC3 comes in two colors.
Technical data
Measurement data
Sound absorption
Reverberation chamber (ASTM C423 / ISO 354)· 6 variants
Frequency values
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| Compare | Value | |
|---|---|---|
| 1.4 in | NRC0.95 | |
| 0.98 in | NRC0.85 | |
| 1.2 in | NRC0.80 | |
| 0.79 in | NRC0.75 | |
| 0.59 in | NRC0.70 | |
| 0.39 in | NRC0.55 |
Test report: R031132aa.00001
NRC: 0.95 (approximated from ISO 354 octave-band data)
Institute: LBP|SIGHT
Measurement date: 09/13/2011
Distance: Direct (no gap)
Measured values as a table (6 measurements)
| Build-up | NRC | 100 Hz | 125 Hz | 160 Hz | 200 Hz | 250 Hz | 315 Hz | 400 Hz | 500 Hz | 630 Hz | 800 Hz | 1000 Hz | 1250 Hz | 1600 Hz | 2000 Hz | 2500 Hz | 3150 Hz | 4000 Hz | 5000 Hz |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 0.39 in · Direct (no gap) | 0.55 | – | 0.12 | – | – | 0.19 | – | – | 0.44 | – | – | 0.80 | – | – | 0.81 | – | – | 0.99 | – |
| 0.59 in · Direct (no gap) | 0.70 | – | 0.14 | – | – | 0.25 | – | – | 0.60 | – | – | 0.95 | – | – | 0.97 | – | – | 1.01 | – |
| 0.79 in · Direct (no gap) | 0.75 | – | 0.20 | – | – | 0.31 | – | – | 0.74 | – | – | 1.00 | – | – | 1.02 | – | – | 1.04 | – |
| 0.98 in · Direct (no gap) | 0.85 | – | 0.23 | – | – | 0.49 | – | – | 0.92 | – | – | 1.06 | – | – | 1.02 | – | – | 1.01 | – |
| 1.4 in · Direct (no gap) | 0.95 | – | 0.32 | – | – | 0.73 | – | – | 0.97 | – | – | 1.02 | – | – | 1.00 | – | – | 0.94 | – |
| 1.2 in · Direct (no gap) | 0.80 | 0.18 | 0.36 | 0.37 | 0.47 | 0.54 | 0.56 | 0.68 | 0.75 | 0.83 | 0.93 | 0.95 | 1.02 | 1.01 | 1.01 | 0.99 | 0.99 | 0.99 | 1.00 |
Measured values as a table (6 measurements)
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