Acospray DC2 1.0

Name: Acospray DC2 1.0
Brand: Acosorb

NRC 0.50–0.85

WallCeiling

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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.

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Datasheet

Description

Acospray DC2 1.0 from Acosorb is a spray-applied acoustic plaster based on recycled, enriched cellulose fibers and a binder. Sprayed onto wall and ceiling substrates in a range of layer thicknesses, it leaves seamless surfaces with a fine spray texture. The vapor-permeable, hygroscopic finish can also be used in swimming pools and semi-outdoor areas. DC2 1.0 is also made as a Green Line recyclate version in two colors.

Technical data

Material: Acoustic spray plaster of recycled, enriched cellulose fibres and a binder

Surface: fine spray texture; open to diffusion

Fire class (EN 13501-1): Low flammability (B-s1,d0) per DIN EN 13501-1 · Efectis 1350-1:2018; borate-free version B-s2,d0

Application: seamless wall and ceiling surfaces; also swimming pools and semi-outdoor areas

Certifications: Cradle to Cradle Bronze; ISO 14025 EPD (MRPI); VOC Fraunhofer DIN EN 16516; microbially resistant (Intertek ASTM C1338-19); fire class B-s1,d0 (Efectis); no continuous smouldering (Kiwa EN 16733)

Colours: white, cool grey, ILA (concrete) grey, oman grey, black; Green Line recyclate: India Yellow, Hong Kong Grey

Measurement data

Sound absorption

Reverberation chamber (ASTM C423 / ISO 354)· 4 variants

NRC

0.85

Frequency values

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Compare		Value
	1.7 in	NRC0.85
	1.3 in	NRC0.80
	0.59 in	NRC0.75
	0.2 in	NRC0.50

Test report: TNO 2012 R10881

NRC: 0.85 (derived from ISO 354 lab data)

Institute: TNO

Measurement date: 08/01/2012

Room volume: 7,063 cu ft

Object area: 113 sq ft

Distance: Direct (no gap)

Measured values as a table (4 measurements)

Acospray DC2 1.0: sound absorption coefficient αs per ISO 354 by frequency and test build-up
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
0.2 in · Direct (no gap)	0.50	–	0.11	–	–	0.17	–	–	0.39	–	–	0.69	–	–	0.67	–	–	0.82	–
0.59 in · Direct (no gap)	0.75	0.06	0.14	0.19	0.25	0.33	0.43	0.62	0.78	0.92	1.01	0.96	1.05	0.99	0.97	1.02	1.01	0.99	1.06
1.3 in · Direct (no gap)	0.80	0.19	0.22	0.31	0.41	0.58	0.78	0.81	0.83	0.82	0.90	0.92	0.90	0.95	0.96	1.00	0.99	0.94	0.97
1.7 in · Direct (no gap)	0.85	0.24	0.23	0.35	0.57	0.68	0.77	0.79	0.83	0.90	0.95	0.93	0.94	1.00	0.98	1.01	1.01	1.04	1.04

Measured values as a table (4 measurements)

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Last updated: 11/03/2026

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