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Acoplaster F

Acoplaster F

NRC 0.90

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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Documents

Datasheet

Description

Acosorb's Acoplaster F is a two-part acoustic plaster system that produces a smooth, texture-free finish. A mineral wool board is bonded to the wall or ceiling substrate and covered with a thin coat of cellulose-based acoustic plaster, creating seamless surfaces. Typical uses include public and shared spaces, sports halls, restaurants, offices and churches, and the vapor-permeable, hygroscopic system can also be used in swimming pools.

Technical data

Material: Acoustic-plaster system: non-combustible mineral-wool board (1.2 in) + acoustic-plaster top layer (around 80 % cellulose)
Surface: finest, structureless smooth finish; open to diffusion
Fire class (EN 13501-1): Low flammability (B-s2,d0) per DIN EN 13501-1 · Efectis, EN 13501-1 (1350-1:2018)
Application: seamless wall and ceiling surfaces in shared and public spaces, sports halls, restaurants, offices, churches; down to swimming pools
Certifications: Cradle to Cradle Bronze; ISO 14025 EPD (MRPI); VOC Fraunhofer DIN EN 16516; fire class B-s2,d0 (Efectis)
Colours: white and almost any specified colour (pigmented in the binder)

Measurement data

Sound absorption

Reverberation chamber (ASTM C423 / ISO 354)

NRC
0.90
approximated from ISO 354 octave-band data

Frequency values

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Method (354): Measured

Mounting type: Type A – Direct on rigid wall (ASTM E795: A mounting, direct)

Room volume: 7,628 cu ft

Object area: 113 sq ft

Measurement date (354): 08/17/2012

Test report: R031132aa.00003

NRC: 0.90 (approximated from ISO 354 octave-band data)

Terms of use
Measured values as a table (1 measurement)
Acoplaster F: sound absorption coefficient αs per ISO 354 by frequency and test build-up
Build-upNRC125 Hz250 Hz500 Hz1000 Hz2000 Hz4000 Hz
1.3 in (System) · 1.2 in mineral wool + 0.08 in plaster0.900.280.771.000.950.920.91
Measured values as a table (1 measurement)

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