GypsumHigh-frequency absorber
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: Herstellerangabe www.knauf.de
Knauf P 142 acoustic plaster, gypsum-bound
Knauf Akustikputz – P 142
PTB reference data
Original description
Knauf P 142 acoustic plaster, gypsum-bound
Material properties
Manufacturer: Knauf Headquarters Iphofen
Wall distance: 0 mm, 60 mm
Up to fire class: A1
Application: ceiling
Mounting: directly on solid ceiling; on gypsum board ceiling facing
Measurement data
Sound absorption
ISO 354 – reverberation chamber· 2 variants
αw
0.45
Frequency values
αp per ISO 11654
| f (Hz) | 125 | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|---|
| αp | 0.15 | 0.15 | 0.20 | 0.40 | 0.70 | 1.00 |
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| Compare | Value | |
|---|---|---|
| 60 mm, on Deckenbekleidung from Gipsplatten | αw0.45 | |
| 0, direkt on Massivdecke | αw0.43 |
Weight / density: ca. 3 kg / m² at 15 mm Schichtdicke
