Mineral woolHighly absorbent
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: H. Lenz, Marktübersicht schallabsorbierende Anordnungen, Ruhr Universität Bochum, 1981, Seite 258
Value from the PTB table, not verified
Egi mineral fiber facade insulation panel EFP
Egi-Fassadendämmplatte – EFP
PTB reference data
Original description
Egi mineral fiber facade insulation panel EFP
Material properties
Manufacturer: Thyssen Schalker Verein GmbH
Thickness: 2 in
Wall distance: 0 in
Surface: water-repellent due to special impregnation
Up to fire class: non-combustible
Measurement data
Sound absorption
Reverberation chamber (ASTM C423 / ISO 354)
NRC
0.90
derived from ISO 354 lab data
Frequency values
αp nach ISO 11654
| f (Hz) | 125 | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|---|
| αp | 0.25 | 0.60 | 1.00 | 1.00 | 0.95 | 1.00 |
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Value from the PTB table, not verified
NRC: 0.90 (derived from ISO 354 lab data)
Measured values as a table (1 measurement)
| Build-up | NRC | 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 50 mm · 0 | 0.90 | 0.13 | 0.41 | 0.44 | 0.63 | 0.78 | 0.93 | 1.03 | 1.02 | 1.04 | 0.97 | 0.95 | 0.93 | 0.97 | 0.99 | 0.98 | 0.98 |
Measured values as a table (1 measurement)
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