Mineral woolHighly absorbent
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: C.M.Harris, Noise Control in Buildings, McGraw Hill 1994
Value from the PTB table, not verified
Fiberglass blanket, max width: 72 inch, max length: 150 inch
Metal building insulation
PTB reference data
Original description
Fiberglass blanket, max width: 72 inch, max length: 150 inch
Material properties
Manufacturer: Knauf Fiber Glass
Thickness: 2 inch, 3 inch, 4 inch, 6 inch
Wall distance: 0 mm
Application: Metal building insulation
Measurement data
Sound absorption
ISO 354 – reverberation chamber· 4 variants
αw
1.00
Frequency values
αp per ISO 11654
| f (Hz) | 125 | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|---|
| αp | 0.35 | 0.75 | 1.00 | 0.95 | 1.00 | 1.00 |
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| Compare | Value | ||
|---|---|---|---|
| 3 inch | 0.16 lb/ft² | αw1.00 | |
| 4 inch | 0.22 lb/ft² | αw1.00 | |
| 6 inch | 0.33 lb/ft² | αw1.00 | |
| 2 inch | 0.11 lb/ft² | αw0.80 |
Dimensions: roll
Distance: 0
Measured values as a table (4 measurements)
| Build-up | αw | 125 Hz | 250 Hz | 500 Hz | 1000 Hz | 2000 Hz | 4000 Hz |
|---|---|---|---|---|---|---|---|
| 2 inch · 0.11 lb/ft² · 0 | 0.80 | 0.25 | 0.48 | 0.81 | 0.90 | 0.97 | 0.94 |
| 3 inch · 0.16 lb/ft² · 0 | 1.00 | 0.36 | 0.76 | 1.04 | 0.94 | 0.98 | 1.00 |
| 4 inch · 0.22 lb/ft² · 0 | 1.00 | 0.59 | 1.01 | 0.97 | 0.96 | 1.06 | 1.08 |
| 6 inch · 0.33 lb/ft² · 0 | 1.00 | 1.18 | 1.36 | 1.02 | 1.02 | 1.12 | 1.07 |
Measured values as a table (4 measurements)
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