Mineral woolHighly absorbent

Data source

PTB reference data

Physikalisch-Technische Bundesanstalt

Source: C.M.Harris, Noise Control in Buildings, McGraw Hill 1994

Fiberglass blanket

Microlite

PTB reference data

Original description

Fiberglass blanket

Material properties

Manufacturer: Manville

Thickness: 1 inch, 1 1/2 inch, 2 inch, 3 inch

Wall distance: 0 mm, 25 mm, 405 mm

Measurement data

Sound absorption

ISO 354 – reverberation chamber· 20 variants

αw

0.93

Frequency values

αp per ISO 11654

f (Hz)	125	250	500	1k	2k	4k
αp	0.40	1.00	1.05	1.00	1.00	1.10

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Compare				Value
	3 inches	0.15 lb/ft²	25 mm	αw0.93
	2 inches	0.10 lb/ft²	405 mm	αw0.85
	2 inches	0.10 lb/ft²	25 mm	αw0.83
	2 inches	0.10 lb/ft²	0	αw0.79
	1 inch	0.25 lb/ft²	405 mm	αw0.77
	1 1/2 inch	0.08 lb/ft²	405 mm	αw0.76
	1 inch	0.17 lb/ft²	25 mm	αw0.75
	1 1/2 inch	0.08 lb/ft²	0	αw0.73
	1 inch	0.13 lb/ft²	405 mm	αw0.73
	1 inch	0.25 lb/ft²	0	αw0.72
	1 inch	0.17 lb/ft²	405 mm	αw0.72
	1 1/2 inch	0.08 lb/ft²	25 mm	αw0.71
	1 inch	0.13 lb/ft²	25 mm	αw0.70
	1 inch	0.17 lb/ft²	0	αw0.66
	1 inch	0.05 lb/ft²	405 mm	αw0.66
	1 inch	0.08 lb/ft²	25 mm	αw0.64
	1 inch	0.08 lb/ft²	405 mm	αw0.63
	1 inch	0.05 lb/ft²	25 mm	αw0.59
	1 inch	0.05 lb/ft²	0	αw0.57
	1 inch	0.08 lb/ft²	0	αw0.57

Dimensions: roll