Fiberglass, Rockwool, Polyester, and Cotton Absorption Coefficients

0.00 = no absorbtion.
0.50 = 50% absorbtion.
1.00 = 100% absorbtion.

Measurements are done according to a standard test method such as ASTM C423 or ISO. "In some cases, the measured sound absorption coefficient is greater than 1.00. As recommended by the test method, these values are reported as measured and not adjusted."
"Differences in coefficients of less than 0.15 are not significant."

Owens Corning 700 series Rigid Fiberglass

Product thickness mounting density 125hz 250hz 500hz 1000hz 2000hz 4000hz NRC
701, plain 1" (25mm) on wall 1.5 pcf (24 kg/m3) 0.17 0.33 0.64 0.83 0.90 0.92 0.70
703, plain 1" (25mm) on wall 3.0 pcf (48 kg/m3) 0.11 0.28 0.68 0.90 0.93 0.96 0.70
705, plain 1" (25mm) on wall 6.0 pcf (96 kg/m3) 0.02 0.27 0.63 0.85 0.93 0.95 0.65
701, plain 2" (51mm) on wall 1.5 pcf (24 kg/m3) 0.22 0.67 0.98 1.02 0.98 1.00 0.90
703, plain 2" (51mm) on wall 3.0 pcf (48 kg/m3) 0.17 0.86 1.14 1.07 1.02 0.98 1.00
705, plain 2" (51mm) on wall 6.0 pcf (96 kg/m3) 0.16 0.71 1.02 1.01 0.99 0.99 0.95
701, plain 3" (76mm) on wall 1.5 pcf (24 kg/m3) 0.43 1.17 1.26 1.09 1.03 1.04 1.15
703, plain 3" (76mm) on wall 3.0 pcf (48 kg/m3) 0.53 1.19 1.21 1.08 1.01 1.04 1.10
705, plain 3" (76mm) on wall 6.0 pcf (96 kg/m3) 0.54 1.12 1.23 1.07 1.01 1.05 1.10
701, plain 4" (102mm) on wall 1.5 pcf (24 kg/m3) 0.73 1.29 1.22 1.06 1.00 0.97 1.15
703, plain 4" (102mm) on wall 3.0 pcf (48 kg/m3) 0.84 1.24 1.24 1.08 1.00 0.97 1.15
705, plain 4" (102mm) on wall 6.0 pcf (96 kg/m3) 0.75 1.19 1.17 1.05 0.97 0.98 1.10
703, plain 6" (152mm) on wall 3.0 pcf (48 kg/m3) 1.19 1.21 1.13 1.05 1.04 1.04
703, FRK 1" (25mm) on wall 3.0 pcf (48 kg/m3) 0.18 0.75 0.58 0.72 0.62 0.35 0.65
705, FRK 1" (25mm) on wall 6.0 pcf (96 kg/m3) 0.27 0.66 0.33 0.66 0.51 0.41 0.55
703, FRK 2" (51mm) on wall 3.0 pcf (48 kg/m3) 0.63 0.56 0.95 0.79 0.60 0.35 0.75
705, FRK 2" (51mm) on wall 6.0 pcf (96 kg/m3) 0.60 0.50 0.63 0.82 0.45 0.34 0.60
703, FRK 3" (76mm) on wall 3.0 pcf (48 kg/m3) 0.84 0.88 0.86 0.71 0.52 0.26
705, FRK 3" (76mm) on wall 6.0 pcf (96 kg/m3) 0.66 0.46 0.47 0.40 0.52 0.31
703, FRK 4" (102mm) on wall 3.0 pcf (48 kg/m3) 0.88 0.90 0.84 0.71 0.49 0.23
705, FRK 4" (102mm) on wall 6.0 pcf (96 kg/m3) 0.65 0.52 0.42 0.36 0.49 0.31
703, ASJ 1" (25mm) on wall 3.0 pcf (48 kg/m3) 0.17 0.71 0.59 0.68 0.54 0.30 0.65
705, ASJ 1" (25mm) on wall 6.0 pcf (96 kg/m3) 0.20 0.64 0.33 0.56 0.54 0.33 0.50
703, ASJ 2" (51mm) on wall 3.0 pcf (48 kg/m3) 0.47 0.62 1.01 0.81 0.51 0.32 0.75
705, ASJ 2" (51mm) on wall 6.0 pcf (96 kg/m3) 0.58 0.49 0.73 0.76 0.55 0.35 0.65
701, plain 1" (25mm) 16" air 1.5 pcf (24 kg/m3) 0.56 0.85 0.70 0.89 0.93 1.06 0.85
703, plain 1" (25mm) 16" air 3.0 pcf (48 kg/m3) 0.65 0.94 0.76 0.98 1.00 1.14 0.90
705, plain 1" (25mm) 16" air 6.0 pcf (96 kg/m3) 0.68 0.91 0.78 0.97 1.05 1.18 0.95
701, plain 2" (51mm) 16" air 1.5 pcf (24 kg/m3) 0.76 1.02 0.98 1.07 1.04 1.20 1.05
703, plain 2" (51mm) 16" air 3.0 pcf (48 kg/m3) 0.66 0.95 1.06 1.11 1.09 1.18 1.05
705, plain 2" (51mm) 16" air 6.0 pcf (96 kg/m3) 0.62 0.95 0.98 1.07 1.09 1.22 1.00
701, plain 3" (76mm) 16" air 1.5 pcf (24 kg/m3) 0.77 1.08 1.16 1.09 1.05 1.18 1.10
703, plain 3" (76mm) 16" air 3.0 pcf (48 kg/m3) 0.66 0.93 1.13 1.10 1.11 1.14 1.05
705, plain 3" (76mm) 16" air 6.0 pcf (96 kg/m3) 0.66 0.92 1.11 1.12 1.10 1.19 1.05
701, plain 4" (102mm) 16" air 1.5 pcf (24 kg/m3) 0.87 1.14 1.24 1.17 1.18 1.28 1.20
703, plain 4" (102mm) 16" air 3.0 pcf (48 kg/m3) 0.65 1.01 1.20 1.14 1.10 1.16 1.10
705, plain 4" (102mm) 16" air 6.0 pcf (96 kg/m3) 0.59 0.91 1.15 1.11 1.11 1.19 1.10
711, plain 1.7 pcf


Owens Corning

I'm unable to find Absorption Coefficient information on SOFTR Aeroflex Plus Acoustical Duct Liner (rolls, black on one side).
Product thickness density mounting 125hz 250hz 500hz 1000hz 2000hz 4000hz NRC
SelectSound Black 150B Blanket 1" (25mm) 1.5 pcf (24 kg/m3) 0.10 0.34 0.64 0.87 0.91 0.91 0.70
Blanket 2" (51mm) 0.27 0.80 1.12 1.07 1.02 1.01 1.00
Sound Attenuation Batts 2.5" (63mm) A on wall 0.21 0.62 0.93 0.92 0.91 1.03 0.85
Sound Attenuation Batts 3.5" (89mm) A on wall 0.48 1.00 1.12 1.03 0.97 0.96 1.05
Sound Attenuation Batts 2.5" (63mm) E-405 16" 0.59 0.84 0.79 0.94 0.96 1.12 0.90
Sound Attenuation Batts 3.5" (89mm) E-405 16" 0.73 0.98 0.98 1.05 1.08 1.15 1.00
Black Acoustic Board 1" (25mm) A 0.06 0.25 0.62 0.91 0.99 0.98 0.70
Black Acoustic Board 2" (51mm) A 0.18 0.71 1.12 1.12 1.03 1.02 1.00
Sound Attenuation Fire Batt 1.5" (38mm) 0.23 0.42 0.89 1.00 1.03 1.03 0.85
Sound Attenuation Fire Batt 2" (51mm) 0.27 0.55 1.07 1.10 1.10 1.10 0.95
Sound Attenuation Fire Batt 2.5" (63mm) 0.25 0.77 1.10 1.12 1.04 0.98 1.05
Sound Attenuation Fire Batt 3" (76mm) 0.34 0.92 1.16 1.12 1.04 0.98 1.05
Sound Attenuation Fire Batt 3.5" (89mm) 0.41 1.01 1.20 1.14 1.06 1.05 1.10
Sound Attenuation Fire Batt 4" (102mm) 0.97 1.28 1.25 1.10 1.10 1.09 1.20
Aeroflex Duct 150 150 1" (25mm) 1.5pcf (24kg/m^3) A 0.15 0.25 0.45 0.68 0.79 0.81 0.55
Aeroflex Duct 150 1.5" (38mm) 1.5pcf (24kg/m^3) A 0.16 0.36 0.61 0.83 0.90 0.92 0.70
Aeroflex Duct 150 2" (51mm) 1.5pcf (24kg/m^3) A 0.20 0.53 0.79 0.94 0.95 0.97 0.80
Aeroflex Duct 200 0.5" (13mm) 2pcf (32kg/m^3) A 0.10 0.15 0.27 0.49 0.66 0.77 0.40
Aeroflex Duct 200 1" (25mm) 2pcf (32kg/m^3) A 0.11 0.28 0.49 0.70 0.81 0.86 0.55
Aeroflex Duct 200 1.5" (38mm) 2pcf (32kg/m^3) A 0.16 0.41 0.71 0.90 1.01 0.93 0.75
Aeroflex Duct 200 2" (51mm) 2pcf (32kg/m^3) A 0.20 0.55 0.87 1.00 0.95 0.95 0.85
Aeroflex Duct R-6 1.5" (38mm) 2.75pcf (44kg/m^3) A 0.14 0.41 0.80 0.97 1.01 0.94 0.80
Aeroflex Duct 300 0.5" (13mm) 3pcf (48kg/m^3) A 0.08 0.16 0.30 0.51 0.69 0.84 0.40
Aeroflex Duct 300 1" (25mm) 3pcf (48kg/m^3) A 0.07 0.26 0.54 0.85 0.96 0.90 0.65
Product thickness 100hz 125hz 160hz 200hz 250hz 315hz 400hz 500hz 630hz 800hz 1000hz
703 FG 2" 0.18 0.21 0.33 0.50 0.76 0.94 1.10 1.16 1.17 1.17 1.15
703 3" 0.29 0.42 0.76 1.02 0.21 0.29 1.30 1.27 1.20 1.15 1.14



Owens Corning Fiberglass Batts (fluffy pink), on the wall, and 16" from the wall

Product thickness mounting 125hz 250hz 500hz 1000hz 2000hz 4000hz NRC
Unfaced 2.5" R8 on wall 0.21 0.62 0.93 0.92 0.91 1.03 0.85
Unfaced 2.5" R8 16" air 0.59 0.84 0.79 0.94 0.96 1.12 0.90
Unfaced 3.5" R11 on wall 0.34 0.85 1.09 0.97 0.97 1.12 0.95
Unfaced 3.5" R11 16" air 0.80 0.98 1.01 1.04 0.98 1.15 1.00
Paper Out 3.5" R11 on wall 0.58 1.11 1.16 0.61 0.40 0.21 0.80
Unfaced 6.25" R19 on wall 0.64 1.14 1.09 0.99 1.00 1.21 1.05
Unfaced 6.25" R19 16" air 0.96 1.03 1.13 1.02 1.04 1.13 1.05
Paper Out 6.25" R19 on wall 0.94 1.33 1.02 0.71 0.56 0.39 0.90
Unfaced 12" on wall 1.14 1.09 1.09 0.99 1.00 1.21


Roxul Rigid Rockwool

Product thickness density 125hz 250hz 500hz 1000hz 2000hz 4000hz NRC
RXL 40 1" (25mm) 7.4 pcf (118 kg/m3) 0.07 0.32 0.77 1.04 1.05 1.05 0.80
RXL 60 1" (25mm) 7.4 pcf (118 kg/m3) 0.08 0.33 0.78 1.03 1.02 1.04 0.80
RXL 80 1" (25mm) 8.0 pcf (128 kg/m3) 0.11 0.31 0.82 1.01 1.02 1.01 0.80
AFB 1" (25mm) 3.0 pcf (48 kg/m3) 0.14 0.25 0.65 0.90 1.01 1.01 0.70
RXL 40 1.5" (25mm) 4.9 pcf (79 kg/m3) 0.18 0.48 0.96 1.09 1.05 1.05 0.90
RXL 60 1.5" (25mm) 6.0 pcf (96 kg/m3) 0.17 0.62 1.00 1.05 1.01 1.01 0.90
RHF / RHT 80 1.5" (25mm) 5.9 pcf (94 kg/m3) 0.17 0.58 1.06 1.07 1.00 0.99 0.95
RXL 80 1.5" (25mm) 8.0 pcf (128 kg/m3) 0.21 0.64 0.92 1.00 0.95 1.01 0.90
AFB 1.5" (33mm) 3.0 pcf (48 kg/m3) 0.18 0.44 0.94 1.04 1.02 1.03 0.85
RHT 40 1.5" (25mm) 3.5 pcf (56 kg/m3) 0.15 0.47 0.98 1.06 1.02 1.02 0.90
RHT 60 1.5" (25mm) 4.4 pcf (70 kg/m3) 0.19 0.55 1.03 1.06 1.02 1.01 0.90
RXL 40 2" (51mm) 4.0 pcf (64 kg/m3) 0.26 0.68 1.12 1.10 1.03 1.04 1.00
RXL 60 2" (51mm) 6.0 pcf (96 kg/m3) 0.32 0.81 1.06 1.02 0.99 1.04 0.95
RHF / RHT 80 2" (51mm) 5.9 pcf (94 kg/m3) 0.39 0.84 1.08 1.01 1.02 1.01 1.00
RXL 80 2" (51mm) 8.0 pcf (128 kg/m3) 0.43 0.78 0.90 0.97 0.97 1.00 0.90
Safe 2" (51mm) 4.5 pcf (72 kg/m3) 0.26 0.68 1.12 1.10 1.03 1.04 1.00
AFB 2" (51mm) 2.5 pcf (40 kg/m3) 0.28 0.60 1.09 1.09 1.07 1.07 0.95
RHT 40 2" (51mm) 3.5 pcf (56 kg/m3) 0.26 0.68 1.14 1.13 1.06 1.07 1.00
RHT 60 2" (51mm) 4.4 pcf (70 kg/m3) 0.26 0.71 1.14 1.09 1.04 1.03 1.00
RXL 40 3" (75mm) 4.0 pcf (64 kg/m3) 0.63 0.95 1.14 1.01 1.03 1.04 1.05
RXL 60 3" (75mm) 6.0 pcf (96 kg/m3) 0.78 0.89 1.04 0.98 1.01 1.02 1.00
RHF / RHT 80 3" (75mm) 5.9 pcf (94 kg/m3) 0.68 0.92 1.08 1.03 1.03 1.03 1.10
RXL 80 3" (75mm) 8.0 pcf (128 kg/m3) 0.75 0.82 0.89 0.94 1.00 1.00 0.90
Safe‘n’Sound 3" (75mm) 2.5 pcf (40 kg/m3) 0.52 0.96 1.18 1.07 1.05 1.05 1.05
Safe 3" (76mm) 4.5 pcf (72 kg/m3) 0.63 0.95 1.14 1.01 1.03 1.04 1.05
AFB 3" (75mm) 2.5 pcf (40 kg/m3) 0.52 0.96 1.18 1.07 1.05 1.05 1.05
RHT 40 3" (75mm) 3.5 pcf (56 kg/m3) 0.62 1.03 1.20 1.10 1.08 1.10 1.10
RHT 60 3" (75mm) 4.4 pcf (70 kg/m3) 0.65 0.94 1.13 1.07 1.06 1.04 1.10
RXL 40 4" (100mm) 4.0 pcf (64 kg/m3) 1.03 1.07 1.12 1.04 1.07 1.08 1.10
RHF / RHT 80 4" (100mm) 5.9 pcf (94 kg/m3) 1.00 0.95 1.06 1.04 1.06 1.08 1.05
Safe 4" (100mm) 4.5 pcf (72 kg/m3) 1.03 1.07 1.12 1.04 1.07 1.08 1.10
AFB 4" (100mm) 2.5 pcf (40 kg/m3) 0.86 1.11 1.20 1.07 1.08 1.07 1.10
RHT 40 4" (100mm) 3.5 pcf (56 kg/m3) 1.07 1.01 1.07 1.06 1.07 1.16 1.05
RHT 60 4" (100mm) 4.4 pcf (70 kg/m3) 0.92 1.04 1.07 1.07 1.07 1.08 1.05


Rockwool.com Note, Roxul may be a Canadian/USA subsiduary of Rockwool.

Product thickness density 125hz 250hz 500hz 1000hz 2000hz 4000hz NRC
RW5 1.25" (30mm) 100kg/m3 0.10 0.40 0.80 0.90 0.90 0.90
RW3 2" (50mm) 60kg/m3 0.11 0.60 0.96 0.94 0.92 0.82
RW6 2" (50mm) 140kg/m3 0.20 0.75 0.90 0.85 0.90 0.85
RW3 3" (75mm) 60kg/m3 0.34 0.95 1.00 0.82 0.87 0.86
RW5 3" (75mm) 100kg/m3 0.40 0.75 0.90 0.80 0.90 0.85
RWA45 45kg/m3
RW5 300mm gap 1.25" (30mm) 100kg/m3 0.40 0.75 0.90 0.80 0.90 0.85
RW6 300mm gap 2" (50mm) 140kg/m3 0.65 0.55 0.75 0.85 0.75 0.85


Johns Manville or here

Dennis Erskine likes for Home Theatre
  - 1" Coated Insul-Shield Black (IS Black)
  - 1" Linacoustic (use the roll type, not sheet type)
  - Picture of Linacoustic RC 1 inch, 100 ft x 47.5 inch roll, and a bit of GoM, provided by Clarence
Rod Gervais likes Superduct for duct lining
Product thickness density 125hz 250hz 500hz 1000hz 2000hz 4000hz NRC
Linacoustic RC 0.5" (13mm) 0.07 0.20 0.44 0.66 0.84 0.93 0.55
Permacote Linacoustic Standard 0.5" (13mm) 0.03 0.21 0.45 0.72 0.87 0.94 0.55
Polyester Insultone 0.5" (13mm) 0.05 0.10 0.18 0.28 0.39 0.48 0.25
Linacoustic RC 1" (25mm) 0.08 0.31 0.64 0.84 0.97 1.03 0.70
Permacote® Linacoustic® R-300 1" (25mm) 3.0 pcf (48 kg/m3) 0.04 0.26 0.69 1.00 1.07 1.02 0.75
Permacote Linacoustic Standard 1" (25mm) 0.09 0.31 0.67 0.91 1.01 0.98 0.70
Whispertone 1" (25mm) 6.0 pcf (96 kg/m3) 0.08 0.31 0.78 1.00 1.03 1.02
IS 150 1" (25mm) 1.5pcf (24kg/m3) 0.07 0.24 0.63 0.87 1.00 1.02 0.70
IS Black 1" (25mm) 1.5pcf (24kg/m3) 0.09 0.29 0.67 0.89 1.03 0.99 0.70
IS 225 1" (25mm) 2.25pcf (36kg/m3) 0.08 0.27 0.69 0.95 1.05 1.02 0.75
IS 300 1" (25mm) 3pcf (48kg/m3) 0.06 0.29 0.75 0.99 1.04 1.02 0.75
IS 600 1" (25mm) 6pcf (96kg/m3) 0.10 0.35 0.85 1.04 1.05 1.03 0.80
Polyester Insultone 1" (25mm) 0.08 0.18 0.33 0.49 0.61 0.66 0.40
Linacoustic RC 1.5" (38mm) 0.10 0.47 0.85 1.01 1.02 0.99 0.85
Permacote® Linacoustic® R-300 1.5" (38mm) 3.0 pcf (48 kg/m3) 0.14 0.52 1.01 1.07 1.03 1.97 1.90
Permacote Linacoustic Standard 1.5" (38mm) 0.21 0.53 0.90 1.03 1.01 1.00 0.85
IS 100 1.5" (38mm) 1pcf (16kg/m3) 0.15 0.37 0.81 0.96 1.04 1.01 0.80
IS 300 1.5" (38mm) 3pcf (48kg/m3) 0.13 0.62 1.07 1.08 1.06 1.04 0.95
IS 600 1.5" (38mm) 6pcf (96kg/m3) 0.14 0.60 1.01 1.08 1.06 1.05 0.95
Linacoustic RC 2" (51mm) 0.25 0.66 1.00 1.05 1.02 1.01 0.95
Permacote® Linacoustic® R-300 2" (51mm) 3.0 pcf (48 kg/m3) 0.26 0.73 1.10 1.10 1.04 1.03 1.00
Permacote Linacoustic Standard 2" (51mm) 0.20 0.57 1.02 1.03 1.02 1.03 0.90
IS 150 2" (51mm) 1.5pcf (24kg/m3) 0.24 0.68 1.10 1.13 1.10 1.07 1.00
IS Black 2" (51mm) 1.5pcf (24kg/m3) 0.23 0.73 1.05 1.13 1.06 1.07 1.00
IS 225 2" (51mm) 2.25pcf (36kg/m3) 0.19 0.88 1.15 1.14 1.10 1.07 1.05
IS 300 2" (51mm) 3pcf (48kg/m3) 0.24 1.00 1.11 1.08 1.06 1.05 1.05
IS 600 2" (51mm) 6pcf (96kg/m3) 0.38 0.93 1.10 1.07 1.07 1.07 1.05
IS 150 FSK 2" (51mm) 1.5pcf (24kg/m3) 0.25 1.09 1.11 0.58 0.26 0.12 0.75
IS 225 FSK 2" (51mm) 2.25pcf (36kg/m3) 0.32 1.17 1.00 0.75 0.42 0.26 0.85
IS 300 FSK 2" (51mm) 3pcf (48kg/m3) 0.41 1.13 0.85 0.73 0.38 0.16 0.75
IS 600 FSK 2" (51mm) 6pcf (96kg/m3) 0.49 0.26 0.68 0.47 0.33 0.22 0.45
TheaterShield Plus
812 1" (25mm) 1.5pcf (24kg/m3) 0.07 0.24 0.63 0.87 1.00 1.02 0.70
812 2" (51mm) 1.5pcf (24kg/m3) 0.24 0.68 1.10 1.13 1.10 1.07 1.00
813 1" (25mm) 2.25pcf (36kg/m3) 0.08 0.27 0.69 0.95 1.05 1.02 0.75
813 2" (51mm) 2.25pcf (36kg/m3) 0.19 0.88 1.15 1.14 1.10 1.07 1.05
814 1" (25mm) 3pcf (48kg/m3) 0.06 0.29 0.75 0.99 1.04 1.02 0.75
814 2" (51mm) 3pcf (48kg/m3) 0.24 1.00 1.11 1.08 1.06 1.05 1.05
815 1" (25mm) 4.25pcf (68kg/m3) 0.03 0.32 0.80 1.04 1.05 1.05 0.80
815 2" (51mm) 4.25pcf (68kg/m3) 0.27 0.91 1.11 1.09 1.09 1.09 1.05
817 1" (25mm) 6pcf (96kg/m3) 0.10 0.35 0.85 1.04 1.05 1.03 0.80
817 2" (51mm) 6pcf (96kg/m3) 0.38 0.93 1.10 1.07 1.07 1.07 1.05
Spin-Glas® Board 1" (25mm) 2.25pcf (36kg/m3) 0.08 0.27 0.69 0.95 1.05 1.02 0.75
Spin-Glas® Board 2" (51mm) 2.25pcf (36kg/m3) 0.19 0.88 1.15 1.14 1.10 1.07 1.05
Spin-Glas® Board 1" (25mm) 3pcf (48kg/m3) 0.06 0.26 0.61 0.86 0.99 1.03 0.70
Spin-Glas® Board 2" (25mm) 3pcf (48kg/m3) 0.17 0.80 1.16 1.15 1.11 1.10 1.05
Spin-Glas® Board 1" (25mm) 4.25pcf (68kg/m3) 0.03 0.32 0.80 0.86 1.04 1.05 0.80
Spin-Glas® Board 2" (25mm) 4.25pcf (68kg/m3) 0.27 0.91 1.11 1.09 1.09 1.09 1.05
Spin-Glas® Board 1" (25mm) 6pcf (96.2kg/m3) 0.10 0.35 0.85 1.04 1.05 1.03 0.80
Spin-Glas® Board 2" (25mm) 6pcf (96.2kg/m3) 0.38 0.93 1.10 1.07 1.07 1.07 1.05


CertainTeed

Dennis Erskine likes for Home Theatre
  - AcoustaBlanket Black (rolls)
Product thickness density 125hz 250hz 500hz 1000hz 2000hz 4000hz NRC
ToughGard Duct Liner 200 0.5" (13mm) 0.04 0.10 0.24 0.41 0.56 0.73 0.35
ToughGard 2 Duct Liner 200 0.5" (13mm) 0.06 0.15 0.33 0.56 0.76 0.91 0.45
ToughGard Duct Liner 300 0.5" (13mm) 0.05 0.12 0.29 0.51 0.68 0.80 0.40
ToughGard 2 Duct Liner 300 0.5" (13mm) 0.05 0.12 0.29 0.51 0.68 0.80 0.40
AcoustaBlanket Black 200 0.5" (13mm) 2.0pcf (32kg/m3) 0.03 0.12 0.35 0.61 0.75 0.84 0.45
OEM Acoustical Board 5/8" (16mm) 0.03 0.10 0.38 0.66 0.80 0.90 0.50
OEM 250 5/8" (16mm) 2.5 pcf 0.03 0.11 0.37 0.65 0.79 0.88 0.50
OEM Acoustical Board 1" (25mm) 0.06 0.22 0.63 0.84 0.01 0.94 0.65
OEM 250 1" (25mm) 2.5 pcf 0.07 0.28 0.71 0.90 0.93 0.93 0.70
OEM 300 1" (25mm) 3.0 pcf 0.12 0.52 1.68 0.87 0.93 0.99 0.75
ToughGard 2 Duct Liner 150 1" (25mm) 0.14 0.29 0.55 0.77 0.94 0.97 0.65
ToughGard Duct Liner 150 1" (25mm) 0.10 0.28 0.50 0.70 0.82 0.83 0.60
ToughGard Duct Liner 200 1" (25mm) 0.10 0.29 0.53 0.72 0.83 0.84 0.60
ToughGard 2 Duct Liner 200 1" (25mm) 0.10 0.29 0.53 0.72 0.83 0.84 0.60
ToughGard Duct Liner 300 1" (25mm) 0.05 0.25 0.57 0.78 0.87 0.89 0.60
ToughGard 2 Duct Liner 300 1" (25mm) 0.05 0.25 0.57 0.78 0.87 0.89 0.60
475 Ultra-Duct Gold 1" (25mm) 0.04 0.20 0.70 0.98 1.05 1.01 0.75
800 Ultra-Duct Gold 1" (25mm) 0.07 0.22 0.77 1.00 1.03 1.05 0.75
AcoustaBlanket Black 150 1" (25mm) 1.5pcf (24kg/m3) 0.10 0.32 0.66 0.84 0.91 0.91 0.70
AcoustaBoard Black 225 1" (25mm) 2.25pcf (36kg/m3) 0.06 0.30 0.58 0.85 0.91 0.94 0.65
AcoustaBoard Black 300 1" (25mm) 3pcf (48kg/m3) 0.05 0.26 0.69 0.89 0.92 0.96 0.70
OEM 250 1.5" (38mm) 2.5 pcf 0.11 0.46 0.93 0.96 0.97 0.96 0.85
OEM 300 1.5" (38mm) 3.0 pcf 0.17 0.50 1.98 1.03 0.96 0.97 0.95
ToughGard Duct Liner 150 1.5" (38mm) 0.20 0.40 0.71 0.86 0.91 0.85 0.70
ToughGard 2 Duct Liner 150 1.5" (38mm) 0.16 0.47 0.77 0.96 1.04 1.00 0.80
ToughGard (and 2) Duct Liner 200 1.5" (38mm) 0.20 0.42 0.80 0.93 0.93 0.88 0.75
ToughGard (and 2) Duct Liner 300 1.5" (38mm) 0.20 0.46 0.82 0.94 0.95 0.91 0.80
800 Ultra-Duct Gold 1.5" (38mm) 0.14 0.46 1.02 1.10 1.07 1.05 0.90
AcoustaBlanket Black 150 1.5" (38mm) 1.5pcf (24kg/m3) 0.16 0.53 0.95 1.02 1.03 1.00 0.90
AcoustaBoard Black 225 1.5" (38mm) 2.25pcf (36kg/m3) 0.12 0.48 0.83 0.90 0.90 0.89 0.80
AcoustaBoard Black 300 1.5" (38mm) 3pcf (48kg/m3) 0.10 0.51 0.89 0.95 0.92 0.93 0.80
OEM 250 2" (51mm) 2.5 pcf 0.23 0.71 1.03 0.99 0.96 0.97 0.90
OEM 300 2" (50mm) 3.0 pcf 0.17 0.76 1.05 1.02 0.95 0.96 0.95
ToughGard (and 2) Duct Liner 150 2" (51mm) 0.22 0.49 0.83 0.89 0.89 0.91 0.80
ToughGard (and 2) Duct Liner 200 2" (50mm) 0.24 0.57 0.90 0.95 0.95 0.96 0.85
ToughGard (and 2) Duct Liner 300 2" (50mm) 0.27 0.72 1.04 1.02 0.96 0.92 0.95
800 Ultra-Duct Gold 2" (51mm) 0.17 0.76 1.05 1.02 0.95 0.96 0.95
AcoustaBlanket Black 150 2" (51mm) 1.5pcf (24kg/m3) 0.24 0.79 1.09 1.05 1.02 1.01 1.00
AcoustaBoard Black 225 2" (51mm) 2.25pcf (36kg/m3) 0.20 0.72 1.08 1.04 1.01 0.98 0.95
AcoustaBoard Black 300 2" (51mm) 3pcf (48kg/m3) 0.17 0.76 1.05 1.02 0.95 0.96 0.95
OEM 600 2.5" (63mm) 6.0 pcf 0.53 0.99 1.02 0.98 1.00 0.94 1.00
OEM 250 3" (75mm) 2.5 pcf 0.44 0.91 1.07 0.99 1.02 0.99 1.00
OEM 300 3" (76mm) 3.0 pcf 0.41 0.96 1.13 1.03 1.03 1.02 1.05
OEM 600 3" (76mm) 6.0 pcf 0.64 0.93 1.00 0.98 1.00 0.98 1.00
OEM 300 4" (101mm) 3.0 pcf 0.75 1.18 1.09 1.00 1.00 1.02 1.05


Knauf

Product thickness density 125hz 250hz 500hz 1000hz 2000hz 4000hz NRC
Rigid Plenum Liner 1" (25mm) 3.0 pcf (48 kg/m3) 0.13 0.24 0.56 0.83 0.92 0.98 0.65
Rigid Plenum Liner 1.5" (38mm) 3.0 pcf (48 kg/m3) 0.19 0.41 0.89 1.02 1.03 1.04 0.85
Rigid Plenum Liner 2" (51mm) 3.0 pcf (48 kg/m3) 0.33 0.67 1.07 1.07 1.03 1.06 0.95
Black Acoustical Board 2" (25mm) 2.25 pcf (36 kg/m3) 0.26 0.62 1.05 1.07 1.04 1.05 0.95
Black Acoustical Board 1" (25mm) 3.0 pcf (48 kg/m3) 0.13 0.24 0.56 0.83 0.92 0.98 0.65
Black Acoustical Board 1.5" (38mm) 3.0 pcf (48 kg/m3) 0.19 0.41 0.89 1.02 1.03 1.04 0.85
Black Acoustical Board 2" (51mm) 3.0 pcf (48 kg/m3) 0.33 0.67 1.07 1.07 1.03 1.06 0.95
Knauf Insulation United Kingdom Rocksil Slabs
Rocksil absorbtion data


Fibrex (data from FibrexAcousticalProperties.pdf)

Product thickness density 125hz 250hz 500hz 1000hz 2000hz 4000hz NRC
SAFB 1.5" (38mm) 0.23 0.42 0.89 1.00 1.03 1.03 0.85
FBX 1280 1.5" (38mm) 0.13 0.64 1.08 1.08 1.04 1.07 0.95
FBX 1260 1.5" (38mm) 0.18 0.62 1.08 1.08 1.03 1.07 0.95
FBX 1240 1.5" (38mm) 0.13 0.48 1.02 1.08 1.02 1.01 0.90
IF 1280 1.5" (38mm) 0.13 0.64 1.08 1.08 1.04 1.07 0.95
IF 1260 1.5" (38mm) 0.18 0.62 1.08 1.08 1.03 1.07 0.95
SAFB 2" (51mm) 0.27 0.55 1.07 1.10 1.10 1.10 0.95
FBX 1280 2" (51mm) 0.32 0.90 1.11 1.07 1.01 1.05 1.00
FBX 1260 2" (51mm) 0.25 0.85 1.15 1.10 1.04 1.06 1.05
FBX 1240 2" (51mm) 0.20 0.61 1.07 1.06 1.04 1.07 0.95
IF 1280 2" (51mm) 0.32 0.90 1.11 1.07 1.01 1.05 1.00
IF 1260 2" (51mm) 0.25 0.85 1.15 1.10 1.04 1.06 1.05
SAFB 3" (76mm) 0.43 0.91 1.17 1.10 1.07 1.04 1.05
FBX 1280 3" (76mm) 0.76 0.85 1.01 0.98 1.01 1.00 0.95
FBX 1260 3" (51mm) 0.80 1.07 1.11 0.99 0.98 0.96 1.05
FBX 1240 3" (76mm) 0.49 0.91 1.21 1.09 1.06 1.04 1.05
IF 1260 3" (76mm) 0.80 1.07 1.11 0.99 0.98 0.96 1.05
SAFB 4" (102mm) 0.97 1.28 1.25 1.10 1.10 1.09 1.20
FBX 1280 4" (102mm) 1.11 0.91 1.0701 1.03 1.06 1.07 1.00
FBX 1260 4" (102mm) 0.99 1.01 1.10 0.03 1.03 1.05 1.05
FBX 1240 4" (102mm) 0.88 1.14 1.17 1.08 1.06 1.10 1.10
IF 1280 4" (102mm) 1.11 0.91 1.07 1.03 1.06 1.07 1.00
IF 1260 4" (102mm) 0.99 1.01 1.10 1.03 1.03 1.05 1.05
FBX 1240 6" (151mm) 1.32 1.14 1.11 1.09 1.06 1.07 1.10


Ottawa Fibre Inc.

Product thickness density 80hz 100hz 125hz 160hz 200hz 250hz 315hz 400hz 500hz 630hz 800hz 1000hz 1250hz 1600hz 2000hz 2500hz 3150hz 4000hz 5000hz 6300hz NRC
OFI-40 1" (25mm) 2.5 pcf (40 kg/m3) 0.03 0.03 0.05 0.08 0.13 0.25 0.36 0.52 0.66 0.81 0.91 0.98 1.00 1.04 1.04 1.04 1.04 1.07 1.07 1.07 0.75
OFI-48 1" (25mm) 3 pcf (48 kg/m3) 0.03 0.03 0.05 0.08 0.13 0.25 0.36 0.52 0.66 0.81 0.91 0.98 1.00 1.04 1.04 1.04 1.04 1.07 1.07 1.07 0.75
OFI-64 1" (25mm) 4 pcf (64 kg/m3) 0.07 0.02 0.06 0.12 0.17 0.31 0.43 0.60 0.75 0.86 0.97 1.03 1.06 1.08 1.07 1.05 1.07 1.06 1.05 1.07 0.80
OFI-72 1" (25mm) 4.5 pcf (72 kg/m3) 0.07 0.02 0.06 0.12 0.17 0.31 0.43 0.60 0.75 0.86 0.97 1.03 1.06 1.08 1.07 1.05 1.07 1.06 1.05 1.07 0.80
OFI-16 1.5" (38mm) 1.1 pcf (17.62 kg/m3) 0.14 0.18 0.25 0.32 0.39 0.51 0.63 0.76 0.85 0.91 0.96 0.97 0.98 1.00 1.00 1.02 1.02 1.03 1.08 0.85
OFI-32 2" (51mm) 2 pcf (32 kg/m3) 0.11 0.11 0.23 0.38 0.50 0.71 0.86 0.97 1.05 1.09 1.11 1.11 1.11 1.09 1.06 1.04 1.05 1.07 1.09 1.10 1.00
OFI-40 2" (51mm) 2.5 pcf (40 kg/m3) 0.09 0.11 0.21 0.44 0.59 0.79 1.04 1.17 1.21 1.22 1.19 1.14 1.13 1.11 1.09 1.07 1.07 1.07 1.08 1.10 1.05
OFI-48 2" (51mm) 3 pcf (48 kg/m3) 0.13 0.19 0.21 0.33 0.50 0.76 0.94 1.10 1.16 1.17 1.17 1.15 1.12 1.11 1.09 1.06 1.09 1.08 1.11 1.06 1.05
OFI-64 2" (51mm) 4 pcf (64 kg/m3) 0.07 0.16 0.22 0.37 0.54 0.85 1.01 1.17 1.19 1.19 1.19 1.16 1.12 1.11 1.11 1.06 1.08 1.09 1.09 1.10 1.10
OFI-72 2" (51mm) 4.5 pcf (72 kg/m3) 0.02 0.24 0.32 0.50 0.71 0.95 1.08 1.14 1.19 1.18 1.15 1.11 1.07 1.05 1.04 1.01 1.02 1.02 1.00 1.01 1.05
OFI-28 2.5" (64mm) 1.8 pcf (28.83 kg/m3) 0.21 0.27 0.41 0.52 0.69 0.89 1.07 1.17 1.22 1.24 1.26 1.24 1.21 1.19 1.16 1.15 1.17 1.18 1.22 1.15
OFI-48 3" (76mm) 3 pcf (48 kg/m3) 0.23 0.29 0.42 0.78 1.02 1.21 1.29 1.30 1.27 1.20 1.15 1.14 1.10 1.10 1.09 1.06 1.07 1.07 1.08 1.09 1.20
OFI-16 3.5" (89mm) 1.1 pcf (17.62 kg/m3) 0.29 0.36 0.55 0.77 0.98 1.15 1.25 1.31 1.29 1.26 1.23 1.18 1.17 1.15 1.14 1.16 1.17 1.18 1.22 1.20
OFI-48 4" (102mm) 3 pcf (48 kg/m3) 0.55 0.69 0.92 1.17 1.24 1.24 1.23 1.22 1.19 1.16 1.13 1.10 1.11 1.11 1.09 1.06 1.06 1.06 1.06 1.08 1.15
OFI-16 6" (152mm) 1.1 pcf (17.62 kg/m3) 0.48 0.84 1.09 1.30 1.45 1.45 1.44 1.34 1.26 1.18 1.16 1.13 1.12 1.12 1.11 1.09 1.09 1.10 1.11 1.25
Product thickness density 125hz 250hz 500hz 1000hz 2000hz 4000hz NRC
OFI-40 FSK 1" (25mm) 0.20 0.61 0.72 0.98 0.68 0.30 0.75
OFI-48 FSK 1" (25mm) 0.15 0.71 0.70 0.89 0.65 0.39 0.75
BMC 1" (25mm) 0.05 0.28 0.72 0.95 1.02 1.01 0.75
OFI-40 FSK 1.5" (38mm) 0.60 0.74 1.17 0.96 0.57 0.33 0.85
BMC 1.5" (38mm) 0.11 0.50 1.04 1.09 1.07 1.06 0.95
OFI-48 FSK 2" (51mm) 0.51 1.10 1.13 0.82 0.53 0.33 0.90
BMC 2" (51mm) 0.17 0.78 1.17 1.12 1.09 1.08 1.05
BMC 3" (76mm) 0.56 1.23 1.29 1.15 1.09 1.08 1.20
BMC 4" (101mm) 0.87 1.32 1.24 1.14 1.10 1.09 1.20


IsoWool - British Gypsum-Isover

Product thickness 100hz 125hz 160hz 200hz 250hz 315hz 400hz 500hz 630hz 800hz 1000hz 1250hz 1600hz 2000hz 2500hz 3150hz 4000hz 5000hz
Multi Slab 50mm 0.18 0.17 0.31 0.48 0.45 0.55 0.76 0.80 0.88 0.86 0.89 0.92 0.96 0.97 0.95 0.99 0.94 0.91
HighPerf Slab 50mm 0.20 0.27 0.39 0.46 0.54 0.68 0.95 0.94 0.89 1.04 1.07 1.02 1.01 0.96 1.01 1.03 0.99 0.99


Autex Polyester Acoustic Blanket New Zealand

Product
Sound Absorption Coefficients
Frequency (Hz)
Density
(kg/m3)
Thickness
(mm)
125
250
500
1000
2000
4000
NRC
AAB 14-25
0.15
0.25
0.35
0.45
0.45
0.50
0.40
14kg/m3
25
AAB 14-50
0.35
0.50
0.65
0.70
0.70
0.70
0.65
14kg/m3
50
AAB 20-25
0.20
0.35
0.45
0.55
0.60
0.65
0.50
20kg/m3
25
AAB 120-50
0.25
0.50
0.70
0.80
0.80
0.80
0.80
20kg/m3
50
AAB 20-75
0.35
0.60
0.85
0.95
0.90
0.95
0.85
20kg/m3
75
AAB 20-100*
0.50
0.85
1.00
0.95
0.95
1.00
0.95
20kg/m3
100
AAB 25-25
0.15
0.30
0.50
0.65
0.75
0.75
0.55
25kg/m3
25
AAB 25-50
0.25
0.50
0.70
0.80
0.80
0.80
0.70
25kg/m3
50
AAB 25-75*
0.40
0.65
0.90
1.00
0.95
1.00
0.90
25kg/m3
75
AAB 25-100
0.50
1.00
1.10
1.05
1.05
1.05
1.00
25kg/m3
100
AAB 32-25
0.15
0.25
0.50
0.65
0.80
0.80
0.55
32kg/m3
25
AAB 32-50*
0.30
0.50
0.80
0.95
0.90
0.90
0.80
32kg/m3
50
AAB 32-75
0.20
0.55
0.90
1.00
1.00
1.00
0.90
32kg/m3
75
AAB 32-100
0.50
1.00
1.10
1.05
1.05
1.05
1.05
32kg/m3
100
AAB 35-25*
0.08
0.34
0.64
0.81
0.91
0.90
0.70
35kg/m3
25
AAB 35-50*
0.45
0.85
1.00
0.95
0.95
1.00
0.90
35kg/m3
50
AAB 40-25
0.10
0.20
0.45
0.65
0.80
0.80
0.55
40kg/m3
25
AAB 40-50
0.30
0.55
0.90
0.95
0.95
0.95
0.85
40kg/m3
50
AAB 40-75
0.25
0.60
0.95
1.05
1.05
1.00
0.95
40kg/m3
75
AAB 40-100
0.45
1.05
1.15
1.05
1.05
1.05
1.05
40kg/m3
100
AAB 48-25
0.15
0.35
0.60
0.75
0.85
0.95
0.65
48kg/m3
25
AAB 48-50
0.30
0.55
0.90
0.95
0.95
0.95
0.90
48kg/m3
50
AAB 48-75
0.40
0.80
1.15
1.10
1.05
1.05
1.05
48kg/m3
75
AAB 48-100
0.50
1.10
1.15
1.10
1.10
1.05
1.10
48kg/m3
100


Delta Insulation

Product thickness density 125hz 250hz 500hz 1000hz 2000hz 4000hz NRC
Sound Attenuation Board


CSR Bradford - Rockwool (Australia)

Product thickness density 125hz 250hz 500hz 1000hz 2000hz 4000hz 5000hz NRC Flow Resistivity
Acousticon 75mm kg/m3 0.14 1.02 0.82 0.42 0.38 0.29 0.38 0.65
Glasswool Anticon Roofing Blanket - R1.5 Thermofoil 55mm kg/m3 0.34 0.86 1.04 0.41 0.20 0.07 0.04 0.65
Glasswool Anticon Roofing Blanket - R2.0 Thermofoil 75mm kg/m3 0.60 1.21 0.90 0.41 0.28 0.10 0.12 0.70
Glasswool Anticon Roofing Blanket - R2.5 Thermofoil 95mm kg/m3 0.72 1.43 0.82 0.43 0.26 0.14 0.08 0.75
Glasswool Building Blanket - R1.2 50mm kg/m3 0.25 0.65 0.80 0.90 0.90 1.00 1.05 0.80
Glasswool Building Blanket - R1.8 75mm kg/m3 0.35 0.80 0.85 0.90 0.90 1.10 1.05 0.85
Glasswool Ceiling Batts 105mm kg/m3 0.60 0.98 1.03 1.05 1.14 1.10 1.09 1.05 0.5 x 10^4 mks Rayls/m
Glasswool Ductel - Perforated Foil 25mm kg/m3 0.06 0.38 0.93 1.10 1.10 1.00 0.87 0.88
Glasswool Ductel - BMF 25mm kg/m3 0.14 0.31 0.82 1.08 1.13 1.10 1.07 0.83
Glasswool Ductel - Perforated Foil 50mm kg/m3 0.35 0.91 1.15 1.12 1.08 0.93 0.85 1.06
Glasswool Flexitel - Nil/Plain 25mm kg/m3 0.13 0.31 0.55 0.76 0.88 0.95 0.98 0.62
Glasswool Flexitel - Perforated Foil 25mm kg/m3 0.13 0.33 0.75 0.99 1.12 0.94 0.89 0.80
Glasswool Flexitel - Nil/Plain 50mm kg/m3 0.42 0.64 0.92 1.07 0.98 1.02 1.03 0.90
Glasswool Flexitel - Perforated Foil 50mm kg/m3 0.39 0.84 1.08 1.20 1.06 1.01 0.95 1.05
Glasswool Quietel 13mm kg/m3 0.06 0.08 0.28 0.62 0.86 1.06 1.04 0.45
Glasswool Quietel 25mm kg/m3 0.07 0.28 0.74 1.04 1.13 1.09 1.11 0.80
Glasswool Quietel 50mm kg/m3 0.36 0.81 1.12 1.18 1.11 1.12 1.22 1.05
Glasswool Supertel 25mm kg/m3 0.12 0.41 0.63 0.90 1.01 0.99 0.94 0.74
Glasswool Supertel 50mm kg/m3 0.27 0.75 1.12 1.12 1.07 1.04 1.03 1.01
Glasswool Supertel - Perforated Foil 50mm kg/m3 0.39 0.72 1.14 1.19 1.05 0.98 0.90 1.02
Glasswool Supertel 75mm kg/m3 0.52 0.94 1.24 1.13 1.06 1.09 1.02 1.09
Glasswool Ultratel 25mm kg/m3 0.03 0.24 0.65 0.98 1.07 1.03 1.01 0.73
Glasswool Ultratel - Perforated 25mm kg/m3 0.12 0.31 0.81 1.09 1.09 0.91 0.89 0.77
Glasswool Ultratel 50mm kg/m3 0.34 0.65 1.23 1.11 1.08 1.02 0.98 1.02
Glasswool Ultratel - Perforated Foil 75mm kg/m3 0.69 1.19 1.15 1.09 1.03 0.92 0.90 1.11
Glasswool Wall Floor Batts R2.0 95mm kg/m3 0.57 0.78 0.97 0.91 0.96 1.00 0.95 0.90 0.5 x 10^4 mks Rayls/m
Acousticlad Fibertex R60 0.29 0.70 1.19 1.04 1.14 1.06 1.07 0.93
Acousticlad Fibertex R60 CF/BMF 0.69 1.08 1.20 1.14 1.15 1.13 1.08 0.98
Acousticlad Fibertex R80 0.36 0.91 1.19 1.20 1.07 1.05 1.19 0.98
Acousticlad Fibertex R80 CF/BMF 0.58 1.10 1.20 1.17 0.97 0.96 0.87 0.98
Fibertex 350 Rockwool 25mm 0.18 0.29 0.69 0.86 1.05 1.20 1.16 0.71 2.2 x 10^4 Rays/m
Fibertex 350 Rockwool 25mm 0.14 0.38 0.87 1.07 1.06 0.90 0.79 0.85 2.2 x 10^4 Rays/m
Fibertex 350 Rockwool 50mm 0.21 0.69 1.13 1.15 1.16 1.18 1.14 1.05 2.2 x 10^4 Rays/m
Fibertex 350 Rockwool 50mm 0.31 0.83 1.16 0.99 0.90 0.78 0.73 0.97 2.2 x 10^4 Rays/m
Fibertex 450 Rockwool 25mm 0.08 0.80 0.68 0.93 1.05 1.10 0.98 0.75 3.3 x 10^4 Rays/m
Fibertex 450 Rockwool 50mm 0.36 0.91 1.19 1.20 1.07 1.05 1.19 1.09 3.3 x 10^4 Rays/m
Fibertex 450 Rockwool - Thermofoil HD 25mm 0.06 0.20 0.62 0.80 0.89 0.81 0.76 0.60 3.3 x 10^4 Rays/m
Fibertex 450 Rockwool - Perforated 50mm 0.27 0.78 1.23 1.17 1.13 1.00 0.94 1.10 3.3 x 10^4 Rays/m
Fibertex 650 Rockwool 25mm 0.21 0.29 0.52 1.14 1.02 0.97 1.06 0.74 5.0 x 10^4 Rays/m
Fibertex 650 Rockwool 50mm 0.59 0.97 1.18 1.00 1.04 1.02 1.03 1.05 5.0 x 10^4 Rays/m
Fibertex Acoustic Baffle-602 50mm 0.17 0.41 0.87 1.22 1.12 0.95 0.90 0.91
Fibertex Hd Rockwool 25mm 120kg/m^3 0.02 0.30 0.82 1.10 1.06 1.02 1.20 0.77 7.0 * 10^4 mks Rayls/m
Fibertex Hd Rockwool 50mm 120kg/m^3 0.50 0.74 1.20 1.20 0.98 1.14 1.19 0.95 7.0 * 10^4 mks Rayls/m
Fibertex Rockwool Building Blanket Plain 50mm 0.24 0.73 0.93 1.10 1.12 1.12 1.14 0.95 0.5 x 10^4 mks Rayls/m
Fibertex Rockwool Building Blanket BMF 50mm 0.30 0.75 0.90 0.95 0.95 1.00 1.00 0.90 0.5 x 10^4 mks Rayls/m
Fibertex Rockwool Ductliner Plain 25mm 60kg/m^3 0.18 0.29 0.69 0.86 1.05 1.20 1.16 0.71 2.2 x 10^4 mks Rayls/m
Fibertex Rockwool Ductliner Plain 50mm 60kg/m^3 0.29 0.70 1.19 1.04 1.14 1.06 1.07 0.93 2.2 x 10^4 mks Rayls/m
Fibertex Rockwool Ductliner BMF 25mm 60kg/m^3 0.15 0.33 0.74 0.94 1.03 1.04 0.98 0.76 2.2 x 10^4 mks Rayls/m
Fibertex Rockwool Ductliner BMF 50mm 60kg/m^3 0.36 0.76 1.19 1.09 1.03 1.04 0.98 1.01 2.2 x 10^4 mks Rayls/m
Fibertex Rockwool Ductliner HD Perf Foil 25mm 60kg/m^3 0.14 0.38 0.87 1.07 1.06 0.90 0.79 0.85 2.2 x 10^4 mks Rayls/m
Fibertex Rockwool Ductliner HD Perf Foil 50mm 60kg/m^3 0.31 0.83 1.16 0.99 0.90 0.78 0.73 0.97 2.2 x 10^4 mks Rayls/m
Product 100hz 125hz 160hz 200hz 250hz 375hz 400hz 500hz 630hz 800hz 1000hz 1250hz 1600hz 2000hz 2500hz 3150hz 4000hz 5000hz NRC
Acousticlad ATF771 0.20 0.30 0.45 0.70 0.85 0.91 1.05 1.05 1.05 1.05 1.00 0.91 1.00 1.00 0.95 1.00 1.00 0.90 1.00
Acousticlad ATF772 0.25 0.25 0.45 0.70 0.80 0.90 1.05 1.05 1.00 1.10 1.00 1.00 0.95 1.00 1.00 1.00 0.95 0.95 0.95
Acousticlad ATF773 0.20 0.30 0.45 0.70 0.80 1.00 1.00 1.10 1.05 1.00 1.00 1.00 1.00 1.00 1.00 1.05 1.00 0.95 1.00
Acousticlad ATF774 0.40 0.35 0.65 0.85 0.90 1.00 1.00 1.00 1.05 0.95 0.90 0.85 0.80 0.80 0.75 0.70 0.65 0.60 0.90
Acousticlad ATF775 0.35 0.35 0.55 0.90 1.10 1.10 1.15 1.10 1.10 1.00 1.00 1.00 0.95 1.00 1.05 0.95 0.95 0.90 1.05


Insulco Tasman Insulation (Australia)

Product thickness density 125hz 250hz 500hz 1000hz 2000hz 4000hz NRC
High Density Nil 25mm 48 kg/m3 0.07 0.24 0.64 0.92 0.97 1.01 0.70
High Density Black 25mm 48 kg/m3 0.07 0.26 0.69 0.96 1.02 1.02 0.75
High Density Perf. 25mm 48 kg/m3 0.09 0.25 0.74 1.04 1.02 0.93 0.75
High Density Nil 50mm 48 kg/m3 0.38 0.73 1.20 1.17 1.15 1.11 1.05
High Density Perf 50mm 48 kg/m3 0.35 0.76 1.18 1.13 1.03 0.90 1.00
High Density Nil 75mm 48 kg/m3 0.55 1.15 1.23 1.09 1.12 1.12 1.15
Semi Rigid Nil 25mm 32 kg/m3 0.07 0.24 0.61 0.88 0.93 0.95 0.65
Semi Rigid Black 25mm 32 kg/m3 0.07 0.25 0.63 0.89 1.00 0.99 0.70
Semi Rigid Perf. 25mm 32 kg/m3 0.08 0.22 0.63 0.93 1.01 0.87 0.70
Semi Rigid Nil 50mm 32 kg/m3 0.41 0.84 1.02 1.25 1.22 1.16 1.10
Semi Rigid Black 50mm 32 kg/m3 0.46 0.91 1.06 1.12 1.12 1.11 1.05
Semi Rigid PerfF 50mm 32 kg/m3 0.36 0.87 1.12 1.19 1.07 1.00 1.05
Semi Rigid PerfM 50mm 32 kg/m3 0.19 0.64 1.12 1.09 1.01 0.92 0.95
Semi Rigid Nil 75mm 32 kg/m3 0.41 0.94 1.14 1.08 1.12 1.06 1.05
Semi Rigid Perf 75mm 32 kg/m3 0.52 1.07 1.23 1.11 1.15 1.00 1.15
Semi Rigid Perf 100mm 32 kg/m3 0.62 1.19 1.21 1.07 1.05 1.05 1.15


Manson Akousti-Liner R

Product thickness mounting 125hz 250hz 500hz 1000hz 2000hz 4000hz NRC
Akousti-Liner 5/8" (18mm) A 0.03 0.14 0.40 0.70 0.85 0.96 0.50
Akousti-Liner 1" (25mm) A 0.07 0.30 0.72 0.96 1.04 1.05 0.75
Akousti-Liner 1.5" (38mm) A 0.14 0.46 0.98 1.08 1.08 1.07 0.90
Akousti-Liner 2" (51mm) A 0.23 0.80 1.16 1.13 1.09 1.09 1.05
Akousti-Liner 5/8" (18mm) F25 0.18 0.39 0.47 0.72 0.89 0.79 0.60
Akousti-Liner 1" (25mm) F25 0.30 0.51 0.77 0.94 1.03 0.82 0.80
Akousti-Liner 1.5" (38mm) F25 0.38 0.61 1.00 1.10 1.09 0.85 0.95
Akousti-Liner 2" (51mm) F25 0.48 0.83 1.16 1.16 1.11 0.87 1.05


Acousti Cotton

Product thickness density 125hz 250hz 500hz 1000hz 2000hz 4000hz NRC
3# 0.5" (15mm) 0.01 0.06 0.22 0.54 0.81 1.00 0.40
3# 1" (15mm) 0.04 0.25 0.75 0.98 1.03 1.08 0.75
4.5# 1" (15mm) 0.04 0.33 0.86 1.01 1.04 1.02 0.80
6# 1" (15mm) 0.06 0.38 0.88 0.99 1.00 1.04 0.80
4.5# 2" (15mm) 0.24 1.04 1.00 0.96 0.97 1.02 1.00


Acoustical Surfaces Echo Eliminator Acoustical Tests (Cotton)

Product thickness density mounting 125hz 250hz 500hz 1000hz 2000hz 4000hz NRC
Echo Eliminator (Cotton) 1" 3pcf A 0.08 0.31 0.79 1.01 1.00 0.99 0.80
Echo Eliminator (Cotton) 2" 3pcf A 0.35 0.94 1.32 1.22 1.06 1.03 1.15
Echo Eliminator (Cotton) 1" 6pcf A 0.07 0.30 0.86 1.10 1.05 1.03 0.85
Bass Buster (Cotton) 4" 1.2pcf 0.97 1.37 1.23 1.05 1.00 1.01 1.15


Icynene Spray Open Cell Foam Insulation

Product thickness density 125hz 250hz 500hz 1000hz 2000hz 4000hz NRC
Icynene 4" (100mm) 0.5lb 0.11 0.43 0.89 0.72 0.71 0.67 0.70


Armstrong Ceiling Tile

Several Armstrong ceiling coefficients
Product 125hz 250hz 500hz 1000hz 2000hz 4000hz NRC
Fine Fissured High NRC 0.36 0.41 0.65 0.84 0.90 0.88 0.70
Cirrus Beveled Tile 0.38 0.38 0.51 0.77 0.89 0.95 0.85


RPG

Product thickness density 80hz 100hz 125hz 160hz 200hz 250hz 315hz 400hz 500hz 630hz 800hz 1000hz 1250hz 1600hz 2000hz 2500z 3150hz 4000hz 5000hz
BASWA®phon 1.57" (40mm) 0.20 0.33 0.39 0.43 0.54 0.68 0.84 0.82 0.85 0.83 0.79 0.73 0.72 0.74 0.68 0.64 0.52 0.45
BASWA®phon 2.68" (68mm) 0.28 0.57 0.55 0.60 0.82 0.79 0.81 0.77 0.71 0.65 0.65 0.66 0.66 0.63 0.58 0.54 0.49 0.43
Modex Corner 1.12 0.64 0.54 0.56 0.43 0.36 0.45 0.31 0.21 0.20 0.24 0.26 0.26 0.28 0.32 0.37 0.41 0.46

Tasman Insulation New Zealand

Product thickness density 125hz 250hz 500hz 1000hz 2000hz 4000hz NRC
Noise Control Block 100mm) 0.50 0.85 1.10 1.10 1.10 1.10 1.04
Noise Control Blanket 50mm) 0.43 0.97 1.05 1.02 1.01 1.03 1.00
Noise Control Blanket 75mm) 0.45 0.84 1.17 1.06 1.06 1.03 1.05
Noise Control Panel 50mm) 0.38 0.73 0.99 0.99 0.99 0.99 0.93
Board (fiberboard) 50mm) 0.18 0.10 0.26 0.59 0.72 0.81 0.42





Auralex Sound Absorbtion Products
Auralex absorbtion coefficients
Auralex absorbtion coefficients All Products Master Table 100hz to 6k-hz
Primacoustic Studio Acoustics 2" and 3" foam absorbtion coefficients

Modular Acoustics hinged absorber panels

Auralex absorption coefficients

Couches, effect on low frequency response
Egg Cartons, Riverbank Acoustical Laboratories tests

Eric Desart thread about Owens Corning 701, 703, 705, with 1/4 wavelength absorbtion expectation graph

BBC A Modular Wideband Sound Absorber 1991-11.pdf
Eric Desart's Playing With Baffles
Comparison of, and sabins of: DIY SuperChunk, DIY Corner Panels vs MegaLENRD, MiniTraps


Jon Risch's Absorbers
Jon Risch's Absorber Review #1
Jon Risch's Absorber Review #2
Bill's Audio Cave
Todd E. Jones's Ceiling Diffusor, Ceiling and Wall Traps, and Corner Traps (scroll down)
Chris Campbell's Acoustic Baffle / Absorbent Panel
cylindrical bass absorber


Absorber panels example (Finnish)
DIY Rigid Foam Skyline (Finnish)
Keith Kidder's Absorbers
Theater L'Idiot
Johns-Manville Linacoustic being applied in Kirk's Theater Uptown Paridiso
Andrew McMaster's Guide To Building Ceiling Clouds
Digipenguin's fiberglass traps using hand compressed R25 batts in a frame with wire mesh
Doug Plos DIY Tube Trap Project
Jon Gale and Chris's DIY Tube Traps
Zaphod first DIY Absorber panel: cheap, easy, light
jasplat88's 12"x12"x36" square absorber with corner molding for supports
Sechelt davey_fl's 1x3 pine around GoM covered Roxul absorbers
Long Sought for Sound AcousticTreatments DIY Absorbers and Helmholtz corner
BBC 1992-11 A Modular Wideband Sound Absorber 7" of RW2, abs coef 50hz to 8khz
Rutgar's Construction of Absorption Panels on French Doors
GPowers Fabric Frames website
Fabri Lok panels - some great mounting ideas


Dave Portocarrero Absorbers
Harder Corner Trap
Mark Edmonds walls
Martin's Absorbers
Bob's Ultra Magnificent 12" thick absorbers
Vshine's Wall Absorbers



Acoustics First Sound Channels-2 acoustical fabric absorbers
GetRidOfNoise absorber - nice 45 degree back present wraping technique with GoM



Foam:
 Open Cell
   - PolyEther
   - Polyester
   - Polyurethane ether
   - Polyurethane ester
   - melamine
   - Reticulated polyurethane (stranded - air filter little resistance)
  Closed Cell
   - PVC
   - Neoprene
   - Polyethylene
   - Silicones

For a list of closed cell boards and their descriptions, please see Brian Dayton's post at StudioTips re polystyrene, styrene , polyethylene , polypropylene , including their chemical formula






Cutting

drywall T-square to get a straight square edge and a utility knife
electric carving knife
table saw or a skillsaw will cut the stuff and give you nice clean edges. You can even clamp a straight-edge to the 6 lb. (705)
Depending on the throat depth BAND SAWS work GREAT! They are what a local company uses for all there fiberglass cutting chores
Cutting techniques quoted from here.
Mike says "I have tried a 12" hacksaw, bread knife, stanley knife with saw blade, tenon saw, jigsaw and regular stanley knife and none of them are as effective as the jet saw." quote from here


Cover Material

Burlap and polyester batting
polyester double-knit, often used for speaker grilles. (Harmon Whitepapers Loudspeakers&RoomsPt3.pdf)
Guilford of Maine: Acoustically Transparent Fire Resistant Fabric
One 2" layer of 703, and a cover 2" layer of SelectSound Black (i.e. buy it covered!)


Tube Traps

Tube traps (1/4 wave silencers) have the advantage that they are narrow band devices, and are easy to make and predict.
Eric writes "I think a better approach is the corner absorption to start with as found in the FAQ. Use those 1/4 wave silencers if needed to solve specific problems."
Giant Toilet Paper Tubes
Studiotips review of the Giant Toilet Paper Tubes
Eric talking about tube traps
Bert's suggestions for Tube Length vs Diameter correction formula
ASC Tube Traps.
http://www.teresaudio.com/haven/home.html
http://www.teresaudio.com/haven/traps/traps.html
http://dougploss.com/tubetrap_diy.htm
http://www.geocities.com/jonrisch/basstrap.htm
http://www.audioasylum.com/audio/tweaks/messages/77809.html
http://www.geocities.com/jonrisch/a1.htm

Helmholtz absorber examples.

I believe that your absorbtion may vary due to different construction materials, techniques, construction errors, and who knows what else.

Absorber coefficients: 0.90, 0.54, 0.16, 0.12, 0.10
This is made by making a panel about 2" thick with the visible side being 3/16" masoniate perforated so that about 0.1 percent of its area is holes. e.g. holes of about 3/16" diameter spaced 6 inches apart on both vertical and horizontal centers. Fill the 2" behind it with 2" of 703. Do not have an air gap.

Here's another variation: 1.00, 0.68, 0.39, 0.17, 0.13, 0.10
In this case the thing is 8" deep. The holes in the masonite are spaced 2 and 9/16" inches on centers (i.e. more holes). And there is 4" of 703 at the back -- so there's a 4" air space between the 703 and the masonite.

And another: 0.98, 0.88, 0.52, 0.21, 0.16, 0.14
In this case the thing is 6" deep. The holes in the masonite are spaced 1 and 9/16" inches on centers. And there is 2" of 703 at the front -- so there's a 4" air space between the 703 and the wall.

And another: 1.00, 0.83, 0.44, 0.29, 0.24, 0.20
In this case the thing is 8" deep. The holes in the masonite are spaced 3 inches on centers. And there is 4" of 703 at the front -- so there's a 4" air space between the 703 and the wall.

membrane absorber with a 1/8" thick panel over a frame made of 2x3s. If the panel weighs .375 pounds per square foot and the depth is 2.5", you should end up with a center frequency of 175 Hz. Not putting insulation inside will make it more narrowband than if you did use insulation. (jazzman_in_pa)

Membrane at CustomAudioDesigns

A slat absorber could be made: 0.98, 0.72, 0.33, 0.21, 0.16, 0.14
Again this is 8" deep, but this time there is 2" of 703 against the front instead of against the wall, leaving a 6" air gap between the 703 and the wall. Instead of masonite with holes, you put upt 3/4" thick x 3" wide boards, with alternating 1/8" and 1/4" slits (spacing) between them to let the air through.

Here's a polycylindrical (8" deep in the center, 8' wide) absorber coefficient: 0.50, 0.35, 0.22, 0.14, 0.11, 0.10
The poly is made with 1/4" plywood bent over a 1" wood shaping frame with 2" of 703 at the back (air space between the 703 and the plywood).

(source: How to Build A Small Budget Recording Studio From Scratch : With 12 Tested Designs by Michael Shea
If you want to know more about how to build these (diagrams and additional text) or to know how to combine and choose these with other things in your room, then I'd suggest that you buy a copy!)
Note: In this thread Eric Desart says, "Be damned careful with traps going that low in frequency [e.g. 20hz, 30hz]. Not only the resonance frequency is important but also the damping. Such devices very easily can cause secondary reverb curves, radiating sound back into the room at a minus 20 to minus 30 dB level. ... The resonance frequency itself is only ONE SINGLE parameter. I once tried to correct a 31 Hz problem with a panel resonator (horizontal). I could tune the panel resonator to the EXACT frequency. But I couldn't get the internal damping high enough. And when I got it high enough it lost its efficiency. So even with the correct resonance frequency I just got other problems instead. So I stopped and demounted the whole thing (which had cost already time, energy and money)."








Assistance provided by but not mentioned above (alphabetical order)

  • Andre Vare (avare)
  • Dan Nelson
  • Eric Desart
  • Paul Woodlock
  • Ben Seigel - css (font/colour/case) recommendations