Fiberglass, Rockwool,, Polyester, Cotton, and Sheep Insulation Type Absorption Coefficients by Bob Golds
This document is a copy of this hard to find but extremely useful collection of frequency absorption coefficients at different frequencies for recording studio construction or other engineering purposes which is available here https://www.bobgolds.com/AbsorptionCoefficients.htm and giving full credit to Bob Gold and his team. Bob if you see this an want us to remove it, let us know.
Call a local insulation company, and see what’s available in your area. Even Home Depot or Lowe’s usually has some type of rockwool or heavy fiberglass. Cut it to size and cover with fabric for acoustic panels, or stuff walls with it for soundproofing.
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.”
“The absorption coefficients that are typically published for acoustical materials are found using the reverberation chamber method. This method yields random incidence absorption coefficients, which are not percentages. Normal incidence absorption coefficients are percentages. The two are often confused in the literature. A material that has a random incidence absorption coefficient of 1.22 is simply a better absorber relative to a material with a random incidence absorption coefficient of 0.67 for the same frequency band, all other factors being equal. The numbers should not, however, be treated as an indicator of the percentage of sound absorbed by the material.” by Savant aka Jeff D. Szymanski
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 |
|
|
|
|
|
|
|
| 1240 |
1.5″ (38mm) |
A |
4.0 pcf (64 kg/m3) |
0.13 |
0.48 |
1.02 |
1.08 |
1.02 |
1.01 |
0.90 |
| 1260 |
1.5″ (38mm) |
A |
6.0 pcf (96 kg/m3) |
0.18 |
0.62 |
1.08 |
1.08 |
1.03 |
1.07 |
0.95 |
| 1280 |
1.5″ (38mm) |
A |
8.0 pcf (96 kg/m3) |
0.13 |
0.64 |
1.08 |
1.08 |
1.04 |
1.07 |
0.95 |
| 1240 |
2″ (51mm) |
A |
4.0 pcf (64 kg/m3) |
0.20 |
0.61 |
1.07 |
1.06 |
1.04 |
1.07 |
0.95 |
| 1260 |
2″ (51mm) |
A |
6.0 pcf (96 kg/m3) |
0.25 |
0.85 |
1.15 |
1.10 |
1.04 |
1.06 |
1.05 |
| 1280 |
2″ (51mm) |
A |
8.0 pcf (96 kg/m3) |
0.32 |
0.90 |
1.11 |
1.07 |
1.01 |
1.05 |
1.00 |
| 1260 |
3″ (76mm) |
A |
6.0 pcf (96 kg/m3) |
0.80 |
1.07 |
1.11 |
0.99 |
0.98 |
0.96 |
1.05 |
| 1240 |
4″ (102mm) |
A |
4.0 pcf (64 kg/m3) |
0.88 |
1.14 |
1.17 |
1.08 |
1.06 |
1.10 |
1.10 |
| 1260 |
4″ (102mm) |
A |
6.0 pcf (96 kg/m3) |
0.99 |
1.01 |
1.10 |
1.03 |
1.03 |
1.05 |
1.05 |
| 1280 |
4″ (102mm) |
A |
8.0 pcf (96 kg/m3) |
1.11 |
0.91 |
1.07 |
1.03 |
1.06 |
1.07 |
1.00 |
| 1240 |
6″ (152mm) |
A |
4.0 pcf (64 kg/m3) |
1.31 |
1.14 |
1.11 |
1.09 |
1.06 |
1.07 |
1.10 |
Owens Corning
I’m unable to find Absorption Coefficient information on SOFTR Aeroflex Plus Acoustical Duct Liner (rolls, black on one side).
Sound Attenuation Batts3.5″ (89mm)
A on wall0.481.001.121.030.970.961.05Sound Attenuation Batts2.5″ (63mm)
E-405 16″0.590.840.790.940.961.120.90Sound Attenuation Batts3.5″ (89mm)
E-405 16″0.730.980.981.051.081.151.00Black Acoustic Board1″ (25mm)
A0.060.250.620.910.990.980.70
| 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 |
| 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 |
|
BBC 1992-10.pdf. Several good LF absorbers Helmholtz, Membrane studied here
| Product |
thickness |
40hz |
50hz |
63hz |
80hz |
100hz |
125hz |
250hz |
500hz |
1000hz |
2000hz |
4000hz |
8000hz |
|---|
| RW2 fig3 |
10.6″ (270mm) |
|
1.05 |
1.45 |
1.18 |
1.05 |
1.07 |
1.05 |
1.10 |
1.00 |
0.95 |
0.95 |
0.90 |
| RW2 fig3 |
7″ (180mm) |
|
0.40 |
0.65 |
0.85 |
1.25 |
0.95 |
1.10 |
1.00 |
0.95 |
0.95 |
1.00 |
0.90 |
| A10 fig21,22 |
7.2″ (184mm) |
|
0.70 |
1.00 |
0.75 |
0.63 |
0.45 |
0.50 |
0.50 |
0.30 |
0.25 |
0.20 |
0.20 |
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 |
IIG Intelligent Insulation (Calsite/Johns Manville Joint Venture)
| Product |
thickness |
density |
125hz |
250hz |
500hz |
1000hz |
2000hz |
4000hz |
NRC |
|---|
| MinWool-1200 Industrial Board 1240 |
1.5″ (38mm) |
4 pcf (64 kg/m^3) |
0.13 |
0.48 |
1.02 |
1.08 |
1.02 |
1.01 |
0.90 |
| MinWool-1200 Industrial Board 1240 |
2″ (51mm) |
4 pcf (64 kg/m^3) |
0.20 |
0.61 |
1.07 |
1.06 |
1.04 |
1.07 |
0.95 |
| MinWool-1200 Industrial Board 1240 |
4″ (102mm) |
4 pcf (64 kg/m^3) |
0.88 |
1.14 |
1.17 |
1.08 |
1.06 |
1.10 |
1.10 |
| MinWool-1200 Industrial Board 1240 |
6″ (152mm) |
4 pcf (64 kg/m^3) |
0.32 |
1.14 |
1.11 |
1.09 |
1.06 |
1.07 |
1.10 |
| MinWool-1200 Industrial Board 1260 |
1.5″ (38mm) |
6 pcf (96 kg/m^3) |
0.18 |
0.62 |
1.08 |
1.08 |
1.03 |
1.07 |
0.95 |
| MinWool-1200 Industrial Board 1260 |
2″ (51mm) |
6 pcf (96 kg/m^3) |
0.25 |
0.85 |
1.15 |
1.10 |
1.04 |
1.06 |
1.05 |
| MinWool-1200 Industrial Board 1260 |
3″ (76mm) |
6 pcf (96 kg/m^3) |
0.80 |
1.07 |
1.11 |
0.99 |
0.98 |
0.96 |
1.05 |
| MinWool-1200 Industrial Board 1260 |
4″ (102mm) |
6 pcf (96 kg/m^3) |
0.99 |
1.01 |
1.10 |
1.03 |
1.03 |
1.05 |
1.05 |
| MinWool-1200 Industrial Board 1280 |
1.5″ (38mm) |
8 pcf (128 kg/m^3) |
0.13 |
0.64 |
1.08 |
1.08 |
1.04 |
1.07 |
0.95 |
| MinWool-1200 Industrial Board 1280 |
2″ (51mm) |
8 pcf (128 kg/m^3) |
0.32 |
0.90 |
1.11 |
1.07 |
1.01 |
1.05 |
1.00 |
| MinWool-1200 Industrial Board 1280 |
4″ (102mm) |
8 pcf (128 kg/m^3) |
1.11 |
0.91 |
1.03 |
1.03 |
1.06 |
1.07 |
1.00 |
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 Wall & Ceiling Liner M |
1″ (25mm) |
1.5 pcf |
0.18 |
0.36 |
0.59 |
0.86 |
0.95 |
0.90 |
0.70 |
| Knauf Wall & Ceiling Liner M |
1″ (25mm) |
2.0 pcf |
0.25 |
0.35 |
0.69 |
0.89 |
0.96 |
1.01 |
|
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 |
