| Product Name |
Density
lbs/ft3 |
125 Hz. |
500 Hz. |
1000 Hz. |
4000 Hz. |
NRC |
Rigidity |
Price/sq.ft. |
| Roxul AFB 1" |
2.5 lb. |
0.14 |
0.65 |
0.90 |
1.01 |
0.70 |
Flexible |
$1.75 |
|
Plus: Great sound absorption, low cost. Excellent choice for limited spaces when strength and rigidity are not needed.
Minus: Flexible like a batt or blanket. Not a problem if supported by a frame, fabric, etc.
|
|
| Roxul AFB 2" |
2.5 lb. |
0.28 |
1.09 |
1.09 |
1.07 |
0.95 |
Flexible |
$2.25 |
|
Plus: Excellent sound absorption, low cost. Best choice when strength and rigidity are not needed.
Minus: Flexible like a batt or blanket. Not a problem if supported by a frame, fabric, etc.
|
|
| Roxul Rockboard 60 |
6 lb. |
0.32 |
1.06 |
1.02 |
1.04 |
0.95 |
Rigid |
$3.25 |
|
Plus: Excellent sound absorption. Lower cost than 703 and 705. Good strength and rigidity. Best choice for an effective, affordable, rigid product.
Minus: More expensive than AFB if you don't need a rigid material.
|
|
| Rockwool Comfortboard 80 |
8 lb. |
0.43 |
0.90 |
0.97 |
1.00 |
0.90 |
Rigid |
$4.50 |
|
Plus: Excellent low freq sound absorption. Lower cost than 705. Good strength and rigidity.
Minus: Does not absorb mid to high frequencies quite as well as Rockboard 60.
|
|
| ATS Acoustics Rigid Fiberglass Board 1" |
3 lb. |
0.08 |
0.72 |
0.88 |
0.94 |
0.70 |
Rigid |
$2.12 |
|
Plus: An exact substitute for 703 at a better price. Minus: You get more sound absorption from a 2-inch material.
|
|
| ATS Acoustics Rigid Fiberglass Board 2" |
3 lb. |
0.21 |
1.08 |
1.04 |
0.96 |
0.95 |
Rigid |
$2.62 |
|
Plus: An exact substitute for 703 at a better price. Minus: A little more expensive than AFB and Rockboard 60 for the same sound absorption.
|
|
| Knauf ECOSEŽ 1" 3lb |
3 lb. |
0.08 |
0.62 |
0.88 |
0.99 |
0.65 |
Rigid |
$2.12 |
|
Plus: A more eco-friendly, formaldehyde-free substitute for 703 at a similar price.
|
|
| Knauf ECOSEŽ 2" 3lb |
3 lb. |
0.29 |
1.11 |
1.13 |
1.03 |
1.00 |
Rigid |
$3.25 |
|
Plus: An eco-friendly, formaldehyde-free sustainable insulation board. Similar to Owens Corning 703 insulation.
|
|
| Knauf ECOSEŽ Black Acoustical Board 2" |
3 lb. |
0.33 |
1.07 |
1.07 |
1.06 |
0.95 |
Rigid |
$7.75 |
|
Plus: An eco-friendly, formaldehyde free sustainable insulation board. Designed as an acoustical/visual barrier for wall and ceilings where black surface is required.
|
|
| Owens-Corning 703 4" |
3 lb. |
0.84 |
1.24 |
1.08 |
0.97 |
1.15 |
Rigid |
$4.12 |
|
Plus: Good low frequency absorption, strong and rigid. Minus: More expensive than two layers of Rockboard
or AFB.
|
|
| Owens-Corning 703 2" |
3 lb. |
0.17 |
1.14 |
1.07 |
0.98 |
1.00 |
Rigid |
$3.00 |
|
Plus: Well known product. Good for small projects where cost is not a big concern. Minus: More expensive than AFB and Rockboard 60 for the same sound absorption.
|
|
| Owens-Corning 703 1" |
3 lb. |
0.11 |
0.68 |
0.90 |
0.96 |
0.70 |
Rigid |
$2.12 |
|
Plus: Familar brand name, moderate strength and rigidity.
Minus: High cost, lower sound absorption (NRC) because it is only 1" thick.
|
|
| Owens-Corning 705 2" |
6 lb. |
0.16 |
1.02 |
1.01 |
0.99 |
0.95 |
Rigid |
$5.75 |
|
Plus: Strongest surface resists damage (like stiff styrofoam).
Minus: Expensive. Rockboard 60 is usually a better choice.
|
|
| Owens-Corning 705 1" |
6 lb. |
0.02 |
0.63 |
0.85 |
0.95 |
0.65 |
Rigid |
$3.62 |
|
Plus: Familar brand name, good strength and rigidity.
Minus: High cost, lower NRC because it is only 1" thick.
|
|
| ATS Recycled Cotton 2" |
2.5 lb. |
0.27 |
1.17 |
1.15 |
1.06 |
1.05 |
Flexible |
$3.25 |
|
Plus: Excellent sound absorption. High recycled content makes it the most eco-friendly choice.
Minus: Flexible like a batt or blanket. Not a problem if supported by a frame, fabric, etc.
|
|
| Owens-Corning 703 FRK 2" |
3 lb. |
0.63 |
0.95 |
0.79 |
0.35 |
0.75 |
Rigid |
$4.83 |
|
Plus: Excellent sound absorption. Most popular material for acoustic absorption.
Minus: The cost is higher that other insulation products, and some high-end frequencies will be reflected.
|
|
Here’s some pictures of our studio project to show other customers what can be done with your acoustic fabric. Thanks ATS! 
