|
Composite foams combine
BlockAid® Barrier, acoustical
foam (either
Polyurethane
or
FireFlex™)
and a ¼" Foam/Barrier Decoupler. Composite Foam
is used when you need increased noise
absorption, sound transmission loss and/or
vibration damping. Composite foams can be used
to create soundproof enclosures for machinery
and noisy equipment. |
|
|
|
|
Size: |
24" x 48"
sheets |
|
|
|
|
Thickness: |
Foam Only = 1" /
Foam + Barrier + Foam =
1-3/8" |
|
|
|
|
Material / Color: |
Polyurethane:
Charcoal / FireFlex™: Light Grey |
|
|
|
|
Film Facings: |
Mylar (Reflective)
Tuftane (Grey or Black) |
| |
|
|
|
|
|
Note: "Sound Absorption Coefficients" and
"Sound Transmission Loss” numbers in table are
for foam barrier foam configuration: |
|
Sound Absorption Coefficients |
|
125 Hz |
250 Hz |
500 Hz |
1000 Hz |
2000 Hz |
4000 Hz |
NRC |
|
0.33 |
0.24 |
0.63 |
1.23 |
1.35 |
1.14 |
0.85 |
|
| |
| |
|
Sound Transmission Loss (dB) |
|
125 Hz |
250 Hz |
500 Hz |
1000 Hz |
2000 Hz |
4000 Hz |
STC |
|
20 |
21 |
25 |
28 |
32 |
42 |
29 |
|
|
|
|
