STC is expressed in decibels (dB) and is used to measure a building material's ability to reduce sound. A higher STC rating translates into more reduction in sound. Laboratory testing is used to measure the resistance of partitions such as walls, windows, or entry doors to the passage of sound.
The material with the lowest resistance to the passage of sound limits a partition's STC value. Poor construction practices can also nullify a partition's sound reduction properties. Cracks due to improperly fitted doors or windows can be a prime source of sound leakage.
Family | Configuration | STC | Comment |
---|---|---|---|
Deco | Decorative glass with caming | 31 | Third party tested (1.39 M) Adobe PDF |
1-lights, grilles between glass, external grilles |
1/2" IG, clear glass 1-light, 1/4" air space, Intercept® spacer |
26 | Third party tested (1.39 M) Adobe PDF |
1/2" IG, clear glass, external grille, 1/4" air space, Intercept® spacer |
26 | Third party tested (1.39 M) Adobe PDF |
|
1" IG, clear glass 1-light, 3/4" air space, Intercept® spacer |
28 | Third party tested (1.39 M) Adobe PDF |
|
1" IG, clear glass, grilles between glass, 3/4" air space, Intercept® spacer |
30 | Third party tested (1.39 M) Adobe PDF |
|
Simulated divided light, grilles between glass with external grilles, 3/4" air space, Intercept® spacer |
30 | Third party tested (1.39 M) Adobe PDF |
|
Sound Suppression | 1" IG 1-light with laminated glass | 34 |
Third party tested |
Severe Weather |
Severe Weather, dual-glazed blind, with Intercept® spacer, slats raised |
39 | Third party tested (1.39 M) Adobe PDF |
Severe Weather, 1-light door glass |
35 | Third party tested (394 K) Adobe PDF |
|
Severe Weather, decorative door glass |
37 | Third party tested (1.39 M) Adobe PDF |
|
Blinds | Triple-glazed, grilles between glass blind, with Intercept® spacer, slats lowered and closed |
34 | Third party tested (394 K) Adobe PDF |
Dual-glazed blind, with Intercept® spacer, slats lowered and closed |
32 | Third party tested (394 K) Adobe PDF |
|
Sliding patio door blind, Intercept® spacer, slats lowered and closed |
28 | Third party tested (394 K) Adobe PDF |
|
Door and window reference information |
3' x 7' steel door, 1-3/4" thick with polyurethane core |
26 | From HUD Noise Notebook* |
30" x 48" aluminum clad casement window, 1" IG with 1/8" panels |
29 | From HUD Noise Notebook* |
215 East Roosevelt Ave.
Zeeland, MI 49464 USA
800.253.3900
doorglass_info@odl.com
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