Gypsum Wall Assemblies

Standard Wall Assembly:
This is a standard stud wall, only with 24” OC studs. 16” OC studs are far more common in residential and commercial construction. As you can see below, a 16” OC wall performs poorly.
| STC | Source Side | Wood Studs | Insulation | Receive Side |
|---|---|---|---|---|
| 37 | One 5/8" layer of drywall | 24" OC | None | One 5/8" layer of drywall |
| 40 | One 5/8" layer of drywall | 24" OC | R13 | One 5/8" layer of drywall |
| 42 | Two 5/8" layers of drywall | 24" OC | R13 | One 5/8" layer of drywall |
| 44 | Two 5/8" layers of drywall | 24" OC | R13 | Two 5/8" layers of drywall |
