1/2” (12.7 mm) ToughRock® Fireguard C®gypsum board applied vertically to each side of 2-1/2” (64 mm) 18 mil steel studs 24” (610 mm) o.c. with 1” (25 mm) Type S drywall screws 8” (203 mm) o.c. at vertical joints and 12” (305 mm) o.c. at intermediate studs. 1-1/2” (38 mm) mineral fiber insulation, stapled to board in stud space. Joints staggered. Sound Tested with 2” (51 mm) mineral fiberglass insulation. Non-Load Bearing
