Steel-Framed Wall

Base Layer: 1/2” (12.7 mm) ToughRock Fireguard C gypsum board or 1/2” (12.7 mm) DensArmor Plus Fireguard C applied vertically to each side of 1-5/8” (41 mm) steel studs 24” (610 mm) o.c. with 1” (25 mm) Type S drywall screws 36” (914 mm) o.c. Second Layer: 1/2” (12.7 mm) ToughRock Fireguard C gypsum board or 1/2” (12.7 mm) DensArmor Plus Fireguard C applied vertically to each side with 1-5/8” (41 mm) Type S drywall screws 24” (610 mm) o.c. Face Layer: 1/2” (12.7 mm) ToughRock Fireguard C gypsum board or 1/2” (12.7 mm) DensArmor Plus Fireguard C applied vertically or horizontally to each side with 2-1/4” (57 mm) Type S drywall screws 12” (305 mm) o.c. and 1-1/2” (38 mm) Type G drywall screws midway between studs 1-1/2” (38 mm) above and below horizontal joints. Joints staggered. Sound Tested with 1-1/2” (38 mm) glass fiber insulation, friction fit in stud space.

Hourly Rating: 3-hour
STC Rating: 50-54 STC
Fire Test Reference: UL U435, cUL U435, GA WP 29222
Sound Test Reference: WEAL 87-118
Approved for Assembly:
ToughRock® Fireguard C® Products
DensArmor Plus® Fireguard C® Products