Steel-Framed Wall

1/2” (12.7 mm) ToughRock® Fireguard C® or 1/2” (12.7 mm) DensArmor Plus® Fireguard C® gypsum board applied horizontally to one side of 3-5/8” (92 mm) steel studs 24” (610 mm) o.c. with 1” (25 mm) Type S drywall screws 8” (203 mm) o.c. to vertical joints and 12” (305 mm) o.c. to intermediate studs. Studs attached to top and bottom runner with Type S pan head screws. Opposite Side Base Layer: 1/2” (12.7 mm) ToughRock Fireguard C or 1/2” (12.7 mm) DensArmor Plus Fireguard C gypsum board applied horizontally to studs with 1” (25 mm) Type S drywall screws 24” (610 mm) o.c. Face Layer: 1/2” (12.7 mm) ToughRock Fireguard C or 1/2” (12.7 mm) DensArmor Plus Fireguard C gypsum board applied horizontally to framing with 1-5/8” (41 mm) Type S drywall screws 8” (203 mm) o.c. at end joints and 12” (305 mm) o.c. at perimeter and intermediate studs. Stagger vertical joints 24” (610 mm) o.c. Stagger horizontal joints 24” (610 mm) o.c. each layer and side. Fiberglass insulation, 2-3/4” (70 mm) thick, 0.30 pcf (4.8 kg/m3), friction fit in stud space.

1 Hour Unbalanced Steel Wall Frame Insulation
Hourly Rating: 1-hour
STC Rating: 50-54 STC
Fire Test Reference: WHI 495-06143, GA WP 10232
Sound Test Reference: RAL TL88-54
Approved for Assembly:
ToughRock® Fireguard C® Products
DensArmor Plus® Fireguard C® Products