Steel-Framed Wall

5/8” (15.9 mm) ToughRock® Fireguard X™ (UL U421 only)Products or 5/8” (15.9 mm) DensArmor Plus® Fireguard® interior panels applied vertically or horizontally to one side of 2-1/2” (64 mm), 25-gauge (18 mils) steel studs 24” (610 mm) o.c. with 1” (25.4 mm) Type S drywall screws 8” (203 mm) o.c. at vertical joints and 12” (305 mm) o.c. at intermediate studs when applied vertically to framing, or 8” (203 mm) o.c. when applied horizontally to framing. Opposite side: Base layer – 5/8” (15.9 mm) ToughRock® Fireguard X™ (UL U421 only)Products or 5/8” (15.9 mm) DensArmor Plus Fireguard interior panels applied vertically or horizontally to studs with 1” (25.4 mm) Type S drywall screws 8” (203 mm) o.c. at vertical joints and 12” (305 mm) o.c. at intermediate studs when applied vertically to framing, or 8” (203 mm) o.c. when applied horizontally to framing. Second layer – 5/8” (15.9 mm) ToughRock® Fireguard X™ (UL U421 only)Products or 5/8” (15.9 mm) DensArmor Plus Fireguard interior panels applied vertically or horizontally to studs with 1-5/8” (41 mm) Type S drywall screws 12” (305 mm) o.c. Face layer – 5/8” (15.9 mm) ToughRock® Fireguard X™ (UL U421 only)Products or 5/8” (15.9 mm) DensArmor Plus Fireguard interior panels applied vertically or horizontally to studs with 2-3/8” (60 mm) Type S drywall screws 8” (203 mm) o.c. at vertical joints and 12” (305 mm) o.c. at intermediate studs when applied vertically to framing, or 8” (203 mm) o.c. applied horizontally to framing. Horizontal joints staggered not less than 6” (152 mm) between layers. When gypsum panels are other than 48” (1219 mm) wide, panels are applied horizontally to the framing. Vertical joints staggered 24” (610 mm) each layer and side. Sound tested with 2-1/2” (64 mm) fiberglass insulation.

Hourly Rating: 2-hour
STC Rating: 55-59 STC
Fire Test Reference: UL U421,ULC W4773,cUL U421,GA WP 15552
Sound Test Reference: RAL TL10-196
Approved for Assembly:
DensArmor Plus® Fireguard C® Products
DensArmor Plus® Fireguard® Products
DensElement™ Barrier Sheathing
DensGlass® Fireguard® Sheathing
DensShield® Fireguard® Tile Backer
ToughRock® Fireguard C® Products
ToughRock® Fireguard X™ Mold-Guard™ Products
ToughRock® Fireguard X™ Products
ToughRock® Lite-Weight Fire-Rated Products