Base Layer: 5/8” (15.9 mm) ToughRock® Fireguard X® or 5/8” (15.9 mm) DensArmor Plus® Fireguard® gypsum panels applied vertically or horizontally using 1-7/8” (48 mm) 6d coated nails 6” (152 mm) o.c. to each side of 2” x 4” wood studs 16” (406 mm) o.c. Face Layer: 5/8” (15.9 mm) ToughRock® Fireguard X® Products or 5/8” (15.9 mm) DensArmor Plus Fireguard gypsum panels applied vertically or horizontally to studs over base layer with 2-3/8” (60 mm) 8d coated nails 8” (203 mm) o.c. Stagger joints 16” (406 mm) o.c. each layer and side. Sound Tested with studs 16” (406 mm) o.c. and with nails for base layer spaced 6” (152 mm) o.c.
