Metal stud walls in residential construction are generally created with C-shaped 20- to 25-gauge steel studs that are secured at the top and bottom with flanged tracks. If the wall is built correctly, all of the open sides of the C-shaped studs will face in the same direction. Before you begin installing drywall, note which direction the open sides are on.
Begin installing drywall panels in the corner of the room that's closer to the open sides of the metal studs. The first panel should fall midway across a stud, coming from the direction of the open side.
Attaching the panel this way will stabilize it; if you install the panel so the free end of the stud flange is loose, it may flex when you attach the drywall screws.
Screw the first panel at each corner using Type S drywall screws (1" is recommended for 1⁄2" drywall). These screws have a fairly sharp point that can penetrate the light-gauge metal flanges of the steel studs. As when attaching drywall to wood framing, take care not to overdrive the screws—they tend to take off rather aggressively once they engage in the metal.
Install the second drywall panel, leaving a slight gap at the joint. The new panel should be crossing the closed side of the C-shaped stud. Continue working in this direction until the wall is covered. Taping and seaming are done the same way as for wood framing.
