How to do it
Install Drywall at Corners
It can be tricky to choose the right material for your corner bead. To many traditionalists, vinyl is another word for plastic, and plastic can be cheap and brittle. But modern plastics technology produces high-performance materials that warrant consideration. For example, an abuse-resistant vinyl corner bead might be the right choice for high-traffic corners where impact is inevitable. If you've ever dented metal corner bead with a misplaced hammer blow during construction, you know that replacement is the only practical choice. Composite corner beads are also impact-resistant and have the added benefit of conforming to corners that are substantially more or less than 90 degrees. If it isn't 90 degrees, a drywall pro calls it an "off angle."
Nail Corner Bead
A corner bead clincher helps you squarely position the metal strip and then quickly fasten it. Each time you hit the clinching tool, it cuts prongs of metal and forces them into the drywall. For added security, drive three nails through each leg of the corner bead to establish a mechanical connection with the framing.
Line Up Drywall Corners
Attach Bullnose Corner Bead
Bullnose corners add style and interest to your installation, but they can also create problems when you install millwork. For example, turning an outside corner with baseboards or crown moldings could call for fancy carpentry skills and tedious fabrication. Fortunately, there's a solution that you can simply nail in place when you're installing the bullnose bead. The vinyl cap shown works with both metal and vinyl beads that have a 3/4-inch radius and enables you to install moldings up to 4-1/2 inches wide. Simply nail the blocks where you need them, and cut the strip of bullnose bead to fit. For a perfect size match, get both the bullnose bead and transition cap from a single manufacturer.