Drywall Outside Corners –
For a smooth, seam-totally free appearance when finishing drywall outside corners, apply a metal corner bead, and be prepared to coat it with a lot of drywall mud. Comply with the actions outlined beneath to finish drywall outside corners.
Step 1: Apply Metal Exterior Corner Bead to Outside Corner
Measure and cut metal corner bead to match the corner. With the power drill and screws, attach the corner bead to the corner. Place in a screw for each and every six inches of vertical height, on each and every side, and countersink the screws. Add screws at 3-inch intervals if the corner bead is not lying flush to the drywall.
Step two: Apply the Initial Coat of Drywall Mud
Use the 4-1/two inch putty knife to apply the 1st coat of drywall mud, at full consistency, from the prime of the wall to the floor. On later coats, you will require to thin the drywall mud with water but not the 1st coat. Spread it out more than the corner bead, and to about 5 inches beyond the corner bead on every side. Don’t cover the vertical joint of the corner bead. It provides the wall corner its sharp, 90-degree angle. Smooth more than the surface with the 10-inch putty knife. The smoother every single coat of drywall mud goes on, the better your final finish will look. Wait about 30 hours for the first drywall mud coat to dry. Clean your tools between every single coat of drywall mud.
Step three: Trim the Drywall Mud Coat
Skim the ten-inch knife, with its blade dry, down the drywall mud to knock off pellets. When the knife hits no high spots, apply the subsequent coat of drywall mud.
Step four: Second Coat of Drywall Mud
Apply drywall mud, nonetheless at full thickness, to each side, 6 inches beyond the edges of the metal corner bead. Dampen the massive putty knife and smooth out the drywall mud very carefully, to avoid washboard horizontal ripples. Fill in the screw heads and smooth over them. Discard any unused drywall mud and clean up your tools. Take away bumps and pellets from the mud surface right after it dries with the dry blade of your massive putty knife.
Step five: Later Coats of Drywall Mud
Apply two much more coats of drywall mud, now thinned slightly with water. Spread the next coat out to 8 inches beyond the corner support, and the last coat 10 inches to each sides. Guarantee the joint of the corner bead is exposed metal right after the last coat. It will be primed and painted, so it will not be visible.
Step six: Sand the Surface
Use the 220-grit sandpaper to buff the surface. Brush and vacuum the sanded surface and check for imperfections with a problems light. Cover any hollows or scratches with thinned drywall mud, and smooth down firmly with the modest putty knife.
Step 7: Prime and Paint
Apply latex primer and latex paint, as for any drywall surface.