How to hang plasterboard: pro tips for cutting and installing
It’s tempting to cut the first piece of an outside corner flush with the framing and run the perpendicular piece flush with the first. Don’t do it. If you run the first piece just a little too long, the second piece will flare out. If you cut the second piece a bit too long, it will have to be shaved down to accommodate the corner bead. A good-quality metal corner bead will cover a gap and hold up as well as a perfectly flush corner—without the fuss.