- 1). Place self-adhesive drywall tape over the entire length of the seam. Ensure that the tape lies completely flat and is centered over the seam. The self-adhesive drywall tape is much easier to work with, especially if you have never finished drywall before.
- 2). Dig some joint compound out of the bucket with a 6-inch drywall knife and fill a drywall pan about half full. It is easier to work out of the pan than it is out of the bucket.
- 3). Smooth the joint compound over the taped seam using sweeping, even motions. Hold the knife at a forty five degree angle to the wall. The object is to cover the seam with the joint compound and make it as smooth as possible. Remove excess joint compound by holding the knife at more of an angle to the wall and lightly scraping. Let the joint compound dry for 24 hours.
- 4). Sand the seam using a pole sander with a drywall sanding screen attached. Do not press down too hard with the pole sander. The object with sanding is to remove high areas of the joint compound and feather the edges into the rest of the drywall.
- 5). Apply a second coat of joint compound using an 8- or 10-inch drywall knife. Smooth the joint compound over the seam as you did with the first coat. Let the second coat dry for 24 hours.
- 6). Use the pole sander with the sanding screen to sand the second coat as smooth as possible. The drywall is ready to be painted or wallpapered.
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