Step 6
Apply thin and even coat of joint compound directly on the wall over seam. Tip – You may need to add water to the joint compound to create a consistency of a thick milkshake. It should spread easily without falling off your knife.
Step 7
Place paper drywall tape over seam and smooth with 6″ putty knife. It is easier if you “tape” one seam at a time, slightly overlapping tape. Tip – Keep the area a flat – level as possible. This will make the following coats of joint compound easier to apply and easier to feather into the existing wall surface. Allow to dry thoroughly.
Note – Many websites and even professionals will show the use of fiberglass tape for patches. Gypsum manufacturers recommend using paper drywall tape with regular joint compound.