Where to Use Drywall Tape?

Drywall tape is designed with a manufactured seam or fold down the middle (graphic right). This seam makes it easy to fold long lengths of tape for use on inside corners. Because this seam is slightly raised, you should always install drywall tape with the outside raised area of the seam against the wall.

Do you have to use drywall tape?

In almost all cases, you need to apply drywall tape to the seams to reinforce the compound and keep it from crumbling out when dry. Drywall pros use paper tape, because it's fast and offers the smoothest finish, but it can be difficult to work with. Fiberglass mesh tape is more user-friendly.

What happens if you don't tape drywall?

What Happens if You Don't Use Tape on Drywall? If you don't use drywall tape when sealing drywall joints with “mud” then your mud will crack and fall out of the joint. Not only that, but it is much more difficult to get a clean, finished look by loading joint compound into a drywall joint without properly taping it.