Why Tape Drywall Seams?

All drywall seams need to have tape embedded in joint compound. The tape strengthens the joint, and the joint compound, or mud, is the adhesive that holds the tape in place. ... This saves you from the juggling act of applying mud and tape simultaneously.

What happens if you don't tape drywall seams?

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.

Do you need to use tape drywall seams?

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.