In your new addition, you may need to install some drywall. What is the method used to seal the joints on drywall?
Answer Taping and Mudding
The first part to finishing drywall is applying tape over the joints between your installed drywall. Mudding is the next part of the process in which you fill screw or nail holes with plaster, after which the walls are sanded down to become flat.
Asked by Jason Forbes · Last updated 5 years ago · 22.2K views · SOURCE