On Dec 18, 1:39*pm, Tomas wrote:
I recently added some greenboard that butts up to existing drywall.
The existing drywall has semi-gloss paint on it. How do I prep this?
Light sand? I don't want the mudd to start lifting or cracking.

Sand and prime the painted wall before you mud. Prime again when you
are finished with the drywall work.


Jimmie