The wire lathe bit has me a little confused. I'm assuming the walls are bare like new construction, i.e. the drywall is finished without paint. If that's the case, you'll want a good primer coat, ask if you need help selecting a suitable primer.
As for the tops of the walls, tell her to put some crown up, problem solved. Same for bottoms if they have gaps, just run some baseboards.
Give us a better idea what kind of lathe is on the walls. Are you sure those aren't the metal corner beads? If they are, it should be floated out to make a flat, square corner with drywall compound. The very tip of the corner beads are slightly rounded, and should still be slightly exposed prior to painting.
If you're not putting up crown, I would recommend filling the holes with strips of wallboard, then taping and mudding those corners between wall and ceiling. I wouldn't recommend just filling with gobs of mud in any case.
Got a pic of the lathe?
EDIT: Are those plaster walls??????? Forgot all about that, lol!
As for the tops of the walls, tell her to put some crown up, problem solved. Same for bottoms if they have gaps, just run some baseboards.
Give us a better idea what kind of lathe is on the walls. Are you sure those aren't the metal corner beads? If they are, it should be floated out to make a flat, square corner with drywall compound. The very tip of the corner beads are slightly rounded, and should still be slightly exposed prior to painting.
If you're not putting up crown, I would recommend filling the holes with strips of wallboard, then taping and mudding those corners between wall and ceiling. I wouldn't recommend just filling with gobs of mud in any case.
Got a pic of the lathe?
EDIT: Are those plaster walls??????? Forgot all about that, lol!
