Joining new drywall to old
In a current rehab we are adding a couple of walls that will join existing walls at right angles. The existing walls and ceilings are textured, and we will texture the new walls as well. The problem is, how do we tape and mud the corners between the old and new? Do we need to sand down the old walls where they meet the new?
The texture on the walls is not very heavy - it's known around here as "knock-down" or "orange peel". The ceiling texture is popcorn.