I've decided to wall in my basement shop, to keep dust from traveling, and so I can be a bit less fastidious about keeping the shop clean. The basement already has finished walls and textured ceiling. I need to add 2 short walls with both running parallel to the ceiling joists. I want to preserve the textured ceiling as much as possible to minimize repair work. I can cut the ceiling to fit the top cap but odds are that the top caps will land in the bay between ceiling joists. If the ceiling was open, it would be easy to add blocking between joists to tie the top caps into. But with just a ~4" openiing in the ceiling, I'm not sure how I can add that blocking. So, before I tear everything apart, I figured it would be a good idea to ask the more experienced here if there might be some techniques to tie in the walls that I'm not aware off.
Thanks.