I'm trying to determine if I need a nailer where the yellow line is. I'm wondering if I can support the hanging edge of the drywall on the ceiling (red line) by the drywall that will be on the wall (blue line). Make sense? In other words, I'll drywall on the blue plane and leave ~1/2" at the top so that the drywall on the red plane can snug on top of it, be supported and not hang. The "hang" is < 12", btw. What do you think?
Said yet another way, there is no place to nail at the yellow line for the red plane.
Thanks in advance.