Do I need to run foam insulation right up to the top plate?
I'm in the process of fitting rigid foam insulation to my basement walls. I just realized that I won't have access to the area in front of the rim joist if I run insulation right up to the ceiling. None of the basement is fully below grade, so I wonder if I need to run the foam all the way to the top plate, or can I get by with running it up to the top of the concrete block? I plan on running a piece along the rim joist, and I can put a horizontal piece on top of the block.