Kbird1,
The "ceiling in this room" is unchecked because as I explained, the room height is only 36"; however, I did uncheck the "use soffit surface for ceiling" and that fixed the exposed areas. I assumed that I would have no sheetrock at if I had unchecked that box. As far as the roof goes, I never use the automatic roof rebuild, so that is not the issue. See Jo_Ann's response about the roof. I haven't looked at her suggested thread yet, but I think she's right about the program limitations.
Thanks,
Teresa