dvanelli

Hello, I do not know if this is the correct place to ask this question, but, I cannot figure out how to correct this and have investigated all the wall & room settings I can. I am modelling a small sunroom addition to a house. Pictures attached. It appears that one outside wall works when the roof pane is manually added / the other side does not fill in the "attic" space. Pictures attached. It seems nothing I do changes this? Best, -Donnie