There is a tutorial on how to draw a sloped ceiling. I managed to do that but how do i get rid of the excess walls above the roof afterwards?
In plane view, right side menu- click on the wall, change the wall height to 'partial' and then input the exact height of the wall desired. Or you can raise the slated roof to the height of the existing wall, just remember to go to plain view and in right side menu click to remove ceiling.

