Solver, maybe you can help me out. I am attempting to create a rood overhang between a first and second floor. The instructions I found were to create a wall just exterior to the exterior wall and thus create a room. I set it the room and roof parameters as you describe. I created the over hang I wanted but I also seem to have extended the floor joist under this new room and this shows on my perspective view. I'm using HD Suite 2017.
Thanks