TOPIC:

Sometimes you will get a wall or other component of the roof breaking through the roof surface, e,g: This can usually be resolved by moving the roof by a small amount relative to the wall upon which it was originally placed: A guideline has been placed parallel to the wall and the roof point is moved from the wall corner to the new position on the guideline. It is important that the same is done on the other end of this wall so that the roof remains parallel to the wall.