No wall signs shall protrude or extend above the lowest point of the roof of the building or structure to which the wall sign is attached. That portion of a mansard roof which is no higher than the lowest point of the roof of the building or structure to which the mansard roof is attached shall be considered part of a wall and not a roof; the other portion of a mansard roof shall be considered a roof and not part of a wall. (Ord. 93-485, 7-13-1993)