Roof scuppers are not the same as roof drains. Roof drains channel water through the deck of the roof into a piping system that carries water away, while a scupper allows water to drain through an opening in the side of the roof edge. If a roof scupper becomes blocked or clogged and prevents water from draining from the roof surface, this could cause ponding or roof leaks. Cleaning and checking your roof drainage system is an important roof maintenance item.
