Internal Roof Drainage

Properly locate roof drains scuppers and gutters to remove water from the roof s surface.

Internal roof drainage.

Watch for clogs blockage at the roof drain or scupper. Unlike scupper or gutter drainage systems in which water flows off the side of the roof internal systems allow for drains to be strategically placed throughout a roof deck to ensure water doesn t pool. Recess the drain below the roof surface. At page top and at left our photos show a low slope roof surrounded by a parapet.

On large flat roofs mainly on commercial buildings or large residential complexes you ll likely find internal drainage systems. Use an insulating fill or tapered insulation for slope. Roof drains from zurn include combination primary overflow control flow dual outlet siphonic retrofit and more which cater from educational to commercial needs. If water collects in one spot in the middle of your roof then installing an interior drain there to move the water is a good solution.

This form of roof drainage is preferred if a clean exterior appearance is desired. The most important factors in roof drain design are. Roofs of this design will have one or more roof drains or scuppers installed. Properly slope the structural framing and deck minimum inch per foot.