Internal Roof Drainage

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

Internal roof drainage.

The drainage requirements for flat roofs on buildings present some special problems that we describe and illustrate here. Roofs of this design will have one or more roof drains or scuppers installed. This form of roof drainage is preferred if a clean exterior appearance is desired. Recess the drain below the roof surface.

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. Use an insulating fill or tapered insulation for slope. 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. Roof drains from zurn include combination primary overflow control flow dual outlet siphonic retrofit and more which cater from educational to commercial needs.

Watch for clogs blockage at the roof drain or scupper. Internal roof drains these will drain to somewhere near the center of the roof and down through the building to underground storm mains or a detention pond. On large flat roofs mainly on commercial buildings or large residential complexes you ll likely find internal drainage systems. This is a drainage point that can be installed across the roof s surface even in the centre of the roof.