Internal Roof Drainage

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.

Internal roof drainage. Use an insulating fill or tapered insulation for slope. 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. Properly locate roof drains scuppers and gutters to remove water from the roof s surface.

Recess the drain below the roof surface. The drainage requirements for flat roofs on buildings present some special problems that we describe and illustrate here. 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. On large flat roofs mainly on commercial buildings or large residential complexes you ll likely find internal drainage systems.

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. This is a drainage point that can be installed across the roof s surface even in the centre of the roof. Watch for clogs blockage at the roof drain or scupper. The most important factors in roof drain design are.