Internal Roof Drainage

Use an insulating fill or tapered insulation for slope.

Internal roof drainage.

Recess the drain below the roof surface. On large flat roofs mainly on commercial buildings or large residential complexes you ll likely find internal drainage systems. Watch for clogs blockage at the roof drain or scupper. At page top and at left our photos show a low slope roof surrounded by a parapet.

Properly locate roof drains scuppers and gutters to remove water from the roof s surface. The most important factors in roof drain design are. 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. Roofs of this design will have one or more roof drains or scuppers installed.

This is a drainage point that can be installed across the roof s surface even in the centre of the roof. Roof drains from zurn include combination primary overflow control flow dual outlet siphonic retrofit and more which cater from educational to commercial needs. The drainage requirements for flat roofs on buildings present some special problems that we describe and illustrate here. This form of roof drainage is preferred if a clean exterior appearance is desired.