When you look for what is causing the leak then look at cracks at all the flashing on the roof.
Flat roof scupper leaks.
The sketch at left common leak points at flat roof drainage systems.
Corners on windows doors and scuppers are prone to cracking.
Sealing the most critical part of your roof the draining area scupper hope you like it guys.
Wherever there is a transition from the roof surface to an object like a vent pipe wall or drain flashing is present.
Scupper in good shape.
If it is wide enough the scupper will not get clogged with leaves.
Drains can be placed strategically in many areas of the roof.
Scuppers flat roof repair the cause of a major leak was due to incorrect leader headers on the other side of the wall.
The most likeliest cause of leaks is flashing.
The pictures below show some common problems with flat roof cool coated scuppers.
Greetings from ca usa eric.
This scupper is way to small for the size of this flat roof.
Smooth stucco is prone to cracking.
Scuppers drains on flat roofs are prone to leakage.
Inner drainage systems can t be seen from outside.
Click to enlarge any image scupper drains become blocked by leaves or other debris through building drains upper right in the sketch become clogged internally and burst flooding the building or leaks occur around the drain itself where it penetrates the roof.
Flat roof leaks are common because of many factors.
Scuppers are perfect for getting water off a roof but if water flow is restricted and water backs up into the scupper again that will cause leaks.