Flat Roof Scupper

Have a flat roof. Surface area is rather small given it’s a porch roof. The roof was done about 5 years ago. Recently the plaster ceiling cracked and partially collapsed. The roofing company determined it was due to an improperly sealed scupper and fixed it thankfully. When their rep came he said the rain gutters should have been removed when the roof was done. I’m not sure why but he seemed to imply that was part of the cause for the leak. I am a novice at this but my understanding is the components are a scupper, conductor head and a down spout. Why would the conductor head or down spout require removal? If they didn’t remove it to perform the repair, is this a problem? I was told they used mastic and silicone to make sure the scupper wont leak again. What to think?

 

I was almost strictly a commercial architect before I retired, so the vast majority of the roofs I did were flat. Mostly we used interior roof drains, but when we used scuppers, we always had a downspout. The only exception was on emergency overflow scuppers because they seldom operated as a scupper unless something went wrong elsewhere. It almost sounds like they needed an excuse for the leak. Are they and you pretty sure the leak originated at the scupper? Without seeing how the scupper was originally designed and installed, hard to comment on what the repair should be and whether mastic and silicone is an appropriate repair.

 

Bruce thanks for your response. That is what they say but I am waiting for some heavy rain before sealing it up so I can see for myself. Will keep you posted.