The 2 most common leaks on a flat roof that you can repair yourself. You can repair most leaks with Liquid Flashing yourself. It takes just a brush, Turbo Poly Seal, and some preparation. Why spend thousands of dollars to have a Roofing Contractor come and do it for you? They might want to sell you a new roof installation instead.
This video reveals the cause of 95% of roof leaks.
Turbo Poly Seal - https://bergstromm.com/