Flashing, pipe boots, vent penetrations, and valleys are common places where Marietta roofs leak

https://titusmxtc099.solsticebrief.com/posts/questions-to-ask-a-marietta-roofing-contractor-before-you-hire

Flashing, pipe boots, vent penetrations, and valleys are common places where Marietta roofs leak, especially during wind-driven rain, making proper sealing and inspection important after storms.