A sound roof with a failed detail
A cracked collar around a plumbing vent or a loose section of flashing can let water through while the surrounding roof is still serviceable. The repair needs to rebuild the water-shedding detail and connect it to sound roofing.
For shingle work, the adjoining shingles need to lift without breaking, the new material needs to fit the system, and the deck and flashing must provide sound connections. A small visible defect does not settle those questions by itself.










