I have a very large building with a flat roof. It has built-up roofing with the gravel on it. I had a minor roof leak after a heavy wind/ rain storm so I had a roofer come out and look at it. The roof leak was from a deteriorated seal by a vent. But the roofer is telling me that the gravel is "scoured" and the whole roof needs to be replaced. I cannot see where the base "paper/ felt" is damaged, but the gravel is bare in some areas. If the gravel has been displaced, does all of the roof need to be replaced or can just the gravel be replaced?
Greatly appreciate your responses.
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