Q: When you were writing about roof repair and replacement, I never saw anything on tar-and-gravel roofs. I just bought a house. At my prepurchase inspection, I was told the roof was in pretty good ...

Q:We would appreciate your advice regarding our San Francisco home's roof. We have a 1915 Edwardian with a flat tar-and-gravel roof in one of the "sunny" San Francisco neighborhoods. We've had the ...