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 ...

Cons: Foam board insulation can be harder to install snugly in unusually shaped spaces, leaving gaps for air to flow. To create an effective air and moisture seal, you need to tape all seams between ...

Tom spent 20 years running his own contracting company, working as a building mechanic and operating as a carpenter. Now he creates solar, home security, moving and home warranty content content for ...