Can you avoid tearing off your old asphalt shingle roof by putting a steel roof over it? Maybe. Most codes now allow no more than two layers of roofing before requiring a complete tear-off. So, if ...

Roofing isn’t a glamorous job. In fact, one could reasonably argue that it checks off the classic three Ds of automation — dull, dirty and dangerous — with aplomb. It’s a prime candidate for ...