Is an asphalt shingle roof or concrete tile better, energy wise?

— ryan dyck Moorpark, CA

Answered by Michael Holcomb on August 20, 2012

Do water heater timers work as advertised?

— Stephan Pollard Fayetteville, AR

Answered by Michael Holcomb on May 23, 2012

What's the best way to insulate the underground walls in our basement?

— Sarah Nugent Orland, ME

Answered by Michael Holcomb on May 7, 2012