What are the rules for cigarette smoking on a LEED jobsite?

— Carey Westover Los Angeles, CA

Answered by Elizabeth DiSalvo on August 15, 2011

Is there one brand of vinyl windows that is more energy efficient and reliable?

— Margy Brookes San Diego, CA

Answered by Elizabeth DiSalvo on December 22, 2010

We need to find a nontoxic concrete sealer. We have a child with respiratory problems.

— Susan Blumberg Scarsdale, NY

Answered by Elizabeth DiSalvo on December 22, 2010