Can cork or bamboo flooring be used over a radiant flooring system?

— Polly Dawson Concord, NH

Answered by FERELLO CROKER on January 16, 2012

Can you suggest a non-toxic finish to protect a vinyl bar top?

— NANCY PICKARD Beverly Hills, CA

Answered by Polly Osborne, AIA, LEED AP on January 13, 2012

Is it really possible to get a radon-free granite counter?

— Michelle Washington, DC

Answered by Molly McCabe, AKBD, CGP, CAPS on January 13, 2012

How do I make sure a residential condominium has good and proper lighting?

— JC Soriano Pasadena, CA

Answered by David Bergman on January 12, 2012