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

Is there any way to "seal in" VOCs in floor paint?

— Aaron Columbia, MO

Answered by Olga G. Alvarez, LEED-AP ID+C on October 27, 2010