Can you recommend a mold/mildew remover for cedar siding?

— Mary Maple Valley, WA

Answered by Erik Henry on May 20, 2010

Do I need an indoor air quality test? How much will it cost?

— Wendy Nield Los Angeles, CA

Answered by Evan Little on May 13, 2010

I need to replace my ducts. What type of duct would be best?

— Nadine Findley Concord, CA

Answered by David Lavender on April 25, 2010

What is the safest drywall for our contractor to install? I am concerned about offgassing.

— Steve and Linda Allen Newbury Park, CA

Answered by Karen Smuland on April 24, 2010

What are the top five ways to improve my indoor air quality naturally?

— Janice Levine Denver, CO

Answered by Evan Little on April 8, 2010