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What are the "cleanest" materials for a fresh-air intake duct?

— Brian Trenton, NJ

Answered by Scott Collins on June 17, 2010

Are there any nontoxic, non-offgassing replacement windows available? Also, how does one identify nontoxic sheetrock in stores?

— jean roper Newton Highlands, MA

Answered by David Edwards PhD on June 6, 2010

What are some of the health benefits of building green?

— jay Roswell, GA

Answered by David Edwards PhD on June 2, 2010

I have a home with exposed fiberglass insulation in the basement. Can the fibers degrade and become airborne?

— Aaron Schorsch Shepherdsville, KY

Answered by Erik Henry on May 27, 2010

We purchased a leather sofa in Feb. and within the last month, my husband and I have been having symptoms. How can we tell if it's the sofa?

— Maxine Thousand Oaks, CA

Answered by Erik Henry on May 27, 2010

Can you recommend a whole-house water filtration system?

— james San Francisco, CA

Answered by Tammy Schwolsky, LEED AP, GPR, HPwES on May 22, 2010

How can you add fresh-air ventilation to an old home with a forced-air system and only supply ductwork throughout?

— John Indianapolis, IN

Answered by Danny Kelly on May 20, 2010

I am concerned about spillage and backdrafting of water heat, but to install a power-venting unit requires PVC to be run through my house.

— John Indianapolis, IN

Answered by Danny Kelly on May 20, 2010

Do faux wood blinds have any harmful chemicals that we need to be aware of? Can you recommend the safest kind?

— Margarita Bardetsky Houston, TX

Answered by Kati Curtis, LEED AP ID&C, CID on May 20, 2010

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

— Mary Maple Valley, WA

Answered by Erik Henry on May 20, 2010

 
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