Should I be concerned about the radiation that quartz countertops emit?

— saga Fort Lauderdale, FL

Answered by David Edwards PhD on June 2, 2010

Should I follow my service company's advice and replace my current AC unit with a new "environmentally friendly" Freon unit?

— Gaby Mendelsohn Charleston, SC

Answered by Steve Saunders on June 1, 2010

Are Squak Mountain Stone, ShetkaStone and Lithistone sustainable options for kitchen countertops, or are there better alternatives?

— Erika De Boever

Answered by Susan Davis on June 1, 2010

I recently moved into an apartment with new wall-to-wall carpet that is creating health issues for me. What should I do?

— Nicole Monsey, NY

Answered by Douglas King on June 1, 2010

What are some of the health benefits of building green?

— jay Roswell, GA

Answered by David Edwards PhD on June 1, 2010

Is an engineered hardwood floor that is FloorScore certified a good choice for the bedroom of a severe allergy sufferer?

— Stephanie Masson Natchitoches, LA

Answered by Kati Curtis, LEED AP ID&C, CID on June 1, 2010

I have an old solar panel from 1984 on my roof. It is no longer connected. Could it still be good?

— Cecilia Hartley Mesa, AZ

Answered by David Edwards PhD on June 1, 2010

My roof has two layers of 4-inch foam insulation with a 2-inch gap between them. Do I need to vent this gap to stop condensation?

— Kerry Fenn Fort Lauderdale, FL

Answered by Bill Bradbury on June 1, 2010

My new apt. has inefficient electric heaters plugged directly into outlets. What can I replace these with without redoing the whole system?

— Andrea New York, NY

Answered by Bill Bradbury on June 1, 2010

Where can I find radon testing equipment for granite countertops? And what are safe levels?

— Lorraine Windsor, CA

Answered by Bill Bradbury on June 1, 2010

We use baseboard heat and hot water that comes off an oil furnace: can we supplement with solar water heating?

— Jen H Castine, ME

Answered by David Edwards PhD on June 1, 2010

How do I go about rerouting my pipes so the greywater from my shower and sink can be used to flush the toilet?

— Richie Anchorage, AK

Answered by David Edwards PhD on May 31, 2010

Does carpet cushion really matter?

— Dan Douglasville, GA

Answered by Randy Potter on May 28, 2010

Should I use open or closed-cell foam insulation only on attic and gables, not walls? I do not want water problems.

— Gail Johnson Crowley, LA

Answered by Hamid Kashani - AIA on May 28, 2010

Is it ever okay to have exposed fiberglass insulation in a room?

— cindy Burnsville, MN

Answered by Hamid Kashani - AIA on May 28, 2010

 

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