How do I repair an area of the furnace that is thinning?

— Robert Philadelphia, PA

Answered by Scott Grieves, CPM, CEA on January 21, 2015

I need help designing a new house that is naturally ventilated.

— Paul St. Michael Brooklyn, NY

Answered by Sean Lintow Sr on January 14, 2015

Can you recommend an eco-friendly shed material?

— Anita Wang Bellevue, WA

Answered by Harold Remlinger, AIA, LEED AP, NCARB on January 13, 2015

Who do I call to have my air tested in my home?

— Kathy F North Jackson, OH

Answered by Scott Grieves, CPM, CEA on January 6, 2015

should i us open cell or closed cell

— john looper Longdale, OK

Answered by Sean Lintow Sr on January 6, 2015

Floor Inslulation

— Bob Galipeau Bellingham, MA

Answered by Sean Lintow Sr on January 6, 2015

Is there a sealant that will prevent oak and maple off gassing?

— Stephen Potchak Philadelphia, PA

Answered by Sean Lintow Sr on January 6, 2015