Green vapor barrier Questions

What kind of waterproofing can you use in crawlspaces to help with going green?

— Michael Deal Charlotte, NC

Answered by Danny Kelly on August 30, 2010

Should I leave an air space between my attic insulation and the wood roofing?

— D.L. Bennett, Arlington, VA

Answered by Mike Binder on March 5, 2009

Is there a greener alternative to polyethylene housewrap?

— Oresta Korbutiak, Ottawa, ON, Canada

Answered by Mitch Boucher on August 7, 2007