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The attic in our 2004 house has no insulation. Will spray foam irritate my asthma?

— Marie Richmond Hill, GA

Answered by Danny Kelly on December 2, 2010

I have a 1940s Cape Cod in northern Ohio that has no eaves. What is the best way to insulate the finished attic space?

— Brian Hudson, OH

Answered by Elliot Seibert on November 25, 2010

Would batt or blown fiberglass insulation be the least toxic?

— Monica Mechanicsburg, PA

Answered by Andy Ault, CLC on November 2, 2010

Do you recommend bio-based soy foam insulation?

— Amy Alexandria, VA

Answered by Andy Ault, CLC on November 1, 2010

Should we insulate the attic of our 1926 bungalow with spray foam insulation?

— Amy Alexandria, VA

Answered by Anthony Addesso on October 31, 2010

We need an insulated white roof on our home. Which is the best membrane, TPO or PVC? How thick should the polyiso be?

— Kimberly Trombley Saint Petersburg, FL

Answered by Polly Osborne, FAIA, LEED AP on October 16, 2010

Most people say to use open cell foam for attic roof leaks. Could I spray closed cell foam over baffles from soffit to ridge vent?

— Greg Childress Charlotte, NC

Answered by Danny Kelly on October 11, 2010

I would like to insulate my attic before winter. What product do you recommend, and what thickness, for an attic floor?

— mc New Rochelle, NY

Answered by Anthony Addesso on October 7, 2010

Can louvre gable vents be put under our overhangs to provide intake air for our attic fan? Soffits are covered with loose insulation.

— John Husk Hebron, NE

Answered by Jamie Hager on October 4, 2010

Is it okay to spray open-cell foam over a layer of closed-cell foam?

— Steven L'Heureux Richmond, VA

Answered by Danny Kelly on August 30, 2010

 
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