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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

We have an unheated crawlspace under our house that we would like to insulate.

— David Davison Middleburg, FL

Answered by Florian Speier on October 1, 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

We are concerned about possible offgassing from spray-foam insulation for a home under construction.

— Kara Palley Passaic, NJ

Answered by Rick Goyette on July 21, 2010

Would you recommend foam insulation for a tight attic space?

— Ronnie West Hempstead, NY

Answered by Danny Kelly - KMC Green Team on July 16, 2010

Is fiberglass insulation or blown in insulation the best?

— Susan Franklin, TN

Answered by Randy Potter on July 1, 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, LEED Green Associate on May 28, 2010

Is closed-cell foam -- sprayed in -- OK to use for an entire house in southeastern PA?

— Nelson Nafziger Parkesburg, PA

Answered by Sean Lintow Sr on May 25, 2010

 
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