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

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

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