What is the R-value for walls and ceiling in Laredo, TX?

— Felix Laredo, TX

Answered by Cynthia Phakos on December 9, 2010

Do you recommend bio-based soy foam insulation?

— Amy Alexandria, VA

Answered by Andy Ault, CLC on November 1, 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