Are structural insulated panels (SIPs) the right choice for building a healthy home?
— Allen Stone, Memphis, TN
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Answers By Dietmar Lorenz
Can I safely re-use old cotton batting for attic insulation?
— Paul Richard, Vancouver, BC, Canada
I need to add insulation beneath my wooden floor. What materials or systems do you recommend?
— Eric Goldfarb, Belmont, CA
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