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which would be the best insulation forthe walls in my new house---r21 fiberglass batt, blown in cellulous or blow in fiberglass. i understand r21 fiberglass has highest r rating but will alow air to get around it more then blow in. thanks, bobby

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From: lenmac63@msn.com

can i use cellulose in mthe walls of my 85 year old home. i understand that it can be blown into the wall cavities.

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