Check your local insulation and hvac wholesalers....NB Handy in my area carries the linacoustic. It's the same stuff as Insulshield or ductliner. I don't suggest buying online as shipping costs will be a killer. The rolls are bulky and weigh 50lbs or more.
For the batting, call up your local upholstery shops. I found the chains like Joanns and Walmart didn't carry 1" thick stuff. Most of the re-upholsters have it and will gladly sell it to you when you have cash in hand.
Without a doubt avoid buying it on the net you will pay 3 times or more than what you would at an HVAC supply store. Most HVAC stores will say they only sell to contractors, but just go in there and act dumb and dress like a construction worker and usually they will sell to you,,,, LOL.
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