Wow, you're making great use of your space. Our basement is
full of DH's "stuff." Now that I'm thinking about it, if I could get him to clear part of it out... it'd be nice and cool down there... But dark, too.
Here's a link to Warm & Co's blurb about Insul-bright
http://www.warmcompany.com/ibpage.html. I bought mine from Joann's, by the yard, but the only pic I could find of it was in a pkg; at least you can kind of see what it looks like
http://www.hsn.com/insul-bright-whit...67553_xp.aspx. It's actually some kind of poly w/ "reflective metalized poly film" - guess that's why you have to use it w/ at least one layer of cotton batting.
Hope that helps, and that you get to spend some time in your space today!