NOFP (Northwest Ohio Foam Products?) has a product I've used in my dairy milking parlor and tank room, and my brother used it in his 60 x 90 shop/garage. Comes in rolls. I've picked some up at the factory in Wauseon, but I don't know if you still can get it direct. We got a lot of supplies and knowledge from here, (or here). Of course, now even Menards carries a full line of supplies so it's pretty simple to do a DIY system. HTH
DAN