Netters, I went over to the insulation company today and had him cut me off a 2" 'slice' from the 41"x96" block. I found out it is Polyisocyanurate Foam under the brand name of "NilFram", which is in the urethane family. From what I have read up on this on the internet, "Polyiso" is the next generation polyurethane and the major difference is Polyiso has better flame retardant characteristics. It's 2.2 pound density, which adds a little weight, but I can get it whenever I need it, in whatever size, less expensive, and without shipping. Here is the brochure on it that he gave me:
http://www.geocities.com/djramccoop1/NilFram_Brochure.pdf Also, it sands and shapes identical to the polyurethane I got from Wicks. I welcome any feedback on this. Dean Cooper Jacksonville, FL Email me at dean_coo...@bellsouth.net See my KR project at www.geocities.com/djramccoop1/KR2_Home.html