Mike writes from Antioch, Illinois: "I am finishing my basement and need to insulate. The recommendation from the link on the website is r-11. The system you offer is only r7.5. 1) Can I instead use 1" FOAMULAR 150 and build a 2x4 wall in front of it and add r-11 unfaced? 2) How do I (within code IRC2003) 'mechanically attach' the foam? 3) The wall in question is a 'lookout' basement with preinstalled fiberglass with a metallic looking facing in a 2x6 cavity on the top half, and the poured concrete on the lower. Do I need to remove the facing on the upper half? 4) How do I transition from one to the other - they are not in alignment; there is a ledge."

Answer: Thanks for your questions but you have several for which there are no simple answers. Rather than engage in a lengthy exchange of e-mail messages, I suggest you call the Owens Corning Customer Service Department at 1-800-Get Pink™ (438-7465).