R-value of high density urethane?
Anybody know the approximate r-value/inch for high density urethane (HDU) board? This is the stuff used for sign board or other carving. I've found it in densities between 10-30lb/cf., in blocks, sheets, etc. It can be readily machined, glued and is waterproof. I used to use it for product design prototyping years ago. I don't think it is typically used for insulation which may explain why I can't find any r-data on it. I was thinking it might serve well for door cores or rigid thermal break applications.
Thanks in advance.
Posted Feb 8, 2013 4:39 PM ET
Edited Feb 8, 2013 4:48 PM ET
Other Questions in Green products and materials