"no greater R value than commonly used insulations of less weight"
Are we talking about the same product? I copied and pasted the following info in bold type from the Backwoods Daydreamer website.
"Insultex is an extremely thin, microperforated closed cell foam weighing 0.42oz/yd2".
From what I can gather it is being used as some sort of an exterior VBL.
"The key to getting the most "bang for your buck" with IX is having a good, yet loose, fit. If you press up against it, the insulative value is reduced. The same happens if it is too loose and allows too much airflow. You want it close, but not touching - having a climashield buffer is the perfect solution".
I gathered this from a comment on the BD site where the poster mentioned the possibility of using HDPE as an inexpensive substitute.
Has anyone here used this material in this way? Has anyone here made a top quilt using the exterior shell material as a VBL? Tim's cuben quilts come to mind but they are cuben inside and out.