Anyone familiar with a product called Prodex?  I only seem to see it at this web store:  http://www.insulation4less.com/Insu...#fragment5

They have some amazing (maybe too amazing) claims of the R value.  somehwere around 17 for a roof and 7 if on a wall application.  Not sure why the R value changes?  The product is only 5mm thick.

It looks similar to a product called reflectix.  But reflectix doesnt have such high R values.

Is this product another gimmick?  Or can we just use this instead of XPS or EPS or Polyscio????