Reflectix is written up in Ocean navigator mag, Nov/Dec 2010 (
www.oceannavigator.com) in an article on "Controlling condensation below decks. Says an air space is required for it to work as designed, and without an air space it gives R1.1 per layer. 2 layers with air space R6.0 (
www.reflectixinc.com). The author is in Seattle, so presumably could get the product there.