Reflectix is not R-5. Below is a chart from Capt'n Pauley's site I linked to above. That shows it at 2.38/inch. It is about 3/8' thick so R value is .89 for 1 layer. Note that several of the foam types listed are R-5 or better. I like the Reflectix/1/2" closed cell foam/Reflectix method and will use it in my V berth area. The foam I use is Ethafoam, a flexible closed cell foam that is easy to cut and glue in place.
Living aboard in Victoria Harbour
Last edited by mitiempo; 01-09-2011 at 10:31 PM.