Painting - Paint additives

I have been reading about a product called InsulAdd which claims to vastly increase the insulation values of your home. Do you know if there are other paint products that do this and how they work? Are there consumer or professional organizations (other than this unbiased site, of course) where I can get an unbiased assessment of these products? By the way. They (Insuladd) are very responsive. I sent them some questions and received the answers with a few minutes, less time than it took to register on this site and type this.

mbradish, The only insulation value a protective coating as thin as paint, even if it were 20 mils(4 times average dry paint), could have is from a sealing point of view or a reflective point of view. This is really not insulation. Good measures to take but not insulation. I used to insulate homes years ago and have some idea what R values different materials have. To give you an idea 6 inches of fiberglass is R-19, 3 1/2 inches R-11 and these are the minimums in the deep south for walls and ceilings. I can't be precise about the following numbers without checking but a one inch layer of styro sheathing has an R value of about 1-3, a layer of brick about 3-5, and a layer of wood siding about 1-2. Heres where it get unbelievable, a solid layer of earth 30 inches thick has an R value of about 5 and a 12 inch thick layer of concrete about the same. As you can see adding a 10-20 mil thick layer of anything will have little effect on the R-value of a home. The reason fiberglass has such a high rating per inch of thickness is the trapped air in it. Obviously a paint coating will have no trapped air. If this InsulAdd costs any more than good paint I wouldn't consider it for a minute. My guess, and thats all it is at this point, is that a coat of this stuff might add 1-2% of an R-1 value which is hardly worth adding given the ceiling values in the north are R-30 or more and walls around R-18-20. I will check into this but feel this stuff is a gimmick.....Mike