It’s True

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These type paints have been around for some time and the insulating claims about them are largely true.

They contain additives first developed for NASA that will produce about an R-4 insulating value.

http://www.nasa.gov/topics/nasalife/green_paint.html

Because of the cost, however, it will take so long to pay off the paint in terms of energy dollars saved that it really isn’t worth it.

You can save more by taking smaller measurers like caulking and sealing air leaks to reduce energy costs.