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radiant paint

Posted by Bill Stout on June 20th, 2000 04:06 PM
In reply to Save your money by Dodgeman on June 20th, 2000 12:31 PM [Go to top of thread]

7 of 7 people found this post helpful

Au contraire!! With the following caveats. 1.)The radiant paint is well worth the money providing that your roof receives direct sun. If it is in the shade, radiant reflection does no good since the sun never gets there. 2.) you don't already have a radiant barrier on you plywood decking (you can tell by looking at the underside of your roof-it will be aluminum foil. nearly all better grade houses in Texas are built with a roof decking that has aluminun foil applied to the decking). 3.) Depending on your current roof (if it is cedar shingles the gain will not be as great. If you talk to any thermo engineer about radient barriers, he can give you a short lesson in thermodynamics and prove the value. In answer to your question, Sherwin Williams handles the "Radiant" paint. They also make an interior radiant paint for your walls that receive direct sun. It's not as effective though and it must be the finish coat so they may not have it in the colors you want. And no, I have no affialation w/ Sherwin Williams. I'm an electrical eng. with extensive experience in radiant insulation (at the Manned Spacecraft Center). This product should be applied with an airless gun (with a long wand if available). Do not apply it heavy. A thin coat is all you need. If you decide to use it, measure the attic temp prior to application, then measure it after application. These measurements should be at the same time of day and with NO cloud cover. You will be amazed at the difference.

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