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Old 06-23-2018, 11:52 AM   #1
Skoolie
 
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White Roof Keep Bus Cooler?

Hi,
Is anyone painting their roof white to actually keep the skoolie cooler? I heard some just paint it white with regular paint, and some are using a specific white paint designed to reflect the sun's rays. Does white paint actually keep it cooler? I can only compare it to a hot car... Car still gets hot in the sun whatever color it is.
Thanks!
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Old 06-23-2018, 12:19 PM   #2
Bus Crazy
 
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White car won't get near as hot as a black one, even though they both get hot. Yes a white roof will cool and reflect more heat than a black roof will. Additives will help more, though whether they are cost effective remains to be seen. I don't know that anyone paints their roof white for any other reason. Henry's makes their roof paint in different colors. Mine will be tan to avoid the huge elephant in the room white roof.
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Old 06-23-2018, 12:22 PM   #3
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Quote:
Originally Posted by Trail Fairy View Post
Hi,
Is anyone painting their roof white to actually keep the skoolie cooler? I heard some just paint it white with regular paint, and some are using a specific white paint designed to reflect the sun's rays. Does white paint actually keep it cooler? I can only compare it to a hot car... Car still gets hot in the sun whatever color it is.
Thanks!
White will reflect the most heat away.
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Old 06-23-2018, 07:34 PM   #4
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Solar Reflectivity (R) & Solar Reflectance Index (SRI) by Color – Dean Steel Buildings, Inc.
White not surprisingly is very solar-reflective, but surprisingly so is almond. Curiously, aluminum zinc has good solar reflectivity, but not so good SRI. When I was repainting my roof, when it was bare aluminum it was the hottest, a lot less hot with dull white primer, and least hot with shiny gloss white. I also used the magic pixie dust in the paint, but the jury's out on how much difference it makes.

John
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