Paint your roof and save the Earth!

September 10, 2008 at 8:25 pm 2 comments

This is an idea whose time has been here for a long time… I mean really my father was painting the roof of his mobile home to reflect the sun and reduce his heat load 20 years ago!  I can’t believe that we are just getting serious about this finally. I know that this has been one of the methods cited in California’s Title 24 energy code for years.

In any event it is back in the news  in the LA Time with a couple of posts from both Treehugger (

Excerpt: “In much the same way that more ice/snow reflects UV rays instead of absorbing the heat the way the oceans do (think: feedback loop that results from melting polar ice caps), cities are now giving white roofs a second look as a way to cool cities and fight climate change. The Los Angeles Times reports that the Climate Change Research Conference, held this week, advised that if buildings and road surfaces in 100 of the largest cities in the US were covered with lighter and heat-reflective surfaces the savings could be massive. Roofs account for 25% and pavement account for 35% of surface area in cities.

and from (  The gist of this story is that a study has stated that by a lorge number of roofs being converted to what would be considered a cool roof (often this is painting on a light colored elastomeric coating)  in 100  major cities we could offset the carbon emissions for the entire planet for a year.  That is a pretty bold claim and may even be over the top.  However I am sure that we could make a significant difference.  Let’s hope people take up the idea.

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Entry filed under: Design, Environment, Technology. Tags: , , .

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2 Comments Add your own

  • 1. Alexander Cua  |  September 11, 2008 at 7:06 am

    It is always nice to read about the benefits of cool roof systems. In 2005, I did a study on the effects of reflective roof coatings in reducing airconditioning load and the results were very dramatic.

  • 2. Nathan Pershner  |  February 24, 2010 at 4:24 am

    a great post which reveals the facts about the benefits of cool roof systems.It is very interesting for me to read that blog. Thanks for it. I like such topics and anything that is connected to them.


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