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Thread: Can't afford solar? Paint it (your roof) white

  1. #1
    Elite Member Fluffy's Avatar
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    Lightbulb Can't afford solar? Paint it (your roof) white

    Can't Afford Solar? Paint It White


    Your roof, that is. A new study calculates that installing white roofs in the world's cities could offset 1.5 years of manmade carbon emissions, reports AAAS.

    Light-colored roofs cool the planet in two ways. They reflect radiation back into space. And they keep your house cooler so you use less air conditioning.

    Researchers from Lawrence Berkeley National Laboratory and the state of California estimated the global number of roofs and asphalt surfaces in cities and conservatively estimated they comprise 1 percent of Earth's surface. They then found that using light-colored concrete, or applying white glazes to buildings, could increase the reflectivity of urban surfaces by 10 percent, effectively negating 44 gigatons of CO2. In comparison, halting deforestation of tropical forests would eliminate about 7 gigatons of emissions.

    Total global annual emissions from fossil fuels are currently running at about 28 gigatons.

    The new snow: paint.

    Julia Whitty is
    Mother Jones' environmental correspondent, lecturer, and 2008 winner of the Kiriyama Prize and the John Burroughs Medal Award.

    The Blue Marble: Can't Afford Solar? Paint It White

  2. #2
    Elite Member McJag's Avatar
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    I'd like to see all of us up painting our roofs! Especially Soj.
    I didn't start out to collect diamonds, but somehow they just kept piling up.-Mae West

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    Elite Member Rica's Avatar
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    ^ He'll do it in the middle of the night in his boxers!

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    Elite Member lurkur's Avatar
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    Oooh, I wanna paint my roof white now!! heh

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    Elite Member louiswinthorpe111's Avatar
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    It'd get dirty awfully fast and look kinda crappy.

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    Elite Member lurkur's Avatar
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    Quote Originally Posted by louiswinthorpe111 View Post
    It'd get dirty awfully fast and look kinda crappy.
    I'll have to add "sweeping the roof" to my weekly chores

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    A*O
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    So using the same theory I assume we have to paint the roof black in the winter to keep the heat IN?
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  8. #8
    Elite Member Fluffy's Avatar
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    ^Well, a priest I know says that wearing black outside in the summer turns you into a solar panel.

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