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  1. #1
    Member Freshman Undergraduate
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    What causes vinyl siding to become chalky

    Just curious does anyone know what causes vinyl siding to become chalky. Is it because too much SH was put on it? Just want to be sure that I dont cause a house to do this.
    Donnie Sloan
    Sloan Pressure Washing
    Brunswick, Ga
    dsloan2668@yahoo.com
    912-269-2385

  2. #2
    Moderator 11000 PLUS POSTER Christopher's Avatar
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    When the UV inhibitors break down, you get the chalky residue on the vinyl and painted surfaces. That is why every so often you need to repaint. Vinyl..... not much you can do but do restoration and that is costly, not many would want to do that. That has been talked about here a while back in some threads.

    Some people have painted vinyl but then you get to the same thing as if you had never bought the vinyl, you have to start painting again.

    Until you have a great solution and restoration method for the chalk on surfaces, it is usually more hassle than what the job is worth and when the job comes out uneven, you are responsible and could end up in court, easier to just walk away.

  3. #3
    JL Pressure Washing 3000 PLUS POSTER jlpressure's Avatar
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    Quote Originally Posted by Christopher View Post
    When the UV inhibitors break down, you get the chalky residue on the vinyl and painted surfaces. That is why every so often you need to repaint. Vinyl..... not much you can do but do restoration and that is costly, not many would want to do that. That has been talked about here a while back in some threads.

    Some people have painted vinyl but then you get to the same thing as if you had never bought the vinyl, you have to start painting again.

    Until you have a great solution and restoration method for the chalk on surfaces, it is usually more hassle than what the job is worth and when the job comes out uneven, you are responsible and could end up in court, easier to just walk away.
    Chris, here in the south we see chaulky, oxidized vinyl often. We do not remove it. but couldnt walkaway from these projects I would say 10 -15% of vinyl I see has some degree of chaulky/oxidation. This is common and you just have to be aware and not use direct pressure or you will leave the Mark of Zorro all over it

  4. #4
    banned Graduate Student RMedbery's Avatar
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    I dont clean houses except for my own. Its vinyl, and was chalky. I did the long distance downstream/rinse. All the dirt came off but the chalk was still there. I got up close and personal and PW the entire surface, chalk was gone but it did take all day.

  5. #5
    Member Senior Undergraduate Mike@Sunbritesupply's Avatar
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    Pre-inspect!

    When you quote, and see this, set your customers expectations! Just because you wash, doesn't always mean it will look better. Often when oxidation is present, after washing, it actually looks worse. That is why it is important to discuss these situations with your customer. Otherwise, like previously mentioned, you get the blame. You are NOT to blame, but it is much easier to be pro-active about this, than reactive. Let your customer know what is going on, and what kind of results they should expect when you are finished. Communication about oxidation saves lots of headaches later.

  6. #6
    Member Freshman Undergraduate
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    Has anyone come up with some type of wax, or solution to downstream on vinyl to fix this problem?
    Fredrick Winns
    Xclusive Lawn Care & Pressure Washing
    Georgetown SC
    843-340-7890

  7. #7
    Member Professor with Tenure Rapid HotClean's Avatar
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    You can spray wax it and it usually will look better. But it won't last.

  8. #8
    Moderator 11000 PLUS POSTER Christopher's Avatar
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    It is the UV inhibitors in the vinyl itself that are breaking down.

    I tried waxes years ago and they only looked shiny for 2-3 months at best.

  9. #9
    Member Freshman Undergraduate
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    just wondering because i went back to a home i did a few weeks ago, ran my fingers along the side of it and it was pretty chalky. Thought it was something i did wrong like to long of dwell time or didn't rinse good enough. Thanks guys
    Fredrick Winns
    Xclusive Lawn Care & Pressure Washing
    Georgetown SC
    843-340-7890

  10. #10
    Member Honorary Professor Kiloman's Avatar
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    Sun sun sun
    Hal Brown
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    336 736 0008
    Sophia Nc
    http:www.AbvPressureWashing.com

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