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  1. #1
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    Hard water spot removal after ceramic coating

    Long time lurker, and Autogeek customer, but first post. Asking for some advice....

    Anyway, I ceramic coated my 2 black Vettes last fall myself using Wolfgang Uber Ceramic Coating. They looked amazing, and I was pretty proud of my accomplishment. Then we moved this spring, and during that time, both of them sat out in the weather and rain for a couple of months. I took them both through a touchless car wash a couple of times during that time. Then once I got all the boxes moved out of the garage, so the Vettes could go in at the new house, we washed them by hand and to get them back to normal cleanliness level. After that washing, we noticed what looks like iridescent hard water spots all over the hood and rear decks. Not sure if it is residue from some all-in-one wax/sealer from the touch-less car wash, or iron from when they sat out in the rain a few times. I have noticed iron stains on my driveway already from the gutter runoff, so maybe that's a possibility? Tried cleaning the spots off with vinegar - no help. Tried Clay bar, and it lightened them a little, but took a lot of pressure, and did not completely remove them. I know I could pull out the DA and polish it all out. But just wondering if any of you have seen this before, and if there is a simpler solution. Any recommendations you have would be greatly appreciated.

    Here's some pics of the spots.
    Hard water spot removal after ceramic coating-20181021_141142a-jpg
    Hard water spot removal after ceramic coating-20181021_141153a-jpg
    Hard water spot removal after ceramic coating-20181021_141203a-jpg
    Last edited by long_tall_texan; 10-31-2018 at 05:18 PM. Reason: add pics

  2. #2
    Senior Member Rsurfer's Avatar
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    Re: Hard water spot removal after ceramic coating

    Car Pro Spotless was made to remove water spots on ceramic coatings, without removing the CQuartz coating. Will it work over Wolfgang's coating, dunno, but worth the try instead of polishing and having to reapply the Wolfgang coating. ,

  3. #3
    Senior Member BSoares's Avatar
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    Re: Hard water spot removal after ceramic coating

    If Spotless fails maybe try CarPro Essence Plus?
    Bruno Soares


  4. #4
    Senior Member Rsurfer's Avatar
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    Re: Hard water spot removal after ceramic coating

    Quote Originally Posted by BSoares View Post
    If Spotless fails maybe try CarPro Essence Plus?
    Good choice!

  5. #5
    Senior Member Cruzscarwash's Avatar
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    Re: Hard water spot removal after ceramic coating

    It will also help fill in all the swirls in the paint as well to give the paint more clarity
    Quote Originally Posted by Rsurfer View Post
    Good choice!
    Sent from my Pixel 2 XL using Tapatalk

  6. #6
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    Re: Hard water spot removal after ceramic coating

    Gtechniq water spot remover

    Sent from my SM-N950U using Tapatalk

  7. #7
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    Re: Hard water spot removal after ceramic coating

    Try Maguires wheel brightner diluted two to one, spray on a section wait 30 seconds wipe off with a plush microfiber towel. Then wipe with a wet microfiber to Neutralize.

  8. #8
    Senior Member Rsurfer's Avatar
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    Re: Hard water spot removal after ceramic coating

    Quote Originally Posted by Dano shine View Post
    Try Maguires wheel brightner diluted two to one, spray on a section wait 30 seconds wipe off with a plush microfiber towel. Then wipe with a wet microfiber to Neutralize.
    Will it remove the coating? Or will it degrade the ceramic coating? I know WB will remove waxes/sealants.

  9. #9
    Senior Member FUNX650's Avatar
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    Re: Hard water spot removal after ceramic coating

    Quote Originally Posted by Dano shine View Post
    Try Maguires wheel brightner diluted two to one,
    spray on a section wait 30 seconds wipe off with
    a plush microfiber towel.

    Then wipe with a wet microfiber to Neutralize.
    You’re saying a wet microfiber (towel)
    will neutralize Ammonium Bi-Fluoride?

    {Makes me curious as to what (neutralizing)
    liquid was used to make the MF-towel wet...}


    Bob
    "Be wary of the man who urges an action in which he himself incurs no risk."
    ~Joaquin de Setanti

  10. #10
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    Re: Hard water spot removal after ceramic coating

    Quote Originally Posted by FUNX650 View Post
    You’re saying a wet microfiber (towel)
    will neutralize Ammonium Bi-Fluoride?

    {Makes me curious as to what (neutralizing)
    liquid was used to make the MF-towel wet...}


    Bob
    Good point Bob. Sorry for not Clarifying I use DI water. Also Dilute it down to 4 to 1 or even 5 to 1
    It is safe for clear coat just don’t get it on any of the glass!!

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