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Thread: Orange Mold in a Schluter Systems Kerdi Shower - Linear Trench Drain

  1. #1
    ACO Shower Drain Sales johnfrwhipple's Avatar
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    Default Orange Mold in a Schluter Systems Kerdi Shower - Linear Trench Drain

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    ACO Shower Drain Sales johnfrwhipple's Avatar
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    Default What causes "Orange Mold" in a shower?

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    jfrwhipple@gmail.com - www-no-curb.com - 604 506 6792

    Always get construction advice double checked by your local city hall. Flood Test Every Shower - Every Time.

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    Retired Defense Industry Engineer jadnashua's Avatar
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    There are a couple of molds that are orange and they'll form on any surface under the right conditions...I seriously doubt the material leaches color. Once they get established, it is tough to get rid of them.
    Jim DeBruycker
    Important note - I'm not a pro
    Retired Defense Industry Engineer; Schluter 2.5-day Workshop Completed 2013, 2014

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    ACO Shower Drain Sales johnfrwhipple's Avatar
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    Default Organic Soaps or Mold

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    jfrwhipple@gmail.com - www-no-curb.com - 604 506 6792

    Always get construction advice double checked by your local city hall. Flood Test Every Shower - Every Time.

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    Retired Defense Industry Engineer jadnashua's Avatar
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    At the school I went to on Shluter stuff, they had a cardboard box covered with Kerdi and thinset used as a drink cooler. The water never was anything but clear, and the color of the membrane had not changed over the months that box had been in use. they had to replace them periodically because of flex...the box became more of a bowl than a square box...not because it got wet, but because of the weight of the water and drinks it held over time and the constan flexing.
    Jim DeBruycker
    Important note - I'm not a pro
    Retired Defense Industry Engineer; Schluter 2.5-day Workshop Completed 2013, 2014

  6. #6
    DIYer, not in the trades LLigetfa's Avatar
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    I'm starting to see some orange spots on the grout on my KERDI shower but I think it is iron staining. I plan to hit it with some Super Iron Out soon. I need to get more aeration before the precip tank of my iron filter to combat the iron.

  7. #7
    Plumber jimbo's Avatar
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    I am familiar with a pink mold in showers. My initial take on orange is "is it rust??". But the one and only solution to mold is drainage and VENTILATION!

  8. #8
    DIY Senior Member Smooky's Avatar
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    Iron bacteria will usually cause yellow, orange, red, or brown stains. It can also produce a slime.

  9. #9
    ACO Shower Drain Sales johnfrwhipple's Avatar
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    Default Iron Content in Marble and Orange Mold.

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    jfrwhipple@gmail.com - www-no-curb.com - 604 506 6792

    Always get construction advice double checked by your local city hall. Flood Test Every Shower - Every Time.

  10. #10
    DIY Senior Member Smooky's Avatar
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    I found this on a site about counter tops.......One curious fact that sometimes results in rusty stains is that Carrera marble and other white marbles contain iron deposits. If these are consistently exposed to water long enough to oxidize the iron, then the rusty water is carried to the surface and can stain.

    This is much more common on floors, where a flood or leak could saturate the marble or trap water under the tiles providing enough moisture to oxidize the iron deposits within.

  11. #11
    ACO Shower Drain Sales johnfrwhipple's Avatar
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    Default

    post(s) removed by John Whipple
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    jfrwhipple@gmail.com - www-no-curb.com - 604 506 6792

    Always get construction advice double checked by your local city hall. Flood Test Every Shower - Every Time.

  12. #12
    Master Plumber Redwood's Avatar
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    It is a bacteria, Serratia marcescens often pink or, orange and a pain in the butt to get rid of.

    http://en.wikipedia.org/wiki/Serratia_marcescens

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    DIY Senior Member chefwong's Avatar
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    OT, but a chemical test ?
    I have cleaning fluids that when they react with Iron...the cleaning fluid turns purple.

  14. #14
    Homeowner geniescience's Avatar
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    urinating = makes this bacteria grow faster.

    I think. Have a study done to prove it. Or collect anecdotal evidence.


    Interesting about the iron test and purple.

  15. #15
    DIY Senior Member chefwong's Avatar
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    Actually the chemical is not a iron test.....per say, but when in use, when it hits iron, it reacts to it....and then turns from green to purple.

    I briefly skimmed the thread but I'm going to assume there exists some sort of iron test out there to confirm his suspicions, hopefully without causing more staining.

    I love Carrerra Marble in aot of things. I would never want it myself though. Too soft, too much maintenance, etc..

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