Staining under office mats

Discussion in 'the CleAn Room' started by Matt Wood, Apr 27, 2017.

By Matt Wood on Apr 27, 2017 at 5:20 PM
  1. Matt Wood
    Matt Wood

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    The foundation has no vapor barrier underneath, making it wet. I doubt this is off gassing. So is it browning or mildew?

    How would you fix this? IMG_0498.JPG

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Discussion in 'the CleAn Room' started by Matt Wood, Apr 27, 2017.

    1. Jim Williams
      Jim Williams

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      Is it possible that was the original color of the carpet and was protected by the mats for years? That's sort of what it looks like. The only yellowing or browning I've ever seen was from rugs with latex backing.
    2. Matt Wood
      Matt Wood

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      No, the original color is the grey. This problem has happened with this company twice in two different locations with the same type of foundation. On the other location, they put the mats down very shortly after I cleaned it, trapping the moisture causing it to mildew.

      But on this specific location, I haven't cleaned it in 3-4 years, but they've had water literally shooting through the vct tile in the back storage room. This foundation is soaking wet due to it not having the barriers installed.
    3. Matt Wood
      Matt Wood

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      I don't smell mildew in this room, which makes me think it's browning.

      Does anyone have a plan that I can do?
    4. hogjowl
      hogjowl

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      I'd spray it down with coffee stain remover and then acid rinse.

      The reason why that's what I'd do is because it sounds like something Pemberton would do.

      He's my hero.
    5. Matt Wood
      Matt Wood

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      Any other reasons why you'd use the coffee stain remover?
    6. Old Coastie
      Old Coastie

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      If that was my office, the coffee stain would be all around the desk. Like somebody read these threads and spewed, or something.

      Then crawled around trying to suck up his hard-earned, carefully hoarded java...
    7. Matt Wood
      Matt Wood

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      Since I wasn't smelling mildew, I'm assuming it's just browning from the hard water in the foundation. So I was planning to spray my acid rinse 4:1 on the brown areas, let dwell, then extract like normal, and post spray with a peroxide usr. But Marty threw in that coffee stain remover and confused me.

      He's good at that. Just throw in another suggestion without explanation. That's Marty for ya
    8. Cleanworks
      Cleanworks

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      Coffee stain remover such glacial acetic acid coffee stain remover, which is essentially the same as browning treatment. I wouldn't rinse with anything, I would buff with a neutral pH carpet rinse using absorbent pads or bonnets.
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    9. Matt Wood
      Matt Wood

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      What about some of you encap cimexers? I've got some grey pads and a few bonnets. Any suggestions?
    10. Matt Wood
      Matt Wood

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      What's the difference between that and my acid rinse almost full strength? I don't have any coffee stain remover. I'll order some tonight if I need to
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    11. Cleanworks
      Cleanworks

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      Browning treatment or acidic coffee stain removers don't have any detergent in them. They are just acid with a mild reducing agent. You could try buffing with an acid rinse but I don't think it will be as effective. I usually spray those areas, let dwell then buff with a little neutral cleaner. The agitation helps to remove the staining without over wetting.
      Old Coastie likes this.
    12. hogjowl
      hogjowl

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      You don't have room in that trailer?
    13. Nate The Great
      Nate The Great

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      How come no distilled water first? :stir:

      I've had a residential customer with the same problem.. Hers was from the concrete slab.. You could smell the mildew after lifting up the chair pad..

      I had another customer who put a chair pad over a Nain rug and the floor didn't have a moisture barrier under the bamboo flooring.. The wool fibers literally fell out of it when I rubbed my hand over it while pre-inspecting it.. Big hole showing the foundation.. :dejection:
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    14. GeneMiller
      GeneMiller

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      i see that kind of problem pretty frequently here because of the rain fall . Moisture wicks through the slab and is trapped by the plastic. You can walk around the desks and see it through the plastic. i tend to see a lot of red colored mold. After a heavy rain you can see the moisture on the pad. When dry it won't produce any odor. i clean it with a peroxide based cleaner and on commercial it works very well. After cleaning i spray a heavy dose of peroxide and Ds2 and after the job is through just vacuum the excess. In homes on nylon its hit or miss. Wool it completely destroys.
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    15. ShortyDownUnder
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      Did you lift the carpet to determine if the backing was cellulose??

      If it is, it is a good chance it is cellulosic browning, removed with Browning Remover, NOT Browning Treatment.

      Browning Treatment will help prevent cellulosic browning.

      Browning Remover, has a higher % of H2O2 (or maybe over there, Acetic Acid), and is effective at removing the problem.

      The plastic mats exacerbate the problem.

      Plastic will retain moisture UNDER the mat, keeping the carpet damp & allowing mould spores to form.

      Even in cases where the carpet may be dry, in times of very high humidity due to extended rainfall, it is not uncommon for moisture to gather under the plastic & start the problem.

      Many times the air con; will fix this, BUT on weekends when the a/c is not on, is when the problem can start.

      This is what I've found living in the tropics, don't know where you are, so cannot qualify my findings for you.

      :yoda:
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    16. Larry Cobb
      Larry Cobb

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      Last edited: Apr 28, 2017
    17. hogjowl
      hogjowl

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      Alabama is the tropics

      It's hell
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    18. Old Coastie
      Old Coastie

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      Man do you simply not understand the concept of baiting 'em in and picking their pockets once they pass out?
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    19. encapman
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