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Unread 10-15-2016, 01:17 PM   #1
alwayshedge
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Brush marks on Marble

Hi All,

I have marble shower walls and have been noticing these white brush marks appear and I have no idea where they could be from. I used a ph balanced marble cleaner and they appeared. Could it be that I stripped the seal and thats why they appeared? Or is it that the marble was ruined somehow from the cleaner? Any help is appreciated. Thanks!
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Unread 10-15-2016, 02:31 PM   #2
evan1968
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Uh,those might be saw marks. That piece of marble might be installed upside down. Total wild guess.

Got a few pics from farther away. A wider shot maybe?
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Unread 10-15-2016, 03:07 PM   #3
Lazarus
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I agree...looks like saw marks on the unpolished back. "Pro Tip" Shiny side up!
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Unread 10-15-2016, 03:09 PM   #4
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Henry, how old is this shower? If it's fairly new and you have a few extra pieces of marble, check the backs to see if Craig and Laz are right.
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Unread 10-15-2016, 08:59 PM   #5
alwayshedge
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Thanks for the responses. I don't think its the tiles being installing wrong side because the marks go across the tiles as seen in the picture here. I can only think that I somehow damaged the marble cleaning it but still very strange since this is a PH balanced cleaner specifically designed for marble. Also, the marks disappear when the tile gets wet and return when dry. When I run my fingers over it, I don't feel anything...very smooth.
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Unread 10-15-2016, 10:09 PM   #6
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From my desk it looks like water has gotten behind the sealer and is showing up as white streaks. Seen that before.
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Unread 10-15-2016, 10:31 PM   #7
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Hmm that's what I was thinking. Any idea how to fix this? Hire a pro to strip the sealer I imagine?
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Unread 10-15-2016, 10:34 PM   #8
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Call tech support at Mapei. If you're lucky John K will answer the phone.

Have a few pictures ready to email, and a pencil and paper handy.
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Unread 10-15-2016, 10:35 PM   #9
alwayshedge
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Paul,
Just another tidbit. When I first noticed the marks appearing, they were dark marks almost black. Over time, they have turned white.
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Unread 10-15-2016, 11:15 PM   #10
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Yeah, call John.
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Unread 10-16-2016, 09:37 AM   #11
Tool Guy - Kg
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Hi, Henry.

When you sealed, did you apply the sealer and mistakenly allow it to dry on its own?

Or after allowing the wet sealer to dwell the prescribed period of time (5-ish minutes...look at your directions), did you polish the excess sealer 100% dry?

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Unread 10-16-2016, 12:52 PM   #12
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Hey.

Honestly not sure because I had it sealed by the same man that did the remodel job.
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Unread 10-16-2016, 05:20 PM   #13
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Do you have any surplus sealer in your possession?

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Unread 10-16-2016, 06:47 PM   #14
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hope you didn't use one of those green pads when you used your pH neutral marble cleaner. If so, a surface re-finish might be the only solution.

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Unread 10-16-2016, 11:03 PM   #15
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Hi Henry

How long ago was your stone installed? Is it polished or honed? If there were dark spots on the stone and now they are light after cleaning, more than likely your marble is etched and will need to be repolished.
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