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Unread 04-10-2019, 10:09 AM   #1
shawninvancouver
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Can this be cleaned??

Not sure what this is? mould? stains? etc.. the tile is porous.. it was sealed.. there are no leaks...
its very strange, only on one wall of the shower... tile under the shower head that gets most of the water is fine.. its around 8 -9 years old..

i have tried to dry it out and re seal it.. they keep coming back when wet..
what can i do??
bleach? any ideas??
thanks
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Unread 04-10-2019, 12:24 PM   #2
shawninvancouver
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any help here???
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Unread 04-10-2019, 01:28 PM   #3
claycarson
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Shawn,

Manmade tile or natural stone?

Try 50/50 bleach and water spayed on so it has 10-15 minutes of soaking time.

If that reduces the marks dramatically, then it was mold stains. Pretty common in this setting.

Post afterwards so we can follow up.

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Unread 04-10-2019, 01:29 PM   #4
claycarson
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By the way, bleach won't hurt stone or grout, we use it all the time

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Unread 04-11-2019, 07:56 AM   #5
shawninvancouver
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Yes, natural stone and porous... but can bleach still get in to clean it if the tile was sealed??
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Unread 04-11-2019, 02:46 PM   #6
shawninvancouver
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Yessss.. natural stone and soaks water in it.. its not ceramic.. but im sure it was sealed when originally done.... willl the bleach get in there to whiten it??
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Unread 04-11-2019, 06:36 PM   #7
claycarson
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Shawn,

Not sure, worth a try. If it misses some spots, then you'll know.

The most common type of sealer, penetrating sealer Is not a thick topical film, it's absorbed inside the stone. It allows vapor transmission so it may allow bleach to get the mold stains.

Won't cost a lot of time or energy, so no reason not to try .

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Unread 04-12-2019, 02:03 PM   #8
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I would test different chemicals, one tile at a time.
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