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Unread 05-02-2019, 11:06 AM   #1
Redfern
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Isopropyl alcohol stains on quarry tile

Was stupidly trying to remove acrylic paint from the decorative talavera tiles.Oh,it worked! But as you can see,it left terrible white stains on the surrounding quarry tile.(it may actually be Saltillo tile)
I was advised by a gentleman that works for Summitville tiles to use airplane grade paint stripper to remove the stains but I thought I'd ask her first before I do any more damage.Thanks for your help!
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Unread 05-02-2019, 05:33 PM   #2
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Are you sure it’s the alcohol that caused the stain? It looks like the paint got dissolved by the alcohol and then smeared paint residue on the tile finish. Before using any more solvents, test on an inconspicuous corner of the tiles. Those look to be glazed and usually can tolerate solvents well.
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Unread 05-02-2019, 09:56 PM   #3
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Jeff,it is definitely alcohol staining.The paint that was being removed from the decorative tile was black.There are also alcohol drips on the hearth tiles.I immediately flushed them with water but to no avail.
Do you believe solvents with Methylene Chloride would be safe on the terra cotta tiles?
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Unread 05-02-2019, 10:36 PM   #4
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Welcome to the forum, Gail!

Stay away from the methylene chloride for the moment.

I would try a little test. Wrap a fingertip with a paper towel. Get the tip very damp with denatured alcohol, then immediately brush in one direction at a tiny spot within the “stain”. Don’t rub back and forth, but quickly rub in one direction only. Make small 1/4” “strokes”.

Come on back and tell us if it made any improvement.

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Unread 05-03-2019, 04:09 PM   #5
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Will do! Thank you
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Unread 05-07-2019, 08:35 PM   #6
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Anything, yet?

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Unread 05-13-2019, 08:13 AM   #7
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I just tried the denatured alcohol this morning.Here is a photo of results. Top drip is the isopropryl.Right below is the denatured applied to an isopropyl stain.Name:  20190513_100604.jpg
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Unread 05-13-2019, 08:16 AM   #8
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Well it appears the photo was flipped.So drip on LEFT that is whiter is original isopropyl stain. This is the drips on thE hearth tile.Several months ago I had applied a product call TEC seal and finish which was recommended when we first installed the tile.This has been applied several times over the years.I am wondering if the denatured alcohol removed the isopropyl stain AND the TEC sealant and perhaps I should just use the denatured on the whole thing and re-seal.Thoughts?
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Unread 05-16-2019, 08:11 PM   #9
Tool Guy - Kg
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Okay, you had a topical sealer on there. That would have been helpful to know before (to avoid inadvertant stripping, as was done), but that's water under the bridge.

Not positive, but I think what happened was that trace amounts of moisture from the isopropyl alcohol got trapped within in the finish and caused the white cloudy look. Very similar to a cold, sweaty glass leaving a cloudy ring in the finish of an old dining room table.

Since what you did was succesful at stripping the topical finish, you may want to simply do as you said and strip the rest of it. You could stop at exactly one tile and then let it dry and apply your sealer again. Or you could do the whole thing. Most folks like to do as little work as possible, so....dealer's choice there.

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Unread 05-16-2019, 09:11 PM   #10
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I think that is what I will do.Say a quick prayer to the tile gods! And thank you for your advice!
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