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Unread 06-10-2021, 10:01 AM   #1
Krtka
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Gee WHIZ...dull spots on porcelain tile floor

I have 18" glazed porcelain tile flooring installed 10 years ago (new build). The tiles have a slight sheen compared to the reserve tiles that we purchased at the time of installation in case of need for replacement, so I presume the floor tiles have a sealant applied. A geriatric pet had an "accident" one night and though the pee was cleaned up the next morning we are left with a large dulled spot on the tiles. I tried vinegar, having read about a similar situation on this forum, but no change. Is it likely that the urine has affected the sealant? Will the floor need resealed, and if so, will the old sealant need to be removed? I attach a few photos but it's hard to get the right light/angle in a picture. Thanks in advance.
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Unread 06-10-2021, 01:00 PM   #2
cx
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Welcome, Eileen.

I believe you're talking about a sealer rather than a sealant (yeah, there's a difference) and our knowledgeable folks will want to know just what sealer was used. Sounds like you might not really know.

Most penetrating sealers for use with ceramic and stone tiles and grout do not change the appearance of the surface at all, which makes me wonder even more what might on your tiles.

Gonna be tough to evaluate the damage or make recommendations for repair without that information, but let's see if someone else has better ideas than mine.

My opinion; worth price charged.
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Unread 06-10-2021, 09:52 PM   #3
Tool Guy - Kg
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Welcome to the forum, Eileen.

Pee is acidic. Vinegar is acidic. Acids do not clean. They eat....or etch.

If the pee really did etch the actual porcelain, then it has been physically damaged on a microscopic level and that’s not restorable. But for a couple reasons, don’t lose hope. Try a little test on an area off to the side of the pee damage. Use a high alkaline cleaner in a small spot by applying the cleaner, allowing it to dwell for 5 minutes, then scrub a small 1” circle by polishing it with a rag-covered finger. Then polish that dry and compare the sheen level of your clean spot to the damage. I’m hoping that you’ve cleaned away the topical coating of whatever is on there and the sheen level matches that of the accident spot.

Do you have any cleaner that has something like ‘heavy duty tile & grout cleaner’ at your disposal?

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Unread 06-11-2021, 04:55 AM   #4
Krtka
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Thanks for the welcome and the replies, CX and Tool-Guy KG!
We'll try asking our builder if he can dig up any info about the (presumed) sealer on the tile.
No ‘heavy duty tile & grout cleaner’ in my possession, but I can get some. Any recommendations?
We've been pretty faithfully using Bona Stone and Tile Cleaner. Could this be buildup rather than sealer and the pee just removed it? There are other, smaller spots on the floor where the finish has been altered by a spill or drips, like beneath the door of the washing machine and the refrigerator.
Appreciate your help!
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Unread Yesterday, 07:25 AM   #5
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Eileen,

If you are anywhere near a Floor & Decor, they offer the cleaner Tool Guy is referencing.

https://www.flooranddecor.com/tile-s...100650670.html

What he is suggesting is a good test to see if they coated the tile with something, as sealers and floor finishes will be stripped away with his cleaning procedure and the cleaner above. It's definitely worth a shot to see if you have some sort of coating on the tile.
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