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Unread 04-03-2020, 01:41 PM   #1
zeldafitz
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Dirt under new sealer

I just had my ceramic tile floor regrouted. After waiting 2 days I applied sealer. Now that it’s dry I notice dirt embedded under the sealer. I can’t get the tiles to look a uniform white again. Do I have to strip it and start all over? Will the stripper harm the new grout?
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Unread 04-04-2020, 12:52 AM   #2
Tool Guy - Kg
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Can we ask which grout and which sealer you used?

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Unread 04-04-2020, 02:20 PM   #3
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And also, what sort of tile?
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Unread 04-05-2020, 02:20 PM   #4
zeldafitz
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Sealer Woes

Hi, it was unsanded grout on white shiny ceramic tiles. The sealer used was from Lowe’s byTileLab ( squirt bottle)
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Unread 04-06-2020, 10:09 AM   #5
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Hi Zelda,

I can't find much on any of the Tile Lab Sealers. I'm particularly wondering whether it's something that builds up on the surface, in which case it would have to be stripped. Most of the sealers we use are deep penetrating sealers that don't do a lot to the surface, and in that case you should be able to scrub the surface and remove the dirt. To my knowledge, Tile Lab products are sold only in Home Depot and not in wholesale tile products outlets.

I do hope somebody who knows more than I do pops in here.

Is it possible for you to post a picture or two to this thead?
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Unread 04-07-2020, 05:39 PM   #6
Tool Guy - Kg
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TileLab Sealer isn't very potent. There is a relatively low percentage of solids in TileLab Sealer compared to many other sealers. Between this, and the fact that it’s a penetrating sealer as John describes, I can’t see it trapping dirt to the surface. Have you tried hitting the grout with a high alkaline cleaner, allows wing it to dwell for 5 minutes, then agitating the grout with a fine nylon bristle brush, and vacuumed the dirty liquid away? If doing this makes an improvement, repeat until the grout is clean. Then finish by rinsing/brushing with water and wet vacuuming to neutralize the pH.

This process will wear/degrade the sealer. So if you want sealed grout joints, you can do that again after the grout is completely dried.

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Unread 04-08-2020, 10:40 AM   #7
zeldafitz
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Thanks guys, it’s not looking so bad now a few days later.
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