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Unread 10-23-2020, 05:13 PM   #14
Veteran DIYer- Schluterville Graduate

STAR Senior Contributor

Join Date: Jul 2004
Location: Nashua, NH
Posts: 14,213
First thing to understand is that 'sealer' is somewhat of a will not prevent a stain on a tile or stop it from absorbing will slow it down, giving you time to clean up a spill.

Personally, I'm not sure that finish of tile is a great choice for a kitchen backsplash, but it sounds like that's past.

Both sealers will penetrate. With any sealer, make sure to follow the instructions to the letter. Most require you to NOT let it dry on the surface of the tile. With most, if you do, it will produce a haze that is hard to remove. You need to buff it within the indicated timeframe to remove the excess from the surface. WIth a crackled finish, that may be more difficult.

On some tile, a sealer can change the overall look, so yes, you do need to test. Some manufacturers will send you a small sample rather than having to buy a larger amount, so maybe call those you think you're interested in to check. A tile shop might have some sample bottles. A good sealer is expensive.
Jim DeBruycker
Not a pro, multiple Schluter Workshops (Schluterville and 2013 and 2014 at Schluter Headquarters), Mapei Training 2014, Laticrete Workshop 2014, Custom Building Products Workshop 2015, and Longtime Forum Participant.
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