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IronSlanginRed t1_j9s7tan wrote

Reply to comment by Opposing_Thumbs in Tile installed on concrete by foxrue

In most cases I wouldn't suggest this. But that would level out the threshold, and if it's straight on concrete it shouldn't deflect any or crack much. It's actually a decent use case. Basically using the old tile as an extension substrate.

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juicius t1_j9u05kr wrote

Self-leveling underlayment?

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leviathan65 t1_j9udf38 wrote

You could, but kinda an unnecessary step since you have to put down adhesive of mastic or thin set. These look even enough that the trowel will level the adhesive for a good bond. Depending on size. Big ass tiles are a pain in the ass.

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