Q. My customer wants to have her combination steam room–shower tiled with a nonglazed floor and wall tile she has already purchased. Is the tile suitable for this type of application? I would use Hardie’s Tile Backer for a substrate and the appropriate thinset mortar.

A. Michael Byrne, a JLC contributing editor, responds: Your question would be simple to answer if I could refer only to the tile, but given your uncertainty about such a basic issue, I wonder what your thinking is on the other important aspects of the installation? For instance, what do you consider an “appropriate” thinset? And how will you be...

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