Tiling a Shower Curb

The lack of tile seams on the curb is useful when installing a glass shower door. A tighter seam is created between the shower curb and the shower door which helps to prevent inadvertent shower door leaks. In addition, one large threshold stone piece also creates better anchor locations for shower door screws and hardware.

For the outside edge of the shower curb you can also use one large stone threshold piece.

Alternatively you can use large tiles for the shower curb, e.g. 12” long tiles, such that you have minimal seams.

Photo by Mark Donovan

This is a less expensive approach than the large stone threshold piece. In addition, large ceramic tiles are easier to cut compared to ripping a 36” length of marble threshold. The other benefit is that you can use the same tile pieces and spacing on the outside edge of the shower curb. This helps to create tile uniformity in terms of tile spacing and colors.
 

To tile a shower curb, simply mix up some thinset mortar to a pasty like consistency and then use a ¼” trowel to apply it to the shower curb. Then press your threshold stone or tile pieces into the mortar. Make tile cuts where necessary.