Ceramic tile shower floors have long been regarded as a sign of high-quality construction. Unfortunately, improper installation can turn this durable floor system into a problematic one. In this article, I’ll explain the methods I use to build a leak-free and long-lasting ceramic tile shower floor.

Shower floor systems are unique in that they must perform flawlessly under water. Since the curb at the shower door acts as a dam, the floor drain is the only safety valve preventing the shower floor from becoming a swimming pool. If the drain is blocked (by a dropped washcloth, for example), the shower floor ends up under water. To prevent a...

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