Not all tile showers are created equal. The difference between a tile shower that looks stunning for decades and one that starts failing within a few years comes down to a handful of critical qualities: material selection, substrate preparation, waterproofing, and installation technique. Understanding these qualities helps you evaluate contractors, compare quotes, and ultimately get a shower that performs as well as it looks.
Material selection is the foundation of a quality tile shower. Porcelain tile is the industry standard for shower walls and floors because it is dense, has extremely low water absorption, and is available in virtually unlimited colors, patterns, and sizes. Natural stone like marble and travertine is beautiful but requires sealing and more maintenance. Ceramic tile is budget-friendly but is more porous than porcelain and may not be the best choice for a primary shower that sees daily use.
Substrate preparation is where many budget contractors cut corners. The surface behind the tile — the substrate — must be perfectly flat, structurally sound, and waterproof. Cement backer board is the minimum standard, but modern waterproofing systems like Schluter-KERDI or RedGard-coated substrates provide superior moisture protection. In Houston's humid climate, inadequate waterproofing behind shower tile is the number one cause of mold, structural damage, and premature failure.
Installation technique matters enormously. Proper thin-set application, consistent grout joints, level tile placement, and correct curing times are all essential. A professional installer will use a notched trowel to achieve full mortar coverage behind every tile — a technique called back-buttering — to eliminate voids where moisture can collect. They will also use the appropriate grout type: sanded grout for joints wider than 1/8 inch, unsanded for narrower joints, and epoxy grout for areas that need maximum water resistance.
Edge finishing separates amateur work from professional results. Metal trim profiles, like Schluter-Jolly or Schluter-Rondec, create clean, finished edges where tile meets drywall or other surfaces. Bullnose tile is another option for a more traditional look. What you should never see is a raw, cut tile edge exposed — that is a telltale sign of a subpar installation.
When evaluating a contractor for your shower remodel, ask specifically about these qualities. What substrate do they use? How do they waterproof the shower? What type of mortar and grout do they specify? How do they finish the edges? The answers will tell you a lot about whether you are getting a professional installation or a quick, cheap job that will cost you more in the long run. See examples of our tile work in our shower remodel gallery.
