The difference between floor and wall tiles is that floor tiles generally have higher strength and porosity ratings than wall tiles. Wall tiles are typically weaker and more likely to crack or become damaged under sustained pressure like high foot traffic. 

For this reason, avoid using wall tiles on floors and vice versa.

The rule tells you how to cut tile to install it in a corner. The 3/4/5 rule recommends that you should have 3 feet across on one straight line, four feet on the other perpendicular line, and 5 feet of length from the end of one of the lines to the other. You’re making a right triangle with the tile, and the hypotenuse (the line across from where the 3-foot lie and 4-foot line meet) should be 5 feet long.

Glass, ceramic, porcelain, and natural stone are all excellent choices for tiling a shower floor. Some glazed finishes can be slippery when wet. Your tiling contractor can provide more information on which tiles will work best for your shower floor.

Yes, you can tile over existing tiles in a bathroom, but it is not always recommended. For this method to be successful, the original tile surface must be clean, flat, and free of damage such as cracks, unevenness, mold, or mildew. While tiling over existing tiles can save time and money, there are potential drawbacks. The new adhesive may not bond properly, and the process adds extra weight to the wall or floor. Additionally, the increased height of the surface could interfere with door clearances. For the best and most durable results, removing the old tiles before installing new ones is generally the better option.