Yes, it’s possible to cut tile without a wet saw; instead, you can use an angle grinder, a glass cutter, a snap cutter, tile nippers, or a rotary tool with a tile-cutting blade. A manual tile cutter or snap cutter works well for the larger tiles that wet saws are typically used for, while smaller projects might just require nippers or a glass cutting wheel. If you’re working with large quantities of tile, however, power tools are best.

You can, in theory, tile your fireplace hearth with most tiles. However just because you can, doesn’t mean you should. For example, it’s much better to use unglazed tiles because glazed tiles are more resistant to cracking under extreme heat. Porcelain is more heat-resistant than ceramic, but you can still design the hearth as you like by putting the most heat-resistant tiles directly under the fire and, if it matches your style, add more decorative tiles further from the center of the fire. 

If you’re looking for a durable tile for a shower floor, consider porcelain, stone, or vinyl tiles. Each of these options, when installed correctly, will stand up well to everything from water and moisture to the impact from a dropped bottle of body wash. These materials are also easy to clean and maintain, making them popular options for shower floors.

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.