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Yes, you can install a backsplash directly onto drywall, provided the wall is properly prepped, clean, and dry. For best results, especially in kitchen areas, your walls should be made of moisture-resistant drywall, often called green board. If your current wall isn't moisture-resistant, it's recommended to replace it before installing the backsplash. For even greater protection against water damage, you can remove the existing drywall and install a tile backer board or cement board instead. While properly installed standard drywall is typically strong enough to support a backsplash, some local building codes may require water-resistant materials in kitchen areas, so it's a good idea to check.

When choosing tiles for a shower floor, avoid highly porous tile materials, like those with a water absorption rating over 7%. Don’t use non-vitreous tiles, or tiles fired at low temperatures, because they will absorb more water. If you use a highly porous tile in the shower, the tiles can wear down faster, meaning they’ll need to be replaced much sooner.

Glass tile is one of the easiest materials to maintain. It is both stain and water-resistant, making it easy to clean and incredibly durable. This also makes it resistant to mold and mildew. However, make sure it’s kept clean, otherwise, your grout might start to degrade. Glass is liable to scratch, so ensure you’re using non-abrasive materials and products, like soft sponges and wipes.

Generally speaking, it is better to cut tile wet when using a fast-moving wet saw to reduce dust and chipping. However, tile can be cut dry when using just about any cutting tool. Dry cutting will result in a bigger mess and may increase the risk of chipping or cracking, but if you’re just making small cuts, dry cutting is a safe and viable option. Cutting dry also means you can apply tile grout sooner, so it’s better for rushed projects.