We typically refer to all porcelain tiles as "waterproof" because water will not have a significant impact on the top of the tile or on the body of the tile. Porcelain tiles can be installed indoors or outdoors. Due to the slightly different production process for ceramic tiles, we refer to all ceramics as water resistant. Even though ceramic tile will not be damaged by water, they might have some water absorption. For indoor installations, porcelain and ceramic tiles will be great for any normal wet environment, like a bathroom or shower wall. For outdoor installations, we recommend porcelain tile. If you have additional questions concerning possible installation locations for your tile project, please reach out to our Customer Care Center or a store associate and we would be happy to help. Please note that industry standards may require additional installation materials for interior or exterior installations of tile and we recommend consulting a PRO or Floor & Decor associate for more details.