What Is Needed to Seal Natural Stone Tiles?
Natural stone tiles (marble, slate, granite and others) tend to look solid and impenetrable. They’re not. If you buy unsealed stone tiles, which is generally how they’re sold, the material will absorb moisture and stains far more readily than glazed ceramic, porcelain or other manufactured tiles. Sealing your natural stone tiles during and after installation is crucial to prevent discoloration and other problems. This is a little more complicated than it sounds because it has to be done in conjunction with the grouting process.
