If you use slate outdoors, as on this backyard bench, don't seal the tiles, as the sealer will deteriorate in intense sunshine. ROSIE ON THE HOUSE Rosie Romero Special To The Arizona Daily Star ...

Use a dry sponge when grouting slate; a wet sponge may discolor and dilute the grout. To clean your new slate floor, use a synthetic sealer instead of wax for the best stain resistance and long ...

For instance, how often should you be sealing your natural stone tile floors? If you don't do it often enough and properly, the tiles become vulnerable to wear and tear, stains, and water damage.

Homeowners looking to install natural stone tiles should keep in mind that they're highly porous, which is why sealing them once during the installation process is hardly enough.