What grout do you use on sandstone tile?

When grouting sandstone tile, it's best to use a sanded grout, as it provides better durability and is suitable for larger joints typically found in natural stone installations. For added protection against moisture and staining, consider using a polymer-modified grout. Always ensure the grout is compatible with the specific type and finish of your sandstone to prevent any damage. Sealing the grout after application can also enhance its longevity and performance.