No, traditional tile types such as natural stone, ceramic, and porcelain tile should not be installed without grout. The addition of grout keeps dirt and debris from accumulating underneath the tiles and causing movement or expansion. Grout also keeps moisture from penetrating under the tiles' surface, which can shorten the lifespan of the product and installation. Grout is available in several varieties, including
stain-resistant,
mold- and mildew-resistant, and
no sealant required. The Home Depot's professional installers can assist you in selecting the type of grout that best fits your space.