Mountain Slate’s overall mushroom-gray coloring with brown-gray veining is an attractive tile suitable for a wide range of home interiors. Equally stunning in kitchens and utility rooms as hallways or bathrooms, this classic slate design – with non-staining, shell-colored InteGrout™ – has a truly timeless feel.   Warmer underfoot than natural slate flooring, Mountain Slate is equipped with K-Core® technology and interlocking grouted edges for a quick floating installation over most existing hard floors.