Slate is a fine-grained, foliated, and uniform metamorphic rock widely used in construction and design. It is often crafted into roofing slates (or shingles) and is commonly employed for interior and exterior flooring or wall cladding. Slate tiles are typically installed using mortar and grouted along the edges. To improve durability, enhance appearance, resist stains, minimize efflorescence, and adjust surface smoothness, sealants are frequently applied.
