LTP Mattstone H20 1ltr is a low-odour, water-based impregnating sealer specially formulated to aid in the protection of all types of natural and artificial stone, quarry brick, paving, and honed, rough-cut and polished surfaces. This impregnating stone sealer delicately enhances the colour of stone, helps to protect against staining, and strongly repels water, oil and grease while still allowing the surface to breathe.