Product Description Miracle Sealants 511 Impregnator is a penetrating sealer designed for the protection of all medium to dense porous surfaces. Forms a transparent layer strong enough to combat moisture and stains while allowing vapor release. 511 Impregnator does not alter the natural look of the surface following application. Provides water, stain and slip protection for interior and exterior tile and natural stone surfaces. Surfaces treated become harder and less slippery. From the Manufacturer 511 Impregnator is the original penetrating sealer designed for the protection of all medium to dense porous surfaces. 511 Impregnator forms an invisible barrier that is resistant to moisture and stains while allowing vapor to escape. 511 Impregnator is not a surface coating and will not alter the natural look. All surfaces treated are harder and less slippery.