511 Porous Plus is a penetrating sealer designed for the protection of the most porous surfaces. 511 Porous Plus forms an invisible barrier that is resistant to moisture and stains while allowing vapor to escape. 511 Porous Plus is not a surface coating and will not alter the natural look. All surfaces are harder and less slippery. With Miracle Sealer Tray and Applicator can be used with all 511 products, and other sealers and enhancer brands. Unique foam pad that holds the sealer/enhancer within the pad. Evenly distributing the product over the surface and allows for a more controlled application. Unique designed to hold the sealer/enhancer in it. Pour the sealer/enhancer into the tray and run the Applicator through it to absorb the product. Raised ribs that aid in extracting the excess sealer preventing dripping and allowing for the most cost effective application of the product. Use with all natural stone and tile: marble, granite, limestone, travertine, slate, sandstone, cantera, concrete, terrazzo, saltillo, shell stone, bluestone, lapis, quarry, ceramic, porcelain, glazed, mosaic, glass, acrylic and more.