Heavy soiling: 8 fl ounces to 1 gallon of water Stronger solutions can be used for extreme soiling conditions
Repeat the process until the sealer stays on the surface for more than 15 minutes
and efflorescence that can mar newly laid surfaces
and grout surfaces
thus preventing the natural stone from "drying out"
D/2 Biological Solution Gallon Heavy soiling: 8 fl ouncesD 2 Biological Solution is specially formulated to remove environmental pollution, dirt, and staining from biological soils such as mold, mildew, lichen, and algae from indoor and outdoor surfaces. D 2 is a Biodegradable cleaner that is pH neutral and contains no salts, bleach, or acids. It is highly effective for removing stains caused by biological growth on surfaces including marble, granite, limestone, masonry, concrete, wood, canvas, and vinyl &