Available in a range of shades, these stains create a variegated appearance on concrete substrates. Each slab turns out differently; the end result depends on application method, age of the substrate, aggregates, water content, curing method, and other variables. The long-lasting product is easy to apply and maintain, and it works on both interior and exterior surfaces. Concrete Coatings. 800-443-2871. www.concretecoatingsinc.com