Just add water for mixing with Mapei® Keracolor® S Sanded Grout with Polymer! This premium-grade polymer-modified sanded Portland-cement tile grout is pre-blended for your easy use. Great for grouting interior or exterior residential and commercial floors and walls in dry or wet conditions. Available in 13 standard Mapei® colors.For interior or exterior floors and walls Mold and mildew resistant For grout joints widths 1/8" to 5/8" No sealer required 40 color options