Keracolor-S is a premium-grade, pre-blended, polymer-modified sanded Portland cement tile grout. It requires only the addition of water for mixing. It will grout joints from 1/8" to 5/8" (3 mm to 16 mm). Suitable for interior or exterior floors and walls. Contains BioBlock technology for mold and mildew resistance. Available in a 4.54 kg bag.