Keracolor S is a premium-grade, pre-blended, polymer-modified sanded Portland-cement tile grout that requires only the addition of water for mixing. It will grout joints from 1/8" to 5/8" (3 to 16 mm). For interior and exterior floors and walls. Contains BioBlock(tm) technology for mold and mildew resistance. Biscuit. 4.53kg.