... biocides, providing effective, lasting protection against mould and mildew.To grout joints between porcelain, ceramic, natural stone and quarry tiles, as ... SURFACE PREPARATIONEnsure all loosen materials and droppings are removed from grout joint prior to grouting. For porous tiles such as ... water; Thin filler grouts: 25kg powder: (8.5~9) kg water.3.Use a rubber trowel to spread tile grout adhesive into ...