When grout becomes discoloured or damaged, replacing the entire floor is unnecessary, but removing just the grout can be a tedious task.
Parex Davco Rejuvenation Grout, about $27 for 1.7kg, contains biocide, which resists mould or bacteria growth and makes reviving the look of tiling fast and easy.
CLEAN the tiles and grout with a soap and water mix or sugar soap.
APPLY the Rejuvenation Grout with a float, spreading it diagonally and evenly across the joints. Work on 1sqm at a time.
LEAVE for a few minutes, then clean off the excess grout with a damp sponge, lightly wiping it in a circular motion. Clean the tiles using the same method, avoiding the joint