How to Make Tile Grout White Again


If the grout between the tile in your home is white grout, as opposed to gray, red or brown, keeping it visibly clean can be a real trick. Grout is relatively absorbent, and stains and discoloration can settle deep where mere surface scrubbing won't get it out. Oxygen bleach is a powdered cleaner that reacts with oxygen to lift stains out from under the surface, literally bubbling them out.

Things You'll Need

  • Household tile cleaner
  • Old toothbrush
  • Oxygen bleach (powder form)
  • Bowl
  • Spoon
  • Rubber spatula
  • Scrub the grout clean with household tile cleaner and a stiff toothbrush, taking up all surface dirt. Rinse off the grout. Let it dry.

  • Put 1/2 cup of oxygen bleach in a bowl. Add hot water while stirring with a spoon. Add the water slowly, making a paste that's about the consistency of cake frosting.

  • Spread the paste over the grout lines, using the rubber spatula. Put it on thickly, so it covers completely. Mix up more paste if necessary to cover it all.

  • Allow the paste to sit on the grout for half an hour. It bubbles and fizzes as it works into the grout surface and lifts out stains. Watch the lines and add more paste if any areas absorb the paste completely and become dry.

  • Scrub the grout lines vigorously with the toothbrush. Rinse well. If the grout isn't as clean as you want it, repeat the whole process until it is.

Tips & Warnings

  • Avoid prolonged skin contact with the oxygen bleach. Wear goggles when applying and scrubbing.

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