How to Whiten Grout Around Tile


The grout between tiles is usually quite porous, so it catches all kinds of dust, dirt, oil and other debris. If the tiles are located in your bathroom, the grout soaks up soap scum and moisture, and mold and mildew will start to form on it. If the grout between your tiles is discolored, use oxygen bleach to get it white again. Oxygen bleach comes in a powder form and gets into all of those little pores to break up the dirt and other substances that have built up over time.

Things You'll Need

  • Oxygen bleach
  • Spray bottle
  • Scrub brush
  • Bucket
  • Clean cloths
  • Sprinkle dry oxygen bleach over the tile so it is evenly coated with a thin layer. Use a spray bottle to gently mist the oxygen bleach until it forms a thick paste about the same consistency as toothpaste.

  • Use a scrub brush to scrub the moistened oxygen bleach paste into the grout. Allow the oxygen bleach to soak into the grout for about 20 minutes. Lightly mist the paste every five minutes or so to keep it from drying out.

  • Moisten the paste with the spray bottle, and use the scrub brush to scour the grout. Scrub until you are satisfied with the whiteness of the grout.

  • Fill a bucket with warm water. Dip a clean cloth into the bucket and use it to wipe up the residual oxygen bleach. Check the grout as you go and scrub any discolored grout with the scrub brush until it is white. Repeat until all of the oxygen bleach is rinsed from the surface.

  • Use a dry, clean cloth to dry the tile, or let it air-dry.

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