How to clean or whiten old discolored or stained orange tile grout

Written by greyson ferguson
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How to clean or whiten old discolored or stained orange tile grout
Clean the grout found in between tiles. (Tile image by Kerry Adamo from

As the grout in between tiles (either on the floor or wall) age the grout begins to discolour, typically to an off-orange hue. This colour is rather off-putting, especially when compared to a new, white tile grout. However, instead of replacing all the grout it is possible to clean the discoloured grout and return it to a whiter, newer looking appearance.

Skill level:
Moderately Easy

Things you need

  • Baking Soda
  • Vinegar
  • Ammonia
  • Bucket
  • Spray bottle
  • Dish soap
  • Brush
  • Rag
  • Bleach

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  1. 1

    Combine a 1/2 cup of ammonia, 1/3 of a cup of vinegar and 1/2 a cup of baking soda into a plastic bucket. Add in 7 cups of water and stir the mixture together.

  2. 2

    Pour the mixture into a spray bottle. Shake the bottle up to ensure all the products are thoroughly combined.

  3. 3

    Spray the grout and allow it to sit for a few minutes. Rub over the grout with a brush (such as a toothbrush).

  4. 4

    Wipe down the grout with a rag to remove the loosened dirt.

  5. 5

    Repeat the process again to clean off additional dirt still on the grout. Wash off the grout with soap (standard dish soap works fine) and water to remove all of the ammonia-based mixture.

  6. 6

    Apply bleach to the troubled grout and wipe it clean. The bleach helps bring up the whiteness of the grout. Either pour the bleach directly onto the grout or soak a sponge into the liquid and rub it in.

Tips and warnings

  • Avoid mixing bleach with ammonia as it creates toxic fumes.

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