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How to Clean Grout

Learn how to clean grout with mild cleaners, brushing, stain lifting, rinsing, drying, sealing, common mistakes, troubleshooting, and FAQs.

Home & RepairsEdited by Pramod Tiwari
2 min read

Quick Answer

To clean grout, sweep or wipe the tile first, apply a mild grout-safe cleaner, let it sit briefly, scrub with a grout brush, rinse well, dry the area, and reseal grout if it absorbs water or stains quickly.

Supplies Required

  • Grout brush
  • Mild tile cleaner
  • Baking soda optional
  • Hydrogen peroxide optional
  • Microfiber cloths
  • Bucket
  • Gloves
  • Grout sealer optional

Safety Precautions

  • Never mix bleach with ammonia, vinegar, or other cleaners; CDC warns dangerous vapors can form.
  • Ventilate bathrooms and kitchens while cleaning.
  • Test cleaners on hidden tile and grout first.
  • Avoid abrasive tools on delicate tile.
  • Wear gloves if using strong cleaners.

Step-by-Step Instructions

  1. Step 1

    Remove loose dirt

    Sweep, vacuum, or wipe tile so dirt does not turn into muddy residue.

  2. Step 2

    Apply cleaner

    Use a grout-safe cleaner or mild paste on stained lines.

  3. Step 3

    Let it dwell

    Wait a few minutes so cleaner can loosen soil.

  4. Step 4

    Scrub grout lines

    Use a grout brush with steady pressure.

  5. Step 5

    Rinse thoroughly

    Wipe with clean water to remove cleaner residue.

  6. Step 6

    Dry the surface

    Use a towel or airflow so moisture does not sit in grout.

  7. Step 7

    Seal if needed

    Apply grout sealer if water absorbs quickly and the grout type allows it.

Practical Example

Example: For bathroom floor grout, you vacuum, apply a baking soda paste, scrub with a grout brush, rinse twice, dry, and reseal once fully clean.

Common Mistakes

  • Mixing cleaners
  • Using metal brushes
  • Skipping rinse
  • Scrubbing delicate tile
  • Leaving grout wet
  • Expecting cleaner to fix broken grout

Troubleshooting

Grout still looks dark

Repeat cleaning, check for mildew, or consider resealing or regrouting if stained permanently.

White residue remains

Rinse again with clean water and dry thoroughly.

Grout is crumbling

Stop scrubbing and repair or regrout.

Mold returns quickly

Improve ventilation and dry the area after showers.

FAQs

Can I use bleach on grout?

Use caution and follow product labels; never mix bleach with other cleaners.

How often should grout be sealed?

It depends on grout type and traffic; reseal when clean grout absorbs water quickly.

Will vinegar clean grout?

Avoid vinegar on natural stone and be careful because acids can damage some grout or tile.

What brush should I use?

Use a nylon grout brush, not metal.

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