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How to Clean Grout: A Comprehensive Guide

Grout is a porous material that is used to fill the gaps between tiles. It can be found in bathrooms, kitchens, and other areas of the home where tile is used. Grout is often prone to staining and discoloration, which can make it unsightly and difficult to clean. In this guide, we will show you how to clean grout between tiles and make it look like new again.

The Importance of Clean Grout in Your Home

Grout is a crucial component of tile floors and walls, as it helps to keep the tile in place and maintain the overall aesthetic of your home. However, grout can easily become stained and discolored over time, making it unsightly and difficult to clean. Not only does dirty grout detract from the overall appearance of your home, but it can also harbor bacteria and allergens. This is why it's important to keep your grout clean and maintain it regularly.

How Grout Becomes Dirty

Grout is a porous material that absorbs dirt and liquids, making it susceptible to staining and discoloration. Additionally, grout is often located in high-traffic areas of the home, such as bathrooms and kitchens, which further contributes to its discoloration and staining. Other common causes of dirty grout include:

  • Lack of regular cleaning: If grout is not cleaned regularly, dirt and grime can build up, making it more difficult to remove.

  • Use of harsh chemicals: Some cleaning products can damage grout and cause discoloration.

  • Moisture: Grout is susceptible to mold and mildew growth if exposed to moisture.

The Consequences of Dirty Grout

Not only is dirty grout unappealing to the eye, but it can also have negative consequences for your home and health. Some of these consequences include:

  • Allergic reactions: Dirty grout can harbor allergens and irritants, which can cause allergic reactions in some people.

  • Bacteria and germs: Grout that is not cleaned regularly can harbor bacteria and germs, which can lead to illness.

  • Damage to the tile: Dirty grout can damage the tile and cause it to become loose or break.

  • Reduced property value: Dirty grout can make a home appear unkempt and decrease its overall value.

How to Keep Your Grout Clean

To keep your grout clean, it's important to maintain it regularly. This includes:

  • Cleaning grout regularly: Use a mild cleaning solution and a stiff-bristled brush to scrub grout.

  • Sealing grout: Sealing grout helps to protect it from staining and discoloration.

  • Avoiding harsh chemicals: Use mild cleaning solutions to avoid damaging the grout.

  • Removing moisture: Dry up any moisture as soon as possible to prevent mold and mildew growth.

By following these steps, you can effectively maintain your grout and keep it looking clean and new. Not only will this improve the overall appearance of your home, but it will also promote a healthy living environment.

Step 1: Gather Your Supplies

Before you begin cleaning your grout, you will need to gather the following supplies:

  • Water
  • White vinegar
  • Baking soda
  • A stiff-bristled brush
  • A spray bottle
  • A towel or rag

Step 2: Mix a Cleaning Solution

To make a cleaning solution for your grout, mix together equal parts water and white vinegar in a spray bottle. If your grout is particularly dirty or stained, you can also add a small amount of baking soda to the solution. Shake the spray bottle well to mix the ingredients.

Step 3: Spray the Grout

Using the spray bottle, generously spray the grout with the cleaning solution. Be sure to saturate the grout completely.

Step 4: Scrub the Grout

Using the stiff-bristled brush, scrub the grout thoroughly. Be sure to get into all of the crevices and corners of the tile. Scrub in a circular motion, and apply moderate pressure.

Step 5: Wipe Down the Tiles

After scrubbing, use a towel or rag to wipe down the tiles. Be sure to remove any remaining cleaning solution and debris from the tiles.

Step 6: Repeat as Needed

If your grout is still dirty or stained, repeat steps 3 through 5 until the grout is clean.

Step 7: Seal the Grout

To keep your grout looking clean and new, it's important to seal it. Sealing the grout will help to protect it from future staining and discoloration. You can use a grout sealer, which can be found at most home improvement stores.

Additional Tips

  • For tough stains, try using a paste made of baking soda and water. Apply the paste to the stained area and let it sit for a few minutes before scrubbing.
  • For mildew or mold, mix a solution of equal parts water and hydrogen peroxide in a spray bottle. Spray the solution onto the affected area and let it sit for a few minutes before scrubbing.
  • For heavy-duty cleaning, consider renting a steam cleaner. Steam cleaners can effectively remove dirt and grime from grout and tile.
  • Regular cleaning and sealing will help to maintain the appearance of your grout and extend its lifespan.


Maintaining the cleanliness of your grout is important for both the appearance of your home and the health of your family. By understanding how grout becomes dirty, the consequences of dirty grout, and how to effectively clean it, you can keep your grout looking new and ensure a healthy living environment. Be sure to follow the tips and methods outlined in this article to effectively clean and maintain your grout. Remember that regular cleaning and maintenance is the key to keeping your grout clean and looking new. When you need a professional cleaning, call Klean Dry Carpet & Upholstery Cleaning