How to Clean Grout Lines: 7 Simple DIY Steps

By Tiling Specialist

Updated on:

Learn how to clean grout lines yourself to prevent dirt and mold build up that can be harmful to you and family.

Dirty and moldy grout lines can be unsightly to visitors coming to your house.

They can cause health problems when molds spreads to the whole bathroom.

What if my grout line is damaged?

If you have gaps in your grout lines, you might need to do re-grouting. This means, you have to get a matching colour grout cement, mix it with water to form a paste and patch the affected areas.

Please ensure that you follow the manufacturer’s instruction when mixing.

We provide a detailed article on how you can repair them yourself.

For a bigger area, you may want to hire a professional to get them done for a uniform look.

How to clean grout lines yourself?


Before we start cleaning, it is important to prep the area first. Use a broom or vacuum to remove any loose dirt or debris from the grout lines. This will make the cleaning more easier, as it will allow the cleaning solution to penetrate deep into the lines.

Get the right cleaning detergent

There are many different types of detergent available on the market.

This include:

  • Vinegar.
  • Baking soda.
  • Hydrogen peroxide.
  • Commercial grout cleaners.

Each of these solutions has its own unique properties and benefits, so it is important to choose one that is appropriate for your specific needs.

For example, vinegar is a great natural cleaning solution that can effectively remove mildew and stains, while baking soda is effective for removing tough stains and grime.


You can do this by using a spray bottle, a brush, or a sponge, depending on the type of solution you are using. Make sure to apply the solution generously, ensuring that it covers the entire grout line.

In our experience, using a spray and dabbing with sponge immediately ensure the solution does not slide down causing wastage.

Wait for the solution to do it’s job

After applying the solution, it is important to let it sit for a few minutes to penetrate deep into the lines, effectively breaking down dirt and grime.


Use a grout brush or a toothbrush, depending on the size of the grout lines. Give those lines a good scrubbing making sure to focus areas that are really dirty or stained.


You can use a damp sponge or hose if it is in wet area to rinse the solution, dirt and debris.


Do this by using a dry cloth, towel or by allowing it to air dry. Make sure the areas are completely dry before walking on them or to prevent slipping when the floor is wet.


By following these simple tips, you can effectively get clean grout lines and try to keep them look new.

Remember, maintenance is better than replacing all. Good luck!

You may read more on our comprehensive articles on types of damaged tiles, grouts and waterproofing issue.