How to Clean Tile Grout: A Guide

Dirty grout is an unpleasant sight, especially between white tiles. With tiles commonly found in bathrooms and kitchens, ‘how to clean tile grout’ is an issue many Kiwis face. Keeping your grout clean not only maintains the appearance of your space but also supports better hygiene.
 

So, what’s the best way to tackle grimy grout, and how can you keep your tiles looking fresh for longer?
 

This guide walks you through the steps and includes helpful tips for removing stubborn stains and keeping your grout looking cleaner for years to come.

Gathering all the tools and materials you’ll need before you start cleaning your tile grout is a good idea. Here’s a list of what to have on hand before getting stuck in:

- A used toothbrush and a nylon-bristle scrubbing brush

- Disposable gloves and a cleaning bucket

- Grout cleaner spray or white vinegar, baking soda (bicarbonate), and hydrogen peroxide

- A vacuum cleaner

- A cordless electric scrubber (optional)

Prepare the Area 

Start by vacuuming the area to remove loose dust and dirt. This helps prevent debris from spreading as you clean the grout.

 

Create the Cleaning Mixture

Create a DIY grout cleaner by combining three parts baking soda with one part water to form a spreadable paste. For tougher stains, consider adding white vinegar or purchasing a store-bought grout cleaner specifically designed for tile surfaces.

Please note: Always follow the manufacturer's recommended cleaning guidelines for your specific tile type. Avoid using vinegar on natural stone tiles like marble or limestone, as it can cause damage. It is also a good idea to consult the product description to identify if your tile is pre-sealed. 

 

Apply the Grout Cleaner

Use a spray bottle, sponge, brush, or even a gloved finger to apply your chosen mixture directly to the grout lines. Leave the solution to rest for 5–15 minutes to absorb and break down any embedded dirt and stains. If you’re using a specific store-bought grout cleaner, carefully follow the manufacturer’s guidelines and adjust application times accordingly.

 

Scrub the Grout 

Once the mixture has had time to sit, scrub the grout lines in a circular motion using a firm brush or an old toothbrush. Be patient with high-traffic areas or places with visible discolouration. Don’t overlook edges or corner intersections where the tiles meet to ensure you achieve an even result. If the stains don’t lift easily, consider reapplying your solution and letting it rest for up to an hour before scrubbing the grout again. 

 

Final Rinse  

After scrubbing, rinse the area thoroughly with warm water to wash away any leftover mixture and loosened grime. Use a mop or clean cloth to dry the area thoroughly. If you have an extractor fan, turn it on or open your windows to ensure good ventilation for faster drying times.  

• For deep-set stains, apply a paste made of three parts baking soda and one part hydrogen peroxide. The peroxide releases oxygen ions that help lift tough grime.
• For a more intensive clean, consider using a steam cleaner.
• Always spot-test harsh products first to avoid damaging your tiles.

Maintaining fresh-looking grout requires regular care, particularly after applying new grout. 
Follow these recommended points to prevent the build-up: 
 

• Clean regularly to prevent grout discolouration.
• Apply grout sealant every 6–12 months to protect against moisture and staining.
• Use pH-neutral cleaners to preserve grout integrity.
• Avoid harsh chemicals, which can cause grout to deteriorate.
• For kitchen backsplashes, promptly wipe away sauce or oil spills to prevent staining and buildup.

• Steer clear of overly acidic cleaners to prevent grout erosion over time.
• Avoid metal brushes as they can scratch or damage grout.
• Clean your tiles regularly to prevent dirt buildup, which can make future cleaning harder and less effective.
   

For additional cleaning tips around the home, consult the following videos:

 

How to Clean Solid Surface

How to Clean a Stainless Steel Sink