By Kerry Hale

How To Clean Bathroom Grout


    • Thursday 31 December 2020
    • 5 minute read

    Often light-coloured and extremely porous, grout is prone to staining. The biggest culprits are mould and mildew, which can turn your grout an unpleasant grey colour, but a build-up of shampoo and shower gel can also turn your bathroom grout an unappealing shade of yellow or orange.

    Thankfully, cleaning mouldy or discoloured grout is easier than you might think, and it’s a quick way to transform your bathroom and breathe new life into it. When it comes to cleaning shower grout and grout around your sink and bath, always start with the mildest method first, and work your way up to harsher cleaners if necessary. Whichever method or mixture you chose, it is important to clean the area thoroughly and get rid of any debris and residue before you target the grout.

    Read on for tips on how to clean bathroom grout and how to keep it clean for longer.

    Cleaning bathroom grout with vinegar

    You will need:

    • Vinegar
    • Baking soda
    • Ammonia


    1. Mix seven cups of warm water, ½ a cup of baking soda, 1/3 of a cup of ammonia and ¼ of a cup of white vinegar. Mix all of the ingredients together until the baking soda is dissolved.
    2. Pour the mixture into a spray bottle, which will make it easier to target the areas you want. Fill the spray bottle and give the solution a thorough shake.
    3. Start on a small area and spray the grout in an area about 1-2 square feet. Ensure the grout is fully dampened. Give the mixture 3-5 minutes to work into the grout.
    4. Time to start scrubbing. Using a hard-bristled brush or an old toothbrush and get to work on scrubbing away the ground-in dirt between your tiles. Apply firm pressure to get rid of the darker stains.
    5. Use a damp cloth to wipe up the dirty liquid and wring out into a separate container. The last thing you want is for the dirt you have just worked so hard to clean to get back into the grout.
    6. Once you have scrubbed and wiped away the dirty liquid, go over the entire surface again with a damp clean cloth.

    Whitening bathroom grout with hydrogen peroxide (for really tough stains)

    You will need:

    • Hydrogen peroxide
    • Baking soda


    1. Mix hydrogen peroxide and baking soda in a bowl to form a thick paste.
    2. Spread the paste onto your grout using an old toothbrush to completely coat the area to be cleaned. Let it soak in for about 5 to 10 minutes.
    3. Like the previous method, use a brush with firm bristles to scrub the grout. Apply more of the mixture letting it set again, if the grout is still dirty.
    4. Use a damp cloth or mop to wipe off the remaining paste. Finish the job by going over the entire tiled area with spray cleaner and wipe down with a clean cloth or mop.

    Keeping grout clean

    Cleaning grout in the bathroom is hard work. So once you’ve got it all clean, it’s worth taking a few precautionary steps to prevent a build-up of grime and mould in the future.

    Dry the grout after every use

    Drying tiles and grout after a shower or bath is one of the easiest ways to keep grout looking brand new for longer. Use an old towel or a squeegee to wipe the shower walls or bath down after each use.

    Seal grout lines

    Using grout sealer will create a protective surface to help prevent staining and help make the grout easier to clean in future. Tiles must be clean and completely dry and the sealer needs to cure fully before you get the area wet again. It’s important to follow the instructions carefully to ensure the sealer is effective. 

    Keep your bathroom well-ventilated

    Keeping your bathroom as dry as possible will help prevent mould and mildew from growing. Use your exhaust fan properly and open a window to ventilate the room after a steamy bath or shower.

    Consider installing wall panels

    Tiling your bathroom (or cleaning grout!) isn’t for everyone though, and if that’s the case, a hassle-free alternative are our wall panels. They’re easy to fit, low maintenance and affordable. They can be cut to size to fit any area of your bathroom instead of tiles. Our range features BioCote® technology that reduces bacteria and mould growth by up to 99.9%!

    Find out even more bathroom cleaning tips in our guide to cleaning shower glass and removing watermarks.

    You may also be interested in:

    Help us make our site better Provide feedback