How to Clean Mold in Shower Grout Naturally

  • July 22, 2019
  • / By Dale Keese
Minimalist Bathroom

Mold grows and thrives in warm and moist places that are not well ventilated, which makes your bathrooms, laundry room, kitchen and basement ideal for mold infestation where the air circulation is usually poor and humidity is always high. So, you are likely to find mold in these rooms – on the walls, between the tiles, on the caulking, or ceilings.

Minimalist Bathroom

However, most commonly, you will find mold on tile grout. The reason for this is that tiles are usually used in areas where there is plenty of moisture such as bathroom floors and walls, shower areas, kitchen backsplashes, and the uneven and porous surface of the grout makes it particularly vulnerable to mold growth.

Mold growth on grout not only makes your bathrooms and kitchen look dirty and old but also poses serious health risks and may even compromise the structural integrity of your home. You need to find efficient ways to prevent mold growth in order to prevent the problems caused by mold and also save yourself money and the hassle. 

The best way is to remove any mold from the tile grout as soon as you notice it or better still, prevent the mold from growing at all. Another effective way to prevent the growth of mold and mildew is by sealing the grout using a high-quality grout sealer

In our article, we will provide all that you need to know about how to clean mold in shower grout naturally and effectively.

Cleaning the mold from the shower grout needs some effort and patience. Not only should you clean all the patches of mold that are visible, but you must also disinfect the entire area to ensure that all the spores have been killed and that your bathroom or kitchen is completely safe and hygienic.  

So, how to clean mold in shower grout naturally? There are many different ways by which you can clean the mold from your shower grout and prevent it from growing again.

Use Chlorine Bleach

The most commonly used cleaning agent to remove shower grout is chlorine bleach, which not only cleans the mold effectively but also kills the spores of the mold and disinfects the entire area. It also removes soap residue buildup from the grout and the tiles. There are two ways to remove mold from the shower grout using chlorine bleach.

Cleaning Brushes

1st Method

In a spray bottle, mix 1 part chlorine bleach and 4 parts water. Spray the solution on the affected area and wait for around 30 minutes. Then, using a toothbrush, scrub the grout lines vigorously. Rinse with cool water. If required, repeat the process.

2nd Method

You can scrub the chlorine bleach on the moldy grout directly with a toothbrush. Allow the bleach to rest for around 20 to 30 minutes and then rinse off with warm water. If necessary, repeat the process.

However, there are a few things to remember when using chlorine bleach. The bleach may cause discoloration or fading and so you should take care not to use it on colored grout or tiles. The fumes from the chlorine bleach can irritate your eyes, respiratory tract and skin and so it is recommended that you wear rubber gloves, goggles and a mask while using the bleach to remove shower grout.

Also, make sure that you open out the windows or ventilate the room well while you’re cleaning with bleach and leave the windows and doors open for 1-2 hours after you finish cleaning to ensure that all the harmful fumes are removed from the room.

Use Baking Soda

While using baking soda to clean the mold in your shower grout is fairly effective and will not discolor or harm the tiles or have any health risks to you and your family, it may not be as effective as bleach in killing mold spores. There are different methods of how you can use baking soda to clean the mold in shower grout.

  • Make a solution with 1/2 a cup of baking soda in 1 gallon of water and then spray this solution on the affected area. Let it rest for half an hour and then rinse thoroughly using warm water.
  • Using a damp sponge, dip it into the baking soda powder. Scrub the grout lines and the tiles with the baking soda. Then rinse clean using warm water.
  • Make a thick paste using ½ a cup of baking soda and some water. Apply the paste directly on the moldy grout and let it rest for around 10 minutes. Using a stiff bristle brush, scrub the paste away and then rinse the area with water. Repeat the process if required.  

You can also make use of borax powder, in the same way, to clean mold in the shower grout. Borax is highly alkaline and is a very effective cleaner, disinfectant, and deodorizer.

Use Salt

You would be surprised to know that salt can kill single-celled organisms such as mold very effectively. So, to remove mold from the shower grout, all you need to do is apply salt on the areas affected by mold. To do this, take a towel and wet it. Sprinkle the salt on the damp towel and then scrub it on the moldy grout lines. Let the salt remain overnight and, in the morning, rinse the tiled surfaces with clean water.

Cleaning Supplies

Use Vinegar

Vinegar is an excellent, as well as, a natural cleaning agent and because it is acidic, it creates an environment that prevents the growth of mold and bacteria. When you first see signs of mold growth on the shower grout, in a spray bottle, make a solution of equal parts of water and white vinegar and spray the mixture onto the affected area generously. Let it rest for around 30 minutes and then scrub the surfaces vigorously with a bristle brush and then rinse with warm water. It is recommended that you repeat the process many times for best results.

You could use tea tree oil instead of vinegar in the same way mentioned above. Add 2 tsp of the tea tree oil to each cup of water in the spray bottle and spray on the moldy shower grout. Wait for a few hours and then rinse with clean water. Ensure that the windows are opened and there is good air circulation in the room to offset the strong smell of the tea tree oil or vinegar.

However, if the shower mold growth is very extensive, then natural products like vinegar and tea tree oil may not be sufficiently effective to remove it.

Use Hydrogen Peroxide

When all the above methods fail, you could use hydrogen peroxide for shower mold removal, which is a very effective fungicide, as well as, a whitening agent. Make a mixture of hydrogen peroxide and water and spray it on the moldy area; however, applying the hydrogen peroxide directly on the moldy grout can be more effective and give better results.

  • Mix some white flour and hydrogen peroxide and make a thick paste. Apply this paste to the moldy grout and leave it overnight. In the morning, rinse well with cold water.
  • You can also apply a paste of baking soda (as discussed earlier) over the moldy grout. Over this paste of baking soda, pour hydrogen peroxide. The mixture will start fizzing, which will loosen the mold. Scrub the area with a bristle brush and then rinse with clean water. Repeat the process if required.
Girl in the Shower

Now that you have read about some of the methods of how to clean mold in shower grout naturally, you will surely agree that the best way to clean mold in the shower grout is by using natural cleaning products. However, sometimes, even strong products such as bleach or hydrogen peroxide may not be potent enough to kill the mold spores and eradicate the problem completely.

In such cases, if you feel that the mold problem is too much for you to take care of on your own, it may be a good idea to use professional mold removal and remediation professionals who will use advanced tools and techniques to remove the mold before it spreads uncontrollably and causes damage to your health and home.