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How To Remove Mold From Walls

Mold is an unwelcome sight in any home – here’s how to get rid of mold and mildew on your walls.


Reading Time: 5 minutes

Written by Eunice Samson

how to remove bathroom mold

Mold and mildew are the bane of most households, but luckily, it’s possible to use everyday cleaning products to banish mold and prevent it from creeping back in again. Mold, whether on walls or other surfaces, like floors and carpets, can be bad for your health, so it’s also really important to tackle the root cause.

Read on for a quick, 3-step guide on how to remove mold from walls in your home and also learn the difference between mold and mildew.

Always follow the instructions carefully when using specially formulated mold cleaners. Alternatively, use an all-purpose product like Cif for cleaning mold off walls easily and safely.

Cleaning mold off walls in 3 steps

Before you start cleaning mold off walls, remember to open the windows or have a fan in the room. Also, make sure you wear protective eyewear, gloves, and a face-mask, as contact with the spores can be harmful. Once you are all set up, simply follow these steps:

  1. Make a solution of chlorine bleach and water – usually one part bleach to three parts water. A good household bleach such as Domex is ideal, as it is proven to kill mold and remove bad odors.

  2. Using a stiff-bristled brush, scrub the blackened area.

  3. Rinse thoroughly and dry.

If this doesn’t work, there are products specifically formulated for mold and mildew that may be stronger.

A word of caution: mold can cause allergic reactions and poor health, so if you have an extensive problem with mold and mildew on walls, it may be best to seek expert help.

How to get rid of mold for good: our top tips

Of course, the question of how to remove mold isn’t your only concern; you’ll also want to prevent it from recurring. Here are five options for that:

  1. Buy a specialised anti-mold product. An anti-microbial spray, for example, can help prevent the spores from settling again. Anti-mold paint can also be purchased from most DIY stores.

  2. Consider installing an electric de-humidifier in badly affected areas. This is ideal for long-term mold prevention.

  3. Look into upgrading your home insulation. Sometimes, but not always, bad insulation is the root of the problem. Walls and ceilings that are properly insulated will be less affected by condensation, and therefore mold.

  4. Let the air flow in your home. Fresh air can help reduce moisture, so open the windows and doors between rooms – including the closet doors - to improve the air circulation.

  5. Take care of your indoor plants. If you want to avoid cleaning mold off walls in the future, you might want to check your houseplants. Although indoor plants create a welcoming environment their soil moist can be an invite to mold growth – so be vigilant! 

The Poll

Would you be more likely to buy a Cleaning or Laundry product that had a QR code visible on the pack over a product without a QR code? 

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Safety Warning

Use biocides safely. Always read the label and product information before use. Remember never to mix cleaning solutions together as this can cause dangerous chemical reactions.    

Mildew vs mold: what’s the difference?

  • Mold is a kind of fungus that develops from airborne spores. It usually grows in damp, warm conditions without much airflow, which is why household bathrooms and loft spaces often suffer from mold. It is often simply caused by humid conditions and lack of ventilation, but sometimes mold on walls can be due to plumbing leaks, both inside and outside the property. Badly insulated heating pipes can also cause a build-up of moisture behind the walls.

  • Mildew is the name for the most common type of black mold on walls. It’s characterised by spots that can then spread over larger areas if left untreated. To find out if you have mildew on your walls, apply some bleach onto the affected area with a cloth. If the dark colour fades after a few minutes, it’s mildew. If not, the patch is probably just dirt.

Don’t panic if the mold and mildew on walls returns: this is a common occurrence, and you’re now well armed with advice on how to clean mold away.

  • Cleaning mold off walls can be easily done with a solution of chlorine bleach and water.

  • Improving air circulation in the home can help prevent mold and mildew

  • When cleaning mold, take care to protect yourself by wearing eye protection, gloves, and a face mask.

Do you want to learn which household cleaning tasks cause the most stress?  Then read our Heated Household data analysis. 

Frequently asked questions on removing mold from walls

Is an anti fungal spray for walls the same as an anti mold spray?

No. The reason there are different products – namely an anti-fungal spray for walls + anti-mold spray – is due to the fact that they do different things. Although mold and mildew may look similar, they require different types of treatment. Mildew is a surface fungus while mold is evidence of a deeper fungi infection.

How do you kill airborne mold at home?

The only effective option if you are hoping to kill airborne mold is to put some air purifiers around your home. A HEPA filter is your best option, as these are designed to remove 99.97% of particles that are 0.3 microns in size or greater.

How do you remove mold from house plants?

If you want to know how to remove mold from house plants, it’s simple. First, remove any from the leaves or stems by wiping with a clean, damp, mircrofiber cloth. If there is mold in the soil, use a spoon to scrape away the offending soil and add an anti-fungal solution to the soil. You can also cover the top level of soil with small decorative pebbles to help prevent mould from developing in the future.

Originally published