How To Remove Mould From Your Walls: A Step By Step Guide

21 December 2020

You’re sitting at home and you look up and you notice a black patch on your walls, you try and wipe it off but it isn’t going anywhere.

Unfortunately, it’s likely to be mould.

Not only is mould unpleasant to look at but it is unhealthy and could be a sign of a more serious, and costly, problem. 

Leakages, condensation and high humidity levels are all common causes of mould buildup. 

Having mould growing on your walls is never an ideal situation but before you call in the painters and decorators, fear not, there is a much simpler way of removing mould from your walls. 

Method: Removing Mould With Bleach 

What You’ll Need:

  • Bucket
  • Gloves
  • Mask
  • Chlorine bleach 
  • Water
  • Cloths
  • Ladder (dependent on area affected)

Step 1: Mixing the bleach solution

Firstly, before making the bleach solution, put on your gloves and cover your mouth and nose with your mask to protect yourself from skin irritation and inhaling the bleach fumes, as well as any spores that may be released.

Once protected, you can mix a solution of one part bleach to ten parts water in a bucket. Opening the windows for ventilation is also a good idea. 

Step 2: Cleaning your walls 

Dip one end of the cloth in the bleach solution, and gently squeeze to remove excess water. If required, position your ladder against the wall and climb the ladder so that you’re able to reach the affected area. 

You can now wipe and clean away the mould, redipping the cloth until you have successfully removed all of the mould. Do not worry if the solution gets too dirty, you can simply make a fresh solution. 

Step 3: Dry your walls 

Once your wall shows no trace of mould, use a dry cloth to dab on the cleaned areas to soak up as much moisture as possible. 

Avoid using water to rinse the walls once they have been cleaned. This is because the bleach acts as a sanitiser to help prevent mould growth. 

Preventing mould 

Whilst following our step-by-step guide to removing mould can help you to kill unsightly black mould, preventing mould from forming to begin with is always the best option. 

But how can you prevent mould buildup? Well, condensation is a favourite of mould. 

Increasing the ventilation in your home is a great way of decreasing the buildup of condensation. Open the window for an hour a day, if possible.

Alternatively, a dehumidifier could be used to remove moisture from the air.For more information and advice on how you can avoid mould from growing in your home, see our double glazing condensation article.