How To Remove Mold From Painted Walls? (A Step-by-Step Guide)

Mold can grow anywhere in your home from your bathroom walls and floor, under the carpet, wooden floor, ceiling, and your painted walls aren’t spared either. If you notice mold on your interior walls, especially those that are painted, then you must take action hastily because the mold problem might be bigger than you think.
The problem with mold is that it doesn’t just make your walls look unappealing due to visible black, white, or even green spots and bad odor, it also increases your risk of developing numerous health complications.

For example, mold infestation in your home can cause severe allergic reactions in sensitive individuals, conditions like asthma, respiratory illnesses, and other respiratory complications. Mold is also known to cause weakened immune systems in some individuals.
Therefore, it’s important that you get rid of the mold growing on your painted walls as soon possible.

Before we discuss how to remove mold from painted walls, you need to first learn about the different types of mold. They include:

  • White mold
  • Black mold
  • Green mold
  • Blue mold

What is white mold?

White mold is a typ of mold that often grows in damp areas. You may have even encountered white mold on food, which is usually a sign that the food is going bad. White mold usually looks like bright, fluffy-like spots.

Unlike black mold, white mold is not a specific species since a number of mold species may appear whitish in color. For example, white mold can be species like Penicillin, Cladosporium, and Aspergillus.

What is black mold?

Black mold or Stachybotrys chartarum is commonly referred to as “toxic mold” as it’s associated with many health complications. It has a slimy black appearance and typically grows in places with continuous moisture, like an area around a leaky water pipe.

What is green mold?

Green mold is a comon type of mold that often appears in different species of mold like Aspergillus, Penicillin, and Cladosporium. These species are known to product allergy-inducing spores and sometimes, harmful mycotoxins.

What is blue mold?

Blue mold is a form of penicillin mold, which is the same type of mold from which the antibiotic penicillin is made. However, just because blue mold is used to make penicillin doesn’t mean it’s safe to have around the house. Inhaling pores of blue mold can cause allergic reactions, sinus infections, and inflammation of the lungs.

How to Identify mold on painted walls?

To identify mold-infested areas on you painted wall, you need to first determine if its mold or mildew. This is because mold is often confused with mildew. The first thing to look for is signs of discoloration on the walls. Finding green, brown, orange, or even black spots is a sign of mold growing on your painted walls.

How to remove mold from painted walls?

Now that you’ve learnt and understood te different types of
mold, it’s time to learn how to solve the mold problem once and for all. To
remove mold from your interior walls, use these effective solutions.
Things you will need:

  • Chlorine bleach and water
  • Stiff-bristled brus


  • Laundry detergent
  • Spray bottl
  • Rubber gloves
  • Gas mask
  • Anti-milew paint
  • Store bought mold remover (if you don’t want to use a homemade remover)

NB: Ventilate the area before removing mold



1. Bleach/water Approach

Bleach is one of the best and most effective mold removers.
It’s a well-known mold remover and killer. In fact, many commercial solutions
contain bleach as an active ingredient. To remove mold using bleach:

  • Mix one part bleach with three parts water to form a solution
  • Mix the bleach solution. Use rubber gloves to protect your hands from the harsh bleach chemicals. Then, apply on to the affected areas on your painted wall with a stiff-bristled brush or sponge. You can also use a spray bottle.
  • Allow the solution to sit in contact with the mold for a few minutes, then use the old-fashioned hard scrubbing to scrub it off until all the mold spots have disappeared. This should help get rid of the majority of the mold from your mold-affected wall. While scrubbing, don’t spread the spores to unaffected areas- they might wind up on your clothes
  • Rinse out thoroughly with warm water and leave to dry
  • Paint the wall surface with an anti-mildew paint to prevent mold from growing back
2. Vinegar/Borax/Water Method

The vinegar-borax-water mixtue is an effective homemade mold removing solution. Borax can especially be effective in treating the mold and inhibiting its growth. To clean mold and mildew off painted walls using vinegar and borax, use this method:

  • Mix two tablespoons of borax with 2 cups of warm water. Ensure the borax completely dissolves into water. Warm water will help dissolve it faster.
  • Add a quarter cup of vinegar to the solution
  • Pour the solution into a spray bottle if you want to apply it by spraying. Alternatively, you can use a sponge to apply the solution onto the moldy areas on your painted wall.
  • Leave for a few minutes and then scrub the mold-affected wall using a stiff-bristled brush. Scrubbing the mold will be much easier as warm water will loosen it up a little bit.
  • Rinse off and leave to dry
  • Paint the wall using an anti-mold/mildew paint

3. Bleach-Based Mold Remover

If you don’t have the necessary ingredients to make a homemade mold remover, you can simply purchase a bleach-based mold remover. Bleach-based mold removers are highly effective in removing mildew and mold from walls. They also help kill mold and prevent it from growing back. Head over to your local store and purchase one.

To remove mold using a specially formulated mold remover:


  • Dip a sponge into the mold remover and apply the solution to the mold area
  • Leave for a few minutes
  • Scrub the mold off using a stiff-bristled brush. Remove the spots with a cleaner
  • Rinse off and leave to dry

Depending on the condition of your wall, these remedies have been proven to be very effective in removing mold.

NB: If you have a mold-infested drywall or a drywall with excessive moisture damage, the drywall must be removed and replaced. Also, if
you notice splotches of mold on your tile grout, consider using the same solutions.

How to prevent mold/mildew from growing in your house?

Mold and mildew are often caused by an abundance of moisture in the house and water infiltration. Mold appears on the walls as either a white, black, green, or blue discoloration.

To avoid the stress and hassles that come with mold removal, its best to prevent it from developing in the first place. Some of the best ways to prevent mold is to decrease indoor humidity, prevent condensation, fix water problems, and use anti-mold paint on walls.

Mold tends to grow on drywall and painted interior walls infiltrated by water. It will grow and penetrate into walls that become damp due to constant water exposure. So it’s best to fix any water leak as soon as possible.

When to hire a mold removing professional?

Of course, choosing to do it yourself can help remove some mold and help you save money that would have otherwise been spent on hiring professionals to do it for you. This is especially if you have minor mold problems in the home. If you have severe mold-infestation, you may not have the skills nor the right products/equipment to get rid of it completely.

In such a case, mold is better off remediated by professionals. They use bleach or commercial mold-killing chemicals to remove the mold. So if you are looking to get rid of all the mold on your walls and prevent it from coming back, it’s highly advisable that you hire experts.


Avatar for Georgio Atana

As a General Contractor specialized in Restoration Environmental and Reconstruction, my professional goal is to keep up with the ever-changing rules, regulations, and laws in the restoration industry. I continue to strive to make the property recovery process a positive and good experience for each client.