How To Completely Clean Mold From Walls-Like a Professional


Mold on the walls of your house is frustrating and a potential threat to your health. It can cause many problems. When you detect the mold’s attendance on your walls, you need to take immediate action to remove them. It not only makes your living environment unpleasant but also destroys the beauty of your home.

Molds usually grow in different colors. However, black mold in walls can be a real threat and destroy your home if left untreated for a long time. When you are taking necessary steps for getting mold off walls, you need to understand certain tips and tricks. This piece of article will help you to know how to remove mold from walls.

how to remove mold from walls
clean mold from walls

What causes mold on walls?

Out of many unknown reasons, the most common causes of mold growing on the walls are water leaks, humidity, and condensation. Leaking pipes inside your walls can be one of the most common reasons why mold is growing. If your room’s humidity remains high all the time, mold will start growing. Condensation happens when moist air meets the cold surface of your walls. The air cannot hold the moisture. Tiny drops of the water begin appearing.

How do you tell if you have mold or mildew in your walls?

Mold and mildew both kinds of fungi usually grow in humid conditions with poor ventilation. Mildew often grows with a gray or white color with a powdery texture. You can find them laying over the flat surface in the moist areas. As the fungus grows on the surface, it does not damage your property.

Mold usually grows with yellow, black, blue, or green like color with a slimy texture. It generally spreads from the airborne spores. Mold can be so dangerous. It can gradually destroy your home and cause many health problems if left unnoticed for an extended period. To keep your home safe from both types of fungi, you need to know how to get rid of mold and mildew on walls.

How can you detect mold in your walls?

Mold can grow with different colors, such as black, yellow, green, or even blue with a slimy like texture over it. The followings are some of the symptoms that can certainly help you to know the attendance of mold on walls-

Black mold: Black mold usually grows inside the house on the wallboard or other surfaces. Black mold in walls produces “mycotoxins” that can be extremely harmful to humans and pets. It should immediately be removed once detected.

White mold: White mold usually grows in a cold and damp environment, especially in the basement. White mold on walls can endanger your health. When you identify the white mold on your walls, you should take immediate action to eradicate it.

Blue mold: Blue mold is also a common type of mold. Blue mold usually grows in damp areas of your home, such as on the bathroom’s walls and ceilings. To keep the environment healthy in your bathroom, you must eradicate it once identified.

Green mold: Green mold is a prevalent mold that grows in damp areas similar to the blue mold. Green mold on walls can be removed with the help of bleach by scrubbing the areas where infected.

How to detect mildew in walls?

Mildew refers to a type of fungi that usually has a gray or white appearance. You can easily identify them lying on the surface in moist areas. Mildew can be removed easily by scrubbing the infected areas with bleach. Mildew is less threatening compared to the mold.

How to check for mold behind walls?

Mold can grow inside your walls or behind the walls without being noticed. They can easily grow all over your house, discreetly. Mold inside walls or mold behind walls may not be visible at an early stage.

For identifying hidden mold, you need to know how to check for mold behind walls. In terms of the drywall, you need to cut a large hole. This is the most definitive way of detecting whether there’s mold inside your walls. If you experience a musty odor from inside, it is likely that the area is infected with mold.

How to remove mold from walls?

To remove mold from walls, you need to know certain things. These are described below:

Applying borax: You need to take a container. Now take a gallon of hot water and mix a cup of borax. You need to mix it well before applying it to the infected areas. You now scrub the mold off the wall by using a brush. After brushing, now wipe it and allow the walls to dry.

Using Vinegar and Baking Soda: Studies found that white vinegar is an ideal product that can kill 80% of mold spores. You need to pour some white distilled vinegar into a spray bottle. After that, spray over the infected areas and leave it for an hour. Then, to wipe it with a sponge and warm water.

After cleaning the infected areas of the wall with vinegar, you need to scrub the mold. You now need to apply baking soda. Mix a teaspoon of baking soda and two cups of water in the spray bottle and shake it well. You now have to spray on the infected areas and use a brush to remove the mold. Before finishing, you can spray once again with the vinegar or baking soda on the walls to ensure that all molds are killed.

Tea tree oil: It has the antifungal and antibacterial properties that can help get rid of mold. You need to add a teaspoon of tea tree oil and two cups of water in a spray bottom. Now spray over the infected areas and wipe to clean. Your mold will be removed.

Grapefruit seed extract: Take a spray bottle and add 10 drops of grapefruit seed extract and a cup of water. Now shake the bottle well. Spray all infected areas. After a few minutes, use a clean cloth to wipe away the mold. You can keep doing this for 2 to 3 days to remove the growing mold on your walls.

Bleach: Mix one portion of bleach with three portions of water and then apply it over the infected areas. Leave it for 10 minutes and then scrub the mold with a brush. You now have to rinse with clean water and dry the area.

Using Hydrogen Peroxide and Vinegar: Pour 3 percent hydrogen peroxide in a spray and then spray over the infected areas. Leave the areas for 10 to 15 minutes. You now have to scrub the walls with a brush and clean the mold. If you add distilled white vinegar, this will make the process stronger to kill the mold.

How to clean molds from different types of walls?

Mold removal technique may differ depending on the type of wall you have:

Remove mold from drywall

Molds can grow easily on the drywall. You need to apply the vinegar solution. If you still find mold even after removing it from the wall, you may need to replace the drywall. You can easily find mold-resistant drywall available on the market.

Remove mold from concrete walls

When you find molds over on the concrete, the best solution can be using the vinegar or hydrogen peroxide method. You should use a scrub to reach all infected areas to remove the mold.

How to clean mold off cinder block walls?

In terms of the cinder blocks, you have to clean the wall first. You then have to apply any of the methods described above and then leave the wall for 20 minutes. You now have to wipe the wall to clean the mold.

How to remove mold from wallpaper?

The best methods used for wallpaper are the tea tree oil and grapefruit seed extract or vinegar. Both methods can help to remove mold from the wallpaper.

Hiring a mold removing professional

Mold removing professionals usually maintain a remediation procedure. They typically start by observing the mold by taking samples. They then access the extent of the issue and employ advanced tools to eradicate them from the walls.


Molds can be hazardous for your health. It can gradually spread all over your home if left untreated for a long time. When you see mold is growing any of your walls, you need to take immediate action by employing the methods described above. If you see the level of growth is severe, you need to call a professional to help you getting the mold off walls. This above description of “how to remove mold from walls” can be an ideal set of guidelines for you to remove mold from any type of wall you have.

Also read,

Worrying about Mold in Attic? Remove attic mold effortlessly

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