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How to Clean Mold off Basement Walls [5 Effective Methods]

Mold in the basement walls can damage the structures of houses along with our health. We know how annoying it is. That’s why you must clean the molds off our basement walls.

How to clean mold off basement walls?

Well, you can clean the molds by yourself with some cleaning materials ready at home. Vinegar, bleaching, borax, etc are some of them. There are many steps to follow while using them. There are 2 more like them to clean molds. You’ll need some tools like a spray bottle, bucket, bristle, scrub, etc.

Well, that’s not all. I’ve got a lot more to share with you. I’ve gathered all these 5 possible ways with the necessary explanation only for you. By using them, you can get your basement wall clean again.

To know more, keep reading!

How to Identify Molds in The Walls?

Identifying mold is also important. Because sometimes we confuse dirt with molds. 

That’s why we need to ensure that it is mold or not beforehand.

To test the molds, you need to collect some samples from the wall. You’ll test these samples with a mold testing kit.

There are several mold testing kits in the market with the least budget. After buying them, you can test the mold sample at home.

You can buy your mold testing kit from these recommended products below:

Product 1Healthful Home 5-Minute Mold Test
Product 2 Seeml Labs DIY 3 Mold Test Kit
Product 3Mold Inspection Network DIY Mold Testing Kit 

Now that we’ve identified mold at home, let’s jump in to know the entire process!

5 Effective Tips to Clean Mold off Basement Walls

There are 5 effective methods to clean mold off basement walls.  By following any of them, you can have your desired clean basement wall.

Method 1 of 5: With The Help of Vinegar

First, we’ll learn how to clean mold off basement walls with vinegar

It’s one of the safest and easiest ways. For this, we’ll need-

  • White Vinegar
  • Spray Bottle
  • Baking soda and water

We don’t need to dilute the vinegar. Sprinkle it with a spray bottle on the molded walls. Then wait for an hour so that all molds die.

After an hour, you can spray baking soda mixed with water on the same area. It’ll give you better results.

After this, you need to wipe down the molded areas with clean water.

Do you wanna find out how to clean mold off the drywall in the basement? Then vinegar’s your desired solution.

Method 2 of 5: With The Help of Borax

Borax is also popular for cleaning molds. To make the cleaning solution, you’ll need-

  • 1 cup Borax
  • 1-gallon hot water
  • Bucket
  • Scrub brush

If you’re wondering how to clean mold off basement walls with borax, it’s pretty simple. First, in a bucket, you need to mix 1 cup borax with 1-gallon hot water. Then clean the area with the help of a scrub brush.

Then wait for some time and rinse it off as it’s harmful to keep it forever.

Method 3 of 5: With The Help of Bleach

Bleach is also a very good mold-killer but it’s good for only sealed surfaces.

The things you’ll need here are

  • 1 cup bleach
  • 1-gallon water
  • Spray bottle 
  • Sponge and a bucket

Do you know how to clean basement walls with bleach?

For this, you need to mix one cup of bleach with one gallon of water to weaken it. Then use the diluted bleach in the affected areas.

Never use vinegar or ammonia with bleach. If you don’t like strong, long-lasting traces of bleach, try to remove the smell of bleach.

Method 4 of 5: With The Help of Hydrogen Peroxide

Hydrogen Peroxide is so good that it can kill anything on the basement wall. To make the solution we’ll need-

  • A 3% hydrogen peroxide
  • Spray bottle
  • Bristle brush

You need to spray 3% Hydrogen Peroxide with a spray bottle on the molds. Then wait for about half an hour.

Then scrub the area with a bristle brush for about 10 minutes. It’ll be better if you scrub the area with warm water. Then make the area waterless with a clean towel.

If you’ve concrete basement walls, then it’s the best way to clean mold off concrete basement walls.

Method 5 of 5: With The Help of Tea Tree Oil

Tea tree oil is good for both your skin and killing molds. It’s an effective fungicide. There are also other uses of tea tree oil

The things you’ll need here are-

  • 1 tsp tea tree oil
  • 1 cup of water
  • Spray bottle
  • Scrub brush, sponge

You’ll have to spray the affected area with tea tree solution. Leave the area like that as you don’t have to rinse it.

If the mold’s too much, soak a brush or sponge in tea tree oil. Then scrub the area with this.

That’s all my friend. Now you know how to remove mold off basement walls. Use any of them like we’ve shown and you’ll get your clean wall back.

If the mold is too much, it might be harmful to you. Then try to take help from professionals.

How To Prevent Mold On Basement Walls?

Molds can get back to your wall again. So preventing molds is much better than cleaning them again and again. So, it can save you time and money as well.

But how do you get mold off basement walls? Do you know the reasons? 

There are some special conditions for which molds can grow on your basement walls. Like, high moisture, humidity, drainage leak, etc. By solving them, then you can prevent mold.

Here’re some ways by which you can prevent molds on your basement walls.

  • Due to the leak in any pipes, mold growth can also cause mold growth. So, you always need to ensure the proper maintenance of them.
  • Due to poor ventilation, dampness, high humidity levels molds can grow. Use a Dehumidifier so that you can control humidity in the basement.
  • Because of the excess moisture in the air mold can grow in your walls. A Negative Air Pressure Machine will help you control the moisture of the air.
  • Use Anti Mold Paint And Primer to prevent mold. They’re available in the market. People like to use white paint. Don’t use white paint.
  • Remove any kind of materials which encourage the growth of mold from your basement walls.
  • Try to paint with waterproof paint.


Question: How do you kill mold off the basement ceiling?

Answer: Spray distilled vinegar on the molds in the ceilings with a spray bottle. And wait for some time to die of mold.

Question: Which mold is the worst black or white?

Answer: Between black and white, black mold is the most toxic. If you notice any of them anywhere in your house, try to remove them immediately.

Question: Can black mold kill you?

Answer: No, black mold won’t kill you but they’re harmful to your health. They can cause irritation, headache, rashes, etc.

Final Words

To protect your basement from molds, you should know how to clean mold off basement walls. We hope that I’ve helped you to know-how.

Here’s a tip for you. If you want to clean and prevent mold together then try using grapefruit seed extract. It’s very helpful in cleaning and preventing mold together.

Good Luck and enjoy your clean mold-free basement walls!