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How To Remove Black Mold From Concrete Basement Walls

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How Basement Mold Is Removed | This Old House

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Mold Is Annoying But Treatable

Household mold is a common basement invader, particularly in the presence of sump pumps or water damage. Even exterior walls and air conditioners arent impermeable to mold infestation.

Thats why its vital to establish how to eliminate basement mold. You just need the appropriate removal methods and cleaning products. This will make the process straightforward and easy.

Youre probably among many homeowners whove just discovered basement mold but dont know where to start. Ignoring the issue will only make it worse leading to further problems.

Sharing this post will enlighten others on this topic. Feel free to like it, leave feedback, and share your opinions on the subject matter.

Types Of Basement Mold

Various types of mold will infest your basement. While they are all hideous, not all of them are toxic to humans.

Molds can be divided into two categories:

  • Allergenic
  • Mycotoxin/black

Allergenic molds usually pose no health risk unless you are extremely sensitive to molds or asthmatic. Black molds, on the other hand, produce a toxic chemical called mycotoxins and are particularly harmful to humans and pets.

Here are the common types of molds that can infest your basement.


Aspergillus is one of the most common household mold species. There are different types of Aspergillus, and most of them thrive well indoors. Some of the Aspergillus molds are allergenic, but some are mycotoxin and should be removed by a specialist, especially if it is something like black mold.

This fungus is dark green and found on damp walls, ceilings, and even furniture. It flourishes in humid environments, but can also grow in areas that are dry with high levels of humidity or condensation.

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How To Remove Mold From Concrete

The good news is removing black mold on concrete surfaces is fairly easy and straightforward. The main difficulty in removing the mold is the potential health hazards. Mold reproduces through spores released into the air, making it necessary to take precaution when cleaning the surface. Although some household molds will only irritate allergies, black mold can be very dangerous and cause severe health conditions. Removing black mold is just like any other form, it just requires extra care. Its recommended that you start with the minimum protective gear, such as a mask and heavy-duty gloves. It also requires an N-95 respirator to protect you from spores and goggles. This gear is recommended by the EPA when cleaning mold and will protect you from any spores released into the air.

How To Remove Mold From Concrete Floors In 5 Easy Steps

Mold In Your Basement

Last Updated on January 4, 2021 by Diana Rodriguez-Zaba

Mold is a common problem in most households, but it can also make you sick. Thats why its important to remove mold from concrete in your home.

Mold, just like mildew, is a growth that pops up in damp or shaded areas. That said, can mold grow on a concrete floor? Yes. Concrete floors, with their bumpy and porous texture, is a great place for mold to thrive. If you see mold start to take hold of your concrete surfaces whether on a basement wall, or patio you need to get rid of it immediately. Otherwise, it will spread and be difficult to remove.

Keep reading to find out the best ways to remove mold from concrete.

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What You Need To Do First

Before you get started with removing mold from concrete, you need to gather the right materials.

You will need:

  • Rubber Gloves
  • Dust Mask

If youre working with vinegar to clean the mold, then wearing rubber gloves wont be as much of a concern. We still recommend that you wear old clothing that you dont mind getting damaged.

Some people are allergic to mold. They can get very sick when they come into contact with it. If this is you, then wear a dust mask and avoid getting it on your skin or in your eyes.

A Warning: Do not use metal brushes or steel wool to clean concrete. You should also avoid mixing bleach with other household cleaners. This could create toxic fumes.

What Is White Mold And Is It Dangerous

  • The inflorescences dissolve in fungus.
  • Discoloration usually occurs on concrete and brick, while mold grows on organic materials such as wood and drywall.
  • White mold is a living organism and a rash is simply a deposit of salt.
  • Discoloration is not harmful.
  • White mold has a distinctive odor, but a rash does not.

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Black Mold In Basement

Are you worried that you might have black mold in basement? Do you notice a musty smell? Is there ugly slime on the walls, cinder blocks or ceiling? Has your basement flooded or is the humidity level high? Are there signs something is damaging your drywall? The chances are that you have mold in your basement. Even when you suspect there is fungi you should not take this lightly. Get a move on, because now its the time to get rid of black mold once and for all!

How To Eliminate Mold And Mildew In A Basement

Black Basement Mold Stain Removal Aurora, IL

Understand where this stench is coming from and get rid of it for good with this four-part plan. The musty smell in your basement, caused by the unfettered growth of mold and mildew, is also potential damage to the fabric in your home. Look for leaks in your basement that can lead to mold and mildew growth. Use a dehumidifier to reduce the humidity to less than 60 percent. Remove existing mold or mold spores. Neutralize musty odors in your basement.

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How To Remove Mold From Concrete: 7 Effective Ways

With its light color and unprecedented durability, concrete is a great material of choice for patios, driveways, walks, and basement walls and floors. And while concrete is one of the strongest raw construction materials, its porous consistency makes it susceptible to mold, which takes root in the moisture trapped in those tiny nooks and crannies.

Once its taken root, it grows and spreads, marring your beautiful patio or driveway with black or green splotches that arent only unsightly but also present a potentially serious health hazard.

Knowing how to remove mold from concrete effectively is key to maintaining the aesthetics and safety of the concrete in and around your home. The best way to remove mold from concrete is to apply a bleach solution, laundry detergent, and water to the affected area, scrub it with a brush, and rinse it clean with a sponge indoors, or hose or power washer if outside.

In this article, well examine why mold forms on concrete, to begin with, review the best methods for cleaning mold off of concrete, and discuss strategies for ensuring the mold doesnt return.

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Tips For Preventing Mold Growth

The best way to fight mold is to prevent it from growing in the first place. Keep your bathrooms, kitchen, basement, storage rooms and other areas of your home well ventilated. Humidity levels in your home should be no higher than 50 percent. Here are some things you can do to reduce the moisture and keep your home mold-free.

  • Fix leaky faucets, showers or household appliances that use water
  • Vent bathrooms, clothes dryers and other moisture-generating sources to the outside
  • Use air conditioners and de-humidifiers
  • Use exhaust fans whenever cooking, cleaning and bathing and run ventilation fans for at least 10 minutes after taking a shower or finishing cooking.
  • Fix leaks in your home’s roof or walls. Clean out gutters to prevent leaking.
  • Clean bathrooms and dry completely
  • Remove or replace carpets in rooms like bathrooms or basements that have a lot of moisture
  • Check windows for condensation and keep them clean and dry

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Does Vinegar Kill Mold On Concrete

Yes, it does. You can use vinegar to kill mold because it is acidic. White vinegar is recommended for killing mold because scientific studies have shown that it can eliminate up to 82 % of mold spores. It is also advantageous to use vinegar because it is known to have disinfecting properties that will kill the viruses or bacteria on surfaces. You can use vinegar to do away with mold on hard nonporous and porous surfaces since it can seep into surfaces. When dealing with vinegar, be sure to use personal protective gear to prevent it from getting into contact with your body because it irritates. Use a liquid sprayer for a smoother application on the affected area and dry it before cleaning it.

Removing Mold From Drywall Or Ceilings

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Drywall and ceiling materials are porous, so the mold you see on the surface most likely has threaded its way below the surface, too. Spray the surface with the homemade bleach-based mold remover until damp but not dripping, and let the area air-dry.

Then, respray it, wipe away any residue with a fresh cloth, and reapply a final light round of spray. Let this dry overnight, and the spray will continue killing mold as it dries.

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How Do You Prevent Mold From Growing On Concrete

The best way to solve a mold problem on concrete is to prevent it from happening in the first place. One way to do this is by eliminating the key element mold needs to grow, moisture.

For concrete patios, driveways, and walks, cut back foliage that creates shady areas on a driveway or walk that never see the sun.

Also, check for cracks in the pavement that can collect water and cause mold growth. Fill these cracks using a concrete repair product.

For areas where this isnt possible, consider treating the concrete with an acrylic sealer designed for outdoor use. This prevents moisture from penetrating the driveway or walk, eliminating the environment mold needs to thrive.

For indoor areas, fix leaky pipes that are causing mold growth. For basements that flood, consider using a product such as Drylok to prevent moisture from entering the basement when it rains.

If that isnt an option, a dehumidifier is also an excellent means of keeping the humidity level in a basement in check, preventing mold growth. Remove materials that can get wet and breed mold growth, such as cardboard, wood, cloth furnishing, and area rugs.

Also, check the areas around the foundation of the home. If the earth is not properly graded to cause water to flow away from the house when it rains, grading may be required. Keep leaves and other debris from piling up around the foundation, which can trap water and direct it through the foundation and into the basement.

Natural Ways To Remove Basement Mold

There are numerous different ways to get rid of mold, but some chemicals used in the process have the potential to be harmful. Below are a few steps to remove mold naturally.

Make sure the area in which the mold is growing is dry. Mold thrives on moisture, so fixing any leaks, cleaning up water, and ensuring that theres no humidity in the area should be your first step in removing mold.

After ensuring that the area in which the mold was growing is dry and has plenty of air, your next step should be cleaning the air.

Mold spores can be transported through your HVAC system or air ducts in your home. Because of this, it may be best to use an air purifier to ensure that no mold spores end up in other areas of your basement or anywhere else in your home.

Create a mold cleaning solution to remove and clean the area the mold was on and around.

Fortunately, theres a wide variety of natural solutions that will successfully remove mold.

Below are several solutions that will remove mold while not spreading harmful chemicals in your home.

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How To Get Rid Of Basement Mold

There are numerous ways to get rid of mold in your home and basement. However, before you start clearing out the mold, make sure you fix the real problem as the mold growth is only a symptom of an underlying problem. This could mean fixing a leak, ensuring that the basement has proper ventilation, and checking that any standing water has dried.

Here are several methods you can use to remove mold from your home and basement.

Removing Mold From Tile Stone Concrete And Cement

Black Mold Remediation (Mold Removal) Frankfort, IL Basement

Use the homemade bleach-based mold remover on hard surfaces. Spray the bleach-based mold remover until the area is saturated but not dripping wet. Scrub it with a rag, scouring pad, or brush and wipe away the residue. Lightly respray the area, wait 15 minutes, and then wipe the area with a fresh cloth dampened with water. Let the area dry overnight and inspect it the next day. Repeat if needed.

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What To Do If You Find Mold On Your Walls

If you suspect that you have mold on the walls or walls of your home, there are several ways to solve this problem. First, remove all mold residue, including drywall, insulation, subfloor, and carpet. Then you can use commercially available products containing ammonia or bleach on any hard, moldy surface.

How To Stop Mold Growth In Your Basement

How to prevent mold growth in the basement? Minimize the humidity. To prevent mold growth, the first step is to remove any residual moisture. Check your receptacle. Choose your floor wisely. Consider outdoor waterproofing methods. Clean your basement. Insulate your space. Keep plants upright. Be careful not to store wood under it. Ventilate the equipment well. Remove stale air.

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Does Mildew Turn Into Mold

This starts with the formation of a fine, powdery, black or white mold on the outside of a water mattress, or a sticky deposit on the inside of the mattress. The mold becomes a mold and the mold continues to spread and absorb the cushion of water and other materials. It can also put your family’s health at risk.

Summary: How To Clean Concrete Basement Walls

How Do I Get Rid Of Mold In My Basement

Concrete is a fantastic building material thats been used all over the world for centuries. Its strong, durable, affordable, easy to work with and easy to clean. Simply mix cement, sand and stone with water and youve got concrete. Adjusting the ratio of ingredients will alter the concretes properties which makes it a versatile building material. In residential construction, forms are built, rebar is installed and concrete is poured to create a solid wall of concrete. Generally these walls are only in the basement but some homes use them all over the house. Luckily, concrete is easy to clean, however, because its porous, it can absorb dirt and mold. In this article well explain how to clean concrete basement walls.

The best ways to clean concrete basement walls are tri-sodium phosphate, vinegar, cleansers, soap and water or hydrogen peroxide. Some products are multipurpose, acting as a cleanser, fungicide, and bactericide all in one. They wont harm the concrete, but they do break down tough stains like oil and grime.

Well also review the most common types of stains youll find on your concrete basement walls and how to clean them. This is important because the way to best clean a concrete wall depends a lot on the type of stain your cleaning. There isnt a one size fits all solution for every type of stain.

If you have any questions or comments about how to clean concrete walls in a basement Email any time.

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Where Youll Find It Growing

Mold on your basement or exterior walls occurs when water vapor in the air meets a cold surface and turns the vapor into a liquid. Bathrooms and laundry rooms develop mold because theyre typically very humid. Other humid areas include the walls and ceiling near humidifiers and any room with a hot tub or jacuzzi improperly installed indoors.

Mold also grows where there is a water leak. Places like the cupboards under sinks are prone to mold. Once a pipe has leaked, theres a good chance mold will grow unnoticed within the wall until the problem requires expert removal.

About Woodard Cleaning & Restoration

Woodard Cleaning & Restoration was founded in 1946 by Earl and Nancy Woodard. Located in St. Louis, Missouri, Woodard services the greater metro area . Woodard is proud to serve as the preferred provider for cleaning & restoration services. Our cleaning services include carpet, hard surface, furniture, and rug cleaning for both residential and commercial properties. We also provide water, fire, board-up, storm and smoke restoration services for residential and commercial clients. For information or questions submit a form online or call us at 314-227-3932.

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Preventing A Reoccurrence Of Mold

As important as it is to clean mold on basement walls, it is equally important to take steps to keep the mold from returning. As mentioned, most mold problems in basements are due to a lack of ventilation and the presence of high humidity. You can alleviate the humidity in your basement by using a dehumidifier. These units can be found for under $300. I recommend a model that will self-empty, having pump-out capability or by continuously draining through a garden hose that can be directed down a drain. Here is more on selecting the right dehumidifier.

Another preventative step you can take is to primer/paint the concrete walls with a mold resistant product after the removal process. An excellent choice is . These mold resistant products will range in price from $30-$50 per gallon. Most of these mold resistant primers and paints contain antimicrobial ingredients that help prevent mold re-growth in areas of high moisture content. Warning I never recommend attempting to cover, seal, or paint over mold in any situation.

The goal is not to kill the mold but to completely remove it.

Consider the following example: If you have a skunk living under your front porch, you have a problem. If you kill the skunk you havent solved your problem, you have just created a different problem. Now you have a dead skunk under your porch. The same goes for mold. Dont be happy with just killing it it needs to be removed.

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