Perhaps you are feeling motivated to apply a fresh coat of paint to a room. If the room has a mold problem, it can be tempting to think you can simply paint over it and make it go away. But what happens if you paint over mold?
If you paint over mold, you are masking the problem. Painting over mold does not kill it or prevent it from continuing to grow and will cause the paint to chip, bubble, and peel. A fresh coat of paint may look great, but without addressing the cause of the mold problem, the growth of mold will continue.
Mold is a type of fungi that can grow on both porous and non-porous surfaces. It thrives in damp, dark environments and can cause a variety of health problems, including respiratory problems, skin irritation, and headaches.
Not everyone suffers severe symptoms of mold exposure, but even mild symptoms can be a reason for concern.
Mold can also cause structural damage to your home, as it eats away at organic materials like wood and drywall. Luckily, there is a way to prevent the growth of mold before it starts.
But what about painting over it? Surely that will make it go away, right? Think again.
- What Happens If You Paint Over Mold?
- Will Painting Over Mold Kill It?
- What Does Mold Under Paint Look Like?
- Signs of Mold on Walls
- What Causes Mold on Walls in a House?
- How to Treat Mold on Walls Before Painting
- Does Mold-Killing Primer Really Work?
- Does Mold-Resistant Paint Work?
- Can You Paint Over Black Mold?
- Will Mold Bleed Through Paint?
- Final Thoughts
What Happens If You Paint Over Mold?
Painting over mold is not an effective way to address the problem. Mold is a type of fungus that thrives in moist, humid conditions. When mold spores come into contact with a surface that is damp, they will begin to grow and spread.
Painting over mold will not kill the spores or prevent them from continuing to grow. In fact, the paint will actually provide a moist, dark environment that is ideal for mold growth.
Paint can trap moisture against the surface of the wall, which will further encourage mold growth.
If you have a mold problem, it is best to address the source of the moisture and eliminate the conditions that are conducive to mold growth.
Only then should you repaint the affected area.
Will Painting Over Mold Kill It?
When it comes to mold, you can’t just paint over it and expect the problem to go away. In fact, painting over mold can actually make the problem worse. The reason for this is that mold needs two things to grow: moisture and organic matter.
By painting over mold, you’re only sealing in the moisture, providing the perfect environment for the mold to continue to grow
The paint will provide the mold with a new source of organic matter to feed on. As a result, painting over mold is not an effective way to kill it.
If you’re dealing with a mold problem, your best bet is to remove the affected materials and clean the area thoroughly with a mold or mildewcide cleaner before repainting.
What Does Mold Under Paint Look Like?
Mold under paint may appear as small dots or patches of color that are different than the surrounding paint. In some cases, it may also cause the paint to blister or peel. If you suspect that mold is growing under your paint, it’s important to have the area inspected by a mold remediation professional.
Left untreated, mold can cause significant damage to your home and may pose a health risk to you and your family.
Signs of Mold on Walls
There are several signs that indicate the presence of mold on walls. One is the appearance of black, green, white, or brown spots. Mold can also appear as fuzzy or hairy growths, and it may have a musty or unpleasant odor. In some cases, mold can cause staining or discoloration of walls.
If mold is present, walls may feel damp to the touch or appear to be sweating. In severe cases, mold may cause structural damage to walls.
If you suspect that mold is present, it is important to have the area inspected by a qualified professional.
Mold can cause a variety of health problems, so it is important to take prompt action if it is present in your home.
Symptoms of mold exposure can include but are not limited to:
- Lung irritation
- Itchy eyes and skin
- Runny nose
No amount of mold exposure is healthy, so it’s important to not just cover up the mold but to eliminate it and prevent it from coming back.
What Causes Mold on Walls in a House?
Mold grows best in damp, dark, and warm conditions, which is why it is often found in basements, closets, and bathrooms. Mold can also grow on walls if there is a water leak, a buildup of condensation, or if the walls are not properly sealed.
In order to prevent mold growth, it is important to keep the indoor humidity levels low by taking the following measures:
- Ventilate the home with open windows
- Use exhaust fans during and after bathing
- Clean up any water spills immediately
- Repair any water leaks
- Invest in a dehumidifier if you live in a humid climate
If you do find mold growing in your home, you should remove it as soon as possible to prevent the spread of spores.
How to Treat Mold on Walls Before Painting
Mold is a type of fungus that can grow on walls, especially if the walls are wet. If you have mold on your walls, it is important to treat it before painting. There are several cleaning solutions that can kill mold, and we will address them here.
Mold can be killed with a variety of solutions including bleach, vinegar, and baking soda. Boric acid can also be used to kill mold, and it is available in powder or liquid form.
Bleach Solution to Kill Mold
One way to kill mold is to use a bleach solution. To make a bleach solution, mix one cup of bleach with one gallon of water. Once the solution is mixed, use a sponge or cloth to apply it to the affected area. Allow the solution to sit for at least 10 minutes before wiping it away.
Be sure to open windows and doors to ventilate the area while you are applying the bleach solution.
Vinegar Solution to Kill Mold
Vinegar is an effective mold killer because it contains acetic acid, which can break down the cell walls of mold spores. To make a vinegar solution, simply mix equal parts vinegar and water in a spray bottle. Apply the solution to the affected area and let it sit for several hours.
Afterward, use a brush or sponge to scrub away the mold. For best results, repeat this process once a week until the mold is gone.
Baking Soda Solution to Kill Mold
Mold can be easily killed with a baking soda solution. To make this solution, simply mix together equal parts of water and baking soda. Then, apply the mixture to the affected area with a sponge or brush. Let it sit for a few minutes before wiping it away with a clean cloth.
Repeat this process as needed until the mold is gone. Baking soda is an inexpensive and effective way to keep your home clean and mold-free.
Borax Solution to Kill Mold
To make a borax solution, you will need 1 cup of borax per gallon of water. Mix the ingredients together and apply the solution to the affected areas with a brush or sprayer. Allow the solution to sit for 30 minutes before scrubbing the area. Rinse the area with clean water and allow it to dry.
You can also add any of the following essential oils to the solution for additional mold-killing power, as recommended by the International Journal of Occupational and Environmental Health:
- Eucalyptus oil
- Citrus oil
- Clove oil
- Tea tree oil
- Lavender oil
To do this, simply add 10 drops of oil per cup of borax. Some good options include tea tree oil, orange oil, or eucalyptus oil.
You can find these oils at most health food stores.
Use Mold-Killing Primer
A mold-killing primer contains a biocide that kills mold spores. When applied to surfaces like walls, floors, and ceilings, it creates a barrier that prevents mold from taking hold. In addition to being effective at preventing mold growth, a mold-killing primer is also easy to use and inexpensive.
A mold-resistance primer is especially useful in mold-prone areas such as bathrooms, kitchens, and laundry areas where excess moisture is common.
Applying a mold-killing primer to a clean surface that is mold free, you’re ensuring the mold will not ruin your new paint job.
As a result, it is an essential tool for any homeowner looking to protect their home from mold.
Apply Mold-Resistant Paint
Applying mold-resistant paint is an effective way to prevent mold growth in your home. Formulated with special ingredients that inhibit mold growth, mold-resistant paint creates a barrier that prevents spores from taking root and proliferating.
In addition, anti mold paint is also mildew-resistant, meaning it will help to keep your home fresh and clean for longer.
So if you’re looking for a way to safeguard your family’s health and keep your home looking its best, consider investing in mold-resistant paint.
Does Mold-Killing Primer Really Work?
Mold-killing primer can help to kill mold spores, but it will not prevent new mold from growing. So, if you have a mold issue, you will need to address the underlying moisture issue to truly solve the problem. Mold-killing primer can be a helpful tool in the fight against mold.
It can help to get rid of existing mold growth, and it can also make it more difficult for new mold to take hold.
If you are dealing with a mold problem, using a mold-killing primer can be a good way to buy yourself some time while you work on fixing the underlying moisture issue.
Does Mold-Resistant Paint Work?
Mold-resistant paint works by creating a barrier between the surface of the paint and the underlying surface. This barrier prevents mold spores from taking hold and growing. Additionally, mold-resistant paint contains an antimicrobial agent that kills mold spores that come into contact with the paint.
Not all mold-resistant paints are created equal, so it’s important to read the label carefully before purchasing.
Some paints only resist mold growth, while others actually prevent it. Be sure to choose a paint that will best suit your needs.
If you’re concerned about mold growth in your home, talk to your doctor or an allergist.
They can help you identify the source of the problem and recommend the best course of action.
Can You Paint Over Black Mold?
Simply painting over black mold will not solve the problem, the mold will continue to grow beneath the paint, and eventually, the paint will crack and peel. In addition, mold spores can be released into the air when the paint is disturbed, potentially causing health problems for people in the area.
As a result, it is best to remove black mold completely before attempting to repaint the affected surface.
Black mold is a type of fungus that can grow in damp, dark environments. Although it is not typically harmful to humans, it can cause respiratory problems and trigger allergies. Additionally, black mold can cause extensive damage to buildings, as it feeds on organic materials. For these reasons, it is important to remove black mold as soon as it is discovered. However,
Will Mold Bleed Through Paint?
In some cases, mold can indeed bleed through paint, staining the surface and making it difficult to remove. In other cases, however, painting over mold may provide a temporary fix, allowing you to clean the mold at a later date.
The best way to determine whether or not mold will bleed through paint is to consult with a professional.
They will be able to inspect the affected area and advise you on the best course of action.
In learning about what will happen if you paint over mold, we’ve learned that it is best to remove it as soon as possible and before painting.
Painting over mold will not get rid of it, and it may actually make the problem worse. The mold will continue to grow under the paint, and it will be harder to get rid of.
- International Journal of Occupational and Environmental Health
- Bob Vila
- Centers for Disease Control and Prevention (CDC)
- United States Environmental Protection Agency (EPA)
Trina Greenfield, Author
SmackDown Media LLC
About the Author:
Trina Greenfield, the owner of SmackDown Media LLC, is passionate about providing information to those interested in the air quality in and around their homes. Trina writes content about things she’s passionate about, such as safe, in-home air, educational platforms for children and adults, as well as all things family-related.