How to Remove or Kill Mold on Drywall

Learn How to Kill Mold on Drywall

how to remove mold on drywallIf you are learning how to kill mold on drywall, I hope that this is a great resource for you. Personally, I have had a lot of experience removing mold on drywall. Back in 2005-2010, I thought that buying properties in bad neighborhoods and fixing them up for resale was a good idea. Some of the properties I bought were in really bad condition. Because I had to save money, I did a lot of the work myself. When I didn’t know how to do something, I would call and talk to contractors and figure out from them the best methods for fixing these problems. I had a lot of problems with mold on drywall and cement. I quickly became an expert at cleaning drywall mold, and I would like to teach you how to remove mold from drywall so that it does not come back.

Step One – Find out the Extent of the Damage of Drywall Mold

Before you can know how to remove mold from drywall, you need to know the extent of the damage. (The last thing you want to do, is discover more mold after you are done treating the old mold.) I like to start by taking a brush and gently getting as much of the mold off as I can. If it starts to take off pieces of the drywall, that’s okay because it is important to know the extent of damage to the drywall and you are going to have to replace it anyway.

My biggest concern is that the mold is on the opposite side of the drywall. Once it gets to the other side, this means that you’re going to have to pull it out and replace it. It is a pain to do, but it is definitely necessary. Once you assess the damage, you will have a better knowledge of removing mold from drywall and how to kill mold on drywall. You need to make sure that you get rid of all the mold because mold can spread very quickly if there is a high level of humidity and a food source (your wall).

Step Number Two – Treating the Mold on Drywall

how to get rid of mold on drywallAfter you assess the mold, you will determine whether it is just a superficial mold or if it is going to require a lot more work. If it is just superficial, it is pretty easy to take care of. The first thing you need to do is scrape off all the mold. The second thing you need to do is to spray it lightly with a solution of a diluted bleach 1:16 ratio. Allow this to sit for a few minutes and then wipe it up. Allowing the bleach to sit will help to kill the mildew and the spores. After you wipe everything clean, you should not be able to see any more mold on the drywall.

If you have a problem with mildew in grout or in caulking, you can also take care of it with a bleach spray, or you can clean it with a bleach pen, or a steam cleaner. Use whatever you have available or what you think will work best for your own individual situation.

Step Three – Find out What Caused the Problem and How to Keep It from Happening Again

The third step is to find out why you developed mold in the first place. Do you have a leak in your plumbing, or possibly your foundation? Do you have a high level of humidity in your home? If it was caused by a high level of humidity, you can fix this simply by using a dehumidifier, a furnace, or even an air conditioner. Out of the three, a dehumidifier probably works best at lowering the humidity because it is designed specifically for that task. Using your furnace will also lower the humidity to dry out the air. An air conditioner condenses the air, and removes the moisture from it the same time.

One method to treat your mold problem is by using a primer called ‘Kills’. You can take this primer over your drywall or cement. The primer doesn’t really kill the mold, you have to do that yourself before you paint. But the primer is designed to be toxic to mold. It is a good strategy to paint with this primer to help prevent mold from coming back.

Treat the Mold Problem by Installing Mold Resistant Drywall

You can also install mold resistant drywall. If you are going to be replacing the drywall in your kitchen or bathroom anyway, it might be worth it to use the mold resistant drywall. Mold resistant drywall is a little bit more expensive, but if you think that you’re going to have another mold problem within the next 5 to 7 years, then I would recommend that you use it. You can also use the mold resistant primer to cover your existing drywall, if you don’t want to go through the trouble of replacing it. The good part about mold resistant drywall is that it is resistant to mold from both the front and the back side of the drywall which is actually really important.

How Do You Remove Mold from Wet Drywall?

If your drywall is wet, do not attempt to remove mold from it. The first thing you need to do is to try to dry it off. You can do this by using a fan to dry out the area, by opening the window on a sunny day, or by renting a dehumidifier and trying to pull all the moisture out of the air. Do not attempt to clean drywall that is wet because it could be easily damaged. Also, try to get the drywall dry as fast as you can so you won’t have to replace it, and so that mold won’t grow on the other side of the wall.

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7 Responses to How to Remove or Kill Mold on Drywall

  1. spencer says:

    Do you have any specific questions that are still not answered. Let me know and I will be happy to answer them for you. Thanks!

  2. I like your writing style genuinely loving this web site. “Slow and steady wins the race.” by Robert Lloyd.

  3. Trinidad Woodworth says:

    Just what I was looking for, your post is very enlightening, thank you for posting.

  4. Priya Rawat says:

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  5. Robt Caylor says:

    Superb post. Remember to keep up the first rate performance.

  6. Lynn Mahaffee says:

    I have a question:
    We have discovered the mold and mildew is present due to a leak in the roof. The roofing company thus far has been willing to fix the problem. However, I need to know what to do now before they are able to fix it in entirety (maybe a month away). They have temporarily plugged the leak and will fix that part in a few days. So, no further damage will be done. But…..there is damage now. In the unfinished basement it is relatively easy……scrub and then clorox the visible mold and remove moldy insulation. However, it is also upstairs in the living area. The mold is not showing on the drywall at this time but the drywall is warped and seperating from the mantal on one side and the window on the other. My question is this: Obviously, it will need to be removed and the insulation replaced. But temporarily, how do I treat the drywall to remove smell and prevent the spreading of the mold until it is fixed?
    Thank you for your help!

  7. craig says:

    I respectfully disagree with you concerning the use of bleach to clean mold in sheetrock. Sheetrock is porous and no mold remediation expert will suggest that using bleach, no matter the strength, for cleaning such a surface. The best way (if not the only way) to clean mold in sheetrock is complete removal of the sheetrock. Anything else is merely a temporary fix.

    By the way, you really suggest drying out wet and moldy drywall?

    Are you going to answer Lynn’s question?

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