How do I clean black mold off sheetrock and concrete?

Natasha Herrin
by Natasha Herrin
It's everywhere.
  14 answers
  • Gra29188215 Gra29188215 on Jul 06, 2018

    Try Krud Cutter.

    • Gra29188215 Gra29188215 on Jul 06, 2018

      Try Krud Kutter. Works really well on almost any

      stain, grease, food, etc.

  • Alison Savill Alison Savill on Jul 06, 2018

    Pure white vinegar and it might sound funny but put tubs with cat litter in the room there moisture grabbers clean wall with the vinegar wear a mask so you don’t breath it in it keeps it at bay air the room

  • Kathywappett Kathywappett on Jul 07, 2018

    I was to believe that bleach is the only thing that kills the spores so they don’t come back. I’ve used bleach and water in a spray bottle years ago and had no problem since.


    We used bleach and then covered with Kilz. Mold hasn't come back yet.

  • S S on Jul 07, 2018

    tear out the affected sheet rock and replace it, use muriatic acid on the concrete. krudcutter is great (i love it for a lot of things) for making it look nice, but it can't do any thing about the roots of the mold inside.

  • Deana Thaxton Samms Deana Thaxton Samms on Jul 07, 2018

    First of all, just because it is black and mold, doesn't mean that it's "black mold." Bleach is always the best to kill mold (1:10 solution -- 1 part bleach to 9 parts water), but it is almost impossible to do with sheet rock. If it has been there a while, you will need to replace it.

  • Louise Louise on Jul 07, 2018

    try pouring hydrogen peroxide on it

  • One word: Vinegar!

    If you have a serious infestation, you need to call in the pros. Who knows what is lurking behind those walls. Mold can cause serious health issues, especially in the elderly, children, pets - birds can die, and anyone with respiratory problems.

    There are agencies out there to help with the cost, your local HUD office is a great place to start.

  • Trina Koltay Trina Koltay on Jul 07, 2018

    The basement at work had it on walls and I mixed water and tea tree oil in a spray bottle and it helped lighten most of it.

  • Stacey Reynolds Stacey Reynolds on Jul 08, 2018

    You will have to remove the sheetrock with mold on it and replace that part. Mold will grow inside it so trying to clean the surface will not work. It will just come right back through and very quickly! As for the concrete.. You can clean that.the best thing to use is Lysol. It actually kills the microorganisms that keeps the mold growing. Alot of people say use bleach. I have learned recently that while bleach may take the black away but the microorganisms is still there. You can also buy zep(microorganism killer) or others but they are pricey but the Lysol is cheaper and kills the real culprit that keeps it going. Hope this helps!

  • Barbara Barbara on Jul 08, 2018

    You will have to remove all of the sheetrock. Make sure that you wear a respirator type mask, gloves,and ha e good ventilation to the outside. Concrobium is the product that will kill mold. You can get it at HD, or Lowes. Bleach will only lighten the color, not kill it. The other products will only mask it. The very best way is to have it professionally removed. However, that is very expensive. Check with your house insurance, maybe they will cover it (crossed fingers). Good luck, be safe

    • B. Enne B. Enne on Jul 30, 2018

      I agree with Concrobium. Bleach is not the best for mould spores, and is hard on the lungs.

      Spray the Concrobium to deactivate the spores BEFORE removing anything, otherwise you will just spread it around.

      If it is really everywhere as you say, Concrobium also has a fogger for whole room use. You may need to rent a fogger. Otherwise, buy the kind in a spray bottle or the gallon size and put in in a cheap spray bottle, and spray everything.

      If the mould has penetrated the drywall you will have to remove the stained parts, probably 4 feet up to remove the whole sheet.

  • Umma Umma on Jul 08, 2018

    You can't clean it off of sheet rock successfully. It has to be to torn out (wear a high-quality mask!) and find out where you can dispose of sheet rock/dry wall safely.

    When you re-rock the wall, use blue board or another water and moisture resistant board.

    Cleaning the mold off of concrete takes a good quality mold killer and some serious elbow grease. Be certain to ventilate the area. Getting everyone out of the house, especially kids, people with breathing issues, and even pets, and again, wear a high quality mask - and goggles, too.

    Good luck!

  • Isolde Smith Isolde Smith on Jul 09, 2018

    Have you addressed the moisture issue? There is no point in doing anything until that problem is taken care of. Good luck dear.

  • You need vinegar to kill the mold.