On a concrete surface where the mold or mildew was exceptionally bad and the concrete was a light color even though the green was out there remained a brown stain.
How do you clean mold off concrete walls.
The recommended way to clean mold off concrete is to scrub it with detergent and water.
But even an inorganic material like concrete can become mildewed when spores begin to grow on dust dirt or old paint on its surface.
How to remove mold from concrete walls.
You will then proceed to clean the molded concrete walls after fixing the moisture issue.
If your basement has windows and doors open them a few minutes each day to allow air to circulate.
Concrete walls are not especially prone to mold and mildew which are words for the same thing.
Then adopt the following practices to keep it from returning.
Sunlight is a natural mold killer.
To get rid of mold on walls permanently remove it using the steps above.
Dry inside walls with a towel or rag let a cool breeze dry outside walls.
First put on safety gear such as goggles gloves and a respirator to protect yourself from the mold and fumes.
Clean mold off walls by scrubbing the area thoroughly with a bristle brush after about ten minutes to help to lift any residual mold out of the pores in the concrete.
You can see on the next picture that i ve treated the left side while the right side remains untreated where it is green and the treated side turned brown.
To kill mold on concrete basement walls or for an ideal diy mildew remover pour 3 hydrogen peroxide into a spray bottle saturate the walls with the peroxide then let it sit for up to 30 minutes.