On it s own concrete does not provide a sufficient food source for fungal growth.
Mold for concrete wall.
Mold growth on a concrete wall due to excess humidity.
Reasons to avoid bleach.
Dirty concrete surfaces like patios that don t dry out rapidly because it s in a shaded area can be the perfect area for mold to grow.
Saturate the walls with the peroxide then let it sit for up to 30 minutes.
To kill mold on concrete basement walls or for an ideal diy mildew remover pour 3 hydrogen peroxide into a spray bottle.
Depending on the size and severity of the mold deposits this process may take anywhere from several minutes to several hours to successfully complete.
You could also try installing an interior footing drain to keep the water from the wall.
Unfortunately this is not especially helpful because like almost anywhere in a building dust quickly accumulates on the surface.
But even an inorganic material like concrete can become mildewed when spores begin to grow on dust dirt or old paint on its surface.
Mold on concrete walls black fungi on concrete walls mostly comes from moisture hitting and being absorbed into the wall.
The recommended way to clean mold off concrete is to scrub it with detergent and water.
After the mold has been scrubbed off your concrete walls allow your mold remover to sit for 15 to 20 minutes before proceeding to dry your walls.
Concrete walls are not especially prone to mold and mildew which are words for the same thing.
It also can produce a strong earthy musty smell.