Use a power washer or simply wash with a brush and clear water.
How to clean mold concrete basement walls.
Assuming the floor is concrete spray the area with a borax water solution.
Occasionally the mold growth will leave behind a stain even after a vigorous cleaning.
A better way to clean mold on basement walls is to use a one to one solution of white vinegar and water.
To remove mold from hard surface use a solution of water and bleach to scrub the affected areas.
Next pour the newly formed cleaning solution into an empty spray bottle and proceed to vigorously apply it to your mold laden basement walls.
To kill mold on concrete basement walls or for an ideal diy mildew remover pour 3 hydrogen peroxide into a spray bottle.
The vinegar will not only penetrate the concrete better it will also act as a disinfectant.
Vinegar will kill 82 of mold species.
If the mold is powdery you should also wear a mask to avoid inhaling spores.
Begin this step by combining warm water with a mild brand of soap.
Before you can begin the mold removal process you must give your concrete basement walls a thorough cleaning.
Step 1 clean your basement walls.
Before cleaning mold in a basement remove and clean any contaminated items such as boxes furniture or clothing.
Use a shop vac to remove the water as it accumulates on the floor of the basement.
Small amounts of water can also be absorbed with a sponge or towel and wrung into a bucket for removal.
The staining is an aesthetic rather than a health issue.
Saturate the walls with the peroxide then let it sit for up to 30 minutes.
Alternatively for porous surfaces try a mixture of liquid dish detergent water and bleach.
Scrub the vinegar solution into the concrete using a scrub brush with stiff bristles.
Saturate the walls with the peroxide then let it sit for up to 30 minutes.
Avoid prolonged moisture exposure in the basement to avoid mold growth.