I watched a few of my neighbors use a solution of diluted bleach which is effective.
Mold mildew cleaner concrete.
Borax bleach vinegar and ammonia all have the capacity to kill mold on concrete surfaces.
Customers sing the praises of this mold and mildew stain remover from rmr 86.
The all purpose masonry and concrete cleaner come to you inform of powder concentrate well packed in 3 2 pounds container.
Green mold or mildew started growing on practically every surface from concrete to stone to benches and trees.
For outdoor use look for a bleach free mold and mildew remover.
Step 1 choose a cleaning agent to treat the mold.
It works on nearly any surface including wood fiberglass concrete and tile and it promises to remove unsightly stains in 15 seconds without the need for any scrubbing except in the case of the toughest stains.
Even though this solution is mild make certain to wear safety goggles rubber gloves and have plenty of ventilation.
The cleaner safely removes all sorts of substances including dirt grime and stains caused by oil mold or even mildew restoring all your masonry and concrete surfaces.
I needed to learn how to clean mold or mildew from concrete and stone.
Add the bleach to the water first then the detergent.
Combining the two creates a lethal gas.
Be sure to scrub aggressively to get down into the pores of the concrete.
Let the detergent or bleach solution soak in for a while to ensure that all the mold is killed.
How to clean mold from concrete the best solution is to scrub and clean the affected areas with a mold killing detergent or a simple solution of household bleach and water.
Any organic material adjacent to the moldy area can be.
Pour the solution onto the concrete patio concentrating on areas with mildew.
You can use a mold killing detergent diluted bleach or a commercial cleaner made specifically for killing mold 1 x research source don t mix anything other than water with bleach as certain cleaning agents can produce highly toxic fumes when mixed with bleach 2 x research source for a diluted bleach solution mix three parts water with one step 2 remove affected items.
Never mix bleach with ammonia.
Diluted liquid chlorine bleach removes mold from concrete brick stucco and other outdoor materials but the run off may damage.