Will Bleach Kill Concrete Mold

Bleach can’t penetrate mold that’s growing on surfaces like concrete, wood, drywall and unsealed tile. Unfortunately, using bleach on some materials kills the mold above the surface but the mold continues to grow underneath, which can cause it to return and grow faster.

Can you use bleach to kill mold on concrete?

Liquid Laundry Detergent and Household Bleach. One of the most common and effective means of removing black or green mold from concrete is bleach. Bleach will kill mold down to the root, cleaning it off concrete while also preventing it from returning.

What happens if you put bleach on concrete?

Bleach is safe to use on concrete. When applied to concrete, bleach does not harm the sturdy material. However, it does remove spots and unwanted matter from the surface, such as mildew and moss. … When using bleach, work in a well-ventilated area because the fumes from bleach can be overwhelming.