How to Remove Mold from a Concrete Patio

If the outside of your home has recently fallen victim to concrete patio mold, it is important to take steps to get rid of it. Follow the few simple steps below to quickly get your concrete patio mold-free.

Step 1 - Clean Your Concrete Patio

You will need to give your patio a thorough cleaning before proceeding to remove concrete patio mold. Begin by using a vacuum cleaner to remove any caked-on dust deposits from your patio, making sure to use a mini vac or feather duster to remove dust from any crevices or difficult-to-reach areas. You can also use a wet/dry vac in lieu of a vacuum cleaner, as these devices typically work well with concrete surfaces.

Once the dust has been purged from your concrete patio, produce a homemade cleaning solution of mild liquid soap and warm water. After your cleaning solution has taken shape, apply it to your patio, allow it to set in for several minutes and give the patio a vigorous scrubbing with a hard-bristled scrub brush. Should you encounter any exceptionally stubborn stains, try using a wire brush in place of a scrub brush. Once you patio has been successfully cleaned, use a garden hose to rinse away any remaining traces of your homemade cleaning solution.

Step 2 - Apply Your Bleach Solution

Now that you've removed all the dirt, dust and debris from your patio, you're ready to begin cleaning off the concrete patio mold. Begin this step by producing a mixture of 1 cup of bleach and 1 gallon of warm water inside of a clean bucket. When working with bleach, it is recommended that you wear a paper breathing mask and a pair of rubber gloves to protect yourself from overpowering fumes and skin irritation. Also, if you feel yourself becoming lightheaded or weak against the fumes at any point during the mold removal process, make sure to take a break far away from your work area.

Now, apply your bleach solution to any areas plagued by concrete patio mold and, after allowing it to set in for 10 to 15 minutes, proceed to vigorously scrub the mold deposits with a hard-bristled scrub brush. If the mold proves unyielding, you may need to incorporate the aid of a wire brush.

Step 3 - Apply Your Finishing Touches

Having gotten rid of all the concrete patio mold, use a garden hose to rinse off your bleach solution. Once your concrete patio has been vigorously rinsed, you'll need to dry it with a clean cloth or paper towels. Moisture is among the leading causes of mold formation, so when performing this step, make a point of being as thorough as possible. Alternatively, if you own a wet/dry vac, this handy tool can be used to instantly suck up any remaining moisture.