How to Clean Mold From a Brick Patio


Mold on brick patios can occur from water standing in areas of the patio for long periods of time. Mold begins to spore once it finds a damp location and begins to multiply. Mold can be hazardous to your health and create conditions to your house that can become costly to repair. Catching the growth of mold in its early stages is important so that it can be removed immediately. Acting promptly to destroy mold can save you money as well as your health.

Things You'll Need

  • Household bleach
  • Water
  • Spray bottle
  • Pressure washer
  • Scrub brush
  • Eye protection
  • Locate the areas of mold on your brick patio. These areas are usually darker than the rest and in a place where water may stand.

  • Create a mixture using one part household bleach and three parts water. Place the mixture into a spray bottle.

  • Apply the bleach and water mixture to the brick patio. Let the mixture stand on the porch for five minutes. Do not let the mixture begin to evaporate. If the mixture begins to evaporate before five minutes, apply more. Be sure to wear eye protection while doing this.

  • Scrub the patio with a brush. The brush will help loosen the mold from the bricks so that it can be easily removed.

  • Rinse the brick patio with a pressure washer. The high pressure of the water will remove the mold from the bricks more effectively. Let dry.

Tips & Warnings

  • Using a pressure washer on a patio with bricks that are sand and have sand in the joints can scatter the sand. After using the pressure washer, let the patio dry and sweep the sand back into place.

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  • Photo Credit firewood image by Joy Fera from Bricks image by Lucid_Exposure from bottles of cleaning product. bleach. disinfectant. image by L. Shat from spray bottle nozzle image by Kathy Burns from Brush image by Yuriy Rozanov from water hose image by tomcat2170 from
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