Keep Your Concrete Mold Free

By HomeAdvisor

Updated October 18, 2016

Concrete walk

Unsightly concrete mold can detract from the charm of your patios, porches and walkways. Here’s how to to keep mold away from your home: 

You’ll need:

  • Water
  • Bleach
  • Bucket
  • Scrubbing brush
  • Rubber gloves

Remove the mold:

Step 1: Put on old or already-stained clothing and rubber gloves.

Step 2: Add 1 part bleach to 4 parts water and mix thoroughly.

Step 3: Dip your brush into the cleaner and scrub the moldy surfaces thoroughly.

Step 4: Let the area dry. 

Additional tips:

If you plan to paint, it’s a good idea to follow up your scrubbing with a coat of sealant to keep out moisture.

If your bleach mixture isn’t working, try a commercial-grade mold remover—available at most hardware stores.

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  1. Jacob Lee, September 14:

    I just started pressure cleaning and it really annoys me when I use the special pressure cleaning soap to bleach the white surfaces and the mold, grunge, and dirt start to grow back within six months. The customers are never satisfied after paying so much to keep their house looking decent. Is there anything made to apply to the surface of an area that has already been pressure cleaned so the mold etc. won’t grow back as fast. I mean if people have to pay more than $200, $300 for something it should last at least a year. I think.

  2. rawlon still, January 26:

    yes you can apply a concrete sealer once the mold has been removed.

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