How to Clean Concrete Walls


If you have a home with a basement, you may have walls that are made of concrete. Concrete is very prone to stains because of how porous it is. If a stain happens to get onto the concrete walls, it may become very difficult to get out it you wait too long. Therefore, it is imperative that you clean up a concrete wall stain as soon as you see it.

Things You'll Need

  • 5-gallon bucket
  • Water
  • Mild soap
  • Nonmetallic brush
  • Ammonia
  • Kitty litter
  • Duct tape
  • Plastic bag
  • Pressure washer
  • Fill a 5-gallon bucket with cold water and add a cup of mild soap (dish washing soap or laundry detergent will work). Dip the brush into the soapy water and scrub the stain until it disappears.

  • Empty the bucket and refill with cold water. Add 1/2 cup of ammonia to the water and clean the stain with the brush using the ammonia solution. Scrub the stain until it disappears.

  • Mix kitty litter with water to form a poultice. Spread the poultice over the stain. Cover the poultice with a plastic bag (this will keep the poultice on the wall) and duct tape the bag to the wall. Allow the poultice to draw out the stain for a few days and then brush off the dry kitty litter.

  • Clear away all furniture and objects next to the concrete wall and spray the area with a pressure washer. This should only be used in the event of a stain that won't come out using other methods.

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  • Photo Credit concrete image by grafiker from
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