Home & Garden Cleaning & Laundry

How to Get Rid of Black Mold on Cement Blocks

By Home & Garden Last updated Monday, June/03/2024

1). Protect yourself from the black mold during the removal process by wearing a pair of rubber gloves and an N-95 respirator. Wear safety goggles without vent holes to prevent possible mold spores from coming in contact with your eyes.
2). Mist the surface mold with water. This will keep the amount of spores released in the air during the mold removal process to a minimum. Wipe the mold off the cement blocks with a rag.
3). Fill a 5-gallon bucket with 2 gallons warm water. Add 1 cup trisodium phosphate and mix with a long-handled spoon. Alternatively, use 2 cups of oxygen bleach instead of the trisodium phosphate.
4). Dip a scrub brush in the mixture and scrub the cement blocks. Continue scrubbing the blocks until you have removed the mold.
5). Let the mixture sit on the concrete blocks for 10 to 15 minutes before rinsing the blocks clean with a water hose. Repeat the process if needed.

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