How To Remove Flagstone Mildew

Flagstones are usually used in landscaping. It is usually just flat stones or rocks. Because it makes landscaping more elegant, these are generally used for walkways, fences, patios and sometimes even roofs. It is also used to make tombstones. Because it is frequently exposed, molds and mildew can often be found in nooks and crannies of the stones. Mildew is derived from molds. Not only do they emit a repulsive odor, but also look unpleasant because of the black and white layers it creates. Removing mildew is not a hard task.

Here’s an easy way to remove flagstone mildew.

  • Prepare the necessary materials. The materials needed to remove flagstone mildew are bleach or vinegar, baking soda, a soft bristle brush and a spray bottle. These materials can be bought in your grocery store. You can opt to use any of the cleaning products. If you wish to use an eco-friendly solution, you can use vinegar. Vinegar is as effective as bleach and will not harm your plants the same manner as bleach will. Make sure to fill your spray bottle with equal amounts of water and vinegar or bleach. You can also choose to not put water but have just vinegar instead. If you decide to have a harsher solution, use muriatic acid and water. Muriatic acid is available in supermarkets or hardware stores. The solution should be composed of two gallons of water mixed with one quart of muriatic acid.
  • Spray the area. You can try hosing the area with hard water before spaying it with your solution. Hosing with hard water will lessen the mildew. Using the spray bottle filled with your vinegar-water solution, spray the area with mildew. Let it sit for about fifteen minutes.
  • Scrub the area. After at least fifteen minutes, remove the mildew using your soft bristle brush. Using a garden hose, rinse off the mildew. If you opt to use baking soda, pour boiling water on the mildewed area, add baking soda and scrub using a soft bristle brush. If you are going to use the muriatic-water solution, scrub the affected area with the solution.
  • Rinse with water. Make sure that there is no more solution on your flagstone. Acid can damage your flagstone if it is not rinsed off properly. After rinsing, scrub the area with your bleach-water solution. Make sure that the area is clean. Rinse with water again.
  • Allow to dry. Let the area dry for at least twenty four hours. You can opt to coat the area with a flagstone sealer, which is available in home or hardware stores. Applying a sealer can prevent the flagstone from future molds and mildews. It will also be easier to clean in the future.

Before using your bleach or any acidic solution, make sure to test it on an area. Doing this will avoid possible damage to your flagstone. It is important to remember that although harsher solutions may seem more effective, it can damage your surrounding plants. Try using organic solutions such as your vinegar-water solution. For general cleaning, boiling or hard water is best. Avoid adding chemicals. Continuously adding chemicals can damage your flagstone.


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