- Like mold, mildew is a form of fungus that spreads via spores. However, unlike mold, mildew does not deteriorate the surface it is growing on but leaves unsightly stains on concrete patios. Furthermore, mildew will leave an unpleasant musty odor in the air that lingers for weeks. Removing mildew requires only a few inexpensive items that you can typically find in most homes.
- Moss is a plant that does not produce flowers and thrives in damp, dark locations. Even though moss itself does not damage concrete surfaces, the moisture that it traps underneath it can result in mold growth. The mold eats away at the surface and possible deteriorate the patio. At the very least, it leaves unsightly staining on the patio.
- You can remove fungus and lichens such as mildew and moss from your concrete patio using a few items. Mix 1 cup of oxygen bleach or chlorine bleach into 1 gallon of cool water to remove the mildew and moss from hard surfaces such as concrete. Another option is to use white vinegar at full strength or mixing 1/4 cup of trisodium phosphate with 1 gallon of water.
- You can remove mildew and moss with either natural, non-toxic items or harsh chemicals. No matter what method you choose, removing the mildew and moss is accomplished in the same manner. Use a scrub brush saturated in the cleaning solution of choice and scrub the mildew and moss off the concrete patio. After you have let the cleaning solution sit on the concrete for 10 to 15 minutes, rinse the patio clean with a water hose.
- To prevent the moss and mildew from returning, you must keep the moisture to a minimum and let sunlight shine on the patio. Sunlight keeps mold, mildew, algae and moss from growing. Furthermore, regularly clean the patio and keeping it free of debris reduces the chance of biological growth. When you notice moss and mildew growth, remove it as soon as possible to prevent it from spreading to other areas and causing damage to the patio.
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