How To Pressure Wash Mold On Concrete

How To Pressure Wash Mold On Concrete


Mold is a common issue for homeowners and businesses, especially on concrete surfaces. However, when it comes to mold on concrete, a pressure washing can often be the most effective way to clean and remove it. Pressure washing is a great way to clean tough stains and mold from concrete surfaces, but it can be dangerous if done improperly. In this blog post, we will show you how to pressure wash mold on concrete safely and effectively, so you can get your exterior looking new again.


Step 1: Safety First

Before you begin, you should take safety precautions to avoid personal injury. This includes wearing rubber gloves, safety glasses, and slip-resistant shoes. You should also make sure that all electrical outlets and breakers are covered or out of reach of water and that all furniture and plants are moved away from the area you will be pressure washing.

Step 2: Remove Debris and Loose Dirt

Use a broom or a leaf blower to clear debris, dirt, and loose leaves from your concrete surface before you start pressure washing. This will also help to prevent clogging your equipment and extend the life of your spray nozzle.

Step 3: Choose the Right Pressure Washer 

Choosing the right pressure washer is important, for best results you'll need a machine that has a PSI of 3000 or higher. If you don't own a pressure washer, you can rent one from a hardware store or equipment rental store. Be sure to choose one that is powerful enough to complete the job and has appropriate attachments for washing concrete surfaces.

Step 4: Choose the Right Nozzle

To remove mold from concrete surfaces, you'll want to use a 25-degree nozzle. This will provide enough pressure to remove the mold without damaging your concrete or causing any surface pitting. Always keep at least a 12-inch distance between the nozzle and the concrete surface.

Step 5: Apply Cleaning Solution

Using a cleaning solution that is specifically designed for pressure washing can be very effective, but you can also make your own solution. Recipes for homemade cleaning solutions include bleach and water, baking soda and water, and vinegar and water. Be careful when using bleach as it can damage surrounding plants and foliage. Apply the solution and let it sit for ten to fifteen minutes before starting to power wash.



Mold on concrete surfaces can be unsightly, but with the right tools and techniques, it can be easily removed with pressure washing. If you don't feel comfortable doing it yourself, consider hiring a professional pressure washing service who can get the job done quickly and efficiently. Remember to take all precautions to ensure you're working safely, wear protective gear and choose the right pressure washer and nozzle for the job. For the best results, use a cleaning solution, and make sure you're applying it appropriately. By following these steps, you'll be able to pressure wash mold off your concrete surfaces in no time. If you need professional pressure washing services in Lake Mary, Fl, contact Simple Solutions Exterior Cleaning today for a free estimate.

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