How to Clean Moss Off Brick

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If you’re wondering how to clean moss off brick, try using a pressure washer with 500-1000 PSI, maintaining a proper angle. Or, opt for moss killer chemicals like iron sulfate, applying with care. Consider a wet/dry vacuum, using a stiff scrub brush for tough spots. Alternatively, use a bleach and water solution for effective removal. Baking soda is a natural option, great for ongoing moss prevention. Finish with a moss-inhibiting sealer. Professional help is advisable for safe and thorough cleaning. Ensure your property remains moss-free and well-maintained with these effective methods.

Method 1: Use a Pressure Washer for Moss Growth

If you have moss growth on your brick surfaces, consider using a pressure washer as an effective method for removal. When utilizing a pressure washer for moss removal on brick, it’s crucial to set the proper pressure to prevent damage. Begin at a lower setting, ideally between 500-1000 PSI, and adjust as necessary after testing a small inconspicuous area.

Maintain the nozzle at the correct angle and distance to avoid etching the brick surface. Work methodically, washing sections in vertical paths to prevent streaking. Use a stiff nylon brush attachment to scrub stubborn dirt from cracks and crevices. Before starting, prepare by protecting nearby plants and wearing appropriate gear. Choose a dry, wind-free day to prevent debris from spreading.

Sweep or wipe down the area beforehand to eliminate loose particles. With these precautions and a methodical approach, you can effectively and safely restore the appearance of your brick surfaces using a pressure washer.

Method 2: Apply Moss Killer Chemicals

To effectively eliminate moss from your brick surfaces, consider applying moss killer chemicals as a convenient and efficient solution. Moss killer chemicals, such as those containing iron sulfate, ammonium sulfate, and sodium carbonate, work by disrupting plant cell walls and dehydrating the moss, causing it to die. These products can be found at your local home improvement store.

To use them, simply mix the chemicals according to the directions, apply the mixture generously to the moss using a pump sprayer, and allow it to sit for the recommended time. The moss will begin to turn black as it dies. Afterward, rinse the area thoroughly with a hose. To remove the dead moss, use a stiff brush or a pressure washer to scrub the surface.

In cases of heavy moss growth, multiple applications may be necessary to completely eradicate the moss from your brick surfaces.

Method 3: Use a Wet/Dry Vacuum

Consider using a wet/dry vacuum to effectively remove moss from your brick surfaces, providing a thorough cleaning method that can help maintain the appearance of your bricks. When using the wet/dry vacuum, ensure you have the right attachments. The crevice tool is perfect for tight spots and mortar lines, while the brush nozzle helps loosen and agitate the moss as you vacuum. Move the vacuum slowly over the surface, making multiple passes in different directions to lift away all debris effectively.

For damp moss, start by using the squeegee attachment to remove excess moisture before using the brush nozzle to scrub and suction away remaining moss and dirt. Lightly rinsing the area with a low setting on a hose can help dislodge moss bits for easier vacuuming, but avoid over-saturating to prevent clogging.

After vacuuming, spot-clean any remaining moss by hand with a stiff brush, and ensure to clean the crevices thoroughly from different angles. Dispose of the debris carefully and rinse out the vacuum’s collection tank and hoses for efficient future use.

Method 4: Clean with a Stiff Scrub Brush

Scrub the moss vigorously with a stiff brush dipped in a mixture of warm water and mild detergent to effectively remove it from the brick surface. Make sure to use a scrub brush with stiff bristles designed for tough scrubbing action.

The porous nature of brick surfaces makes them prone to moss growth, but with some elbow grease, you can successfully scrub away the moss. Focus on areas where moss is present and apply pressure while scrubbing to dislodge it from the brick surface. If you encounter stubborn spots, a scraper can be used to help remove the moss.

After scrubbing, rinse the area thoroughly with clean water to wash away any loosened moss particles. Check for any remaining moss growth and repeat the scrubbing process as necessary. This cost-effective DIY method is ideal for small areas with light moss growth and can be easily accomplished with basic tools.

Method 5: Kill and Remove Moss with Bleach

For optimal results in removing moss from brick surfaces, ensure you handle bleach with caution and protect yourself by wearing appropriate safety gear. When using bleach to remove moss from brick, it’s crucial to follow handling precautions.

Mix bleach only with water and avoid combining it with other cleaners to prevent toxic fumes. Apply the diluted bleach solution generously on the moss growth, letting it sit for 15-20 minutes before scrubbing with a stiff nylon bristle brush. Vigorously scrub to work the bleach into the moss and bricks, avoiding metal bristle brushes.

Multiple applications may be necessary for thick moss. Rinse the bricks thoroughly with clean water after scrubbing to prevent bleach residue. Bleach is an effective moss removal solution, but ensure safe handling, avoid mixing chemicals, rinse adequately, and wear protective gear for successful moss removal.

Top Tips For Keeping Moss Off Brick

To prevent moss from growing on your brick surfaces, consider the following steps:

  • Maximize sunlight exposure
  • Adjust irrigation to avoid excessive moisture buildup
  • Use boiling water to kill moss spores
  • Apply vinegar or baking soda as natural moss deterrents.

Implementing these strategies can help keep moss at bay and maintain the appearance of your brick surfaces in good condition.


Exposing your brick patio to sunlight is a simple yet effective way to prevent moss growth on its surface. Moss thrives in dark and damp environments, making sunlight an excellent natural deterrent. By allowing sunlight to reach your brick patio, you can significantly reduce the chances of moss taking hold.


To prevent moss growth on your brick surface, closely monitor your irrigation system for leaks and adjust the spray as needed. Irrigation can soak certain areas and promote moss growth if not managed properly. Keep an eye on your irrigation to ensure it isn’t creating overly damp conditions that encourage moss growth.

If you notice leaks or areas that are overly saturated, you need to adjust the irrigation settings accordingly.

Boiling Water

For an eco-friendly solution to combat moss growth on your brick surfaces, consider using boiling water as a method to control and remove the moss effectively. Pouring boiling water onto the moss is a great way to control its growth on hardscape areas. The heat from the boiling water helps to kill the moss and prevent it from spreading further. However, to completely get rid of the moss, follow up with a good scrubbing to remove the growth physically.


Consider using a mixture of half water and half vinegar to effectively treat and kill moss on your brick surfaces. To remove moss, spray the vinegar and water solution onto the affected areas using a spray bottle. Let it sit for some time to penetrate the moss. Afterward, scrub the brick surface with a scrub brush to loosen the moss. For tougher moss or larger areas, you can opt for pressure washing.

Baking Soda

When tackling moss on brick surfaces, try using baking soda as an effective and natural alternative to vinegar. Pour the baking soda directly onto the moss and let it sit overnight. Once the baking soda has had time to work, brush the treated moss areas to remove it. Follow up with a thorough scrubbing to ensure the moss is completely removed from the brick surface.

Cost to Clean Moss Off Brick

The average cost of removing moss from brick ranges from $0.58 to $1.00 per square foot. When hiring pressure washing services to remove moss from brick walls, patio, or brick pavers, you can expect to incur additional costs.

In addition to the average cost per square foot, there’s typically a labor charge for the professional power washing service. This labor charge can range from $45 to $65 per hour, depending on the company you hire. Some companies may offer a flat fee ranging from $90 to $120 to pressure wash your patio, driveway, and walls.

It’s essential to consider both the average cost per square foot and the labor charge when budgeting for the removal of moss from your brick surfaces. Be sure to inquire about any additional costs or flat fees that the pressure washing service may charge for this type of job.

When Do I Call A Professional

Consider hiring a professional for assistance when you lack the necessary tools or time to safely and effectively remove moss from your brick surfaces. If you don’t own a pressure washer or the proper tools and equipment required for the job, it’s advisable to seek professional help.

Using the wrong chemicals or applying the incorrect pressure can’t only damage your brickwork but also pose health risks. By calling in a professional, you can avoid such issues and ensure a thorough and safe cleaning process.

Additionally, seeking project assistance from a professional can be time-saving, as they’re experienced in handling moss removal from brick surfaces efficiently. Remember, it’s better to invest in professional help to protect your brickwork and avoid potential damage or health hazards associated with improper cleaning techniques.

Frequently Asked Questions: How to Clean Moss Off Brick

How can I effectively clean moss off my brick walkway?

To clean brick which has been affected by moss growth, you can start by using a broom or brush to remove any loose debris. Then, mix equal parts of vinegar with water and load it into a sprayer, spray it on the moss and let it sit for 15 to 20 minutes before scrubbing to ensure moss and alga are easy to clean. 

Is it important to protect the surrounding plants while cleaning moss from brick?

Yes, it is crucial to protect the surrounding plants when dealing with moss growing on your brick surfaces. Use a broom to gently remove the moss without harming the plants.

What cleaning solution can I use to get rid of moss on brick?

A mixture of water and a mild cleaning solution, such as soap and water, can be effective in removing green moss from brick surfaces.

Should I leave the cleaning solution on the moss for a certain amount of time?

It is recommended to let the cleaning solution sit for 15 minutes on the affected area before scrubbing or rinsing with a garden hose.

Can I use high pressure to clean moss off brick?

While high pressure can be effective, it’s important to use caution to avoid damaging the brick surface. Alternatively, gentle scrubbing with a brush or broom is also recommended.

How often do I need to remove moss from brick surfaces?

To maintain the cleanliness and appearance of your brick surfaces, it’s advisable to clean moss off brick as soon as you notice it, ideally on a regular basis.

Are there specific products available for cleaning moss from brick?

You can find products at your local hardware or gardening store that are specifically designed for cleaning moss off brick. These products are designed to be effective yet gentle on the surface.

What precautions should I take when cleaning moss off brick?

When cleaning moss off brick, ensure to wear eye protection to avoid any debris from entering your eyes. Make sure to wear gloves and take your time scrubbing or pressure washing the brick surface. 

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Ira Njoroge

Hey, I’m Ira Njoroge, the founder of MySpaceAffair. Early on in my life, I had a passion to embark on a mission to create a cleaner, and more organized household. With a bachelor's degree in engineering after graduating from the University of Maryland in 2015 and seven years as a General Contractor and professional cleaner, on top of my DIY Enthusiasm. I saw the need for a reliable information source for homeowners. My passion, diligence, experience, and hired professionals confirms the reliability of all the advice given in My Space Affair and I hope to provide you all with reliable and thorough content!