How to get rid of black spots on your patio

How to get rid of black spots on your patio

How to remove black spots from your patio


If you’ve noticed stubborn black spots appearing on your patio, you’re not alone. Many homeowners struggle with this unsightly issue, which can make your outdoor space look dirty and uninviting. In this post, we’ll explore what black spots are, why they form, and the best ways to remove them, ensuring your patio looks as good as new.

What Are Black Spots on my patio and why do they appear?


Black spots on patios are typically caused by a type of lichen, which is a combination of algae and fungus. These hardy organisms thrive in moist environments and can attach themselves firmly to your patio slabs, making them difficult to remove. The black spots are not just a surface stain but a biological growth that penetrates into the pores of the stone, making them particularly resilient.

a patio and driveway before being cleaned

A patio just cleaned with patio cleaning Service

Why It’s Important to Remove Black Spots


Black spots are more than just an aesthetic problem. If left untreated, they can cause your patio to become slippery and potentially hazardous, especially in damp conditions. Additionally, they can degrade the quality of your patio slabs over time, leading to expensive repairs or replacements.

How to Remove Black Spots from Your Patio


Here are several methods you can use to tackle black spots on your patio:

  1. Pressure Washing

Pressure washing is one of the most effective ways to remove black spots. The high-pressure water can dislodge the lichen from the surface of the patio slabs. However, it’s essential to use the correct pressure settings to avoid damaging the stone. For best results, consider hiring a professional who has the experience and equipment to do the job safely and effectively.

  1. Patio Cleaners

There are various commercial patio cleaners designed specifically to tackle black spots. Products like Black Spot Remover are formulated to penetrate deep into the stone, breaking down the lichen and making it easier to wash away. Follow the manufacturer’s instructions carefully for the best results. some great products can be found in local DIY stores and if you want to try removing this yourself we would recommend Xtreme Patio Cleaner from SmartSeal

  1. Vinegar

For a old wives tail and a a more natural approach, you can use vinegar. You need to be super careful as vinegar is acetic acid and can damage some surfaces. For those who want to try this, test a small spot on a inconspicuous area first, if there is a reaction with the stone don’t use this method.  Mix equal parts of white vinegar and water in a spray bottle and apply it to the affected areas. Let it sit for about an hour before scrubbing the spots with a stiff brush. Rinse thoroughly with water. While vinegar is less harsh than some chemical cleaners, it may require several applications to achieve the desired results.

  1. Jeyes Fluid

Jeyes Fluid is another popular option for removing black spots. This powerful disinfectant can break down lichen effectively. Dilute the fluid as per the instructions and apply it to the black spots. Allow it to soak in before scrubbing with a brush and rinsing off. Be sure to wear protective gloves and follow all safety guidelines when using this product.

  1. Baking Soda and Water Paste

A paste made from baking soda and water can also be used to remove black spots. Apply the paste to the spots and let it sit for a few hours before scrubbing with a brush. This method is less aggressive and may require repeated treatments.

  1. Preventative Measures

Before & After Patio Cleaning & Blackspot Removal

a picture of a small patio befor cleaning and blackspot removal and one after cleaning and blackspot removal

To stop black spots from returning, consider these preventative measures:

Seal Your Patio: Applying a good quality patio sealant can create a protective barrier, making it more difficult for lichen to take hold.
Regular Cleaning: Keep your patio clean and free from debris. Regular sweeping and occasional washing can prevent the build-up of organic material that lichen feeds on.
Control Moisture: Ensure proper drainage to reduce moisture accumulation, which promotes the growth of lichen.


Does Jeyes Fluid Remove Black Spots?


Yes, Jeyes Fluid can be effective in removing black spots from your patio. It’s a strong disinfectant that can penetrate the lichen and help lift it from the stone surface.

Conclusion Guaranteed Results


Dealing with black spots can be a time-consuming and labour-intensive task. If you want to ensure your patio is spotless and professionally cleaned, consider using our patio and driveway cleaning services. Our expert team uses the latest techniques and equipment to remove black spots and other stubborn stains, leaving your patio looking like new whilst also making sure you have preventative measure in place you can manage yourself. Visit our Patio & Driveway Cleaning Services page to learn more and talk to our friendly team today.