99% of patio staining is organic, caused by moss, algae, lichen, and everyday dirt. No sealer can prevent spores carried by the wind or dirt from settling on stone surfaces. These are simply natural aspects of having an outdoor space.
When a patio is first installed, it looks fresh, clean, and vibrant. However, that crisp finish can fade over time as stubborn black spots begin to appear, taking over your patio and garden stonework.
These marks are caused by black lichen spores, which are carried by the wind and rain, often from surrounding trees and settle into the stone’s surface, feeding on its natural minerals.
Once these spores have settled, black spots are incredibly resilient and difficult to remove. Even high-powered pressure washing is often ineffective. So what can you do without replacing the entire patio?

Patio Black Spot Removal Company
How to remove black spots from your patio
One such special product exists to break down and eliminate black lichen and algae. The Patio Black Spot Removal Company's flagship product has been specially formulated to restore the natural colour and appearance of the stone, regardless of age, providing a cost-effective alternative for homeowners who might otherwise be considering a full patio replacement instead.
- Costs around £39.99 for 2 litres
- 2 litres covers up to 10m²
- Free UK delivery on orders over £50
- Shelf life up to 18 months when stored properly
- No scrubbing needed, just spray and rinse
- Effective on black spots, algae, moss and fungi
Explore patio black spot remover.

Patio Black Spot Removal Company
What a patio black spot remover does
- Removes black lichen spots from natural stone
- Restores the original colour of your patio
- Biodegradable and acid-free
- Ready to use, no mixing needed
- Works on black spots, green algae, moss, and white fungi
- Apply with a garden sprayer, leave for 2 hours, then rinse
- 2 litres covers up to 10m², 4 litres covers up to 20m²
- Pair with annual preventer to stop future growth
Available online and in some garden centres.
Apply once, then use the preventer annually
The Patio Black Spot Preventer is recommended as an annual treatment to maintain a like-new finish. It helps prevent the return of black lichen and clears away green algae within a few days.
Instead of relying on abrasive techniques, the Patio Black Spot Removal System provides a gentler, more effective solution. When combined with the annual Preventer treatment, the system helps preserve the beauty of natural stone while significantly reducing the need for harsh cleaning methods.
So much better than pressure washing - especially for sandstone
While pressure washing may seem like a quick fix, it can cause serious damage, especially to sandstone patios.
Sandstone is a sedimentary stone, made up of naturally formed layers. High-pressure water can cause these layers to delaminate, leading to surface peeling, cracking, and eventual breakage.
Moreover, pressure washing often erodes the pointing between slabs, leaving the patio uneven and increasing the likelihood of costly repairs.
See the results for yourself
The Patio Black Spot Removal Company showcases its full range of products at major garden shows across the UK, including the prestigious RHS Chelsea Flower Show.

Patio Black Spot Removal Company
Make sure you try restoration before replacement, you might be amazed at the results
Before opting for a full replacement, it’s worth considering restoration. With the right approach, many older patios can be rejuvenated at a fraction of the cost. However, proper restoration requires safe, specialist products and techniques to avoid damaging the stone.
Explore the Patio Black Spot Removal Company's entire range.
For more information, customers are encouraged to contact the team on 0800 500 3032 or visit the official website at www.patioblackspotremoval.com.