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Transform your patio with our Patio Black Spot Remover for Natural Stone – the only solution developed specifically to tackle stubborn black stains, helping break down discolouration while restoring the natural beauty of your garden stonework.
Patio Black Spot Remover can be used on Indian Sandstone, York Stone, Limestone, Travertine (including Portland and Bath Stone), and all other types of natural stone. This powerful treatment removes stubborn black staining from patios. It works deep into the surface to revive the original colour and texture of your stone, leaving your patio looking fresh and renewed after pressure washing.
Available in two sizes:
4 Litres – treats up to 20m²
2 Litres – treats up to 10m²
Unlike aggressive pressure washing, which can damage the stone surface and dislodge pointing, our patio black spot remover for natural stone gently lifts dirt and grime, making any follow-up cleaning effortless. It helps prolong the life of your stonework while delivering results that standard patio cleaners cannot match.
To keep your stone looking its best year after year, follow up with our Patio Black Spot Preventer. Applied annually, it will prevent staining and discolouration and remove green algae within days without the need for power washing. The Preventer should be applied 12 months after the initial removal process.
Safe, biodegradable, and acid-free, our formula can be rinsed into flower beds or lawns without harming plants, making it both effective and environmentally responsible.
Patio Black Spot Remover is safe to use around pets. As a precaution, we recommend keeping pets off the area whilst applying the product. Once the Remover has been washed off the surface, it’s instantly safe for pets to walk on the area.
Coverage Tip: The coverage rate is based on a patio around 3 years old. Older or heavily stained stone may require additional treatments. Always test on a trial slab first to gauge results for your surface.
Using a 5-7 litre pump up garden sprayer. We recommend the sprayers made by hozelock and IK. You can purchase these sprayers on our website.
Patio Black Spot Preventer should be applied within 11-12 months of using the Patio Black Spot Remover. The best time to apply Patio Black Spot Preventer is in spring. The Preventer can also be used on brand new stone within 6 months of installation.
Yes, the Remover can be used on stone of any age. On older stone, re-treating will be required as the stains become harder to remove as they’ve had longer to establish themselves. Carry out a trial slab first to check how many applications are required BEFORE proceeding with the rest of the area.
Yes, the Remover can be used on Limestone, sandstone, Yorkstone & granite including any other types of natural stone.
White spots can be removed with using a high-powered pressure washer. You must be careful using high-powered pressure washers because they can remove the finish on paving slabs and delaminate natural sandstones. A light pressure wash will remove these white spots after applying Patio Black Spot Remover, without the risk of damaging your stone.
Spots on your patio can be stubborn and be present not just on the surface but within the stone. Some spots are unable to be removed from natural stone with just a pressure washer.
Pressure washing becomes less effective over time due to different types of organisms that land on your stone throughout the year. Some organism’s grow during wet periods, such as algae. Most patios in the United Kingdom suffer from algae, lichen and moss at different times of the year. This can cause stubborn staining on your patio that pressure washing will not remove. When you pressure wash stone, it opens the pores of the stone allowing organic growth to grow quicker. You’ll find 4-5 years after laying a patio that pressure washing becomes less effective.
If you have stubborn black spots on your patio, you should use Patio Black Spot Remover as soon as possible. The longer you leave these stains, the harder they can be to remove. Patio Black Spot Remover will work on stone of any age. Re-treating can be required. Do not use when the temperature is less than five degrees.
1. Apply with a pump up garden sprayer. 2. Leave for 2 hours. 3. Wash off with a pressure washer. 4. Re-treat any stubborn staining. 5. Apply Patio Black Spot Preventer 11-12 months later.
A pump up garden sprayer. These can be purchased on our website.
1. Use neat – DO NOT DILUTE – Pour our solution into a pneumatic garden sprayer. (A ‘Hozelock’ 5L or 7L sprayer is recommended. Do not use a hand sprayer.) Pressurise the sprayer.
2. Apply the product to a dry surface, as a fine mist and saturate the surface.
3. If you have not used the product before. Treat just one slab first. The older the stone, the more treatments it will require. The product will remove every single last spot. By completing one slab first, this will give you an indication of how many treatments your stone will require. Only when you have removed all the black spots from the first slab, continue with the rest of the area.
4. DO NOT EXCEED THE MAXIMUM RECOMMENDED COVERAGE OF 5 SQM PER EACH 1L OF PRODUCT.
5. Once applied, allow to cure for a period of 2 hours.
6. Remove using a pressure washer, ideally with a minimum flow of 7 litres per minute. Use the fan jet attachment to sweep the dirt away. Other attachments such as circular spinning attachments will not give you the best results.
7. Any black spots that remain, simply retreat (when the surface is dry) allow to cure for 1 hour then wash off.
8. Repeat this process until no black spots remain.
9. Apply the Patio Black Spot Preventer 12 months later. Do not seal the patio.
Exceeding the recommended coverage rate will reduce the performance of this product. Coverage will vary depending on surface porosity and profile, e.g when treating sloping areas or riven surface, beware of surface run off and retreat as necessary to ensure correct coverage.
The Patio Black Spot Remover is quickly and readily biodegradable. The effluent if washed into soil, flower beds or lawn will breakdown rapidly. This product will not affect surrounding lawns or foliage in diluted state. Keep animals and unprotected persons off the treated area until dry.
Ensure product doesn’t come into contact with skin, eyes or respiratory tract. In the event product does comes into direct contact with the body, immediately rinse with water. Ensure this product does not come into contact with fabrics or furnishings.
