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Revive your outdoor spaces with our Patio Black Spot Remover for Artificial Stone – the specialist cleaner designed to restore the natural colour and finish of manufactured and man-made surfaces.
Ideal for manufactured slabs such as Marshalls, Bradstone, Haddonstone, and precast patio slabs, this advanced formula also works brilliantly on concrete, porcelain, resin driveways, and composite decking. It penetrates deep into the surface to remove stubborn black stains, helping break down discolouration.
Patio Black Spot Remover for Paving slabs will also remove staining from bird droppings & regurgitated berry staining.
Available in two sizes:
4 Litres – treats up to 20m²
2 Litres – treats up to 10m²
Unlike harsh jet washing, which risks damaging the surface or dislodging pointing, our patio black spot remover for paving slabs gently lifts dirt and restores colour, making any follow-up cleaning with a pressure washer far more effective and less abrasive. The result is longer-lasting protection and beautifully refreshed stonework.
For year-round results, follow up with our Patio Black Spot Preventer. Applied annually, it helps maintain a spotless finish. Preventing staining and discolouration without the need for endless power washing. The Preventer should be applied 12 months after the initial removal treatment. This spray-and-leave treatment will also remove green algae within 5 days of application.
Safe for gardens, our formula is biodegradable and acid-free. The product can be rinsed into flower beds and lawns without harming plants or grass.
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 Guide: Based on patios around 3 years old. Older or heavily stained surfaces may require repeat applications. Always test on a small slab first to gauge coverage.
Using a 5-7 litre pump up garden sprayer. We recommend the sprayers made by hozelock which can be purchased on our website
Man-made concrete slabs manufactured by Marshalls, Bradstone or Haddonstone. It can also be used on Porcelain and any other type of artificial stone, including bricks
Patio Black Spot Preventer should be applied within 11-12 months of using the Patio Black Spot Remover for Artificial stone. The best time to apply the Preventer is in spring or early summer. The Preventer can 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.
White spots are very common on paving slabs which have not been cleaned in several years. They can be very stubborn to remove even when pressure washing. Apply Patio Black Spot Remover for Artificial Stone, wait for two hours and lightly pressure wash. When you pressure wash these white spots will be removed.
Yes, the Remover can be used on all types of man-made or pre-cast paving slabs.
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 growth that grows on your patio throughout the year. Stone can be porous and absorb some of this growth leaving behind stubborn stains. 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.
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.
The only difference in the Patio Black Spot Removers is the viscosity of the product. You will still get good results if you use the incorrect Remover for your stone.
We sell two types of sprayers on our website. A cost effective Hozelock 7 Litre sprayer or an IK 6 Sprayer which is the same sprayers as our site team use when visiting your property.
No, you do not dilute, the product it is applied neat to the stone.
Yes, Patio Black Spot Preventer should be diluted and applied to all areas 11-12 months after using Patio Black Spot Remover
Yes, you can re-apply the Remover if you have stubborn stains immediately after washing the first application off. Let the stone dry out before re-applying.
We recommend pressure washing after application to get the best results and remove any surface dirt on the surface.
Yes. If you spray the product directly onto your stone and avoid neat product coming into contact with plants and grass, no harm will be caused. The runoff, once diluted is fine to be washed into your flower beds and over the lawn.
Patio Black Spot Remover & Preventer is safe to use around Artificial Grass.
The Patio Black Spot Preventer is a spray and leave treatment therefore, no issues with using that next year near fish.
Our products have been on the market for over 14 years. Not once have we come across a patio we can't remove the spots from. We also offer the service, using the same products, and guarantee to remove all the spots. We carry out between 800-900 jobs annually. It’s not just about remove black spots, it’s about completely restoring the colour and reviving your out door spaces. Results last for years, not just months.
Yes, our products can be used on your house. We use this product on client's properties all the time. As you're treating a vertical surface, we would recommend applying the product using the same sprayer BUT applying 2-3 light applications (leaving 15-20 seconds in between treatments) so the product doesn't run off. If you apply too much at once, the product will run off and not be very effective.
The 2 Litre container is the cheapest way to test the product. You can get 10% off your first order by subscribing and delivery is free of charge. If you apply it correctly, it will restore the colour and remove all the stubborn staining. It may need more than one treatment if it's an old surface, but it will remove all the spots. In 12 years, we haven't come across a patio we can't remove all the spots from. We recommend concentrating on one slab first until you have removed all the spots before proceeding with the rest of the area.
Call 0800 500 3032 or send photos to info@pbsr.co.uk. We will respond within 24 hours. If you do not receive a response, we have not received your photos, please resend.
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.
