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Patio Clean XTREME Powerful Concentrated Cleaner for Black Spot, Algae & Lichen
Product Reviews
By cj

Have to agree with the other reviews noted. I have used this patio cleaner for the first time and was amazed at how quickly it reacted. I am in the process of re ordering to enable me to complete the rest of the paths and patio area.

By Robert Atkinson

I have to say guys what a great patio cleaner this is, I got to work on this project Saturday morning early and followed the instructions from a YouTube link And the results were great so thanks for all your help. Great service great products I personally would pay just a few pounds more to get the results Thanks again


Brilliant product. It cleaned the patio quickly and without needing a pressure washer.

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Patio Clean XTREME Powerful Concentrated Cleaner for Black Spot, Algae & Lichen

Powerful Concentrated PATIO CLEANER, Removes, Algae, Dirt & Blackspot. 5 litre treats 40 m² Sandstone, Natural Stone, All Paving Slabs

Visa Electron
Product Description

Powerful and Effective Patio Cleaner

Remove black spot from block paving, concrete or natural stone on patios. *Not recommended for use on Tarmac*

PatioClean Xtreme is a fast acting, high performance patio cleaning product, with four powerful active ingredients. PatioClean Xtreme offers the simple way to keep any patio clean often avoiding the need for pressure washing. 

  • Simply dilute 1:1 and apply to a wet surface by watering can or sprayer.
  • It is important that the patio remains wet for 1 hour. 
  • Then wash away with water from hose or pressure washer. For areas of heavy soiling, scrub into surface or re-apply.

PatioClean Xtreme is a powerful cleaning product, which cleans & helps to slow down future contamination.

For Removal of

  • Black Spot
  • Algae and Lichens
  • Moss
  • Surface Grime

5 litres of product will clean and treat approximately 40 mē of flagstone, natural stone, or block paved patios. Wear appropriate safety wear at all times. see technical page for more information.



  1. Sweep away loose debris & areas with a heavy build-up of dirt & grime.
  2. Wet surface area with water.
  3. Dilute Patio Clean Xtreme at a ratio of 1:1. If removing black spot, don't dilute (use neat).
  4. Apply product to surface using a watering can or sprayer.
  5. Make sure that surface area doesn't dry out before rinsing off.
  6. Leave on surface area for upto 60 minutes.
  7. Rinse area with water.

It is important the patio remains wet throughout during 60 minute period, as the product becomes inactive once dry. Most ingrained organic matter and grime will be removed after one application, but sometimes a second application may be required to remove all black and white spot algae.

Health & Safety

PatioClean Xtreme contains chlorine as an active ingredient and will stain fabrics and sensitive materials. Take care to avoid contact with fabrics during application. Toxic to aquatic life, wear protective gloves and goggles at all times. Patio Xtreme can cause skin burns, avoid contact with eyes. Keep out of the reach of children


Product FAQs

Q: Does the product have a shelf life, I purchased 3 tubs of this last year and only just got around to using it, but it has not made much difference. The tubs were not opened and were still in the same plastic bags they came into. Just wondered if the product needs to be used by a certain time after purchasing?

Justine Crawley

A: The product should be used within a year of manufacture. Please send some pictures to .Even outside of this period, we are suprised the patio cleaner is not cleaning your patio as expected.

Response from Alex

Q: Hi, Will the patio cleaner extreme runoff damage my artificial lawn?

William P

A: The patio cleaner xtreme will not have any adverse effects on artificial grass. As an added precaution, always rinse down areas surrounding the surfaces your are cleaning with the xtreme.

Response from Nick

Q: How do you prevent a treated area from drying out before the 60 minutes is up?

Elizabeth Francis

A: The product can be left for up to 60 minutes but will dry out in less time than this if the air temperature is quite warm. We would suggest applying the product and leaving for 20-30 minutes and while the product is dwelling on the surface agitating with a stiff brush or broom. If it starts to dry out quicker than expected, just apply more product to keep the area wet. This will always give a better cleaning outcome than just applying and rinsing off after leaving it wet on the surface for a period of time.

Response from Nick
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