Patio Black Spot Remover Plus 5L
5 Litre 20 Litre

Patio Black Spot Remover Plus

Rated 5.00 out of 5 based on 14 customer ratings
(14 customer reviews)

Patio Black Spot Remover Plus is a very powerful cleaning agent which specifically targets and removes lichen black spot. This product is 5X stronger than normal patio cleaners & black spot removers. Excellent for cleaning Indian sandstones and Yorkshire sandstone flags. 5 star reviews on Trustpilot and Amazon on this product. Also available in an economical 20 litre deal – Free rapid delivery to mainland UK addresses.

£38.99 – £98.99
£38.99 – £98.99
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Product details

Patio black spot remover for natural stone, block paver & concrete.

Anyone who has tried black lichen removal will know it is very difficult to remove. It does not respond to pressure washing alone as it is heavily bonded and deeply ingrained. General patio cleaners need not apply here! Most cheap patio cleaners are just simply too weak to remove black spot. They may have some effect but usually do not remove all black lichens. 

By using our Black Spot Remover Plus it is a case of doing the job right with a full strength product! This black spot remover comes in 5 litre and 20 litre bundle deal with free delivery to UK mainland addresses.

Patio Black Spot Remover Plus is applied neat using a low pressure sprayer, watering can or straight from the container. Patio Black Spot Remover Plus is highly effective at cleaning all garden stonework including walls and natural stone patios. Apply it to pavers, slabs, block paving and driveways for effect. Simply rinse the area after treatment and pressure wash the surface for best results.

We highly recommend our Patio Black Spot Remover Plus as the best product for black spot removal on the market. This is an excellent patio black lichen remover for all natural stone. It provides fantastic results on all difficult to remove organic marks and stains. It can be used on external tiles, concrete, block paving and brickwork.

If your Indian sandstone patio is suffering from black spot contamination you may have tried to pressure wash it with little or no effect. Our black spot remover will remove black spot from both Indian sandstone and also Yorkshire sandstone flags. Patio Black Spot Remover Plus is a fantastic professional strength product. Apply the product neat and leave it to dwell and work its magic.

Patio Black Spot Remover Plus is designed to be applied neat with a dwell time, the dwell time can be specifically determined by carrying out a test patch. Typically, this will be no less than an hour and you can always extend dwell times or repeat for severe infestations.

Black spot removal is always possible but you must follow the instructions! Carrying out a small test patch will provide a timing to be repeated when treating the rest of the area.

Once you have removed black spot lichens you can prevent its return by using Floorseal Black Spot Preventer Plus.

Please see further instructions on ‘Directions of Use’ tab and FAQs.

If you require help choosing a sealer or cleaning product please feel free to contact us on (01484) 686270. You can email us at [email protected].

Available in a 5 litre container and an economic 20 litre deal with free delivery to UK mainland addresses.

There are some shipping charges to Northern Ireland and the Highlands and Islands.

Orders made before 12.30pm are despatched that day – deliveries will made within 24-48 hours of despatch (on working days only).

Directions of use

  • Use a suitable PPE – Safety mask, goggles and gloves.
  • Please wear old clothes or suitable overalls as the product can discolour organic fibres.
  • Always carry out a test patch to assess suitability and dwell time in an inconspicuous area.
  • If the product is not suitable do not continue to apply the product.
  • Lightly pre wet the area.
  • Apply the product neat.
  • Use the test patch to gauge dwell time required for your patio.
  • Do not overspray product onto adjacent lawns or plants.
  • If you think the product will encounter adjacent lawns and plant life pre-wet them with clean water.
  • Apply to the surface using a low-pressure sprayer, watering can or neat from the container.
  • Always keep the surface visibly wet by over spraying with more product.
  • Periodically agitate the area treated with a stiff brush.
  • Rinse away the product with a hose pipe.
  • After treatment pressure wash the area for best results.
  • Repeat if required and/or extend the dwell time for heavy contaminations.
  • Do not allow the product to travel into garden ponds containing fish or other aquatic life etc.
  • Safe for children, pets & wildlife once dry.

Coverage

  • 5 litres of product will cover approximately 20m2 in a single application.

Delivery charges

To view our delivery charges please CLICK HERE

DELIVERY TIMESCALES

  1. Shipping is based on a free standard delivery service to UK mainland. Items ordered before 12.30pm will be shipped that day.
  2. It is not a guaranteed next day shipping service but most orders arrive within 24-48 hours (working days only).
  3. Our couriers do not deliver on a Saturday or Sunday other than by special additional arrangement.
  4. For the Highlands and Islands (including Northern Ireland) our shipping times will be slower.
  5. Delivery is free except to the Scottish Highlands, Northern Ireland & other UK offshore Islands.

Reviews

  1. Rated 5 out of 5

    Steven H –

    Totally transformed my Twenty year old Patio. I thought I would have one last try to remove the black spots before giving up and replacing the paving completely but thanks to this product My Patio looks great and it has saved me a fortune not having to buy a new one. Well worth the money because cheaper products simply didn’t work.

  2. Rated 5 out of 5

    Susan Reeve –

    Haven’t used the item yet but if it’s as good as their customer service then I’ll be very pleased. Helpful staff and quick free delivery.

    • graeme –

      Thanks for the review and the time taken to send one.

  3. Rated 5 out of 5

    Dilys Grindley –

    We used this product this morning on our patio,the results were amazing.Flags returned to their original colour.
    Very pleased.Next day delivery great.

    • graeme –

      Thank-you for such a positive review!

  4. Rated 5 out of 5

    Tony E –

    My review is almost identical to that of Steven H. Our terrace has been down around twenty years and due to the blackspot on the sandstone slabs and surrounding wall we were thinking about a complete overhaul. Decided that it was worth the £120 to see if the chemical would make a difference. Delivery came the next day after ordering. Absolutely incredible results. Wall is back to the original bathstone colour and Indian sandstone paving stones are blackspot free. Have some great before/after photos which we’ve been sending out to all our family. Can recommend 100%. Many thanks.

    • graeme –

      Thank-you for such a great review – it is appreciated, glad you liked the product.

  5. Rated 5 out of 5

    Olivia Heywood –

    Unbelievably good. I have never had a sandstone terrace before and did not know what to do about the black marks that had appeared. Scrubbing and pressure washer did not shift them but this amazing product cleared them all up in under one hour – so quick and easy to use and brilliant results. I am so grateful and want everyone who has the same issue to know about it!

    • graeme –

      Thank-you for a great review it is appreciated.

  6. Rated 5 out of 5

    Paul Derbyshire –

    First of all, let me thank-you for the excellent service. Ordered on Sunday night (in effect, Monday morning); received the order at 9.30 on Tuesday morning. I made a phone call query about the product, and was given a very comprehensive and helpful answer. Thank-you once again.
    The product has now been used and is excellent. The vast majority of black spot was removed with the first application. A few stubborn spots went with the second “spot” applicaion. Overall an excellent product.

    • graeme –

      Thank-you for such a positive review and taking the time out to write it.

  7. Rated 5 out of 5

    David Woodward –

    Rang the number and talked to someone about my black dots and lack of colour on my Indian sandstones great help did what he told me to do what a result and transformation so pleased with this product it’s looks like it did 4 years ago all the black dots have gone and the colours looks amazing used a high power jet wash at the end 10 out of 10👍ps got the grandson to fine mist it when it was getting dry for 1 hour when I was drinking wine in the sunshine 👌 5 litres =18×10 foot patio area out of a watering can

  8. Rated 5 out of 5

    Peter murphy –

    My review is the same as everyone else’s. Needed the 25l size for the amount of stone I had and could not believe the results. I had used a pressure spray every couple of years but was never happy with the outcome. They now look exactly how they did when I laud them in 2003. Thank you.

  9. Rated 5 out of 5

    Dean –

    Bought some floor seal black dot remover what a product just received another order for my second patio as I was a little sceptical so only ordered 5 ltr if your after your patio to look like the day it was laid this is the product and on top of this the service is first class got some patio sealer as well not used yet if it’s as good as the remover happy days

  10. Rated 5 out of 5

    Adrian Walter –

    Like everyone else I found this product to be really effective at removing black spots from my Indian sandstone. Sadly I spent 30% more for 25% less of a competitive product before I tried this, and when I did I wasn’t confident enough to order 25litres so I’m going to have to buy some more!
    One thing to note is that the instructions are correct when they say not to apply it too sparingly. We had to do a second application in some areas where it was obviously sprayed on too thinly. The other thing is, don’t wear anything you want to keep, unless you want that 60’s tie-dyed look afterwards!

  11. Rated 5 out of 5

    June –

    So pleased with this product. Read the other reviews and was encouraged and I wasn’t disappointed. It’s taken away all the black spot and brought the patio back to life. Going to use the sealer and colour intensifier as well to finish the job properly

  12. Rated 5 out of 5

    Mrs Daines –

    WOW.. This product is simply amazing. If I could give 6 stars out of 5 I would. My patio looks like the day it was laid.

    I was so keen to use I forgot to wet the surface first, but I could see instantly the lichens disappear.

    Amazing product. I only bought 5 litres which was a little shy of what I needed but you can see how dramatically different the untreated slabs are. I’ll be ordering more.

  13. Rated 5 out of 5

    Scott Robson –

    My Indian sandstone patio was laid about 5-6 years ago, and it has had a number of pressure washes during that time, but it was looking dull and dirty and full of black spot, which pressure washing alone doesn’t shift. I found Floorseal and thought I’d give it a go.

    For a start, Graeme at Floorseal was super helpful with what I needed in terms of products and what quantity I should buy, and he was full of help and advice on the application of the products too. And the products are delivered by Fedex next day when purchased direct from Floorseal.

    I started off with the Black Spot Remover, which is truly an amazing product. The instruction on the pack and the website are really good, but I also spoke to Graeme at Floorseal, who talked me through what to expect, which prepared me really well (I’m no pro at this sort of stuff, by any means!).

    I used a low pressure sprayer to apply (bought on Amazon for about £10), which was super easy to use. I bought the 25L quantity for about 50 sq m of patio and had about 4L left when finished. I’m know I could’ve used less product, but as this was the first time I’ve used it, I aired on the side of caution and applied more than I needed to make sure of the coverage. Also, the 25L option is cheaper than 3x 5L tubs, so it was a no brainer for me to go for the 25L option.

    The basic process was to moisten the patio, then liberally apply the Black Spot Remover. You can see it starting to work immediately, but Graeme at Floorseal was very specific to ensure a decent “dwell” time, i.e. how long the product is kept on the patio. It is important to keep the patio moist during this time, by either topping up with more product or spraying lightly with water. I chose to apply more product to keep the patio moist, which is probably why I went through so much product, but I don’t regret that at all, as the results are phenomenal.

    After the product has “dwelled” for about 60 mins, I washed it off with a hose and then followed up with a pressure wash. The results were unbelievable, with all black spot gone!

    I followed up with the Indian Sandstone Sealer & Colour Intensifer treatment which is a fantastic product too, which I have also reviewed.

    I’m so happy with the finish and it’s brought my 5-6 year old patio back to life. I can’t recommend Floorseal’s products and company more. Thank you Floorseal.

  14. Rated 5 out of 5

    Barbara –

    27 Aug 2019. Have tried other cleaners for my block pavers and concrete paving slaps with very little effect, so wasn’t expecting very much but WOW! The block paving path was not just dirty but full of black spot and it came up like brand new…all clean and sparkly! The concrete slabbed patio was 40+ years ex council pavement slabs….with lichen, paint spots, moss and really black in places. Pressure washer took some off, but this cleaner has made it look cleaner than it’s ever been, and uniform in colour!

    I’m SO pleased and can’t thank Graeme for all his help and advice too. Totally recommend Floorseal products

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Frequently asked questions

Yes, apply the product neat and allow to dwell for at least an hour – extend the dwell time if required. Repeat the process if required.

A build up that has taken 10 years to form will be more difficult to remove that a single years growth!

The black spot remover takes up to an hour to start to work. It can be less if the contamination is light.

Extend the dwell time if required – a severe infestation may require extended dwell times. You may wish to repeat the process.

Approximately 20m2 from a 5 litre container. The product can also be bought in an economic 2o litre bundle deal.

They are lichens and they are almost impossible to remove by jet washing.

Add more product so the surface is visibly wet.

Dwell time is very important – Extend the dwell time up to 4 hours, keep the product/surface wet and agitate periodically.

A single very long dwell time can be more effective than trying to repeat the process on multiple occasions with shorter dwell times.

You have not carried out a test patch! By using a test patch you have the information to remove the black spot.

  • You may have exceeded the coverage rate of no more than 20m2 per 5 litre container.
  • Keep the surface wet, the product is to be applied so the surface is visibly wet.
  • You will know when the product is working as black spot often starts to turn grey or white.
  • Dwell time is critical – extend up to 4 hours if required.
  • Do not let the product dry out.
  • Repeat the process for very heavy build ups.

All black spot removers, patio cleaners, moss & algae removers or weed killers have the potential to damage surrounding plants.

The way you apply a black spot remover is important in reducing any potential impact to surrounding plants – see below!

When wetting out the area to be treated also wet out the surrounding bedding pants and lawns. The product will be diluted if it mists over these areas and loses its strength.

The way a black spot is neutralised is by adding more water to dilute. It has no residual effect when dry. It is a contact product and will not continue to work when dry, it is not a biocide.