✨ Transform your outdoor space—spotless, stunning, and social-media-ready! 🏡
DEEP DIRT LIFTING - Penetrates years of grime and stains, restoring surfaces to their original pristine condition.
EFFORTLESS RENEWAL - Ready-to-use formula powers through stubborn black spots and lichen with zero hassle.
VERSATILE STONE CARE - Perfectly safe and effective on natural stone, concrete, paving slabs, Indian sandstone, and limestone.
BROAD SURFACE COVERAGE - One 5L bottle treats up to 25 m², making large patios and driveways look brand new.
PROFESSIONAL GRADE CLEAN - Trusted by experts, this solution delivers a flawless finish that elevates your outdoor space’s curb appeal.
This 5L Black Spot Remover is a ready-to-use, professional-grade cleaner designed to eliminate black spots, lichen, and grime from natural stone, concrete, and paving surfaces. Covering up to 25 m² per bottle, it restores outdoor areas to a fresh, like-new appearance with minimal effort.
Specifications
Manufacturer
Assured Products Limited
Part number
SJ1501
Manufacturer reference
SJ1501
Coverage
25-25 Square meters
Included components
1 x 5L Black Spot Remover
Will this remove spots from block paving? Ours used to be red block but is now faded/dirty & covered with black spots
Can it be used on resin drives
will this product damage the grass
can this be used on large york stone patio
Reviews
3.9
All from verified purchases
D**N
Swept Clear
The Duncurins were at a large garden centre. My wife pointed to the row of patio-cleaning products and I knew what was about to come next. Our natural-stone patio is the bane of our lives. It sits there, a dark and discoloured mess. Of course, we pressure wash it but it really makes little difference. We have tried a succession of jet washers including hiring one and a couple of years ago I bought from Amazon what is said to be the most powerful mains-powered jet washer. Sadly, although this did have some impact just doing it was exhausting as you have to use the most powerful nozzle and hold it very close in order to make any progress and this means the ‘swept area’ is very small and tends to be streaky. It takes an age. It kills your back. It really is exhausting. I was thinking I’d have to buy a petrol-powered model and had started to scout one of these out on Amazon. The other point, before I forget, is that the patio is under a couple trees and these contribute to the black sticky mess and more importantly when it rains the surface becomes very, very slippery and, without exaggeration, a danger to life and limb. So much so, if it is at all wet, we used to have to warn visitors and always make sure our public liability insurance, I kid you not, is up to date.Anyway, coming back to the rack of cleaning agents. I pointed to the £9.99 special but my wife had espied the one for just under £40 for 2l. The assistant, sensing a like-minder person went on how effective it was and although my wife was sold – I paid.To be fair, she insisted on trying it as soon as we got home. We used a tray and roller rather than any sort of spray as it really is nasty stuff. Don’t roller it too vigorously as it will spray up and you don’t want this. You need a thick ‘dousing’ coating. Wear wellies, mask, rubber gloves and use a long pole on your roller, goggles too if you have them.Well, it worked wonders and we saw a colour that we had not seen for years – since it was new. It was also clean, dry and stable and not at all sticky. You need to wait for the bleach, which is its main component, to dry and we left it overnight before jet washing it again. It looked amazing and we also felt really pleased and ‘uplifted’ would not be too strong a word to use. Trouble is, there was only enough for about two thirds of our patio.I knew that I’d find it on Amazon and I saw similar products including this one from Spear and Jackson which is much cheaper and provides 5l. It was delivered in no time. I used the same method as above with the same precautions.Please note it is important to jet wash your patio before you start in order to remove dirt and ever-present bird poo. The nice thing is that it does not have to be the do-or-die, really dig in and do it - sort of jetting action; you can sit back a bit use a wider nozzle and this will be enough. This makes it quicker, easier and not in any way exhausting. Then allow it to dry then apply your wonder liquid.Both options are excellent. The Spear and Jackson 5l was used on the remaining third of the patio and I used it till it had gone. I also did the two steps which we have and the low wall cappings. I suspect although it is very good, the original Patio Black Spot Remover, available from Amazon for a similar price to the garden centre is superior. To be fair, the first two thirds were jetted a little more vigorously than the final third on which we used the Spear and Jackson offering but nevertheless the first product seemed to cut through it all effortlessly and gave us our patio back. This is the one we will buy again. Please see some pics of work in progress and the three products we used. The Patio Black Spot Remover, The Spear and Jackson 5l and the Sika stone protector as previously reviewed (to finish things off nicely). Good luck at reclaiming your patio.
J**E
Very good
This is a very good product. First coat has not got rid of all black spots but brought up most of the stone well. Another application may be needed but it does say that on the bottle. Very expensive. Smells like strong bleach. I wore goggles and gloves !
R**R
Excellent. Very effective
Better than expected and very good value. It cleaned the patio dreaded black marks very well along with general cleaning effect. I’d say only leave it on for 2 hours or monitor after this as it can have a bleaching effect if kept too long. Overall I totally recommend this. It was enough to do both our patios. Great product
J**B
Below par
Product bought just for black spot but did not work as well as their regular cleaner
S**B
Not strong enough.
I had my patio professionally cleaned with another black spot removal product. Strong smell of bleach and some dead grass but the result was immaculate. I bought this Spear and Jackson product to clean some spare slabs and it did nothing. Even after using it neat and leaving it overnight and then pressure washing, the black spots remained. Waste of time.
R**R
Super easy, works great!
Worked fantastic! The patio at my new property had been badly neglected. Even after pressure washing it it was left with lots of ugly black spots. Scrubbed this on with a broom and left for a few hours before rinsing down. Almost all of the marks are gone. Fantastic, it looks like new!
M**S
Effective product
Removed black spots from flagstones with one application when other products had failed.Only issue is a faulty cap on the bottle. I had to cut it off with a Stanley knife then decant the rest into milk bottles.
S**.
Actually works.
This cleaner is very good. My 15 year old basic stone patio has been getting worse and worse every year despite regular pressure washing. I have always steered clear of using an expensive product but I sprayed this on as directed and you can immediately see it fizzing up. After two hours I rinsed it off with a normal hose and you can see little black bits floating away. Whilst it has not removed all the spots it has lifted the dirt amazingly and my patio is now a pale grey again instead of a grubby looking dark grey. Fantastic. I shall definitely use every Spring if necessary.Now the year after I wrote this. No blackSpots have returned over winter and patio seems to be getting cleaner and cleaner all the time. I also used a mould and mildew remover.
Common Questions
Trustpilot
TrustScore 4.5 | 7,300+ reviews
Rajesh P.
Customer service was outstanding when I had questions about the product.
2 days ago
Ali H.
Fast shipping and excellent packaging. The Leatherman tool feels very premium and sturdy.
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Of course, we pressure wash it but it really makes little difference. We have tried a succession of jet washers including hiring one and a couple of years ago I bought from Amazon what is said to be the most powerful mains-powered jet washer. Sadly, although this did have some impact just doing it was exhausting as you have to use the most powerful nozzle and hold it very close in order to make any progress and this means the ‘swept area’ is very small and tends to be streaky. It takes an age. It kills your back. It really is exhausting. I was thinking I’d have to buy a petrol-powered model and had started to scout one of these out on Amazon. The other point, before I forget, is that the patio is under a couple trees and these contribute to the black sticky mess and more importantly when it rains the surface becomes very, very slippery and, without exaggeration, a danger to life and limb. So much so, if it is at all wet, we used to have to warn visitors and always make sure our public liability insurance, I kid you not, is up to date.Anyway, coming back to the rack of cleaning agents. I pointed to the £9.99 special but my wife had espied the one for just under £40 for 2l. The assistant, sensing a like-minder person went on how effective it was and although my wife was sold – I paid.To be fair, she insisted on trying it as soon as we got home. We used a tray and roller rather than any sort of spray as it really is nasty stuff. Don’t roller it too vigorously as it will spray up and you don’t want this. You need a thick ‘dousing’ coating. Wear wellies, mask, rubber gloves and use a long pole on your roller, goggles too if you have them.Well, it worked wonders and we saw a colour that we had not seen for years – since it was new. It was also clean, dry and stable and not at all sticky. You need to wait for the bleach, which is its main component, to dry and we left it overnight before jet washing it again. It looked amazing and we also felt really pleased and ‘uplifted’ would not be too strong a word to use. Trouble is, there was only enough for about two thirds of our patio.I knew that I’d find it on Amazon and I saw similar products including this one from Spear and Jackson which is much cheaper and provides 5l. It was delivered in no time. I used the same method as above with the same precautions.Please note it is important to jet wash your patio before you start in order to remove dirt and ever-present bird poo. The nice thing is that it does not have to be the do-or-die, really dig in and do it - sort of jetting action; you can sit back a bit use a wider nozzle and this will be enough. This makes it quicker, easier and not in any way exhausting. Then allow it to dry then apply your wonder liquid.Both options are excellent. The Spear and Jackson 5l was used on the remaining third of the patio and I used it till it had gone. I also did the two steps which we have and the low wall cappings. I suspect although it is very good, the original Patio Black Spot Remover, available from Amazon for a similar price to the garden centre is superior. To be fair, the first two thirds were jetted a little more vigorously than the final third on which we used the Spear and Jackson offering but nevertheless the first product seemed to cut through it all effortlessly and gave us our patio back. This is the one we will buy again. Please see some pics of work in progress and the three products we used. The Patio Black Spot Remover, The Spear and Jackson 5l and the Sika stone protector as previously reviewed (to finish things off nicely). Good luck at reclaiming your patio."},{"@type":"Review","reviewRating":{"@type":"Rating","ratingValue":"4.0"},"author":{"@type":"Person","name":"J***E"},"datePublished":"18 September 2022","name":"Very good","reviewBody":"This is a very good product. First coat has not got rid of all black spots but brought up most of the stone well. Another application may be needed but it does say that on the bottle. Very expensive. Smells like strong bleach. I wore goggles and gloves !"},{"@type":"Review","reviewRating":{"@type":"Rating","ratingValue":"5.0"},"author":{"@type":"Person","name":"R***R"},"datePublished":"28 May 2021","name":"Excellent. Very effective","reviewBody":"Better than expected and very good value. It cleaned the patio dreaded black marks very well along with general cleaning effect. I’d say only leave it on for 2 hours or monitor after this as it can have a bleaching effect if kept too long. Overall I totally recommend this. It was enough to do both our patios. Great product"},{"@type":"Review","reviewRating":{"@type":"Rating","ratingValue":"3.0"},"author":{"@type":"Person","name":"J***B"},"datePublished":"9 May 2021","name":"Below par","reviewBody":"Product bought just for black spot but did not work as well as their regular cleaner"},{"@type":"Review","reviewRating":{"@type":"Rating","ratingValue":"1.0"},"author":{"@type":"Person","name":"S***B"},"datePublished":"12 June 2021","name":"Not strong enough.","reviewBody":"I had my patio professionally cleaned with another black spot removal product. Strong smell of bleach and some dead grass but the result was immaculate. I bought this Spear and Jackson product to clean some spare slabs and it did nothing. Even after using it neat and leaving it overnight and then pressure washing, the black spots remained. Waste of time."},{"@type":"Review","reviewRating":{"@type":"Rating","ratingValue":"5.0"},"author":{"@type":"Person","name":"R***R"},"datePublished":"24 March 2021","name":"Super easy, works great!","reviewBody":"Worked fantastic! The patio at my new property had been badly neglected. Even after pressure washing it it was left with lots of ugly black spots. Scrubbed this on with a broom and left for a few hours before rinsing down. Almost all of the marks are gone. Fantastic, it looks like new!"},{"@type":"Review","reviewRating":{"@type":"Rating","ratingValue":"4.0"},"author":{"@type":"Person","name":"M***S"},"datePublished":"12 April 2021","name":"Effective product","reviewBody":"Removed black spots from flagstones with one application when other products had failed.Only issue is a faulty cap on the bottle. I had to cut it off with a Stanley knife then decant the rest into milk bottles."},{"@type":"Review","reviewRating":{"@type":"Rating","ratingValue":"5.0"},"author":{"@type":"Person","name":"S***."},"datePublished":"19 June 2022","name":"Actually works.","reviewBody":"This cleaner is very good. My 15 year old basic stone patio has been getting worse and worse every year despite regular pressure washing. I have always steered clear of using an expensive product but I sprayed this on as directed and you can immediately see it fizzing up. After two hours I rinsed it off with a normal hose and you can see little black bits floating away. Whilst it has not removed all the spots it has lifted the dirt amazingly and my patio is now a pale grey again instead of a grubby looking dark grey. Fantastic. I shall definitely use every Spring if necessary.Now the year after I wrote this. No blackSpots have returned over winter and patio seems to be getting cleaner and cleaner all the time. I also used a mould and mildew remover."}],"aggregateRating":{"@type":"AggregateRating","ratingValue":4,"bestRating":5,"ratingCount":8}},{"@type":"FAQPage","mainEntity":[{"@type":"Question","name":"Will this remove spots from block paving? Ours used to be red block but is now faded/dirty & covered with black spots","acceptedAnswer":{"@type":"Answer","text":"We often get black spots on our Indian stone paving and this is brilliant at removing them. It doesnt affect the colour of the paving but you should check it on a small section of block paving first as we haven't used it on blocks. Occasionally a second application is needed on stubborn spots."}},{"@type":"Question","name":"Can it be used on resin drives","acceptedAnswer":{"@type":"Answer","text":"Yes"}},{"@type":"Question","name":"will this product damage the grass","acceptedAnswer":{"@type":"Answer","text":"It contains sodium hypochlorite which I believe will kill plants and grass. That said, it works brilliantly on paving and completely removes black spots. It's very powerful stuff."}},{"@type":"Question","name":"can this be used on large york stone patio","acceptedAnswer":{"@type":"Answer","text":"Absolutely!"}}]}]}
