How Do You Clean Paving Slabs?
So last year I bought a property that needed a lot of work doing on it. I did most of the work inside the house and a bit of work on the garden. One of the big problems of the garden was the fact that there were a lot of paving slabs out there and most of them were covered in algae.
I thought it would be very costly (and not really necessary) to replace all of the paving slabs with new ones so I decided to try and find a way to clean them up. Over a few weeks I tried different methods to try and get rid of the algae and general staining that the paving slabs had accumulated over the years.
Things I Tried
I bought some liquid patio cleaner that you mix with water and used this with a stiff yard brush to try and get rid of the algae. Although this did help a bit and the paving slabs did get a bit cleaner they were still nowhere near where I wanted them to be. Added to this it was really hard work to scrub all of the paving slabs since I had so many!
The second thing that I tried was bleach. When I had searched for remedies for cleaning paving stones this was one thing that came up quite a lot. I was a bit hesitant as it did not seem very environmentally friendly to use bleach but I gave it a go, watered down, also with a stiff brush. Again I did get some limited results but still nothing major that I was happy with. Some people advised to use neat bleach but I didn’t really think that this would be a good thing to use in the garden, particularly as I had quite a lot to do.
The Best Thing to Clean Paving Slabs
So, as I was at a bit of a loss as to what to do next, my friend said that she would lend me her pressure washer. I had thought about using one but I wasn’t sure that I would get any better results that using the cleaners that were specially made for this job and a large amount of elbow grease!
Boy was I wrong. The moment I started cleaning with the pressure washer the slabs started to come up clean, almost like new! It took me about 5 minutes to clean each paving slab but the results were really incredible. It almost looks like I have replaced the patio.
The pressure washer works off your water supply and a clicklock hose attachment. Ideally you will need an outside tap but if you can fix the attachment on a kitchen tap then you should be able to get this to work. Turn the water on once the hose is attached and then plug the washer on and turn it on. It will make quite a bit of noise while it is working. A pressure washer usually has a couple of settings as to how the water comes out, I chose the most concentrated jet to do my slabs as this seemed to give the best results.
However, one thing you need to be aware of is that if you have any lose mortar in between the slabs there is a danger of this getting blown out by the jetwash. Also, wear old clothes as you can get sprayed with wet earth if there is mud between the paving stones.
Anyway, check out the pictures and the video and you will see what an amazing transformation can be made by using a pressure washer to clean your paving slabs.
You can buy pressure washers in local hardware stores or else there are a lot of options available on Amazon – US and UK:
