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Having problems with black spot on my paving slabs. I have tried power washer, Patio Magic and patio cleaner from Wilko. Have any members had success and what did the trick for you?



We've tried every year Jimmy with power washingand various chemicals .It seems to be a never-ending job...
apparently there are particular slabs which don't attract the spots.

19 Aug, 2023


Same here, Jimmy,but ours are the slabs,used as a circular feature,and all the white marks are said to be Lichens,which are a natural occurance with this type of slab.. No amount of cleaning will shift them,as we have tried.. We just have to live with them..

19 Aug, 2023

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