cleaning paving slabs

sonofmargery | 14:19 Thu 13th Nov 2008 | Home & Garden

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I want to clean my paving slabs. I have jet-washed them but I am still left with black spots which are unsightly. I have a feeling this is residue from a sealant which was applied by a previous owner. Any suggestions how I can remove these spots?

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weeal

have you tried a bucket of bleach brushed into the black bits? leave for a while then rinse and see if that helps

sonofmargery

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Brilliant! Cleaned off every spot. I've tried various solutions (petrol etc) without success Many thanks

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