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How to Remove Black Spots from a Patio Safely

How to Remove Black Spots from a Patio Safely

By Mark Cave July 04, 2026 |

How to Remove Black Spots From a Patio Black spots on a patio are usually lichen colonies that have rooted into the surface of paving slabs, especially Indian sandstone, limestone, concrete flags, porcelain grout lines and older block paving. The most reliable way to remove them is to combine correct...

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