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Topic: Limestone slabs< Next Oldest | Next Newest >
Paigethan
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Posted: 16 Sep. 2019,22:19 QUOTE

I have recently had black limestone slabs laid. But the installer was not very tidy and has got cement on the slabs. I now have footprint marks on my slabs and cement stains as well as some salt marks you get with limestone slabs. Is there any way that I can clean the dry cement off my slabs without damageing them further I have tried pressure washer. Any help greatly appreciated. I know that I can't use and cleaner with acid in.

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A.Vaughan
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Tony McC
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Posted: 17 Sep. 2019,12:55 QUOTE

You should run a search on this all-too-common topic using the button above - it seems to crop up at least once a month.

No easy answer other than very, VERY careful and multiple repetitions of cleaning with a weak citric or phosphoric acid-based cleaner. Even then, it doesn't always work - either the cement is too stubborn to shift or the acid-wash is too strong and it 'bleaches' the limestone - so don't go building-up your hopes!


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Paigethan
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Posted: 17 Sep. 2019,14:48 QUOTE

OK thanks for advice. Any idea of the best cleaning product to try.

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A.Vaughan
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2 replies since 16 Sep. 2019,22:19 < Next Oldest | Next Newest >

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