Staining on surface of slate
Asked by... George Green from London

The Question

How do I clean all the dust and marks from the slate hearth I’ve just bought?

The Answer

The residue is Quarry dust & cutting residue & is easily cleaned off with just plain water. You may need to do this a couple of times, making sure you dry off inbetween using a soft, lint-free cloth.
When you are happy with the finish, you can then apply your sealant. It is important that all residue is thoroughly cleaned off & the slate is completely dry before you seal, or you will 'trap' any marks into the sealant.

- Thursday 7th June 2018
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