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Staining on surface of slate

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

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 in between 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.

Previous article Are either of the Limestone Hearth Blanks you can supply suitable to use as an internal threshold to a set of patio doors, the substrate is a concrete surface. Can you supply either of these with a bevelled edge