How to clean bluestone window mantles?

[Aedp1]

Edwardian home with exterior window mantles from bluestone.  Cleaning up splattered paint but mantle still seems dull. Using hard bristle on drill.  Any tips for better result.

[JacobZ]

Hi @Aedp1,

A warm welcome to the Bunnings Workshop community and thank you for your question.

I'd suggest using a stone cleaner such as this Glitz Stone and Benchtop Cleaner with a light non-abrasive pad such as these Scotch-Brite 155 x 100mm Non-Scratch Scourer Pads.

You could also try using a poultice by mixing baking soda and water into a thick paste, spreading it over the area, and letting it sit for a few hours before scrubbing off.

Let me know what you think and if you have further questions, please don't hesitate to ask.

Jacob