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stevo_com-
Now I read it back it does sound unnecessarily snarky, rather than jokey.
@jameo +1 to it being a good job. Not bricks, but on limestone when I used a specific cleaner I found that a very stiff old school scrubbing brush helped to work it in, and lift off the mortar.
For some of the worst bits I used a soft wire brush, but do a test patch and let it dry as it can scratch.
hugo7
Tell her to go ask on her own forum for advice, then tidy it up 😊