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  • Is this worthwhile and if so has anyone got any sealant recommendations?

    Can't give you any recommendations, but my MIL is adamant it has to be sealed, otherwise you get lichen build up (personally I don't mine the way it looks, and figure you can blast it when it gets too much).

  • Well it depends on what you want it to look like.

    The problem for a lot of people is they buy sandstone because it's clean and light. So having it covered with shitty black spots doesn't really fit.

    If it grew this stuff them people might feel different.

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