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).
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).