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2 years in and there are still spots in other places in the house that haven't been touched yet where a wipe or sponge comes away brown. So yeah, I can't imagine she's long for the world. Should have Zinnsered that whole room when I had finished with the sugar soap and vinegar, as I threw over 15L of Leyland Trade Emulsion at it before all the discolouring went away. Probably increased the insulation properties with the inch of paint I put on the walls and ceiling...
But all salvageable.