Q. I have spilt Black Liquid Dye down the side of a house, onto painted masonary. How can this be removed? A Q. I have spilt Black Liquid Dye down the side of a house, onto painted masonary. How can this be removed? A. This is very hard to remove. Can try Jet Washing but this may not remove it completely though. Cromar2020-03-18T15:18:45+00:00 Share This Product. FacebookXWhatsAppEmail