In houses that is. You'd think by now someone would have invented gloss and satin finish paint that was water soluble. I hate fecking around with turps and spirits to clean brushes. Never seem to be able to get all the paint off and then when you come to use the brushes again, all the bristles are stuck fast. Still, on the up side, Dulux Once is bloody marvelous. Especially when you're putting white over a dark colour.