mapping

So I’ve moved into a new build at the end of March and just gotten around to trying to paint the plaster walls. I had a viewing in January and the walls had been plastered by then so they’ve had at least a few months to dry out. Went in with a mist coat as recommended and made sure to dilute it...

hello! I hope someone can help. We recently had a hallway replastered, following a damp course. I applied a mist coat of watered down emulsion, and it has come up with a mapping effect - that is to say big raised patches where the mist coat hasn’t properly sunk into the walls. I somewhat...