Hi - I’ve lime washed our 1930s lime plaster but after two coats it’s barely made a dent in coverage and I’ve decided to go with Claypaint instead from Fenwick and Tilbrook. The last coat of limewash was two weeks ago. The walls do leave a dust when I wipe my fingers on it. They said to brush down before painting in clay. After brushing I’ve still got the light dust… i really don’t want to waste even more money. Will the Claypaint adhere ok? What are your thoughts?