The top layer of plaster added, the layer that is painted on. The artist will decide what section of the fresco is to be painted and lay enough plaster for that day. If the artist tries to paint too much, then they run the risk of the intonaco drying and accepting no more paint, so it important to judge correctly how much can be done. If the giornata is not finished then the artist will have to either scrape away the days work or add touches a secco