Plaster Mix
Plaster mix starts out whatever color the dry compound is that you are working with, and changes gray as it sets up, gradually to white as it dries. Plaster is used as a building material similar to mortar or cement . Like those materials plastering courses starts as a dry powder that is mixed with water to form a paste which liberates heat and then hardens. Plaster made from a poorly proportioned mix may be more difficult to repair.
Tags: plastering+courses, plasterer