Painting Plaster
Painting Plaster Plasters commonly used today are based on gypsum and the main type is retarded hemihydrates, e.g. Thistle or Carlite (lightweight). It is important to allow new plaster to dry out sufficiently before painting and to remove plaster fines (scum) which may have been produced by over-trowelling.Also, any efflorescent salt action, which could originate…