Number of Plaster Coats for Different Backgrounds The ideal number of coats, where practicable, is two, namely, the undercoat followed by a finishing coat. It is recognized, however, that much successful work has been carried out in the past with only a finishing coat plaster on reasonably plane backgrounds of brick, concrete and similar materials. … Read more
Importance or Objectives of Plastering Appearance To improve the appearance of the surface by providing an even, smooth, regular, clean and finished surface. Protection In case of external plastering, the objective is to preserve and protect the surface from atmospheric influences by acting as a protective coating. In case of internal plastering, the basic object … Read more
Blistering The development of one or more local swellings on the finished plaster surface. Cracking The development of one or more fissures not assignable to structural cause. Crazing The development of a series of hair cracks on the finished plaster surface. Known as ‘map crazing’, when it forms a haphazard pattern over the wall surface … Read more