Plaster GroundWork

To achieve a true surface and uniform thickness, vertical strips called screeds and bands are formed at points on the surface of the wall. These dots are first placed horizontally and vertically about 2 meters apart, covering the entire wall surface. These points are fixed by applying a small amount of plaster on the surface in the form of squares (15 cm × 15 cm) of about 10 mm thickness. The verticality of the dots, relative to each other, is checked by means of a plumb bob. After the dots are fixed, vertical strips of plaster called screeds are formed between the dots. These screeds act as gauges to maintain the thickness of plaster being applied. The mortar is then applied to the wall between the earthworks of the screed thus prepared

.