According to the structure (relief of the surface) of the plaster there are several main types:
Smooth plaster is available on the market as an option for finishing coatings for exterior facades. It is cement-based, with various fillers and additives, but since smooth plasters for external use are not really widely used, we will pay more attention to other types of plasters.
Smooth plaster should be understood as smooth gypsum lining plaster for interior laying on walls and ceilings. It is usually applied by machine (with turbosol) and its biggest advantage is that it replaces both lime-cement lining plaster on the walls and gypsum plaster on it.
Since the effect of dragging or scratching is obtained from the stone contained in the plaster, it is important to mention that according to its size there are several types of plaster - with stone 1.5 mm, stone 2.00 mm, stone 2.5 mm and stone 3 mm. The thickness of the plaster layer is practically determined by the size of the grains in it. The larger they are, the thicker the layer becomes, and the surface acquires a more embossed and rough structure.
The drawn plaster has a certain amount of grains, the size of which significantly exceeds the size of the others, and during the application and processing the desired structure is obtained.
It is these grains that roll and drag when smoothed with a trowel, leaving deep longitudinal marks, the shape and direction of which depend on the way the tool moves. When pulling from top to bottom, vertical grooves are formed, and when circular movement, a relief structure with arbitrarily arranged curvilinearly shaped grooves is obtained.
Scratched (grainy) plaster
With this plaster the stones are of the same size and during the spraying (smoothing with circular movements) a uniform rough / granular / structure is obtained, without grooves and grooves.
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