El cast It has a variety of functions inside and outside the home, since it has the triple function of achieving a smooth finish and good finish from an aesthetic point of view, protecting the walls where it is applied and eventually become a true environmentally friendly hygrometer.
Outside the plaster it has a predominant function of protection against corrosive action of time, absorbing the water, which will then quickly fall into the air. The interior is then used to absorb moisture from the surface of the walls.
If you have to plaster a large surface, especially if one intends to apply a plaster, to obtain a homogeneous thickness of the plaster and a good surface finish it is suitable to make use of reference lines that allow to work with precision.
Working with a float and trowel, therefore, it will be preferable to hang on the wall in the vertical direction, proceeding from top to bottom, from one inch thick mortar strips, wide and spaced about 10 cm to 80 cm , applied with the help of a 1 cm thick strip of wood, fixed to the wall with nails, to serve as a guide.
Now you can start the mortar on the wet wall, stretch and smooth with a trowel. Completed a strip, the wooden strip to move to a decision that led to the ends of the hardened mortar strips as it will allow us to maintain a uniform thickness.
This first coat of plaster, however, does not smooth out perfectly, but a sufficient roughness must be left to allow the second coat to be done more strongly.
The second coat of plaster will be much thinner (a few millimeters) and when used in environments such as basements and garages, it will be the last as it gives a more rustic appearance.
Applying the plaster finish, such a band, using the finest mortar (lime or plaster) and you have the task of finishing the surface.
The preparation of the dry mortar plaster is obtained by mixing the liquid components and then adding water, making the mass firm.
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Source - pourfemme.it