Once you have chosen the exterior plaster best suited to the climatic characteristics of the area in which the building is located, proceed with the preparation of the wall which must be well cleaned. The work is not done freehand, because it is very important that the plaster layer is That’s why you work in small areas at a time. The walls must in fact be crossed vertically, from the ground to the ceiling, by strips of plaster between 10 and 15 centimeters wide, at a distance of one meter from each other. They must be smooth and perfectly plumb because they will serve as a base on which to rest the staffor aluminum straight edge. As an alternative to the bands you can use wooden strips always with the same thickness reference function.
Once this base is prepared, the steps for plastering the exterior wall are few and simple. Remember that you have to apply three layers of plaster on the outer wall: the first as a base, the second to give thickness, the third as a finish in three layers. Each layer must be smoothed with a trowel and then left to solidify before moving on to the next. The sense of work is always from the floor to the ceiling. Start at the floor and work your way up to the ceiling applying a plaster as thick as the strips. and thrown with a decisive blow against the wall, the part that falls to the ground must be collected and re-kneaded. Once the area is finished, perform the smoothing by placing the aluminum staff on the two bands or on the reference wooden strips, and moving it from right to left.
This serves to level the plaster, moving the excess towards the points where it is missing. To plaster the external wall, a decorative rustic effect is often used for the final layer that produces decorations. You can use the brush, the decorator’s spatula or the toothed spatula which, moved with parallel or rotating movements, trace pleasant decorative designs.