To build a house, you have a series of steps to follow, from raising the wall to moving inside. One of these steps is plaster, which can be made by a team of craftsmen or by using the technical resources at hand, such as the mechanized process that reduces the time and financial resources required. Why choose such an application? Find out from these lines.
Those who want to move as quickly as possible in their own home, who prefer a luxury finish obtained quickly and which is accompanied by advantageous prices can use the mechanized plasters available for commercial spaces, but also residential houses and apartments. Why choose this type of construction and finishing? In this article you will find out something about this method of application and what it involves.
Mechanized plaster is applied to the wall – a vertical or horizontal support – by using special plastering equipment. The mortar will reach these surfaces by using hoses that have a spirit at the end that is adjusted according to the type of material used. Through this type of use, the final result will be a qualitative one, without cracks and with a finish ready to be covered with color.
This method can be applied to any type of building, in such a way as to avoid waste of materials and considerably reduce the execution time, the effect being one appreciated by customers.
Why choose mechanized plaster
Unlike the classical method, this type has the following strengths:
It proves to be much more reliable in terms of costs, quantity of materials and execution times,
The resulting walls are very straight and uneven,
The risk of cracks is minimal,
The yield can be up to 150 meters per day,
The wall dries faster,
The finishing and the next steps will be easier to perform,
The plaster material is saved, as is the labor,
By using special corners the ends of the room will have perfect dimensions and angles,
All you need to do is add a layer of plaster.
What materials are used
Fortunately, mechanized plaster does not impose great restrictions on the materials used, so the base can be made of known sand, a combination of sand with lime, plaster or multibat and sand, among others. This detail is not a problem in terms of application, because the gun (or spray hose) is adjustable, so that the fluidity of the mortar (or lack thereof) will not block it.
One of the most popular materials for mechanical plaster is based on plaster, being intended for the interior, presenting a high degree of finishing, which does not necessarily require the application of two layers of plaster. In addition, it has the property to regulate the humidity of the room. But it requires more attention regarding the preparation of the support, having to remove the wires or formwork that can lead to rust, given that this mortar is corrosive.
In addition, there are mixtures specially designed for application in this way. They are usually used in two thin layers, of at least 8 mm and up to 4 cm, in some cases it may be necessary to add a reinforcing mesh for support. These nets are added at the time of construction and between the different layers of support (from brick or concrete or BCA) or above the grooves of the cable channels.
How to prepare the mechanized application of the plaster
In order to achieve a perfect application, it is necessary to follow some steps, namely the preparation of the substrate, the plaster, its application and finishing.
One of the most important actions is to prepare the support for receiving the mortar, it must be cleaned of dust and oily residues, being necessary to be both dry and stable. If there is degradation or exfoliation, or if traces of cement are still found, the application will be deficient. It is clear that the construction of the walls and other structural elements was completed before moving on to this step. Before the actual application of the mortar, a special primer will be introduced (for concrete, brick, etc.) which will have the role of supporting and gripping the plaster. Some profiles will be placed that ensure horizontality and corners so that the edges are protected.
The mortar will be prepared according to the specifications on the package, usually involving mixing the construction material with a certain amount of water.
The actual application will be done with the help of a plastering machine , by adjusting the operating pressure and the spray gun, so that the surface has the desired thickness. The other processing elements will be carried out manually, by the workers, by grinding, but not before checking if the surface is flat by using a poloboc (air bubble level) or the trapezoidal or H-type straightener.
The last step is sanding the plaster, being done with the help of a drist.
What tips can you follow for an efficient mechanical application of plaster
For a favorable result, it is worth following some general ideas, first of all being necessary to know the application technique in order for the result to be a satisfactory and resistant one in time. At the same time, it is recommended to use quality construction materials, with which to work easily, even if the economic investment may be higher.
Gypsum-based plasters are generally made in one layer, two layers being used only if you want to obtain a greater thickness.
This step is performed in layers of at least 8 mm, and maximum 4 cm, in usual conditions.
The substrate will be cleaned properly, always applying the primer suitable for the plaster to be added.
Do not overdo it with the finish of the plaster because if it is too polished it will get a too fine surface, similar to glass, which will repel paints and will not have the same efficiency in terms of moisture regulation properties in the room.
Check the residual moisture of the substrate before applying the plaster layer.
The temperatures at which it is possible to work at this stage will be observed and no changes will be made when the thermometers show less than five degrees or more than 30, otherwise the plaster can be compromised.