Renovation inside or outside the premises will not do without plastering walls and other surfaces. At the design stage of work you need to familiarize yourself with the features of the plaster, which are divided into types, they differ in characteristics and price. The correctly chosen type of finishing material is half the battle, because characteristics of mixtures can differ significantly among themselves, and what is ideal for one type of room may be completely unacceptable for another.
Some features of plaster
Plaster is a mixture that is used for surface treatment as a rough finish. What are the functions of the material? Plaster can be used to level walls, repair cracks and other defects. Itself the structure of this solution is a coarse mixture, therefore, after drying, the surface will have rough surface... These effects can be easily eliminated in the future.
Walls can be plastered of almost any type, concrete and wooden structures will be protected from the harmful effects of environmental factors. Various techniques and materials are used for plastering aerated concrete walls. Trends in the field of construction are developing in such a way that such building material as aerated concrete is gaining more and more popularity. It has many advantages over concrete and brick construction.
The building, erected from aerated concrete, has increased energy-saving properties. This material is much lighter than traditional counterparts, due to this fact, you can reduce the cost of arranging the foundation and the construction time is significantly reduced. What kind of plaster is better to plaster the walls of aerated concrete blocks?
How to plaster aerated concrete walls?
One of the ways to decorate aerated concrete walls is plastering... For plastering walls made of cement-sand type blocks, this is the best option. As for the process of applying the finishing layer itself, if you wish, you can apply it directly to the wall. The same can be done with brick walls. However, this may pose some difficulties.
The brick is small, therefore seams between bricks serve as a connecting element when applying plaster. In the case of aerated concrete, the situation is somewhat different, because aerated concrete itself is large. This problem can be solved in several ways. Let's consider the main ones that are often used in practice.
Walls can be plastered both inside and outside the premises. Both types of finishes have some peculiarities. When choosing a plaster, it is best to select the one with the maximum adhesion coefficient. This is to ensure the quality of adhesion of materials.
Preparatory work
Before applying a layer of plaster, the walls are prepared from aerated concrete, this is necessary in order to ensure adhesion of materials. How is this done and what does this stage of surface finishing include?
First, you need pay attention to the seams between aerated concrete, they need to be well sealed, approximately by 4 - 5 mm... The wall is leveled, and all defects that may occur, dust and other microelements that reduce the quality of adhesion of materials are cleaned out. Sandpaper can be used to clean the surface to help sand the blocks more thoroughly.
How to apply mesh correctly when plastering walls?
If you decide to use the third method of surface finishing, then you need to know what is used in this galvanized mesh... It is more durable, reliable and does not rust. As for the size of the grid cells, you should pay attention to the one in which the cells are small. After carrying out the preparatory work, it will be necessary to attach the mesh directly to the wall. This must be done using ordinary nails. They are hammered into the wall first by one third, after which the nail is bent, fixes the mesh.
Particular attention should be paid to the edges of such a cross, they usually stick out, before applying the plaster, all the edges should be folded, then they will not stick out from under the plaster.
When the mesh is secured it is necessary to start applying the first layer of plaster. This is done in what is known as "Splash", it is mainly used to fill mesh cells with a solution. After it, several more layers of plaster will follow. This will necessarily be a primer layer, which must be kneaded by adding slag sand to the solution. The final layer will be the final layer; fine sand must be used to prepare the solution for it.
All layers of plaster can be apply with incomplete drying of the previous layer... This will shorten the time without compromising the strength and quality of the finishing layer.
Mortar for plastering walls can be purchased ready-made, it is sold in a dry state. To prepare the mixture, you just need to add water. But, you can also prepare a cement-sand mortar yourself. In this case do not skimp on the quality of the cement itself, since the water-repellency of the plaster will suffer as a result. When plastering walls, a lot of tasks and requirements are solved, such as thermal insulation characteristics of the surface, water resistance, noise insulation, and so on.
