In any renovation of premises, one cannot do without plastering the walls. Plaster is a versatile material for finishing work on almost any surface. It gives the walls originality, eliminates irregularities, cracks.
There is such a type as leveling plaster, used as a rough treatment of walls for preparation for pasting or painting. To determine which one is better will help familiarity with the types of mixtures, their features, purpose, as well as what material the surface is made of.
Building mixtures contain an astringent base and additives.
Clay, lime, gypsum, cement can be a binding material.
The most common are gypsum plasters and sand-cement mixtures. They are distinguished by good plasticity, which contributes to the formation of a flat surface. If the cement base has lime additives, then the mortar becomes more plastic and it becomes easier to work with.
This mixture is called cement-lime. Ready-made mixtures are available for sale, packaged in bags.
Plaster can be used for initial leveling works and for finishing works, for interior and facade finishing. They differ in particle size, environmental resistance and cost. Also materials can be applied by hand or by machine.
The work on leveling the surface of the wall is not easy enough, because you cannot predict what the solution you will buy will be. To solve this problem, let's get acquainted with the main classifications of plaster. There are the following types: by purpose, ready to use, base material and binder. Each type has both pros and cons.
According to the degree of readiness for use, the plaster is divided into:
All mixtures are divided into dry and wet. Wet is a liquid solution that gradually hardens after application. Dry ones are represented by gypsum-fiber sheets - plasterboard. It is used in cases where it is necessary to quickly level a surface with large irregularities.
If the walls are relatively flat, a wet look is best.
Plasterboard alignment significantly reduces the size of the room, which is not good even for that already small room.
There is a certain classification of plaster depending on the base material.
Suitable for leveling work, but intended for finishing and decorative finishing:
The choice will depend on whether the material will be used in outside the building.
With the help of cement plaster, high-strength bases are created. Consists of lime, cement, water and sand. Such a mixture is highly resistant to humidity, temperature extremes, ultraviolet light and an affordable price.
However, there are also disadvantages of this material, which consists in a limited scope of use, namely the impossibility of applying it to a plastic or painted surface. The laborious application process uses spraying, leveling and trowelling.
The curing time of the material is quite long, about two weeks.
When using gypsum plaster, there is no shrinkage at all, so the surface to be leveled will be perfectly flat. The solution is safe, flexible and easy to use. Also, the surface to be treated will have low thermal conductivity, due to which the wall will be warm. The solution hardens in one week.
The disadvantages include the high cost and the fact that it is not suitable for outdoor decoration. Each mixture contains elements thanks to which the plaster can be endowed with such properties as moisture resistance, strength and resistance to temperature extremes.
The choice should be made in terms of the thickness of the application, the duration of the solution, the size of the fraction, in terms of the strength of adhesion to the surface.
For facade decoration and outdoor work, silicate solutions are considered the most suitable.
There are materials with a mineral base, especially for rooms with high humidity.
They withstand the effects of liquid and fungus. However, such a foundation will not last more than ten years. Plasters with the addition of silicone resins are flexible and have the ability to clean by atmospheric precipitation, but are expensive.
When choosing a plaster mixture, besides the fact that you need to decide on the solution, you need to decide on the brand. Many mixtures with the same input components have different costs.
The purpose of the material directly depends on its performance characteristics.Products of different brands may have the same parameters and properties.
At present, such manufacturers as Ceresit, Unis, Osnovit, Knauf, Rotband, Bergauf are very popular.
It is impossible to determine which brand of plaster is better. Also, with almost the same characteristics, domestic products are cheaper than imported ones.
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