How to choose a plaster for wet rooms? Plaster for the bathroom: features of work in wet rooms.

Excessive humidity in a room is a factor that makes increased demands on the way it is finished. For these purposes, tile is often used. An alternative to it is moisture resistant plaster For bathroom. She has a whole range of advantages. With its help, you can not only align walls and ceilings, but also decorate the room. Decorative finishing will give the room an original, unique look. In this way, the courageous design solutions for interior decoration, vivid example which is shown in the following photo.

Varieties of moisture-resistant plaster by purpose and composition

Plaster for wet rooms differs in the presence of a number of additives that give it moisture-repellent properties. Such mixtures differ in both their purpose and composition. Their important feature is their increased plasticity, which makes it possible to obtain even corners and smooth coatings, ready to paint almost immediately. On the first basis, the following types of plaster are distinguished:

• leveling mixtures;
• decorative compositions.

The former are only used to receive flat surfaces for rough wall decoration. They prepare work areas for the application of tiles, paint (moisture resistant) and other decorative means.

For leveling, cement-sand and gypsum materials with various additives are most often used.

Decorative plaster mix is a finishing finishing material applied thin layer... In this case, the surface of the base must be pre-leveled.

The compositional classification of the material is shown in the following table.

Separation of moisture-resistant plaster compositions according to the constituent components

Plaster is produced in a ready-to-use (diluted to the desired consistency) state, or dry, requiring dilution with water, respectively, with the help of the first variety, finishing work is performed faster.

Material characteristic

Water-resistant bathroom plaster has a whole range of positive properties. They put it forward to a leading position (in terms of application) among other materials for interior decoration with high humidity... The advantages of the material are as follows:

• it contains environmentally friendly components;
• the resulting plaster layer strongly adheres to the base, which contributes to its strength and long service life;
• such a coating does not absorb water, but passes its vapors through itself, therefore moisture condenses slightly on glossy surfaces and mirrors of bathrooms decorated with moisture-resistant plaster;
• microorganisms (fungi and mold) do not spread on it;
• the material applied to the wall or ceiling smooths out their irregularities and defects;
• decorative mixtures allow you to create a variety of relief patterns, decorating a room, combining with other finishing materials, for example, as in the picture;

• big choice colors and shades allows you to do without the use of paint;
• when creating a decor, the solution is used sparingly;
• easy maintenance of the final coating;
• fast drying of the applied layer reduces the time of work;
• use of compounds on concrete, plasterboard, brick, foam concrete surfaces does not require their special preparation, it is enough to perform only their priming;
• salt stains do not appear on the finished finished surface;
• the material does not crack over time, does not shrink, and is resistant to temperature extremes.

The main competitive advantages waterproof putties are their versatility, ease of use and economy.

Leveling mixtures

Surface leveling mixtures prepare the base for further decoration. They must have good adhesive properties and serve as a reliable, solid base.

Often the work is carried out with cement or gypsum plaster containing additives. In this case, dry materials by dilution with water in a certain proportion are brought to the right level plasticity.

It should be borne in mind that gypsum plaster is weaker than cement plaster in terms of strength. Handle it with care to avoid damage. By itself, it is not resistant to moisture, so it is applied to walls pre-coated with a waterproof compound and protected from water from the outside using ceramics, glass and plastic.

Now the following grades of leveling material are common:

• profit barrier;
• knauf xn;
• ceresit cr 65;
• profit hydrophobic;
• vetonite tt;
• consolit 540;
• unis Teplon.

They differ in price and quality. Produced in bags, as in the photo.

The choice of a particular brand is associated with both personal financial capabilities and the compliance of its characteristics with the conditions of use.

Materials for decorative finishing

Moisture-resistant decorative plaster for the bathroom is selected based on the effect you want to achieve. It is recommended to avoid gypsum compositions, use cement or polymer mixtures. The packages must contain a mark about the level of moisture resistance of the finishing material.

On the modern market moisture resistant compounds that allow you to create decoration rooms are presented. You can easily find the right product. For example, polymer materials STUC DECO and GRANITO give surfaces different textures, while orange peel helps to create DUFA KRATZPUTZ.

It is widely used in bathroom decoration Venetian plaster covered with a special wax protective layer... Its application requires experience of this kind of work.

Decorative compositions allow you to get a one-piece coating without seams, which is not inferior in its characteristics to tiles. With their help, they create an interior of a unique look, similar to that shown in the photo.

Decorative plasters are much more expensive than leveling plasters. But thanks to their application in a thin layer, 20 kg of packaging is enough for processing up to 30 sq. m. working surface.

Technology of work with moisture-resistant plaster

The process of applying decorative moisture-resistant plaster begins after the formation of the leveling layer. It turns out that the complete decoration of the bathroom requires the sequential use of 2 types of mixtures. Step by step, the activities are carried out as follows:

• prepare the base by removing old finishing materials from its surface: plaster, tiles and paint;
• form a leveling layer that is resistant to water;
• apply a decorative moisture-resistant layer, which gives the coating not only stylish design, but also increasing the resistance of the finish to the negative influences present.

The plastering process itself is as follows:

• after mechanical cleaning special means remove salt and oil stains from the working surface;
• if plastered Brick wall, then the seams between its elements are further deepened to improve adhesion;
• when working on concrete surfaces, a notch is applied, which increases the degree of adhesion of the solution to the base;
• the prepared wall (ceiling) is primed, and if the base is porous, then the process is repeated up to 3 times;
• wait for complete drying specified in the instructions for the composition used;
• alignment is performed, and if the irregularities are significant, they are pre-set at the level of beacons, which are dismantled after the solution has dried;
• on the completely dried first layer, the desired design is already applied: tiles, decorative plaster, or left for painting.

When simulating the design of surfaces under various materials and in different styles- the technique of applying decor is different. To get a certain relief and patterns, you need to use special tools.

The photo shows the formation of decorative elements under the "leaves".

With the help of the simplest actions, you can significantly improve the quality of the resulting resulting coverage. Additional work do not take long. They are carried out during the plastering process.

In the video below, you can watch the application process decorative coating in the style of the sea wave.

Waterproof plaster is not a panacea for all problems that cause water with detergents to get on the walls and arising from high humidity. But compliance the right technology works, selection of a suitable composition, taking into account the nuances of its application - will get rid of most of them. To obtain a durable, beautiful coating, you should carefully choose the finishing material, and when working with it, you should not deviate from the instructions indicated on the package. It is available to everyone to choose waterproof compositions for their conditions and capabilities.

For finishing of premises with difficult conditions operation must be treated very carefully, avoiding the use of materials that may not withstand the aggressive effects of moisture and temperature changes. For example, in the bathroom it is not recommended to use gypsum plaster or wallpaper - they won't last long. But cement and polymer moisture-resistant plasters are highly resistant to such influences. We will talk about them.

Moisture-resistant plaster mixes can be different both in composition and in purpose:

• Some are intended solely for leveling surfaces and preparing them for decorative coating. For example, moisture resistant paint or tile.

• And the latter themselves are decorative material that does not require subsequent finishing.

Note. Moisture-resistant decorative plaster for the bathroom is applied in a thin layer, therefore, when uneven walls requires preparation of the base with leveling compounds.

Of course, you can level the walls using sheets. moisture resistant drywall(cm. ). It will perfectly cope with this task, any coating can be applied to it, and it will serve reliably. But only until you are flooded by the neighbors from above. This possibility cannot be ruled out if you live in a high-rise building, so it is better to use more reliable materials.

Leveling compounds

Alignment is the removal of the surface in one plane without drops, pits and bumps. The material used for this must adhere well to the walls and serve as a solid base for decorative finishes.

Since the air humidity in the bathroom is high, it uses moisture-resistant plasters (see), the main binder of which is cement or polymer resins. These are ready-to-use or dry mixtures that require mixing with water, the proportions of the components in which are carefully selected.

But gypsum plasters should be used with caution, since they can withstand such operating conditions only if the surface is tiled with tiles with careful grouting, which excludes the penetration of moisture under the cladding.

Note. There are moisture resistant gypsum mix with special additives that make the plaster more resistant to moisture. But not to direct impact water! The instruction for them states that they can be used for plastering walls and ceilings in wet rooms.

If you nevertheless decide to use gypsum plaster (see), as it is more convenient to work with and does not give shrinkage cracks, experts advise to play it safe and protect the surface leveled by it waterproofing materials coating type. However, in case of a flood from above, it will not save you, because water will penetrate to the coating from the unprotected side.

We are offering to you comparative analysis prices are the most popular plasters intended for wet rooms. The cost can change over time or depending on the region, so we advise you to take it just as a benchmark for comparison. It is given for a bag of 25 kg.

The indicated consumption of the ready-mixed mixture is designed to create a leveling layer with a thickness of 10 mm.

Compositions for decorative finishing

If you need moisture-resistant decorative plaster for the bathroom, then the selection criteria are the same here: it is advisable to avoid gypsum-based compounds, using cement and polymer mixtures. In principle, there is nothing complicated: you just need to look for a mark on moisture resistance on the package.

• Such a characteristic is possessed, for example, of STUC DECO and STUC GRANITO polymer plasters, which can be given a different texture, acrylic plaster with the effect of “ orange peel"Dufa Kratzputz aussen. They cost much more than leveling compounds, but they are applied in a thin layer, so a 20 kg package is enough for 10-30 square meters surface.

• Also, decorative moisture resistant can be used for finishing bathrooms. But it is desirable to cover it with a protective layer, which is often used as a special wax Optimist for plastered surfaces, which creates a protective moisture-resistant film.

Advice. Venetian plaster is one of the most difficult to apply. Therefore, if you do not have experience, do not risk applying it yourself. Many other decorative compositions are much easier to work with.

Such a finish is good in that it creates an integral seamless coating, in terms of its strength and moisture resistant characteristics not inferior to tiles. In addition, both of these materials are perfectly combined with each other, allowing you to create an interesting and original design.

The only limitation concerns the surface texture: it should not be very embossed. In depressions, depressions and grooves, water will necessarily accumulate and mold will appear. In addition, washing such a surface is very problematic.

Do not hope that moisture resistant plaster for the bathroom will save you from all the problems associated with high humidity and direct ingress of water and detergents on the walls. You can count on this only if the finishing technology was strictly followed in the process of carrying out the work.

Namely:

• Both the base and the already dried plastered surface must be treated with a waterproofing compound (see) or a primer deep penetration;

• Treatment with fungicidal agents that prevent the formation and development of fungal microorganisms and mold will not be superfluous;

Advice. You can immediately look in stores for a primer with antifungal additives.

• , fixed on the walls with gypsum mortar, then when removing the beacons after the plaster has set, it is necessary to thoroughly clean the places of their attachment on the walls from gypsum;

• If you are preparing a solution for plaster with your own hands, do not feel sorry for the cement, exactly observe the proportions recommended for this brand. Adding liquid glass to the solution will help to make the coating more durable and waterproof;
• If the walls are aligned under the tiling, try to do the job as efficiently as possible, not hoping that minor flaws can be corrected by the thickness of the tile adhesive.

Conclusion

Increasingly, traditional tiles are giving way to decorative plaster in bathrooms. But even under the tiles, it is necessary to level the base, and for this you can use only moisture-resistant plaster mixtures. You know the basic principles by which they should be chosen. And how the application process itself takes place, the video in this article will tell.

This article will discuss the possibility of using various types of plasters for finishing bathroom surfaces and other wet rooms. Our main task is to find an adequate option for use in difficult conditions.

Leveling and decorating the base

Despite the innovations in the field of construction, not all apartment owners in new buildings can boast of smooth walls. And when their curvature is especially bad for the eyes in the bathroom, it is worth sacrificing a few square centimeters of area to give the room a decent look. This can be done using special moisture resistant drywall sheets mounted on a frame or glued. And it is better to go along the path of plastering the surface - this way you can more effectively use the already small area of ​​the bathroom.

In general, the use of plaster for wet rooms can solve two global problems:

1. preparation of the base for subsequent finishing work. This can be cladding with tiles or some other piece materials, painting, applying decorative plaster, etc.;
2. giving the base a finished look with the help of thin-layer decorative compositions... And if in the first case the choice is small, then in terms of design, the number of options is practically incalculable. But more on that later.

Alignment of walls (or ceilings) is carried out using solutions based on binders such as cement or gypsum. Usually, preference is given to ready-made dry mixtures with verified proportions of the components, but this does not prevent you from kneading the solution yourself. We will talk about the expediency of using gypsum plaster below, but for now we suggest that you familiarize yourself with the approximate prices for dry mixes.

(*) Given the incomprehensible situation with the course Russian ruble and the abrupt change in prices for dry mixes, the table shows the approximate cost solely for comparing formulations on the basis of "more expensive or less expensive".

We did not give as examples the entire assortment range of Ceresit and Knauf plasters. You can get acquainted with them in separate articles. The same goes for decorative plasters. Basically, you can use any Venetian plaster. Just do not forget to use as a finishing layer protective compound... For example, Optimist plaster wax. At a price of 500-800 rubles. per kg, the packaging is enough for surface treatment with an area of ​​10-15 sq. m.

Which solution to use for leveling

This question is ambiguous - it all depends on the specific situation. For example, gypsum coatings are very afraid of operating conditions with high humidity. The direct impact of water is like death for them. The solution suggests itself to isolate the aligned plane from external environment... This can be done using a coating-type waterproofing compound. It would seem that the problem has been resolved. But even in this situation there is a risk. Suppose that you have plastered the walls and ceiling of the lighthouses, protected them from humid air using waterproof solutions, glued the tiles. And after a while, the neighbors from above accidentally forgot to turn on the tap or knocked over a bucket of water on the floor, which will surely have time to seep out to you. In this case, moisture will come into contact with the plaster from the unprotected side. This will cause it to swell and reduce adhesion. In the worst state of affairs, tiles may fall off the walls.

But there are mixtures that are labeled as "moisture resistant plaster". They are also gypsum, but due to their composition they make it possible to obtain a surface that is not afraid of exposure to humid air.

The video below discusses situations when gypsum plaster can be used, and when it is better to use for bathroom decoration cement compositions... Well, in general, it is shown to what state it is better to refine the base for the subsequent gluing of the tiles.

Why so a large number of do finishers use gypsum plaster when leveling the walls in the bathroom? Everything is explained by the fact that this composition is the easiest to work with. In fact, "for themselves" these people work with cement mortar - it is safer this way.

And for good reason: it is the cement mortar that is considered the most a good decision For bathroom. It has good adhesion to stone substrates, water resistance, durability. Below is a video on how to exercise plastering work In bathroom. It is about leveling the base for subsequent gluing of the tiles. The video demonstrates an approach to the installation of beacons and the use of an adhesive layer for better adhesion of cement-based plaster.

In most cases, you can get by with the usual dry plaster mix M150. It is produced by many manufacturers and is quite capable of handling the task of leveling the base in the bathroom and other wet areas. Advantages: low cost, availability, ease of use and high quality of the finished surface. Flaws: high consumption(for 1 sq. m. 18-20 kg with a layer thickness of 10 mm), it is necessary to withstand a significant pause to achieve the desired properties of the coating.

Often, lighthouses are fixed with gypsum plaster, using cement plaster to form the leveling layer. After it has set, it is imperative to remove the beacons and clean the wall from traces of gypsum mortar.
If this is your first time going to lay tiles, but you are dealing with an uneven base, do not rely on the possibility of adjusting the plane at the expense of adhesive solution... Better work on the wall with plaster. Ideally flat wall much easier to veneer!
You can experiment with a solution, the components for which are cement and water glass. It sets quickly and gains strength just as rapidly, but allows you to get a really high-quality waterproof coating.
Regardless of the degree of water resistance of the finished plastered surface, it should be additionally treated with a deep penetration primer or suitable waterproofing compounds, for example, the same Aquastop, etc.
We must not forget that high humidity carries with it not only the threat of destruction of the finish, but also the development of microorganisms, mold, etc. Therefore, it will not be superfluous to apply a fungicidal primer, both on an unplastered base, and after leveling the walls with a solution.

From the rubric "This is not worth doing." When plastering an old bathroom, it is imperative to remove a layer of paint - completely, otherwise the plaster will "flop" and fall off along with the tiles glued to it. If you knead cement-sand mixture yourself, do not spare the cement. Due to its lack, the coating may turn out to be too fragile.

Decorative plaster in the bathroom

Any ready-made solution can be used. An important role is played by the application of a protective layer, which will serve as a barrier to humid air. And despite the fact that in our minds the installation "There is only tiles in the bathroom!" more people discover for themselves endless possibilities decorative plaster.

A video for those who doubt the advisability of using decorative plaster when decorating rooms such as a shower or bathroom. In fact, today there are compositions that, in terms of their waterproof properties, are almost as good as tiles. And if you take into account the integrity of the canvas and the opening design possibilities then accept final decision the choice of material becomes not so easy.

This might be helpful

Returning to the topic of mold development. It is worth choosing textures with the least pronounced relief. For example, bark beetle plaster is in no way suitable for finishing a bathroom, because the decorative effect implies the presence of many furrows in the coating, in which mold will surely start.
Surfaces that will subsequently be directly exposed to water are best tiled. The symbiosis of tiles and decorative plaster looks quite organic.

Despite the fact that our civilization is moving forward and constantly developing, creating more and more new technologies, nevertheless it does not forget about old materials, constantly improving them and bringing them to the ideal. This is good technology, which many modern masters undeservedly forget for one simple reason - new materials and technologies are easier to use. This, of course, is good, but with their simplicity, they also received disadvantages that affect the durability of the repair. For example, drywall - unlike it, high-quality plaster is able to serve and protect walls from destruction for much longer. Moreover, it can do all this effectively with equal success both indoors and outdoors, both in dry operating conditions and in a humid environment. We will talk about this material in this article, in which, together with the site, we will deal with the question of what is plaster for wet rooms and what are its features?

Plaster for rooms with high humidity photo

Wet room plaster: what is it

Plaster for rooms with high humidity differs from the standard version only in its ability to repel moisture. Such characteristics of the material are achieved by introducing special modifiers into its composition, which give the material the necessary qualities. The result of the use of additives is the high technical characteristics of moisture-resistant plaster.

And this is with regard to the main features of the material. Among other things, waterproof plaster is very easy to apply without the use of special technical means- everything is done the old fashioned way by using a spatula and a rule. And that's not all - almost all materials of this type can be additionally modified by introducing additives into them. For example, in order to speed up the hardening process of the mixture, gypsum can be freely added to such a plaster - in general, in this respect it is quite a standard material that modern builders use extremely rarely for the reason indicated above.

Varieties of plasters for wet walls

Today, two main types of plaster mixes are used for finishing rooms with high humidity.

What else you need to know about the types of moisture-resistant plasters is that they are classified according to other criteria.

1. Appointment. In this regard, all currently existing compositions, including gypsum and cement, are divided into two large groups- leveling and decorative plasters. What is the difference, it will not take long to explain - leveling plasters can be applied in a very thick layer, but are intended for the device of thin-layer coatings.
2. The degree of readiness for work. Here, in general, everything is simple - when planning repairs using plaster, you need to know that any composition (both decorative and leveling) can be purchased with equal success both ready-made and prepared independently.

Modern construction stores abound in various, including plasters for wet rooms. Buying them is the easiest solution. But if you really want to save money on repairs without losing its quality, then it is better to use the second option. We will tell you further how to create a water-repellent plaster with your own hands.

Self-production of wet plaster: options

Plastering the walls of wet rooms can be done not only with the help of special compounds - water repellent properties you can also give a ready-made plastered surface, which is the easiest way. The fact is that self-preparation of a dry mixture with the desired characteristics will require from you not only knowledge of proportions, but also equipment capable of observing all these proportions. In general, the matter is complex, even when it comes to additives added to a wet solution. The easiest way is to use other options that are no worse than those offered in stores.

In general, moisture resistant is a very specialized material and in apartment renovation it is practically not used. The only exceptions are decorative mixtures used in bathrooms instead of the usual tiles. As a rule, they are made on the basis of acrylic and successfully resist moisture even if it hits the walls directly.

In conclusion of the topic of what plaster for wet rooms is, I will say a few words about the difference between moisture-resistant and water-repellent plaster. These are two different things. The first option is able to withstand short-term exposure to high humidity (wetting followed by drying), and the second is designed for operation in a wet environment, that is, when the plaster is constantly exposed to moisture - for example, in the pool bowl, under the tiles. In fact, this is a complete waterproofing.

Wet room plaster is a necessary element for wall and ceiling decoration in the presence of high humidity. A bathroom, a room with an indoor pool and some other specific indoor areas are not advisable to be lined with ordinary materials. Water will do its job, and soon all the landscaping work will be in vain. Under the influence of moisture, the plaster will cease to perform its functions, and facing tiles will start to fall off. Special mixtures that can withstand such extreme conditions can save the day.

Any plaster performs the following main functions: leveling the surface and providing a reliable base for finishing cladding walls for ceramic tiles or ceiling for painting, as well as for the formation of the final coating immediately (decorative plaster). The main problem in rooms with high humidity is the penetration of moisture inside finishing materials, which leads to the loss of their basic properties, gradual destruction and the appearance of mold, fungi, and other harmful microorganisms.

Thus appears important requirement- increased moisture resistance, or better, complete moisture resistance. This problem is solved in 2 main ways: the use of moisture-resistant plaster mixes and the creation of a moisture-proof layer from a special coating or by impregnation after its application.

The choice of the direction of ensuring moisture resistance depends on the purpose of the room and finishing walls and ceiling. Moisture-resistant plaster, taking into account these features, can be of several types: cement, gypsum and with the use of polymer fillers.

Cement mixtures

Cement plaster is a mixture in which cement is used as a binder and sand is used as a filler. Waterproof plaster is created by adding special ingredients to the cement-sand composition. excellent quality and high performance characteristics provided when using ready-made dry mixes, which, before application, just need to be diluted in water in accordance with the instructions.

Of the cement mixtures, such a ready-made moisture-resistant plaster for the bathroom and other wet rooms is noted:

• EU waterproofing plaster: widely used for finishing stone surfaces;
• AZOLIT-VSh: can be used for brick and concrete walls;
• Murexin Waterproofing Hydro Basic 1K: used in very high humidity or in water (swimming pools);
• MAGMA GidroPlaster: suitable for surfaces made of any material;
• Profit Hydrophobic: often used as an additional layer of previously applied plaster to increase its water resistance;
• Ceresit CR 65: used for all substrates.

Cement moisture resistant plaster can be made by hand. The basis is a mixture of cement (not lower than M300) and sand in a ratio of 1: 3. Sand should be used with medium grain size. The use of excessively fine (dusty) sand leads to cracking of the plaster, and sand of coarse fractions degrades the technological qualities of the solution. When plastering rough brickwork you can use a 1: 4 ratio. As additional ingredient experienced builders use PVA glue to increase water resistance and washing powder to increase the plasticity of the solution.

The main advantage cement plasters is their high strength and good water resistance. However, it is necessary to note the disadvantages of such a solution:

1. A long period of complete hardening, when the required layer strength is achieved only after 25-28 days, which delays the whole process finishing works... Factory mixes have additives that accelerate drying, which reduces the period to 6-8 days.
2. Cracking. This process is typical for cement compositions and becomes most pronounced in the presence of significant temperature fluctuations. In ready-made mixtures, this disadvantage is leveled with the help of special plasticizers.
3. Enough dark color plastered surface, which causes increased paint consumption.

Gypsum compositions

By its nature, gypsum has such important disadvantage, as the ability to actively absorb water. Despite this, gypsum plaster is often used to decorate the bathroom, especially the ceiling. Whiteness contributes to the popularity of the material, which facilitates painting, ease of leveling the surface and the speed of complete drying. To eliminate the main drawback, additives (for example, PVA glue) are used when preparing the mixture and the gypsum layer is coated with a special water-repellent primer. When applied, a thickness of no more than 25 mm is recommended.

Waterproof gypsum plaster is produced by various companies with the introduction of special ingredients. So, a mixture based on gypsum Rotband (by Knauf) is intended specifically for rooms where there is high humidity, incl. for bathrooms. You can also note the ready-made moisture-resistant composition UNIS Teplon.

Compositions with polymer additives

Modern plaster mixes are made on the basis of polymer filling, which gives them high water-repellent properties, plasticity and strength. They are not susceptible to cracking, even with strong temperature fluctuations. Perhaps the only drawback is the increased cost.

There are such common formulations:

1. Profit Barrier. This is a cement-polymer mixture that can act as waterproofing. It has proven itself well when applying plaster under ceramic tiles.
2. Consolit 540 waterproofing plaster is a multicomponent composition based on a cement-polymer mixture.
3. Dufa Kratzputz aussen plaster has an acrylic base. It is used as a moisture-resistant decorative plaster for the bathroom. Has an original texture - "orange peel".
4. Moisture-resistant mixtures STUC DECO, STUC GRANITO. They contain a polymer as a binder. They have a decorative effect.

The choice of one or another plaster composition largely depends on how it will be provided topcoat, as well as on the purpose of the plaster - wall, ceiling. Most often in damp rooms, wall cladding is made of ceramic tiles... In this case, the requirement for the strength of the material with prolonged exposure to moisture and perfect alignment surface. The appearance of small cracks does not play a significant role, as does the color of the plaster, since it is reliably masked by the tiled cladding. In such circumstances, the most acceptable use of cement or cement-polymer mixtures.

A different picture arises when preparing for surface painting. The paint can't even hide the smallest defects on the contrary, it manifests them. This is most noticeably reflected in the arrangement of the ceiling in the bathroom. Any cracking when the composition dries is unacceptable. With such requirements, the choice is often made in favor of gypsum plaster.

Quite often there is a desire to apply such a plaster that does not require additional external coatings. This issue can be solved with the help of decorative plaster, which is also realized in a waterproof version. Decorating effect is achieved different ways: various colors, volumetric texture, imitation natural materials... It is not recommended to apply a decorative layer with deep grooves in bathrooms (for example, the so-called bark beetle plaster), because various microorganisms can settle in them, which leads to the formation of mold.

Of the ready-made compositions, Ceresit and Knauf plaster mixes are widely popular. The combination of tiled cladding and areas with decorative plaster... Most often, when creating a kind of interior, Venetian plaster is used. To increase the reliability of these coatings, an external protective layer is recommended. One of the common options is wax composition eg plaster wax Optimist.

In rooms with high humidity it is better to protect yourself and apply additional protection of the plaster from the harmful effects of water exposure. Additional waterproofing properties are provided by applying a thin, surface primer layer from Aquastop. Impregnation of the material with special antiseptic compounds or coating with a fungicidal primer will protect the walls and ceiling from mold.

Plaster for rooms with high humidity requires a special approach in the choice of material. It is necessary to use waterproof mixtures specially designed for this purpose. Additional protection will not be superfluous, but will help to increase the service life of finishing coatings.