What paints for plastered walls. Paint for plaster - the main types and their features

Today, manufacturers offer a large selection of paints designed for outdoor use and satisfying all the necessary parameters. How to choose the right paint and how to paint the plaster with it? Let's look at the main types of paints that are most popular among consumers.

silicate

The basis is liquid glass, mineral elements and silicate filler. This colorful coating provides good resistance to moisture and direct sunlight, and is also capable of lasting at least 25 years. In addition, the walls painted with this material are not impregnated with moisture.

But silicate paint has some disadvantages. This is a weak resistance to abrasion and a tendency to chipping. The reason is that this coating is not elastic, so during operation it will certainly give negative results.

lime

It is already clear that this product is based on slaked lime. One of best virtues its is the impossibility of the development of fungus on the walls, as well as excellent vapor permeability. In addition, a material such as lime has some bactericidal properties.

The downside is that it can be washed off with water and gets dirty quickly. Lime paints also do not have large selection colors and shades. In the market, you will be able to find the product mainly white color or light colors.

Cement

Cement paint for external works in its composition has mineral Portland cement and color additives. According to its properties, it completely repeats the features of limestone. However, this type of facade coating over plaster is more resistant to precipitation, but is not able to protect the surface from bacteria.

As practice has shown, fungus is often visible on walls covered with cement paint. Therefore, most owners of private houses do not use it for processing external surfaces. It should be noted that the cost of this material is not high.

Acrylic

Today this paint to cover facade plaster is the most popular among consumers. It is made of acrylic resins, and has excellent qualities combined with affordable cost. This product has high abrasion resistance and reliable moisture resistance.

Manufacturers produce mainly acrylic paints intended for coating plastered external walls at home, on water based. But on the market you can find products that include organic solvents. They are usually used for old and worn surfaces that have already weak plaster.

What paint to choose for your home, it is better to consult with experts. Acrylic coating is able to hide some defects in the wall and will last for many years. At the same time, the cost is quite moderate.

Silicone

Silicone paint among all the options for facade coating is considered the best. Mostly silicone water-based formulations. External surface at home, painted with silicone material, acquires hydrophobic properties. All types of precipitation simply flow down the wall, never soaking into it.

At the same time, the painted walls perfectly retain vapor permeability. A large number of micropores in the silicone layer does not retain moisture in the plastered wall, which can always breathe.

Silicone paint has excellent adhesion not only to plasters, but also to other surfaces. If you are wondering how to paint walls without plaster, feel free to use it. She has not the first year good feedback from consumers.

The colorful coating is completely unaffected by high and low temperatures and ultraviolet radiation. At any time of the year, the facade of your house will look like new. The material is not electrified, so a lot of dust will not settle on the walls.

by the most big disadvantage silicone-based products are a high cost, which far exceeds the cost of other colorful products. In addition, it is endowed with a little less elasticity than acrylic.

Preparing the facade for painting

If the plastered surface has been previously painted, it is necessary to know exactly the type of paint. For example, if it was acrylic products, then you need to use the same type. In this case, you can even do without a primer by choosing an identical color of the coating.

It is better to remove oil compositions here. In order to free the wall from the old layer, it is necessary to use tools such as an iron spatula and a building hair dryer. You can start painting the facade only when the surface is smooth and clean.

There are cases when the outer walls of the building need to be treated with penetrating soil. Then the wall acquires good strength and better adhesion of the paint coating in relation to the treated surface. Masters recommend beginners not to neglect this stage of work.

Painting plaster

For painting facade plaster, it is better to use a spray gun. If you do not have such an opportunity, then a wide brush or a fleecy roller is quite suitable. It is advisable to install scaffolding for work.

Before starting the process, be sure to stir the composition well. If the volume is large, it would be good to use a special mixer. To get the appearance of a homogeneous paint, you must follow some rules. Coating strokes must be done alternately: vertically, then horizontally and diagonally.

Any paint intended for processing the plastered surface of the facade is applied twice. An exception will be lime, which must be applied to the walls at least three times. It is important that each time before applying the next layer, it must dry well.

It is also worth paying attention to the fact that painting the exterior walls of the house is carried out without long breaks. Otherwise, the border between the previously and newly painted areas will be noticeable. Also, try to keep the painted surface from wet precipitation and dust until it dries completely.

Facade paint on plaster for exterior and interior use are different compositions in which the emphasis is on certain qualities that correspond to their scope. So, painting facades requires a mixture that is resistant to moisture, temperature extremes, ultraviolet radiation, etc. For interior spaces, vapor permeability and safety are important.

In this article, we will analyze both types of paint for plasters. In addition, here will be discussed about the process of painting walls with their preliminary preparation.

Painting of plastered facades

Facade paint on plaster for outdoor work, or rather its quality and correct application, has big influence for the service life of the plaster. Therefore, the savings in this case can lead to more expenses.

Types of facade paints

• Acrylic compositions. Good adhesion to walls and a high degree of protection from external influences. Biostability is quite high. The most common options are water dispersion. Organic acrylic paints are less common. All of them are very well tinted.
• Based on Portland cement. Moisture resistant and inexpensive paint, but the level of protection against fungi and mold is low.
• Lime paints for a facade on plaster. Vapor permeable, with high biosecurity. Suitable for painting on the damp surface of fresh plaster.
• Silicone paint on plaster for outdoor use. An acid-resistant water-repellent film of silicone resins is created on the surface. The vapor permeability of the walls will be average, just as if they were covered with silicate compounds, which will be discussed below.

Paint for the facade of the house on plaster: you can buy compositions with any characteristics

• Silicate paint for outdoor work on plaster is weather-resistant, thanks to the features of the composition - calcium borate, alkali-resistant additives and liquid glass. It penetrates deep into the surface, protecting it well from atmospheric influences, and is quite chemically resistant. Vapor permeability is average. The disadvantage of the silicate composition is the impossibility of tinting into bright colors.
• Perchlorvinyl paint. Its main advantages are low price, wide color palette and the possibility of application on the street even in the cold. It has high chemical and biological stability. Disadvantages - it is highly flammable, during the painting of the facade on the plaster it emits toxic fumes and smells strongly.

Painted house facades

How to choose the right composition

When choosing a composition for painting exterior walls on plaster, it must be remembered that: the coatings on the outside are subject to temperature changes and the composition must have sufficient elasticity; the walls take on atmospheric precipitation - the painting of facades on plaster should be as hydrophobic as possible; facade surfaces are not protected from sun rays, which means they must be resistant to ultraviolet radiation; the lower part of the walls and the space around the doors are often subjected to mechanical stress.

Compatibility of types of plasters with paints

Preparation of facades for tinting. Clarification of the expected consumption of the compositions

First of all, standard actions are carried out to determine the state of the plaster itself and eliminate existing defects. The surface should not crumble and dust. If necessary, the walls are leveled with putty. After that, a deep penetrating primer is applied to the walls. The preparation should be taken very carefully, since the service life of the new coating depends on it.

To find out the consumption of facade paint per 1m2 for plaster, you will have to perform simple calculations. We find out the area of ​​\u200b\u200beach of the outer walls of the house and multiply by their number; find out the total area of ​​​​all door and window openings and subtract it from the area of ​​​​the walls; we multiply the result by the average consumption per 1m 2 - you will find this figure on the package. If it is supposed to apply several layers, then the result of the calculations is multiplied by their number.

Calculation of the area for painting

Technology for painting decorative plaster on facades

First of all, the composition must be mixed, - with a mixer or just clean wooden lath. Next, add color, if necessary. In cases where the coloring area is large and several packages need to be tinted, the pigment for each of them is measured exactly by weight or volume so that there are no discrepancies in shade.

When applying the first layer to the plaster, the movements of the brush or roller should be vertical. The second layer should be applied with strokes horizontally, on the cross of the previous one. So the overlap will be the most dense, without spots. You should work quickly, covering as much area as possible at a time. The day is chosen warm, dry and, if possible, windless.

Painting walls after plastering with a roller

Interior plastering

Paint for internal works on plaster is most often used on ceilings in living rooms and general premises. Walls are usually processed in this way in the corridor and in the kitchen. However, there are exceptions to everything.

Types of paints for plaster for interior work

• Water based paints. Widely used for plaster work. It is easy to work with them, there will be no problems with tinting either. Non-toxic, refractory, no pungent odor, vapor permeable. Moisture and abrasion resistance is average. Not suitable for use in showers and bathrooms.
• Latex paint for decorative plaster. Thanks to the polymer components, the finished coating is resistant to mechanical and deformation effects. Walls covered with latex paint can be washed with a sponge and various chemicals.
• Acrylic compositions for work on plaster. Like latex, acrylic mixtures withstand deformation and mechanical stress well - due to the composite that is part of them. Well tinted, easy to apply both with a brush and with an airbrush.

Interior paints

• Silicone based paints. Forms an antistatic, water-resistant coating with medium vapor permeability. Forms good adhesion to any kind of plaster, cleans with sponges and brushes. Perfect for showers and bathrooms.
• Oil paints. Forms a washable, matte or glossy surface. Works well with almost all types of paints. Minus - a pungent smell during application. Consumption oil paint on 1m2 on plaster is quite large.

Colored plaster in the interior

Selection criteria and calculation of the amount of paint for plaster inside a house or apartment

Of great importance is the operational load of the room in which you are going to paint the walls on decorative plaster. So, compositions for use in the corridor and in the kitchen must have high resistance to moisture, household chemicals and physical influences. The last two parameters are not important for processing the ceiling. Coloring mixtures for plaster in children's rooms should not only be washable, but also safe.

The higher the vapor permeability of interior paint, the better. In favor of this quality, when choosing, you can even sacrifice some other parameters. The use of "breathable" mixtures provides a good microclimate in living quarters. This is especially true for bedrooms and children's rooms.

Green color

The amount of paintwork materials is calculated in the same way as for facade works; we consider the total area of ​​​​the room, subtract from it the area of ​​\u200b\u200bwindow and doorways; multiply the resulting number by the consumption figure / m 2 indicated on the package.

Do-it-yourself preparation and painting of decorative plaster

Work to be done:

• Align walls vertically and horizontally, if necessary.
• Clearing and puttying small defects in plaster walls for painting.
• Grinding surfaces first with large, and then fine emery.
• Dusting of leveled and polished surfaces.
• Single or double processing primer composition, depending on the requirements indicated on the paint package.

Application of the composition with a roller

We open the paint cans and stir well, add color if necessary. In an inconspicuous place, we make a trial staining and see if the resulting color suits you. If not, we correct. Further work is carried out in the usual manner - with crosswise movements, using a paint brush or roller. The softness and length of the pile of the latter is determined based on the quality of the plaster - for smooth coatings suitable foam roller, for embossed - with a napped fur coat.

Painting decorative plaster in two colors. Video of working with textured bark beetle. In a similar way, you can paint the Venetian coating.

During repair work you have to perform many different tasks, each of which consists of several stages.

When it comes to finishing, first you need to make sure that the surface is smooth and even. And if certain defects are observed in the form of cracks and chips, plaster is used. It is used for interior and exterior work, but after drying, you often want to give a presentable surface, so you need to find the right paint.

Peculiarities

Facade paint is offered on the market in a wide range. She has next positive characteristics, is divided into types, each of which has its own characteristics, indicators and advantages.

Before you purchase a finishing material, you need to read its description, decide what effect you want to achieve as a result of repair work.

Materials for painting plaster must meet the following requirements:

• First of all, the coating must be resistant to resist external factors, temperature fluctuations and weather conditions.
• The surface must remain presentable for many years, not fade, so it is important to pay attention to the pigmentation of the material.
• Last but not least is the indicator of fire resistance, elasticity and antistatic effect, which allows you to repel dust, and this is important if the building is located close to the road.

Kinds

Manufacturers offer this product in a wide range, and each species has its own characteristics, which are useful to know. The market is replete with finishing paints for facades, they differ in ingredients in the composition and in their characteristics.

• Facade treatment with cement paint is in great demand. The basis is white Portland cement, but if you need to achieve a different shade, you can add color. Such material is resistant to atmospheric influences and is offered at very low prices.

• acrylic products found wide application among professional craftsmen repair and ordinary consumers. Its cost pleasantly surprises, and high quality meets any requirements. It should be noted poor vapor permeability, but at the same time the paint copes with mechanical damage. They are water-based and organic solvents.

• Silicone finishing materials. Paints on such a base are considered one of the best. When applied to plaster, the surface will become hydrophobic, so neither dew nor other precipitation will be absorbed into the facade, which means that the presentability will last for many years. Also, the coating does not fade from exposure to direct sunlight, is not afraid of strong temperature changes. Thanks to everyone listed benefits many people use this type of staining for decoration.

If it is necessary to cover structural, embossed or stone effect plaster, it is necessary to read the description of the paint, as it often indicates which material it is suitable for.

When buying, it is important to consider with what effect you want to make the facade, as this matters. If there are grains on the surface, and you want to get rid of them, it is necessary to prepare it before painting by correcting the irregularities.

• AT structured latex paints plasticizers are added, they are thick. The result is textured finish, which is sometimes much more popular than decorative plasters.

• If you are interested washable products, it includes silicate and acrylic materials. Exterior paint is often suitable for gypsum, brick and stucco substrates, depending on the type of finish you want to achieve.

How to calculate the expense?

There is a certain algorithm according to which you can first find out how much finishing material is required, be it acrylic paint or another type, per 1 m2 of surface. First you need to select plastered facades, then calculate their total area.

For outdoor work, more material will be required, and for finishing inside, the amount depends on the scale of the repair.

If you want to decorate multiple walls in a garage, apartment, or room, measure each of them and then add them up to get the surface area to be treated. To do this, you need to know the length and height of each wall. These numbers are multiplied and you get the final number. But you will also need to measure the total area of ​​​​doors and window structures that may be on the facade or in the room in order to subtract it from the total.

An indicator of the average paint consumption, and this depends on the type of material that you will use, must be multiplied by the surface area. Often, manufacturers indicate information on the packaging that can help the consumer make calculations.

It is important to consider how many layers of paint you will apply.

There are several points that come into play when calculating finishing costs. It is necessary to pay attention to the density of the material, because the thinner it is, the thinner the layer will be..

Before applying, you will need to prepare the surface. The indicators that are indicated on the paint containers are designed to work with a primed wall.. And since you are interested in a plastered surface, the consumption will be much higher.

Work technology

To paint the facade, you need to choose the effect that you want to get in the end. But with any option, it is necessary to prepare the surface before coating. If there is already old paint on it, it will need to be removed.

As for the same shade as before, it is not necessary to prime the facade. It is necessary to make sure that the old finish does not crumble, will not leave marks when touched. Before starting work, prepare tools, among which there must be a roller or a wide brush with a pile of medium length, and specialists use professional equipment.

How to paint "Bark beetle"

Wall covering is a serious task, which must be approached responsibly. It is important to make sure that the plaster is completely dry, and then apply the paintwork material.

There are two color options available. In the first, paint is used on a ready base, and in the second, color can be added to the mixture to obtain the desired color.

Painting the walls in this way will achieve the effect, extending the presentability of the facade.

Foam block cover

This material has excellent performance characteristics, so it is often used in the construction field. The surface is porous, and this must be taken into account before applying the finish.

If you want to fix this, you can plaster the wall inside the house or the facade. During staining, a roller is used: it is necessary to move from the bottom up, the movements should be stretching. It is recommended to apply two or three layers, after which the effect will last for a long time. Doing this yourself is easy if you first study the instructions and follow the advice.

Staining technique

It is important to note that not all plaster mixes are tintable. First you need to make sure that it is completely dry on the facade. Work must begin after eight to forty-eight hours have elapsed after the finish has been applied., it all depends on the type of material that was used.

Some types of mixtures cement base, so they can crumble and even flake off. The putty must also dry completely, after which the plaster relief can be painted.

It is important to study the characteristics and instructions finishing materials choose the right tools to be used. Pay attention to the shelf life paintwork, as an expired product will spoil the result.

• When using the dry brush technique, the wall can look more voluminous. This coloring is suitable for the relief parts of the facade and walls.
• If you want to achieve less contrast, and you need to smooth out the borders, use a rubber roller or a regular glove.
• For a metallic effect more the usual one will do sponge.
• But for working with thick paint, it is better to use a roller with a hard and short pile. Thanks to this, the effect of bark beetle is obtained.
• For the impression of blur on light tone darker paint is applied, which should dry, and only then a damp rag is used for rubbing.

Beautiful examples

Many people like the "bark beetle" type of painting effect, which is achieved through the use of a short pile roller. The grooves remain unpainted, so it turns out beautiful pattern. You can increase this difference, or muffle it, it all depends on personal wishes. In the first case, a coloring pigment is used, which is added to the plaster, the surface itself must be painted in the same color, but in a different shade.

The construction of a house always ends with finishing work on the facade.

One of the options to carry out such work is its painting, which is done after plastering the walls.

This technique allows you to achieve not only the beauty of the facade, but also the protection of the walls from the effects of various phenomena.

Paint for facade work must meet certain requirements, and the process itself must be carried out correctly.

When purchasing a paint for finishing a plastered facade, it is very important to pay attention to its characteristics, which in the future will provide a sufficient level of resistance to atmospheric influences and at the same time will retain their properties, regardless of the influence of air temperature, wind gusts and humidity levels.

Performance characteristics

Responsible for the immediate durability of the paintwork this characteristic.

In this dependence, materials are divided into two types:

• weatherproof;
• limited stability.

Only the first option is suitable for painting the facade, because only with its help it is possible to achieve the desired result regarding the protection of the surface of the house.

Weatherproof paints are characterized by vapor permeability for walls that are treated with plaster. Due to this property, after the appearance of condensate on the surface of the facade, it evaporates after a while and does not accumulate under the coating. After all, the accumulation of condensate promises the appearance of bulges on the walls and further leads to the destruction of the coating.

This property is checked after applying a layer of paint and is characterized by the sponginess of the material. This parameter depends on the type of binder that is in the composition of the paintwork.

In addition to vapor permeability, a very important indicator - resistance to UV rays, which most of all subject the layer to destruction. In addition, the resistance to sunlight ensures long-term preservation of the color and the appearance of the paint is always as freshly applied.

Facade painting

Do not neglect the adhesion characteristic, it provides reliable bonding of the paint structure and plaster on the facade. If the paint has a high adhesion index, then it is able to prevent the appearance of blisters and bulges. However, not only the properties of the material itself provide good adhesion, but also the right process preparing the surface of the walls before painting.

Another characteristic is water repellency.. This property provides protection to the facade from the appearance and development of fungi, moss and bacteria. Such paints and varnishes repel water, preventing it from soaking into the surface of the wall.

Last operational characteristic worth paying attention to is increased resistance to mechanical damage. It lies in the fact that after applying and completely drying the paint, the material is not subject to destruction, for example, it does not scratch or crumble.

Ease of application

Convenience of carrying paintwork is an important factor in this process. The technology of painting the facade on plaster requires the thinnest possible layer when applying the material.

This is due to the fact that a thick layer of paint is chipped off very quickly.

The paint must have a property that will not allow it to be absorbed into the surface of the wall when applied.

Also, this characteristic provides significant savings on the process of finishing the house.. Additionally, such paints are convenient during their application in that they do not form smudges and drops.

NOTE!

Considering that everything protective properties paint and varnish coatings are acquired after complete drying, it must have a high drying rate. This property allows painting under any weather conditions, even in the late autumn period.

decorative characteristics

This characteristic is important, because the painted facade provides beauty to the entire building. With this characteristic, there will be no questions if you select paint with high described indicators. This is due to the fact that the color properties of the paint directly depend on its durability.

Properly selected paint should not change its color when applied, as well as after some time.

Regarding the texture of paints, they are:

• matte;
• glossy;
• semi-gloss.

Variety of colors

The most suitable for painting a plastered facade are matte paints. They are able to hide any defects that are present on the plastered surface.

Is coloring necessary?

Many people wonder about the need to paint the plastered surface. You can answer this question if you consider in more detail the benefits that such an event provides.

The first and most important property that facade painting provides is a protective function.

Plaster is a rather vulnerable coating that is able to pass moisture and accumulate condensate, is destroyed by mechanical stress or after prolonged exposure to sunlight.

If mechanical damage or any other destruction is easily restored, then the absence of such properties as transmissibility and water repellency can cause significant damage to the walls of the house. The accumulation of condensate provokes not only the formation of mold and fungus, but also the destruction and decay of materials that are in the "pie" of the wall.

If paint is applied to the surface of the facade, corresponding to a high level of these characteristics, then many problems can be avoided. An additional advantage of using paint is the ability to create any of the design solutions.

Types of paints

How to paint the facade of a private house? There are several types of paints intended for facade decoration:

1. Silicate. The paint is based on liquid glass, which otherwise called silicate glue, as well as various mineral pigments and silicate type filler. Such a composition is able to provide durability, complete resistance to precipitation, even acid type and is by right the best option . On average, this type of paint can last more than 20 years. It has a high level of vapor permeability. Its only disadvantage is the lack of sufficient elasticity, which leads to the formation of cracks, and after the thermal expansion of the plastered surface, traces remain on the paint.
2. Lime. For the basis of the production of this type of paint used slaked lime . Such paint is washed off by precipitation and gets very dirty. Its merits include high level vapor permeability and resistance to the appearance of fungus. With regards to the variety of colors to choose from, it is very limited and is represented only by pastel colors.
3. cement. The cement variety of paint has all the features inherent in the lime variety, but have more high level of resistance to moisture and precipitation. In addition, it does not have a bactericidal effect, which allows the formation of fungi.
4. Acrylic. The basis of the composition of this type of paint are acrylic resins. Possesses sufficient level vapor permeability, but it is significantly lower than that of the silicate variety. She is characterized low hygroscopicity but high abrasion resistance.
5. Silicone. This type of paintwork is considered the most worthy option for painting a plastered facade. Thanks to it, the facade acquires hydrophobic properties., any precipitation and condensate flow down the walls without accumulating on the surface. Silicone variety provides free diffusion. Adheres well to any type of surface, resistant to prolonged exposure to sunlight and various adverse weather conditions. The paint surface is incapable of electrifying, which ensures the repulsion of dust and the surface of the facade does not get dirty so quickly.

Specifications

Choose the most suitable option it is possible, taking into account all the nuances in the aggregate, with regards to the climate of the area in which the house is located, the type of plaster and other parameters. But, as mentioned above, for private construction, a silicone type of paint is considered the most suitable, because. it provides complete protection against negative impacts and looks aesthetically pleasing.

Wall preparation stage

The painting of the facade begins with the process of preparing the surface of the walls. At this stage, further good adhesion of the wall paint coating is ensured.

First of all, intending to paint the facade, it is necessary to choose the right weather . You should choose a day in which rain, strong winds or temperatures below + 5 degrees are not predicted.

The wall preparation process is as follows:

1. First you need to remove the layer of paint, which is present on the facade (in case there is one). It all depends on the type of paint and its condition. If oil enamel was used for painting, then it is necessary to clean the entire surface of the wall. The easiest way to do this is with a building hair dryer and a hard spatula. If an acrylic variety was used, then it is allowed to apply acrylic water-based paint on top.
2. Next, it is necessary to assess the condition of the plastered surface. The wall, which is ready for further painting, must be leveled, while not getting dirty, not leaving dust on the hands and not crumbling when in contact with it. It is recommended, in the absence of the above criteria, to putty the facade.
3. Primer application is in a good way to give strength to the plastered surface and increase the degree of adhesion of the paint and the wall. The soil for such work is selected penetrating type.

Facade cleaning

Wall priming

Facade painting technology

For painting, use a pneumatic or electric spray gun, roller (medium length pile) or wide brush. Naturally, you will need to build scaffolding to provide access to the top of the house.

The painting process is as follows (photo below):

1. First of all, the paint is thoroughly mixed with a mixer.
2. The most convenient way to apply paint is with a spray gun. However, if such equipment is not available and a brush or roller is used for staining, then the application of paint is carried out with strokes. It is recommended to apply strokes in different ways: in the vertical direction, horizontally and diagonally. Despite such a peculiar method of staining, it is able to provide the maximum degree of uniformity of the future coating.
3. All types of paints for the facade need a two-layer application. The lime variety is applied in 3 layers.
4. The staining process should not have too long pauses. The paint, after it begins to dry, further creates a visible border between the part of the wall that was painted earlier and, accordingly, later.
5. Application of layers should be carried out only after the previous one is completely dry.
6. After painting, the walls are protected from dust particles and precipitation. To do this, cover them with plastic wrap.

Sectional device

Spray painting

Roller painting

Useful video

Video tutorial on applying facade paint to plaster:

Conclusion

Despite the simplicity of the process of painting the facade of a house on a plastered surface, even the smallest nuances should not be neglected. Each feature in such work is important and provides a high-quality and reliable result.

In addition to the need to obtain a durable coating that creates protection for the facade, it is very important to carry out the whole process in such a way that the facade also looks attractive.

In contact with

• work must have good elasticity. The notorious change in size (expansion and contraction) of the facade surfaces, which occurs as a result of a sharp temperature drop, turns out to be “fault” for everything.
• Paint for facades should have increased resistance to ultraviolet radiation, that is, the ability to long time keep its original color unchanged under the influence of direct sunlight.
• The paint must have increased resistance to abrasion. After all, the facade of the building, among other things, includes areas near doors, windows and the sidewalk, which are quite easily dirty and even wiped as a result of constant touching.

In addition to the qualities mentioned above, facade paint is also characterized by one more property: dullness. The fact is that on a glossy surface, all irregularities become more noticeable. At the same time, the matte surface is characterized by the ability to "hide" minor flaws: recesses, protrusions, chips.

Typology of facade paints

The modern market offers the consumer the following types of facade paints:

• silicate;
• lime;
• Cement;
• Acrylic;
• Silicone.

Let's consider each type in more detail.

Silicate facade paints

The basis of silicate paints for the facade is silicate glue (it is sometimes called " liquid glass"). The composition of paints also includes a special filler (usually also silicate) and various mineral pigments. This composition provides good resistance to ultraviolet radiation, wind and precipitation for a long time. Operational period such coverage is about 20 years. In addition to the advantages mentioned above, silicate paints have another important quality: good vapor permeability. Thanks to her, the painted walls practically do not get damp.

Among the disadvantages of silicate paints, we note poor abrasion resistance and low elasticity, sooner or later leading to cracks.

lime paints

As a basis for of this type paints used slaked lime. Virtues These colors are few. The most important among them is relatively low price. Due to their good bactericidal properties, lime paints guarantee the absence of fungal deposits even on the most damp wall. However, due to good vapor permeability, walls covered with a layer of lime paint will not become damp.

disadvantages lime paints have much more: such paints quickly get dirty, easily become unusable under the influence of precipitation, and their color range, in fact, is limited only to white and light pastel colors.

cement paints

Cement paints are a somewhat modernized version of lime paints: not slaked lime is taken as the basis for their manufacture, but Portland cement with the addition of various pigments. This paint gives the facade a slightly greater resistance to damp climates and precipitation. But unlike lime paints, cement paints cannot boast of a bactericidal effect.

Today cement paints are used very rarely, despite their low cost.

Acrylic paints

Acrylic facade paints today can be called the most popular product in its segment. Acrylic resins are used as the basis for this type of facade paint.

The reason for their popularity is their relatively low cost and a large number of merits. The only characteristic in which acrylic paints are inferior to paints made on a silicate basis is low vapor permeability, which can lead to excessive moisture formation. However, this disadvantage is compensated due to the almost zero hygroscopicity and resistance to abrasion.

Most acrylic paints are water-based, but there is also a certain group of acrylic paints, which are based on various organic solvents. The latter are recommended for use as a coating for very worn facades, on which the plaster does not hold firmly.

silicone paints

Silicone-based facade paints can be safely called the best option among all those mentioned. Silicone facade paints are characterized by the following virtues:

• The paint applied to the plastered facade of the building makes it completely hydrophobic. The walls literally repel moisture from themselves: both rain and fog simply flow down the walls, leaving no wet marks on the surface of the facade.
• The walls covered with silicone paint breathe. The fact is that the vapor permeability of the paint is ensured due to the abundance of the smallest pores in the paint layer.
• Excellent adhesion to all types of walls, including all types of plastered surfaces.
• Very serious resistance to ultraviolet radiation, any aggressive natural phenomena, sharp and frequent temperature changes.
• The facade, painted with silicone paint, practically does not electrify, and, therefore, does not attract dust.

Among shortcomings- high price and somewhat more modest indicators of wear resistance and elasticity than acrylic paints.

How to calculate paint consumption

Let us take the liberty of presenting a certain algorithm, with the help of which it is possible to make a more or less accurate calculation of the facade paint consumption per 1 square meter painted surface.

1. Calculation of the total area of ​​the facade to be painted. This is easy enough to do. The first step is to measure the length of the wall and its height. These indicators should be multiplied by each other - we get the total area of ​​\u200b\u200bthe wall. The next step is to measure the total area of ​​all windows and doors located on a given wall. The total area of ​​all openings is subtracted from the total area of ​​the wall. The calculation of the area of ​​​​facades of complex geometric shapes is carried out as follows. The facade is "divided" into simple rectangles. We calculate the area of ​​each of them. Then we add up the results.
2. Multiplying the facade area by the average paint consumption per 1 sq. meter. You can find this indicator on the packaging with paint - any manufacturer must indicate it on their product. The indicator obtained as a result of the calculation is multiplied by the estimated number of layers of paint (by 2, 3, etc.).

Facade painting instructions

Is there a step-by-step instruction for painting the facade? Let's try to consistently answer this question.

Surface preparation before painting

In the event that the plastered facade has already been painted, the preparation of the walls before a new painting directly depends on the condition of the old paint and its type. Let's say use acrylic paint on the water-based emulsion on the old paint of the same type is quite possible. Moreover, if the color of the new paint is similar to the color of the old one, the wall does not even need to be primed. If the wall is covered with a layer of oil enamel, it is preferable to clean off all old paint before applying new

The condition of the plaster should be assessed. The surface can be considered ready for painting if the plaster:

• does not crumble;
• does not leave marks on the palm;
• does not get dirty when touched;

If the wall or part of it does not meet these requirements, putty must be resorted to.

The facade should be primed with a deep penetrating primer. This will give the surface greater strength and significantly improve the adhesive properties of the paint.