How to choose façade paint for exterior concrete work

• Quick-drying, multifunctional, flexible paint with a rubber structure for exterior and interior use. A special coating protects products from moisture, acids, abrasion and even corrosion.
• Rubber paint not only provides effective surface protection, but also gives a beautiful aesthetic appearance. Thanks to its elastic consistency, it does not lose its properties even in extreme conditions from -300C to 1000C.
• This product has very good adhesion. However, it can be easily removed without damaging the surface.
• Rubber paint is wear-resistant and protects your buildings from adverse weather conditions such as wind or rain and works against corrosion. Prevents disintegration and destruction of the material. Protects surfaces from scratches.
• Rubber paint can be used on concrete, for wood and metal products, for roofs, glass, chipboard and fiberboard.

Proper painting of concrete walls: how and with what to paint indoors and outdoors

Painting concrete walls is a simple, affordable, effective and aesthetic option for finishing this type of surface. Despite the fact that the process is relatively simple and all stages of the work can be completed independently, to get the best result it is advisable to prepare - stock up on the necessary tools, understand the composition of the paint, and learn about the features of wall preparation.

Before painting concrete walls, you need to think carefully about everything - the composition is selected taking into account the operating conditions and functions of the room, the location of the wall (inside/outside the building), and personal wishes. The concrete monolith is prepared for painting - the old layers of finishing are removed, putty and primer are applied. Only after this can you begin to apply paint with a special tool.

The most popular and suitable compositions for painting concrete are discussed below, and the order of tasks is determined. If you have a minimum of knowledge and skills, doing everything quickly and efficiently will not be difficult.

How to paint: tips and tricks

Before deciding how and with what to paint concrete walls, you need to study everything carefully. The experts give fairly simple and effective recommendations to avoid common mistakes and achieve an ideal surface.

Things to remember while performing work:

• It is advisable to carry out all stages wearing safety glasses and, if necessary, a respirator. This way it is possible to avoid dust and microparticles of the dye from getting into the lungs, and to protect yourself from the pungent odor of the composition.
• All tools are prepared before work begins - the brushes are fluffed and checked for the presence of bristles, the rollers are soaked under a powerful stream of water, then wrung out and leveled. All packaging is removed, the instrument is neatly folded in an accessible place.
• The ceiling and floor at the joints with the wall are protected with masking tape - it will easily come off after all the work is completed. Then, if necessary, some places can be carefully touched with a thin brush.
• Concrete paint for walls is applied in a perfectly thin, uniform layer. A wall that was painted in three neat thin layers looks much more aesthetically pleasing and beautiful than one thick layer, which causes streaks to appear.
• Puttying of concrete walls is usually carried out in two layers: first with cement/gypsum plaster, then with a special finishing putty. This technology allows you to achieve a perfectly smooth coating.
• Each layer of paint is applied only after the previous one has completely dried.
• If the wall is new, then work can begin only after 28 days have passed from the moment of pouring.

How to paint concrete walls: do-it-yourself description of the work

In typical apartments, the walls consist of concrete slabs. Concrete walls with their rough surface can be emphasized by painting them without leveling. The apartment will be designed and renovated and will look modern. We’ll tell you in more detail how to paint concrete walls with various compositions.

Selecting materials

Painting a concrete wall is done with the appropriate composition. Acrylic finishes with the addition of latex resins have good adhesion to loose and porous surfaces. It does not allow moisture to pass through and lies flat on the surface.

Important! Oil paints also work directly on the concrete surface, but not all types. You need to take specific compositions for painting concrete.

When choosing paint, consider the following features:

1. The surface will be painted outside or inside the room. For interior work, more natural compositions based on water or natural oils are chosen. For external facade work, more synthetic ones are suitable, but less susceptible to direct sunlight and moisture.
2. Purpose of the premises. To paint a living room or bedroom, you can use acrylic interior paint; for kitchens and bathrooms with a humid atmosphere, waterproof compositions are used.

Previously, the wall was prepared before painting the concrete. Preparatory work included plastering, puttying and leveling. If a modern design is chosen, when the concrete surface is emphasized and not hidden, then there is no need to carry out special preparatory work. But you can paint a concrete surface without leveling right away only if the surface is perfectly flat.

Before applying paint, the concrete surface is covered with 1–2 layers of primer. The composition is taken for a specific paint. We recommend using a primer that contains an antiseptic. The coating will protect the walls from fungi and mold. The primer will enhance adhesion and the finish will last longer.

Concrete paint is applied in several ways:

• Using a molar brush or wide roller. The easiest way, but it takes time and effort.
• Using a sponge. The folk method. Thanks to this application, you can get a relief pattern on the walls.
• Using a spray gun. For interior work, the method is not the best, since splashes of paint will cover the entire room, including furniture. For exterior finishing, the option is the simplest and fastest.

When the paint composition and primer have been selected, you can begin finishing.

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Instructions for beginners

It’s easy to do the finishing touches without prior preparation using concrete paint with your own hands. The cost of such services from specialists starts from 350 rubles/m². Therefore, you will save a lot of money.

To work under concrete you will need the following tools and materials:

• Spray gun, roller or brushes;
• Special paint tray;
• Primer and coating based on the square footage of the room (take +15% just in case);
• Molar tape.

Work with a concrete composition is carried out in the following stages:

1. The fittings of doorways, ceiling and floor plinths are glued with masking tape. Sockets and switches are removed from the walls under the covering. Exposed wires are insulated using special tape.
2. If the concrete wall has small irregularities, they can be smoothed out using coarse sandpaper.
3. It is better to level walls for finishing with large differences using plaster; the grooves are closed with cement-based putty.
4. A primer is applied to the walls under the paint using a roller or brush. You need to apply the composition in 2 layers, after letting the first one dry.
5. After the primer layer has dried, begin painting on the concrete. Concrete paint is applied in a thick layer, so small irregularities will be covered.
6. The finishing composition can be applied in 2 layers, but before the second coat the first one is allowed to dry completely.
7. Hard-to-reach areas of the walls are tinted: behind radiators, in corners.

The concrete paint must dry completely. Typically drying time depends on the selected composition. For acrylic - up to 24 hours, oil - up to 47 hours.

If you follow the technology, then there will be no questions about how to paint the walls. The design will serve its owners for at least 5 years, since the coating is not afraid of mechanical damage.

Material selection

When deciding what paint to paint concrete walls, you need to consider a lot of factors. First of all, they consider the main varieties, their advantages and disadvantages, compliance with the functions of the room, and cost.

When deciding how to paint a concrete wall outdoors, they give preference to synthetic and durable compounds that are not afraid of moisture, sudden temperature changes, and sunlight. But for an apartment, it is better to choose environmentally friendly paint based on natural oils or water - here external negative factors will not affect the surface, but it is very important to choose an option that is safe for health.

The purpose of the room where painting is carried out is also important. So, for the kitchen and bathroom, moisture-resistant compounds are chosen, but for the bedroom or living room, acrylic-based interior paint is also quite suitable. Moscow and the regions today offer a fairly large selection of materials on the market, so choosing the right one will not be difficult.

Oil paints

This type of composition is usually used when deciding what to paint a concrete wall on a balcony or on the street. This is the best option for outdoor work, since the paint is quite toxic and has an unpleasant odor, which then takes a long time to dissipate.

Main advantages of paint:

• Availability in terms of price
• High level of resistance to moisture, temperature, various external factors
• Excellent coating strength, durability
• Simple and easy care – the paint can be washed even with cleaning agents

Among the disadvantages of oil compositions, it is worth mentioning the long drying time (at least a day), low level of elasticity and the risk of cracks, color instability (due to drying oil turning yellow over time).

Water based

Aqueous dispersions and emulsions are ideal for painting concrete walls in an apartment. The materials do not contain toxic elements and are often used for finishing interior surfaces. Only some types are designed specifically for covering facades, which must be indicated on the label and instructions.

The cost of the paint is relatively low - the price is an order of magnitude higher compared to oil-based compositions, but within reason.

Acrylic

This type of material is relevant for performing different types of work - paint for concrete walls is used both outside and inside. The packaging must have a mark indicating the operating conditions of the composition - covering the internal wall, facade, ceiling, etc. (Be sure to specify when choosing). Acrylic paints are often used even for European fences and for artistic wall painting.

The main advantages of an acrylic-based composition:

• Environmental friendliness and safety
• Ability to achieve any shade and color
• Vapor permeability
• Resistance to external negative factors, mechanical influences
• Preservation of color for a long time without changes in tone
• Good elasticity of the coating

The paints are not cheap, but they offer an ideal ratio of quality and price, which is why they are popular in the market for repair and construction materials.

Silicate

This concrete paint is made on the basis of liquid glass. The resulting coating is very durable and reliable, so the composition is often used for finishing facades.

The main advantages of silicate paints:

• Resistance to any type of chemical attack - acid rain, reagents, etc.
• Fire resistance
• Long-lasting color retention
• Biological resistance - the composition does not allow fungi and mold to multiply

Rubber paints are often chosen for exterior finishing. Epoxy paints are relevant for concrete floors, as they are not afraid of external influences. If you need to protect a building from destruction and fire, choose fire-resistant compounds. But textured or textured concrete paint for interior walls will be an excellent decor.

Impregnation for concrete

Before painting, it is advisable to coat the wall with a special product. A protective layer of impregnation will protect the surface from dust, moisture, and various aggressive environments. Impregnation penetrates into the very structure of the material, strengthening it. Impregnations are produced based on epoxy resins, polyurethane, acrylic, and other substances.

Paint color

When choosing a color for painting concrete, we are guided by the classical rules of design: light colors make the space visually larger and wider, dark colors make it narrower and smaller. All colors are divided into shades of the warm and cold spectrum.

There are a huge variety of options for any color - only white is presented in dozens, or even hundreds. The choice is made on the object, applying palettes to the surface and assessing the play of light, imagining the space in the imagination or modeling the room using special programs.

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A special paint is used to paint facades made of concrete. It is its individual composition that ensures high adhesion between the paint and the surface being painted and long-term operation of the painted coating. We’ll talk further about how to choose high-quality concrete paint for working on the outside of a building.

Table of contents:

1. Concrete paint - features and benefits
2. Concrete paint for exterior use - varieties
3. Rubber paint for concrete - characteristics and description
4. Facade paints for concrete for exterior use: features of choice

Concrete paint - features and benefits

Using concrete paint not only improves the aesthetic appeal of the coating, but also improves its service life. Paint can hide minor defects and surface irregularities. The use of concrete as exterior wall finishing has many advantages, namely:

• high level of strength;
• resistance to mechanical stress;
• resistance to corrosion;

• resistance to ultraviolet radiation;
• frost and wind resistance;
• good vapor permeability and moisture resistance.

However, the appearance of the concrete surface leaves much to be desired, so in order for the facade to become presentable and attractive, it is recommended to paint it.

Paint for concrete can provide reliable protection of the base from biological irritants and moisture. The process of choosing paint for concrete is quite complicated, since the demands placed on this material are too high.

The paint that is applied to the concrete base, which is located outside the room, must have the following properties:

• moisture resistance - the first and most important requirement for paint is to prevent moisture from entering the room;
• fire safety and resistance to ignition - the paint should not ignite when the slightest spark appears, in addition, it should not spread fire;
• high level of adhesion with a concrete base - this property helps to improve the adhesion between the paint and the surface; the higher the adhesion, the longer the paint stays on the base; if the level of adhesion is low, the paint peels off and flakes off;
• high resistance to light - if the paint resists ultraviolet radiation well, then it does not fade or lose color over time;
• resistance to temperature changes - this property is explained by the fact that the surface to be painted is outdoors, and therefore is subject to sudden changes in weather conditions; if the paint is unstable in the face of frost or heat, then its properties deteriorate and the coating loses its attractiveness; paint for concrete must have the properties maintaining temperatures in the range from -40 to + 40 degrees;
• the vapor permeability of the paint allows it to resist the accumulation of condensation on its surface, the walls on which the paint coating is applied breathe, which means there is a healthy microclimate in the room, the paint must have zero moisture absorption and at the same time must be vapor permeable;
• resistance to mechanical factors is explained by the fact that the paint is used outside, and during strong winds or rain there is a risk of damage, if it is unstable to mechanical influence, even a fairly strong blow should not damage the paint;
• the surface on which the paint is applied must be resistant to contamination; this factor depends on the density of the paint composition; in addition, the composition must contain antibacterial components that will help it resist the spread of mold and mildew.

Concrete paint for exterior use - varieties

In relation to the method of dissolving paints, they are divided into:

1. Compositions that use water to dissolve - synthetic resins are used to make this type of paint. In addition, they are characterized by the presence of pigments, additives and fillers in their composition, which are diluted exclusively with water. Please note that paints of this type are used only at positive temperatures. Water-soluble paints allow steam to pass through well and are resistant to ultraviolet radiation, temperature changes and mechanical stress. The service life of a coating painted with this type of paint is more than 10 years.

2. Paints that are diluted with organic solvents in the form of white spirit, solvent or xylene. Coloring is carried out at any temperature and even at high humidity. The disadvantages of using this type of paint include increased toxicity and ease of ignition. Therefore, they are less popular than the first option.

In relation to the main ingredients of concrete paints for outdoor use, they are:

1. Silicate - characterized by the highest level of adhesion. They tolerate exposure to ultraviolet radiation and temperature changes well. In addition, such paints do not require a long drying time and have a varied color palette. To obtain a high-quality coating, silicate paint is applied in three layers. Since one layer is not enough to hide all the irregularities and defects of the concrete base.

2. Another cheap option is to use oil-based paints. They are resistant to moisture and ultraviolet radiation. But at the same time, oil paints have the following disadvantages:

• duration of surface drying;
• the need for preliminary preparation of the base for painting;
• low vapor permeability.

3. Acrylic paint for concrete - has excellent abrasion resistance. In addition, such paints have good elasticity, they are harmless to health and environmentally friendly. Acrylic-based paints cover the surface well, are economical in consumption, resistant to moisture, but at the same time vapor-permeable.

The only downside to using acrylic paints is their fairly high cost compared to other alternatives. The price for acrylic paint on concrete for exterior use is very high if its composition is dominated by a 100% acrylic binder.

4. Wear-resistant latex paints for concrete are a type of acrylic paints, but their composition is dominated by the presence of a less expensive latex dispersion. Such components are compositions in the form of PVA glue, copolymers or acrylic.

The cost of this type of paint is cheaper than that of acrylic paints, but the properties are almost the same. The only drawback of latex paints is their shorter service life than acrylic paints. After a certain time, fading, peeling and contamination of the surface occurs.

5. Water-based - they are easy to apply, have low consumption, and come in a variety of colors. This type of paint is quite popular due to its attractive cost. The disadvantages of this type of paint include:

• low level of resistance to moisture;
• instability to mechanical damage;
• ease of abrasion;
• lack of protective properties;
• instability to chemical compounds and temperature changes.

Rubber paint for concrete - characteristics and description

Rubber paint is classified as a universal composition, as it is suitable for painting not only concrete surfaces, but also wood, metal, slate, roofing, tennis courts, etc.

This kind of paint is called rubber because of its high level of elasticity. This material has a short history and has not yet received adequate demand in the modern market of paints and varnishes.

Rubber paint differs from other types of paint in that it has a flexible film of polymers that forms after the paint composition has completely dried. If the temperature in the environment rises, then it expands; otherwise, it contracts. Thus, cracks and chips, which are characteristic of an oil coating, do not form on the surface.

To produce rubber paint, a water-dispersion mixture is used, which includes an acrylate polymer. In addition, the paint does not contain organic solvents or other environmentally harmful substances.

Another component of rubber paint is the color pigment, thanks to which it acquires a particular shade. After applying paint to the concrete base, it becomes matte. The coating does not have shine, but becomes quite pleasant to the touch.

Among the advantages of rubber paint for concrete are:

• high elasticity, resistance to cracking and deformation;
• good level of adhesion, thanks to which the paint does not flake off or peel off;
• resistant to temperature changes, so can be safely used for outdoor work;
• resistant to ultraviolet radiation;
• is a kind of waterproofing material;
• vapor permeable;
• environmentally safe, harmless to human health;
• convenient to apply.

The paint use interval is from -55 to +60 degrees. This type of paint covers basement surfaces, areas of blind areas, walls, garden paths, gazebos or fences.

Among the disadvantages of rubber paint, it should be noted that the technology for its application is correct. If you apply paint in a thick layer, it will not perform all the functions assigned to it, so the material is applied in two or three very thin layers.

Facade paints for concrete for exterior use: features of choice

Please note that when choosing paint for concrete, its cost will not be a decisive factor, since, first of all, you need to pay attention to the quality of the material. There are two options for concrete paints:

• formulations that provide a smooth texture;
• textured mixtures.

The second option is characterized by good coverage of defects and cracks on the surface and a more dense structure.

To characterize the decorative side of concrete paints, two concepts are used in the form:

• tinting, which allows you to achieve the desired shade by mixing several colors of paint;
• reflective characteristics - they allow the paint to reflect light radiation; depending on this criterion, paints are glossy, matte, or semi-matte.

If you plan to paint a concrete facade, it is better to give preference to paint with a matte effect. Since they have higher vapor permeability, which is especially important for the walls of a building. For the purpose of decorating certain parts of the surface, molumate paints with a slight sheen are used.

Since the concrete surface is a material that poorly absorbs other mixtures, the paint must have good hiding characteristics. It is preferable to apply it in several layers to completely hide the texture of the plaster.

Please note that paint adheres better to a cement base than to a concrete surface.

Depending on the type of film former, paints for concrete are acrylic, water-based, acrylate, silicone, latex, etc.

Concrete surfaces that are subject to high mechanical stress should be coated with special epoxy paints. A special category includes coatings with high resistance to mechanical damage.

If you plan to finish the façade, it is better to give preference to acrylic or silicone paint. It is possible to use silage paints or acrylic compounds.

Most paints have good vapor permeability, thus improving and maintaining a healthy indoor environment. But keep in mind that the material from which the walls are made must also be vapor permeable.

The consumption of paint on concrete depends on its thickness and consistency; this value must be indicated by the manufacturer in the technical specifications of the composition. In order to buy paint for concrete, it is better to go to a specialized store, where experienced specialists will help you choose the composition in accordance with the individual characteristics of the surface to be painted.

Before applying paint, it is necessary to carry out preparatory work to clean the surface from dirt and dust. In addition, to improve the adhesion of paint to the surface being painted, it is recommended to pre-treat the concrete base with a primer.

To make your own primer, simply dilute one part of the paint with ten parts of an organic or water-based thinner. After the applied composition has dried, the surface should be painted. During the work process, it is better to use a brush, roller or spray gun. You should not use brushes with natural bristles, as under the influence of paint they begin to swell and leave marks on the surface.

Painting the base part has its own nuances, and in particular, it is not recommended to use paints whose instructions do not indicate that they are suitable for painting the base. The composition for the plinth must be of higher quality, since this part of the building is too exposed to aggressive environments, harmful microorganisms, etc.

To improve the appearance of the building, it is recommended to periodically clean or wash the base part, which means the paint must be resistant to mechanical irritants and high humidity.

Working with the surface

Many craftsmen advise paying serious attention to the question of how to prepare a concrete wall for painting. New surfaces may only require the application of impregnations and primers; old surfaces may only require the removal of layers of paint and varnish compositions, repairs, leveling, putty, etc.

If you just prime the new surface and paint it right away, it will turn out a little rough (which, by the way, is an advantage for many, acting as a kind of interior solution). New walls are painted at least a month after the construction of the structure.

Preparatory stage

Before you paint a concrete wall (without putty or with it), you need to study everything carefully. If the wall requires cleaning and repair, there are chips/cracks, or other deformations, the work must be done correctly.

General work plan for preparing the wall:

• Checking the moisture content of the coating - a meter by meter piece of polyethylene is glued to the concrete with tape. If condensation appears on the film, the wall is wet, you cannot paint and you still need to wait.
• Removing the old coating - with chemicals, a spatula, or sandblasting.
• Cleaning the wall from dirt, soot, dust - with ordinary water. A calcined solution can help remove soot; rust can be removed with a 15% solution of copper sulfate. Large stains are treated with rosin varnish.
• All small roughness/irregularities are removed with a piece of emery or pumice.
• Coating the wall with an acid-saline solution (fluate) for the purpose of strengthening.
• Applying primer.

They shuffle their feet on the floor, click their heels and drop burning cigarettes.

It is easier to remove old paint from the floor with your own hands than from the wall. The remover does not run off and softens the surface over time without additional applications. The most convenient way to clean off chemical residues and dirt is with a jet of water under pressure directed from a hose.

Paint for concrete

The main destructive effect on the floor is exerted by:

• people's feet rubbing the surface when walking;
• in offices and public spaces, the pressure of thin heels - stiletto heels;
• heavy furniture creates static pressure;
• visitors may drop heavy objects and burning matches and cigarettes.

Of all the paints for concrete, the following have qualities that satisfy all requirements:

• epoxy;
• polyurethane.

Both compositions can be applied by rollers and spray gun. Epoxy enamel is prepared from two components immediately before application. It is difficult to remove, but you can apply the next layer with similar components after cleaning the surface from dirt.

The polyurethane composition is used for painting and creating self-leveling floors. It is tinted when purchased in a store or before use.

Paint selection

Paint color

When choosing a color, you need to keep in mind that light colors visually increase the space, while dark colors reduce it. Accordingly, light colors are better for small rooms, and dark ones for large ones. Colors are divided into cold and warm. The former include blue and green, the latter – yellow, red, and violet.

Type of paint

Alkyd and oil paints are not suitable for concrete coatings. It will be necessary to apply several layers of such paints, but even in this case it will not be possible to achieve high-quality coloring for the long term. Very soon you will have to repaint the surface again.

Suitable for painting concrete walls:

1. Epoxy paints. They are highly resistant to moisture and wear. However, such coatings require good ventilation of the room.
2. Latex and acrylic based paints. Resistant to temperature changes and low toxicity.
3. Glossy paints. Advantage: attractive appearance. Disadvantage: poor resistance to mechanical damage. In terms of quality and environmental compliance, the best choice is products made in the USA.

Epoxy, latex or acrylic based paints are suitable for painting concrete walls.

Note! High-quality compositions are ready for use without any additional manipulations (dilution), and they can be used to paint walls even in cold rooms.

When choosing paint, you need to pay attention to the presence of an antibacterial component in its composition. If present, the surface will be protected from mold and mildew.

Impregnation for concrete

To create a protective layer that protects the surface from moisture, dust and aggressive environments, you can use concrete impregnation. Penetrating deep into the material, impregnation strengthens its structure.

Impregnations are made on the basis of acrylic, polyurethane, epoxy resin and other materials. The surface dries out a few hours after it has been treated with impregnation. Impregnations can be either colorless or colored.

How to paint a concrete wall: choice of paint, procedure

Before painting a concrete wall, it is not at all necessary to acquire serious professional skills in carrying out repair work. You can cope with the task yourself if you use the advice and follow the instructions. Painting walls is one of the most budget-friendly finishing options, and the ability to do without the services of professionals cuts costs by about half.

Water based paints

Aqueous emulsions and dispersions are suitable for painting concrete walls. These materials contain practically no toxic components. Water-based emulsion is usually used for interior finishing work, and some types of water-dispersion paint are produced specifically for coating facades. The purpose of the composition is always indicated on the label. Pros:

• ease of use,
• no smell,
• short drying time (several hours),
• environmental friendliness,
• possibility of independent tinting.

The cost of these materials is higher than their oil-based counterparts, but still quite affordable.

Acrylic paints

The material is used for various types of finishing work, including painting concrete walls inside and out. Manufacturers of high-quality acrylic paints always make marks on the packaging, such as: “for facades”, “for ceilings” or “for walls”. When choosing, pay attention to these clarifications. Such paints are also used for artistic painting of walls and fences. Advantages:

• environmental friendliness,
• resistance to mechanical stress,
• vapor permeability,
• color stability,
• possibility of obtaining any shade,
• elasticity of the coating.

These paints cannot be called cheap, but the price-quality ratio has made them very popular in the finishing materials market.

Silicate paints

Liquid glass is used as a base in the production of coloring agents. The resulting coating is extremely durable, which makes it possible to use silicate paints when finishing concrete facades. Pros:

• resistance to chemical attack (reagents, acid rain),
• color stability,
• fire resistance,
• biological resistance (prevents the appearance of mold and other microorganisms).

It should be noted that this coating is not only resistant to abrasion, it is almost impossible to wash off. The protective properties are very high. The composition contains toxic components, so when working with silicate paint it is important to protect your respiratory system.

Rubber concrete paint is suitable for exterior finishing; Epoxy-based material is often used to coat concrete floors; it is not afraid of temperature changes and other weather phenomena. Fire-resistant paints will protect concrete walls from destruction in the event of a sudden fire, and textured or textured paints will be useful for original decorative finishing of the room.

Preparatory work

Before painting concrete walls, you need to carry out a number of activities aimed at preparing the surfaces.

Required tools and materials:

• primer;
• putty;
• electric drill equipped with a special attachment;
• dye;
• roller;
• masking tape;
• small and medium brushes;
• painting tray or mesh;
• ladder;
• coarse sandpaper (you can use a grinder);
• fine-grained sandpaper (for finishing work).

Surface preparation

1. The first thing to do is check the moisture content of the coating to be treated. You cannot paint walls if less than a month has passed since the construction of the concrete structure. To check the humidity, you need to tape a sheet of plastic film (size meter by meter) to the concrete surface. If traces of condensation appear on the polyethylene during the day, the humidity is increased.
2. If the wall has been previously painted, the old layer must be removed. To do this, you can use a spatula or chemicals (for example, alkali). Sandblasting is also effective.

Remove the top layer of paint using a drill

1. The wall must be thoroughly washed from dust, soot and dirt. Dirt and dust are washed off with plain water. Soda ash solution will help remove soot. Rust can be removed using a 15% solution of copper sulfate. If the stains are large, it is recommended to treat them with rosin varnish.
2. Small irregularities and roughness on the wall need to be leveled using a piece of pumice or emery.
3. To strengthen the top layer of concrete, an acid-salt solution (fluate) should be used.

Puttying walls

Before painting the walls, they need to be puttied. The putty is applied in a couple of layers. The starting layer evens out the main unevenness, and the finishing layer evens out minor roughness. The second layer should be especially smooth.

The selection of putty is carried out depending on the humidity of the room. Dry gypsum mixtures are suitable for dry rooms. If the room is damp, it is recommended to use dry cement mixtures.

Instructions for making putty:

• fill the container with water;
• pour the required amount of dry mixture into the container (we find out the exact proportion by reading the recommendations on the packaging);
• Stir the mixture with water well using an electric drill.

Please note: the putty must be done in exactly the order indicated - first water, then the dry mixture - otherwise a solution sediment will form at the bottom.

After applying the first layer of putty, you need to take a break and wait for it to dry completely. The waiting time can be found in the instructions, since different compositions dry differently.

Painting the walls

1. We use masking tape. It isolates adjacent surfaces (floor, ceiling) from accidental paint.
2. Before painting, remove any dust that has accumulated on the walls using a damp cloth.
3. We use safety glasses to prevent paint from getting into our eyes.
4. Pour the mixture into a clean container and stir until the paint becomes uniform.
5. We dip the brushes so that the layer of paint on it is as uniform as possible. If we use a roller, then a special paint tray or mesh will come in handy. With their help, excess paint is removed from the roller. If we use a brush, then every time we expect excess paint to flow into the container.
6. It is best to paint with a roller and use a brush where the main tool is missing.
7. Before starting painting, the roller and brush must be slightly tousled and rinsed under running water. You also need to make sure that there are no loose bristles on the tool.

1. Dip the roller in paint. Then spread the layer over the paint bath.
2. Distribute the paint carefully and evenly over the surface. It is recommended to cover the failed layer with another one.
3. You need to start painting from the top of the wall, working downwards. The trajectory of movement should follow the letter W. If the surface is rough, the starting layer is applied in the shape of the letter M, and the finishing layer - from top to bottom.
4. Re-use of the roller is possible only after the tool has been in a container with clean water for 2 days.
5. After removing the masking tape, use a thin brush to carefully align the edges of the painted surface.

Painting a concrete wall will not be very difficult. However, you will need care and diligence, as well as careful compliance with the instructions.

Vapor permeability and moisture resistance are important for external walls

For finishing the facade, paint with certain characteristics is selected:

• good adhesion to concrete;
• repels water;
• allows air to pass through.

The most popular materials used for external walls are:

• silicate;
• silicone;
• acrylic.

We paint on concrete with our own hands
Enamels are short-lived. They are difficult to remove before the next painting. The walls underneath do not breathe, and the microclimate inside the house is disrupted.

Frost-resistant and wear-resistant paint is suitable for paths in the yard and parking areas:

• epoxy;
• polyurethane;
• rubber.

It creates a durable hard film that is resistant to abrasion and physical damage. It repels water well and protects concrete. The remover to remove it during subsequent repairs is selected according to the type of composition, and it is easy to remove old paint using a chemical method with your own hands. It is difficult to remove the coating mechanically with these water-soluble mixtures.

Requirements for dyes

Concrete paint for street work should be selected taking into account the specific operating conditions. These are the ones you need to pay attention to when purchasing .

1. Moisture resistance. The coating must prevent the penetration of moisture.
2. Light fastness. Characterized by paint resistance when exposed to ultraviolet radiation.
3. Fire resistance. The composition of the raw material should not ignite in a fire, much less contribute to the spread of fire.
4. Vapor permeability. This property provides oxygen access to the surface and eliminates the accumulation of condensation on it.
5. Adhesion. The intermolecular effect of the coating on concrete reflects how well the paint will adhere to the surface.
6. Wear resistance. Due to the large mechanical and dynamic load, the endurance indicator must be high.
7. Drying. The paint should dry for a minimum amount of time.
8. Covering power. This indicator indicates the consumption of raw materials to cover 1 m² of surface.
9. Temperature changes. The ability of the coating to withstand changes in air temperature.
10. Manufacturability. Possibility of painting in a variety of ways.
11. Resistance to pollution. The denser the paint, the less it will be exposed to contamination.

Compliance of raw materials with these requirements will ensure a long service life of the concrete surface.

The main thing for finishing materials is adhesion

Manufacturers offer various paints. They have their drawbacks. High-quality and durable compounds are expensive. They fully pay for themselves in terms of service life and the ability to paint concrete with your own hands. My friend collected approximate characteristics for selection in a table.

We paint on concrete ourselves

Main types

Today, manufacturers offer a wide range of paints for outdoor concrete surfaces. They all have different characteristics, differ in manufacturing technology and the base used. Therefore, before you start painting, you should decide what type you need.

Acrylic is the most popular for finishing work. It contains polyacrylates and their copolymers. It is characterized by:

• environmental cleanliness and safety;
• good adhesion to the concrete surface;
• quick drying;
• high wear resistance;
• economical consumption;
• ease of care of the painted surface;
• wide range of colors;
• long service life.

The main disadvantage is the rather high price of such a composition.

Oil - belongs to the category of economical building materials that are widely used by users. The composition includes alkyd resins, synthetic and combined drying oils. The advantages of the coating include:

• strength and wear resistance;
• good adhesion;
• easy care;
• the painted surface is resistant to moisture.

The paint contains toxic solvents, which is unsafe for people prone to allergic reactions. The oil coating has poor elasticity, so it cracks with temperature fluctuations.

Water-based paints are made from a water base, suspension and binding components. The ratio of these components differs depending on the required characteristics. For this coating, it is important to comply with storage conditions. Its main advantage is environmental safety. In addition, there are the following advantages:

• has no odorous volatile substances;
• is able to retain the applied layer of paint for a long time after drying;
• has a wide range of colors and shades;
• prevents the development of mold and bacteria.

You should not work with this coating in rainy weather. And before using it you need to mix it well.

Polymer - gives concrete, in addition to protective properties, good decorative qualities. It is created on the basis of acrylic, polyurethane or epoxy. The paint is used in sales areas and industrial premises. The polymer coating is different:

• low cost;
• wide range of colors;
• high resistance to chemical reagents;
• the surface after coating is suitable for use within three days;
• ability to use at extremely low temperatures.

A negative feature of this material is the limitation in the methods of application to concrete structures.

Water-epoxy - is a composition consisting of two water-based components. When hardened, the coating creates a film on the surface that protects from external influences, hides defects and imparts decorative qualities. The raw material retains its original color for a long time. Water-based epoxy paint has:

• resistance to chemical compounds;
• does not have a sharp, unpleasant and difficult to ventilate odor;
• increased adhesion to the concrete surface;
• especially decorative depending on the application technique.

The coating prepared for use must be used quickly. Replacing the color with another will be problematic. The price of paint is not the most budget-friendly.

Rubber - this coating appeared relatively recently. As a result of its drying, a flexible polymer film is formed. As the air temperature decreases, it contracts, and as the air temperature increases, it expands. This protects the material from chipping and cracking. The paint base is a water-dispersion solution with acrylate polymer. Unique performance characteristics include:

• ease of application;
• resistance to temperature changes;
• ability to perform waterproofing functions;
• ability to withstand exposure to ultraviolet rays.

It is important to apply rubber paint to the surface correctly. If painting is done incorrectly, the film may peel off.

Rubber-based paints for concrete surfaces

Over the entire period of operation, the concrete surface is subject to negative atmospheric influences and loads, as a result of which aesthetic characteristics are lost. Therefore, to protect it and impart unique decorative properties, it is advantageous to use rubber paint, which has high elasticity, frost resistance and preservation of color shades.

Preparing the surface for painting

Before you paint outdoor concrete with your own hands, you need to prepare the surface. This must be done, then the colorful material will stay on the plane for a long time. The preparation is as follows:

1. It all starts with cleaning the concrete base from debris, dust, dirt and greasy stains. If there is old putty or paint on the surface, their condition is assessed. If necessary, old layers are removed. Use a chisel or hammer to remove the tiles.
2. All identified sinkholes, cracks and potholes are sealed with special repair mixtures. The repaired areas are leveled with a grinding machine or fine-grained sandpaper.
3. First, all damaged areas are treated with a primer, and then the entire surface. This improves the adhesion of the coating and concrete and reduces paint consumption. The primer is applied in 1-2 layers, each thoroughly dried.
4. A concrete structure without any traces of cracks or pores is ready for painting. The work is carried out based on the recommendations of the paint manufacturer.

Vadik removes the old paint and applies a remover

While preparing the walls and floor in an old garage for painting, Vadik tried all the common methods with his own hands. He started with my suggestion from the most labor-intensive and reached the simplest:

• mechanical using a grinder and attachments;
• thermal with local heating;
• chemical using removers and solvents.

Selecting paint for concrete

First, my friend used a petal circle on a wire brush. He scratched the coating layer, sometimes along with the cement. This raised a cloud of dust and required physical strength. Vadik had the ability to work with power tools. He protected his eyes with glasses and wore a mask.

Advice! Moisten the area to be treated with water from a spray bottle, there will be less dust. Just don't fill it too much.

I felt sorry for my stubborn friend. I brought him a metal spatula and a hair dryer. Now he heated small pieces of the old finish and removed it softened. Part of the composition burned out, emitting acrid smoke. That's why he didn't take off his respirator.

After a while, Vadik gave up. He found this method good for winter work. It's already hot in the summer.

I brought the pre-purchased liquid from the car. The remover is selected according to the type of paint. It is applied to the surface and, entering into a chemical reaction, softens the paint. Sometimes you have to remove everything in several steps. A metal spatula and a respirator are necessary in this case. The strong odor of the solvent may damage the respiratory system. The softened material must be removed with a hard blade.

Painting a concrete walkway

Your dacha area will quickly be transformed if you use paint for concrete paths outside. This is a great addition to a country house that will make the decor interesting. The main thing is to correctly decide how to paint the concrete for the paths . There are two options:

• paint the finished concrete path;
• paint the concrete before laying.

The main disadvantage is lack of abrasion resistance. Painting makes it possible to periodically change color, protect concrete from water penetration, thereby extending its service life. Painting technology:

1. Thoroughly clean the surface of any contamination.
2. Apply primer if necessary.
3. Once the primer is dry, you can begin painting.

The paint is applied in several layers, allowing each layer to dry thoroughly. Painting is carried out using a brush, sprayer or roller. After painting, the concrete path is left to dry. To prevent the surface from fading, it is worth applying a good concrete sealant over the paint. The coating will last a long time if the concrete paths are thoroughly washed periodically.

Safety precautions

Even though painting concrete structures seems like a simple task, the risk of injury is quite high. First of all, you need to prepare the material and tools:

1. All devices must be in working order. This is especially true for reused tools.
2. You can only use paint that has not expired.
3. For work at the top, you should use a ladder or stepladder.
4. Painting should be carried out wearing protective clothing, gloves and a respirator.
5. Paint and primer should be transported and stored only in closed containers.

Clothes must be removed upon completion of work. Wash off any paint that gets on the skin with a special solvent, then treat the area with warm water and laundry soap.

Paint manufacturers

When choosing a coating, you should focus on such characteristics as:

• color fastness;
• environmental friendliness;
• frost resistance;
• moisture resistance.

Finnish is one of the most famous on the Russian market, in great demand.
The products of this company can satisfy the requirements of any consumer. Acceptable quality and competitive price are characteristic of the domestic enterprise VGT. The paint has good adhesion and can be used at low temperatures down to -10 ºС. The range of application of the coating is extensive. The paint of the Slovenian company Belinka has minimal susceptibility to any contamination. The coating repels water and dirt and prevents condensation. It can be tinted in rich and pastel colors. Due to the most economical consumption of raw materials, Dulux brand products are popular. Latex emulsion and special additives prevent fungal colonies and salt stains from appearing on the surface. The paint is harmless and easy to apply.

The best rubber paint for concrete work

This coating improves the properties of concrete. The film does not change the mechanical properties of the base and is applied using multilayer technology with intermediate drying of each layer.

Maxima

The coloring component is water-based, its purpose is to cover various substrates both indoors and outdoors. The rubber mixture is not recommended for use when processing horizontal surfaces that are subject to mechanical stress.

• surface dry to the touch – 50-60 minutes;
• under the second layer – 12 hours;
• film formation – 24 hours;
• gaining maximum strength – a week.

If operating conditions deviate from optimal conditions, the drying time may be reduced or increased. Consumption varies between 100-600 ml/m2, the product is applied with a roller or brush. Mechanical application using an airless or pneumatic spray is also possible, but in this case the consumption increases. Price – 550 rub.

Important! The paint is vapor-permeable, but if the concrete has not withstood the required period and there is a lot of moisture in it, if it comes out en masse, bubbles will appear on the coating, after which it will simply begin to be torn off from the base. If the paint comes off with a piece of concrete, then it is not a paint problem, but a concrete problem.

How and with what to paint concrete on the street?

Timely painting of outdoor concrete will help protect the durable material from self-destruction. The concrete mixture, when hardened, has a porous structure, so prolonged exposure to a humid environment can be detrimental to reinforced concrete. Structures erected on the street react especially strongly to destructive factors. Special coloring compounds will help protect the structure from destruction, give it an aesthetic appearance and protect it from the negative influence of the environment.

For what external works can concrete paint be used?

Exterior plaster paint is suitable for painting the following surfaces:

• plinths of residential and non-residential buildings;
• cast steps;
• monolithic fences;
• concrete facades.

Painting compositions provide durable coating and reliable protection of the base from adverse external influences. High-quality Italian San Marco paints have all the necessary properties and are presented in a wide range in a store in Moscow.

Tools and materials

Working equipment for the classic painting procedure:

• roller or spray bottle;
• paint brushes, scrapers, sanding material;
• bath for dye.

The high-quality painting procedure requires the use of the following products:

• dye selected for the intended use;
• high-quality degreaser for concrete surfaces;
• primer to improve adhesion;
• sealant.

If the process of painting concrete is carried out near flower beds or a garden, you need to purchase plastic film to cover the green area. This manipulation will protect the vegetation from contact with the chemicals used.

Paint: types and characteristics

There are two ways to paint a concrete wall or other material surface:

• Pigment the concrete mixture. Colored pigments are added to the cement mixture while mixing the mortar. This dyeing method is quite expensive, but one of the most effective and durable.
• Coat the concrete surface with a coloring compound. Special paints for concrete are used, which are characterized by deep absorption into the structure of the material and remain resistant to negative environmental influences.

Epoxy paint

The following types of epoxy resin-based paints are used for painting concrete:

• two-component compositions;
• powder pigmented products;
• aerosol preparations;
• color emulsion;
• water-dispersible substances.

Various chemical components are added to epoxy paints to improve existing properties:

Adding acrylic resin to paint will make it UV resistant.

• Acrylic resin. Strengthens the colorant's resistance to ultraviolet rays.
• Phenolic resin substance. Makes the composition resistant to chemical reagents.
• Quartz dust and glass flakes. Provide increased material strength to mechanical loads.

Positive characteristics of epoxy dye:

• high-quality adhesion to concrete;
• high waterproofing resistance;
• elasticity of the material;
• active vapor permeability;
• resistance to precipitation and temperature changes;
• resistance to chemical reagents.

Acrylic paint

Painting compounds are used for painting various concrete structures both outside and inside. The solvent is water; the dilution of the coloring composition can be equal to 10% of the liquid from the total mass of the substance. Acrylic dye can be applied to the surface at low temperatures, this is the advantage of the product over other types of paints. Advantages of acrylic-based paint:

The advantage of the product is its immunity to moisture and resistance to precipitation.

• resistance to moisture and precipitation;
• minimum consumption;
• aesthetic appearance;
• environmental friendliness;
• absence of toxic substances.

Acrylic water-based paint for concrete is applied to the concrete surface in the same way as other painting compositions, according to existing technical instructions and recommendations of professionals. The dye should not be applied to an untreated or unprepared surface. It does not tolerate multiple layers of dyes; before applying the paint, it is advisable to remove old layers remaining from previously applied dyes.

Polyurethane compounds

Polyurethane-based paints come in two types:

• Single-component. Polymerization effect due to interaction with moist air. Does not require additional hardener. It is applied in a thin layer, does not penetrate into the structure of the material, but forms a surface protective film.
• Two-component. Before use, a special hardener is added. The structure of the mixture allows the dye to be used in multiple layers.

Positive characteristics of polyurethane paint for concrete:

• relatively low cost;
• resistance to negative influence factors;
• strong surface coating.

Types of paints for exterior use

Paint and varnish materials used for painting concrete floor slabs and walls are divided into categories:

1. Water based dyes. The material contains synthetic resins, fillers and pigment. Paints are characterized by increased resistance to ultraviolet radiation, withstand temperature changes and do not collapse under mechanical stress. The protective layer allows vapor to pass through; repainting the surface is required after 8-10 years.
2. Materials based on organic solvents that can be applied to concrete bases at subzero temperatures. The disadvantage of paints is the toxicity and flammability of the solvent (for example, white spirit or solvent). The painted surface does not fade when exposed to sunlight, and the paint layer is not washed off with water.
3. To obtain a glossy finish that is resistant to mechanical stress, silicate paint is used. It is based on liquid potassium glass with increased strength. Additives based on silicon powder, zinc or aluminum are added to the solution. Metal components provide surface protection against corrosion. The service life of the coating is up to 20 years without loss of original color. The disadvantage is the increased cost and the need to mix the components before use.

Limestone

Powder-type lime materials for interior use are intended for dilution with water. To increase mechanical strength, natural drying oil is added to the solution. The material can be used to paint the external surfaces of buildings. First, the working plane is leveled, cleaned of dust and impregnated with acrylic primer. The paint is applied with a roller or spray. To ensure a uniform layer, work is carried out in cloudy weather.

The materials require impregnation of concrete with primers made from lime paste and table salt. For external walls, a lime-based primer is used with the addition of laundry soap and natural drying oil. To treat contaminated surfaces, increase the amount of drying oil in the solution. The paint is applied in several layers with intermediate drying and visual inspection of the work result. The coating is destroyed under the influence of temperature changes and precipitation within 2-3 years.

Water-based

The material consists of water in which binders and pigment are dissolved. The paint is odorless and is recommended for use on floors and walls indoors. After the water evaporates, a wear-resistant film remains. The protective layer has microscopic pores through which vapors of liquids escape from the concrete.

Facade water-based paints have increased resistance to low temperatures due to the introduction of additional additives.

The solution for external work contains additives that prevent the appearance of mold or mildew on concrete foundations and walls. If the paint is applied by spray, then components are added to the solution to reduce foaming.

The coating remains on the surface of concrete houses for 5 years, provided that the technology is followed. Water-based paints should not be applied in rainy weather, since water washes away the dye components and streaks form on the surface.

Oily

Oil-based materials are a mixture of natural drying oil with fillers (for example, barium sulfate powder) and a pigment that determines the color of the dye. After application to a concrete base, the substance dries for 12-24 hours, releasing drying oil vapors. The protective layer does not allow evaporation from concrete to pass through, which negatively affects the durability of the coating. Oil paint is not frost-resistant, so the material is rarely used on concrete walls on the outside of a house.

Water-epoxy

Water-based epoxy paints and varnishes are supplied as a kit, including a base solution and a hardener. Before application, the components are mixed in a separate container in accordance with the manufacturer's recommendations.

The pigment is introduced at the factory or added to the solution before painting the concrete base. Application of the substance at negative temperatures is allowed. The strength of the layer depends on the amount of hardener and the quality of paint preparation.

The technology of applying epoxy dye to wet concrete can increase the strength of the base. The surface does not change color under mechanical stress or irradiation with ultraviolet rays.

The epoxy base contains harmful substances; the dye is used outdoors or indoors with an organized ventilation system until it hardens. The protective moisture-resistant layer is not destroyed by chemical reagents (for example, acid or alkaline based).

Acrylic silicone

The acrylic-silicone-based painting material contains polymer resins and additives that increase adhesion to the concrete base. The dye contains silicon compounds that increase the strength of the paintwork. The material is intended for use inside the house and for painting external walls. The downside is the limited number of colors.

Water is used to dilute the material to the required consistency; painting is done with a roller, brush or spray gun.

The resulting protective layer is resistant to moisture, and it is possible to remove contaminants with water. The material does not emit harmful substances when drying and during operation, air temperature changes do not destroy the coating. The dye is applied to the walls in 2-3 layers with pauses lasting 5-6 hours to evaporate water from the paint coating.

Acrylic

Polymer-based dyes have good adhesion to the base, which has been previously cleaned of grease stains and dust. Acrylic paints can be used indoors and do not release toxic fumes when dry. An elastic water-repellent film ensures ventilation of the concrete base; the color of the dye is adjusted by introducing dry or liquid pigment. Acrylic materials form a heat-resistant protective layer that is not destroyed by mechanical stress.

Water or organic solvents are used to dissolve paints. Water-based environmentally friendly materials can be used indoors. Spilled paint is removed with a damp sponge or washed off; dried material is not washed away by water. Organic acrylic dyes are resistant to low temperatures and can be applied in winter.

Polymer and vinyl

To protect concrete from atmospheric influences, polyurethane-based materials are used. The paint is used inside and outside the building; the disadvantage is the long drying time (up to 14 days). The applied layer gains strength 2-3 days after the work. Polymer and vinyl materials are used in rooms with increased requirements for wear resistance (for example, at car service stations).

Vinyl paints harden in 2-3 hours; as the air temperature rises, the rate of solvent evaporation increases.

Manufacturers recommend applying the material at temperatures up to 20°C. The paint forms a uniform protective layer; repainting the surface is not required, which reduces material consumption. The service life of the coating reaches 7 years.

Latex

Latex paints and varnishes are made from a suspension of synthetic rubber in a styrene-butadiene solvent. To obtain good resistance to low temperatures, polyester or alkyd resins are added to the mixture.

Due to the introduction of additives, the characteristics and adhesion of the paint change; before applying it to concrete, it is necessary to clarify the purpose of the material (indicated on the factory label). Manufacturers offer materials with matte, glossy and partially matte surfaces.

The resulting layer allows water vapor and air to pass through, ensuring the removal of excess moisture from the concrete. To remove dirt from the decorative coating, use sponges moistened with water and detergent. Ultraviolet radiation does not change the original color; when the base is deformed, the paint layer does not peel off or burst. An additional advantage of latex is the effect of repelling dust, which does not settle on the painted facades of residential buildings.

Stages of work: how to organize painting?

Removing contaminants

To prepare a concrete surface for the painting procedure, it must be cleaned of such contaminants as:

• dust accumulations;
• grease stains (from gasoline, automobile oil, traces of gases contained in the air);
• lime and chalk;
• pollution and garbage;
• peeling elements of the old paintwork.

If a concrete structure has previously been painted with alkyd or oil-based compounds, it must be completely cleared of coloring matter, since dyes do not interact with other paints. Fill holes and cracks with putty.

Primer and degreaser: why are they needed?

Before using the primer, the surface is degreased. The final step before painting concrete is primer. Applying primer to a concrete surface will provide a number of advantages:

• will reduce the consumption of coloring material;
• remove dust from the surface;
• will level the surface, which will facilitate the painting process;
• protects against the occurrence of fungus and mold;
• will increase adhesion between building elements.