Features of choosing facade paint for plaster for exterior work

Paint for plaster, brick, concrete - the main advantages of use

The application of a colored coating has two main functions: on the one hand, it helps to increase the aesthetics of the appearance of the finished object, and on the other hand, to enhance the performance of the base.

So, for example, if brick paint for exterior use or a composition for painting a plastered surface is used, it creates a film that prevents excess moisture and destruction of the facade. As a result, repair work is postponed for a longer period, and the service life of the exterior of the house increases. Painted surfaces, at the same time, allow steam to pass through, the walls continue to “breathe”, so condensation formed due to the temperature difference between the external and internal surfaces does not accumulate. Lack of dampness – prevention of mold formation. As is known, in a short time it can easily destroy even the most durable concrete foundation.

Any facade paint for brick, plaster, or concrete is slightly susceptible to wind and precipitation, frost, and heat. Its color does not fade in the sun, retains its saturation for a long time, the painted object looks presentable and very laconic.

The color of facade coatings retains its saturation for a long time Source en.element.ua

The properties of dyes are not destroyed by temperature fluctuations; dust particles do not stick well to a smooth surface, so they are easily washed off by rain. If you want to refresh the façade, you can wash it with a hose. This procedure will not in any way affect the strength of the paint layer, but only if it was produced by a manufacturer responsible for the high quality of its products.

Among European brands, the most popular paint for brick, plaster, and concrete is the Swedish brand “Beckers Akrylatfarg”. It is sold on the market for 880-950 rubles per liter. Among domestic manufacturers, the Dufa trademark has a high reputation. The price of its products averages 400-476 rubles per liter. Recently, buyers are increasingly giving their preference to another domestic brand, Dulux. It offers high-quality facade paints at an affordable price (310-386 rubles per liter). There are different types of paints in the line. Each has its own technical characteristics.

The most popular domestic facade paint Source prom.st

How to choose the type of paint for a specific surface

First you need to decide on the material from which the base is created. Most façade coatings specialize in the following materials:

• Plasters of various compositions;
• Aerated concrete;
• Brick;
• Concrete. The estimate for each material will be different.

Water-based paints cannot be used for application to metal surfaces. In the case of wood, their use is acceptable, but not in all situations. But organic compositions are almost universal.

Surface quality is the next most important factor. The composition of the paints determines how shiny the walls will be and what color they are painted. The matte surface distinguishes water mixtures; they are decorated in light colors. The organic base promotes a harder shine. The choice of colors and tones in this case is much wider, even if a simple cement composition is purchased.

You cannot do without taking into account operating conditions. When dust levels are high, the ability to repel water and other substances is especially important. Or where a lot of exhaust gases collect. The choice will be beneficial for regions where it often rains.

The composition of the paints determines how shiny the walls will be and what color they are painted.

Types of painting compositions for facades

The classification is based on the principle of using the main connecting component. For acrylic paints, resin is used as it. It makes the composition hygroscopic and abrasion-resistant. The material is considered universal, suitable for painting facade plaster, brick cladding, and for enhancing the aesthetic component of a rough concrete surface.

Manufacturers produce two types of acrylic paints. Water-based paint for exterior use is available for sale. It is inexpensive and does not have a specific pungent odor. Builders note its good resistance to high temperatures. Organic acrylic compositions are more suitable for painting facades covered with worn, cracked plaster. Their cost is higher than simple water-soluble paints, but they help save on base repairs.

Facade painted with acrylic paint Source miro.medium.com

Acrylic paints are tinted, which helps you obtain a rich color palette and create your own color. They do not contain substances that can stimulate the growth of pathogenic microorganisms or provoke the development of allergic reactions, therefore the products are considered completely safe for human health.

See also: Catalog of house projects with facade plaster and painting.

Silicone paints

Such compositions are based on a polymer. This substance has a lattice molecular structure that does not allow water to pass through. It does not soften with a decrease or increase in air temperature, which means that the hydrophobicity of the paint remains in any weather. Rainwater or drops of fog will not be absorbed into the painted plaster, they will flow down it and be absorbed into the ground. At the same time, the accumulation of condensation, which occurs due to the difference in temperature between the outer and inner surfaces of the wall, also does not occur; it easily evaporates through the layer of paint and evaporates into the air.

The film formed by silicone paint does not conduct electricity and does not accumulate it. Acrylic paints can be applied to the plastered surface only a month after the cladding is formed; the silicone composition can be used just three days after its creation.

Plaster painted with silicone paint Source obustroeno.com

Silicone compounds are the best facade paint for bricks for exterior work; it is compatible with any type of coating, which makes it universal. It can be used to paint old substrates with mineral coatings, acrylic, latex paints, products made of plaster, wood, and metal.

Silicone compounds are very plastic. Thanks to this quality, it is possible to repair surfaces with cracks up to two millimeters without first filling them with putty mixtures. The composition of the paint inhibits the proliferation of pathogenic microorganisms, which helps save on the application of antiseptic primers.

Silicone is an environmentally friendly material; in addition to it, paints contain fillers, coloring pigments, plasticizers, thickeners - absolutely harmless components that do not have a strong chemical odor. Experts assure that silicone-based façade compositions can also be used as brick paint for interior decoration. It does not fade in the sun; manufacturers indicate that the coating created with its help can last more than 20 years while maintaining all its performance properties.

Wall preparation stage

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

First of all, when intending to paint the facade, you need to select the right weather conditions for this . You should choose a day on which rain, strong winds or temperatures below + 5 degrees are not forecast.

The process of preparing the walls is as follows:

1. Initially, it is necessary to remove the layer of paint that is present on the facade (if 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 hair dryer and a hard spatula. If the acrylic variety was used, then it is allowed to apply acrylic water-based paint on top.
2. Next, you need to assess the condition of the plastered surface . A wall that is ready for further painting must be leveled, but not get dirty, and when in contact with it, do not leave dust on your hands or crumble. It is recommended that if the above criteria are not met, the façade should be puttied.
3. Applying a primer is a good way to add strength to the plastered surface and improve adhesion between the paint and the wall. The soil for such work is selected as a penetrating type.

Facade cleaning

Priming the wall

Video description

The video describes in detail the properties of silicone paints:
See also: Catalog of companies that specialize in the sale of facade materials and paint and varnish products.

Silicone paints have only one drawback - high cost. It is approximately twice the cost of acrylic compositions. But experts assure that the high quality of the coating and the long service life of the protective layer fully recoup the investment.

Lime paints

The basis of their composition is slaked lime. It helps create a protective layer that is highly vapor permeable. The bactericidal properties of such compositions are well known, so they are often used not only to prevent the formation of mold, but also to combat existing lesions.

Lime paint for facades on plaster is not as popular as acrylic or silicone based compositions. And all because it is easily washed off with water. Any heavy rain can greatly spoil the appearance of the cladding. Because of this, it is necessary to update the color coating after each season. Achieving the right shade is also difficult. The color palette consists of white or several pastel undertones. Concrete bases are extremely difficult to paint over. Its texture shows through, causing the paint layer to become uneven.

Lime paint for facade Source severny.by

Cement paints

They have a mineral base. The composition necessarily contains white Portland cement and coloring pigments. The composition has a more durable texture than lime paints, so the coating is not washed off with water. But it completely lacks bactericidal properties, which makes painted plaster vulnerable to fungal attack. Without the use of an antiseptic primer, the walls quickly become covered with characteristic black or green spots. Because of this, even despite the low cost, cement paints have practically ceased to be used today in private housing construction.

Texture of cement coating Source nashaotdelka.ru

Organic based paints

They have been used for a long time, so they are classified as traditional finishing solutions. Such materials really have many advantages:

• Painting even at low temperatures or high humidity;
• Durability;
• Protection against sudden temperature fluctuations;
• Adhesion to metals, compatibility with almost all surfaces;
• Vapor permeability;
• Frost resistance;
• Water resistance;
• Elasticity, compensation of significant loads and expansions;
• Durability of the coating, textured color.

But the compositions have a pungent odor when applied and some time after completion of the work. Paints take a long time to dry; it takes at least two days. Costs increase due to the need to use solvents.

They have been used for a long time, so they are classified as traditional finishing solutions.

Criterias of choice

Before purchasing a composition for painting a facade, you should carefully study the composition and instructions for use. It outlines the conditions for successful use of paint. Each brand has its own temperature and humidity limits. Each has its own level of biosecurity.

It is important that the use-by date matches the expiration date of the product. After it expires, the paint dries out and therefore loses its basic properties. It becomes less elastic, and when applied it is not possible to form an even, homogeneous layer.

Using coloring compounds you can create matte or glossy surfaces. The first look restrained, but they hide the imperfections of the plaster layer well. The second ones are bright and saturated, shimmering beautifully in the sun. But they can only be applied to perfectly flat surfaces. Otherwise, the topcoat will only highlight existing defects.

Bright red glossy facade paint Source u20.filesonload.ru

Types of facade paints

The composition and structure of the paints on the facade are approximately the same:

• Solvent part;
• Pigment additives;
• Fillers;
• Base or film formers.

When classifying by type, the main factors are the type of base with solvent. Operating conditions, including climate and weather for a particular region, must be taken into account. Then coloring will give results.

Operating conditions, including climate and weather for a particular region, must be taken into account.

Consumption

Before purchasing paint, it is important to calculate in advance how much of it will be needed to decorate the facade. It will be easier to do this if you know the coverage area in advance. It is calculated using the formula: wall width multiplied by height. If there are windows on it, their area is calculated, and then the resulting amount is subtracted from the total figure.

The standard indicator (consumption per 1 m²) is indicated on the packaging of each paint. Silicate and latex paint on bricks for exterior work consumes an average of 0.1-0.14 liters per square meter. Water-dispersed 0.1-0.16 liters per square meter. The consumption of acrylic compounds is 0.5-0.7 liters per square. We multiply the average by the area of ​​the wall, and we get the rate of paint consumption to cover it in one layer. If several layers are intended to be applied, the resulting figure is multiplied by their number.

Note! The average consumption rate indicated on the packaging is for primed surfaces. If paint is applied to an unprimed surface, consumption increases.

Which façade paint is most optimal?

Here you need to rely on all operating conditions. This applies to climate and loads equally. Decorative properties are also important, because it is the front side of the house that attracts attention. Water-dispersed compositions have recently become increasingly popular. Lack of odor is considered an important advantage; this is also true for MDF.

Decorative properties are important, because it is the front side of the house that attracts attention.

Briefly about the main thing

You can paint a plastered facade with different colors. The most affordable acrylic compositions from domestic manufacturers. They contain resins that provide unique finishing properties. The thinnest film allows the walls to breathe, its color does not fade in the sun. The layer lays flat and reliably protects the plaster from weather influences.

Silicone paints contain polymers and microscopic particles of silicon. Due to this, the throughput of the finishing coating, hydrophobicity, and the rate of water evaporation and elasticity are improved.

Lime paints wear off quickly. Cement-based compositions completely lack bactericidal properties, so they are unable to prevent damage from mold and fungi.

It is necessary to choose façade paint taking into account restrictions on temperature conditions and air humidity levels.

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Water based paints

Water with the addition of small particles, which then form emulsions. During application, the liquid partially evaporates and partially dissolves in the base. A film of protective coating remains, which then does not react in any way to moisture. Perchlorovinyl material is subject to the same regulation.

Water-based paints have a number of positive aspects when processing a wall:

• The work is simplified and cheaper by using ordinary water as a solvent. It becomes easier to keep your work tools clean. The cost is really less;
• Fast drying process. The work is accelerated as much as possible due to the fact that this process takes no more than a few hours;
• Low flow rate per square meter. The covering power of such compositions remains high, but the density, on the contrary, remains low. Thanks to this, the area over which the compositions can be distributed increases;
• Tinting in any colors. You can choose any design option;
• Excellent performance qualities of the coating, even when they are on the street;
• The surface is not very shiny;
• No smell. To do this, you need to prepare the foundation.

The disadvantage is the restrictions on use on metal products. There is a ban on application in rainy weather. But these properties cannot be considered critical; they are easy to circumvent in practice. Quality preparation is important.

The work is simplified and cheaper by using ordinary water as a solvent.

Well-known manufacturers of facade paints

The following names have earned their place in the ranking of famous names:

• LAKRA;
• ACRIAL-LUX;
• VGT VDAK 1180 SUPERWHITE;
• CAPAROL AMPHISILAN-PLUS;
• FAÇADE DELUXE SCANMIX;
• TEX PF-115;
• FACADE EXPERT;
• TIKKURILA ULTRA MATT;
• LUXENS FACADE.

Solutions that are too cheap will not be beneficial.

Solutions that are too cheap will not be beneficial.

Tools for work

The following tools are used for painting plaster surfaces:

• wide and narrow brushes for applying the substance;
• if the area is too large, then the use of rollers based on foam rubber or material with pile is recommended;
• grater;
• fine-grain sandpaper, with which the surface of the base is leveled and sanded;
• paint tray;
• ladder.

For work you will need protective clothing, as well as goggles and a respirator. If you have to work a lot, and the work area is large, then you can paint the plaster using a spray gun. To create a textured layer, use a roller with special attachments.