The better to paint slate. Painting of slate on the roof and facade of the house. Step by step painting tutorial

Painting a slate roof is not as difficult as it may seem to many at first glance. In addition, this need may arise for various reasons. Often, the need for painting roofing material arises when it is necessary to update the appearance of the roof.

Is it possible to paint slate

As practice shows, painting old slate is a rather laborious process that requires a lot of effort and time, but if necessary, you can do all the work yourself. In this case, it is recommended to understand what kind of paint and varnish composition can be used (it must be intended for slate) and how to carry out the work. If necessary, you can watch the video and already clearly understand what and how to do in order to prevent serious mistakes in the future.

How to paint slate

Before painting the slate on the roof, it is worth asking a specific question as to why this is necessary. As practice shows, slate is a fairly durable roofing material with a high level of durability, as a result of which it can last for many years. If you pay attention to the same type of gray roofs, then the question of painting the roof comes first.

Given the reviews, painting slate can not only give an attractive appearance to the roof, but also protect the surface of the roofing material from environmental influences. Thus, the level of frost resistance increases significantly, and moisture penetration becomes much less. From this we can conclude that due to the painting of the material it is possible to increase the operational life of the finished product, to make the design attractive.

Before you start painting the roofing material, it is recommended to understand which coloring compositions can be used in such situations. To date, asbestos-cement material can be painted using 3 paints and varnishes, among which rubber paint for slate, a quick-drying compound and liquid plastic can be noted.

Liquid plastic is considered the most suitable option for painting roofing materials, especially slate. This is due to the fact that the level of weather resistance compared to other types of paints is much lower. If you plan to use this composition, then you should take into account the fact that you may encounter a rather specific and unpleasant odor.

A feature of quick-drying compositions is the presence of decorative properties, as well as a fairly high level of resistance to direct sunlight and weather conditions. Paint consumption, as practice shows, during painting is small and completely depends on the selected shade. Thus, for 1 sq. m roof can go from 100 to 150 g of paint. The paint coating retains its original properties for up to 5 years.

A feature of acrylic compositions is a rather high durability, which other types of paints cannot boast of. In addition, this product does not include harmful substances and is considered pure. After the product is applied to the roof, the surface of the slate acquires water-repellent properties that can be preserved for 10 years or more if the work is done as correctly as possible.

After processing is carried out, the roof surface becomes slippery, as a result of which snow does not linger on the roof, which, in turn, contributes to less stress on the truss system and the crate. It is this moment that is considered the most important, due to the fact that asbestos-cement slate is considered one of the heaviest roofing materials.

Attention! The consumption of acrylic paint is much higher than that of quick-drying formulations and is 300 g per square meter. m.

What paint to paint the slate on the roof

Today, on the market of goods and services, you can find a large number of slate paints for sale, which can be not only domestic, but also foreign-made. Depending on the manufacturer and the basis, the cost, of course, will be different.

For example, you can give preference to organosilicon paint, which is made on the basis of silicone and special fillers. This type of mixture, as practice shows, is able to form a fairly durable and stable coating. In addition to decorative properties, such compositions prevent the release of asbestos particles into the atmosphere. This option can be used to paint only those areas that have been previously treated with a silicone primer.

If necessary, you can use paints that are made on an acrylic basis. This option has a fairly high performance. To paint a roof made of slate, 2 layers of paint must be applied, in addition, the surface must first be prepared. If there is an old coating, it must be completely removed. If necessary, you can use colors, which will allow you to get any shade.

If the budget allows, then you can give preference to special compositions that are made on a special modified dispersion. Naturally, this option will cost much more, but the high price is justified by the technical characteristics of the finished product.

Advice! When choosing a paint for painting roofing material, it is recommended to pay attention not only to the manufacturer, cost, color scheme and technical characteristics, it is important to ensure that the selected composition is suitable for application to the slate surface.

How to paint flat slate on the facade of the house

When choosing a roofing paint for slate, it should be understood that the facade of a building finished with this building material can be covered with the same compositions as the roofing material. Painting flat slate, as practice shows, is best done with a roller, but the surface of the facade must first be treated in the same way as the roof of the dwelling, otherwise the level of adhesion will be rather weak.

Preparing slate for painting

If necessary, even the roofing material that is already mounted on the roof can be painted. If the slate was mounted a long time ago, then there is a possibility that moss appeared on its surface, mainly on the north side of the building. It should be understood that paintwork cannot be applied to such a surface. The first step is to remove all existing moss, debris and dirt. To do this, you can use several methods.

If it was decided to give preference to the mechanical method, then you should use an iron brush, with which you can easily remove the moss. In order for the work to be carried out quite easily, the roof is pre-moistened with water. It is important to understand that this method is the most time-consuming, requires a lot of time, effort and patience. If necessary, you can use an electric drill with a special nozzle, in which case you should not wet the roof.

Another way to clean the roof before painting is to use a washer. Moss and other types of pollution are cut off from the surface under strong water pressure. When using this method, you will need to give the roof some time to dry completely. After the cleaning process has been carried out, it is recommended to inspect the roofing material and, as necessary, replace damaged sheets.

When all cleaning work has come to an end, asbestos-cement sheets are treated with special chemical compounds, thanks to which the roof will be protected from the appearance of fungus and mold. This composition can be applied not only manually, but also by spraying. In the process of work, do not forget about safety precautions, as you will have to come into contact with substances that are harmful to health. In such cases, it is best to work in protective clothing and a respirator.

Before you paint the roof of the house, finished with slate, it is worth pre-priming the surface. Thanks to the primer layer, it is possible to achieve a fairly high level of adhesion and significantly increase the operational life of the structure. In addition, in the presence of a primer, the consumption of paints and varnishes will be much less. This is due to the fact that slate is able to absorb any paint, regardless of composition.

When choosing a primer, you should give preference to the color that you plan to paint the roof in the future. The primer should be applied as carefully as possible, there should not be empty spaces. If only there is a need to change the shade of the roof, but there is no desire to paint, then in this case you can purchase a new roofing material.

Important! Cleaning and painting a slate roof is a fairly complex process that should be given due attention.

How to paint slate

Many experts recommend painting the slate on the roof in the spring. If we consider the optimal time, then the temperature regime on the street during painting should vary from +15 to +25 degrees (although the manufacturer advises working at temperatures of +5 - +30 degrees).

For applying paints and varnishes, you can use ordinary brushes suitable for painting walls. However, it is worth taking into account the fact that this method cannot be called ideal, since there is a high probability that stains and streaks will remain on the surface of the roofing material, in addition, the painting process will take a lot of time and effort.

In the event that the slate is flat, the use of a roller would be an excellent choice. This option will allow you to apply a layer of paint evenly and without streaks. Since the paint is quite thick in consistency, it is not recommended to choose a spray gun in this case, as it will constantly clog.

On sale you can find special machines, which are usually designed for airless painting. However, it should be understood that such equipment has a rather high cost, as a result of which this option is suitable for work on an industrial scale or for professional roofers. It is for this reason that it is recommended to use either a brush or a roller.

Advice! Cloudy weather is considered by many roofers to be the best option for painting slate.

Before painting a slate roof, it is worth taking into account the fact that preparatory work must first be carried out without fail, as a result of which all existing dirt and moss that appears on the roofing material during operation will be removed from the roof surface.

In addition, the surface can be cleaned with a metal brush or an electric tool. If it was decided to choose the first option, then it is recommended to moisten the roofing material with water, which will make it much easier to complete the work.

Slate painting should be carried out only with paints and varnishes intended for this purpose, otherwise the operational life of the coating will be quite short.

For work, you can use ordinary brushes, a roller or a spray gun. In this case, it is important to understand that each option has its own characteristics. Thus, stains and smudges can remain from the brush, the roller is intended only for flat roofing material, and it is best to use liquid paints for spray guns, otherwise it will constantly clog.

Conclusion

You can paint a slate roof yourself, this does not require special skills, tools and work experience. Before starting work, it is recommended to pre-prepare the surface and only then proceed to painting. In this case, it is recommended to follow a step-by-step algorithm, while taking into account the advice and recommendations of specialists. Thanks to this, you can get a result that will exceed all expectations.

The period of operation of asbestos-cement slate reaches 50 years. However, with proper care, the life of the roofing material can be significantly increased. One of the prerequisites for the durability of slate is its painting. As a result of staining, a protective layer is formed on the surface, and the roof itself acquires an attractive appearance.

1. Should the slate be painted?
2. What paint is better to paint slate: tips for choosing
3. Do-it-yourself step-by-step painting of slate
   • Paint Volume Calculation
   • Surface preparation
   • Slate painting technology
4. Practical advice from experts

Should the slate be painted?

Asbestos-cement slate has long been considered the most popular roofing option due to its good performance and affordability. And today, many prefer this particular material in the construction of buildings for various purposes.

Easy to install and inexpensive slate has some disadvantages:

• not attractive appearance;
• tendency to fouling with lichen, moss;
• gradual decrease in strength characteristics under the influence of weather conditions and external factors.

Slate is a porous material prone to microcracks. The moisture accumulated in the pores, during the first frosts, turns into ice and gradually “breaks” the material from the inside. The same deformations are inevitable when lichens and mosses grow on the surface.

These problems will help to solve the painting of asbestos slate. After painting, a strong film is formed on the surface of the roof, covering the access to water and microorganisms. As a result, the destruction processes are suspended, and the service life of the slate is extended by several years.

Thanks to the protective layer, the slate becomes smooth, atmospheric moisture is not retained on it, and snow and fallen leaves quickly disappear. Accumulated dirt can easily be washed off with a mini-wash for a car or with water under pressure from a country hose.

In addition, painting solves another issue - the theoretical harmfulness of slate. This version is mainly distributed by manufacturers of advanced and expensive roofing materials. The essence of the problem is that the slate coating emits asbestos dust, which has a negative impact on the environment and human health. There are numerous refutations of this version. However, for those who doubt, there is an optimal solution - painting the slate, which will completely prevent the release of asbestos dust.

So, painting a slate roof allows you to:

• improve the appearance of the roof and give it the desired color;
• smooth out the roughness of the slate;
• prevent the formation of cracks;
• protect the material from the growth of vegetation on it;
• prevent dusting;
• increase the service life of roofing material by 1.5 times.

Slate paint must meet many requirements. The main selection criteria: resistance to temperature fluctuations, burnout and precipitation. An important indicator is the level of adhesion with asbestos cement.

For coloring slate, the following groups of coatings are used:

• acrylic enamels;
• alkyd;
• organosilicon;
• "liquid plastic".

Most wanted acrylic compounds. They are distinguished by rich tones of various levels of haze. Types of acrylic enamels: water-soluble or on organic solvents.

Water-dispersed acrylic paint for slate has a number of advantages:

• no pungent odor;
• fire and explosion-proof due to the water base;
• does not emit toxic substances;
• in the process of application does not require a special solvent;
• drying speed - about 2 hours;
• formation of a waterproof film;
• the service life of the coating is 5 years.

• Alpina Dachfarbe (Caparol) - enamel green, brown or red, resistant to frost and weather conditions.
• "Roofing paint on slate" (Novbytkhim) - forms a matte coating that is resistant to the development of microorganisms. Produced in five colors.
• "Aquagel AK-1SH" (Stirol) - LKM creates a smooth film on the slate, from which water quickly drains. A distinctive feature is the ease of maintenance of the roof.

latex paint- a kind of water-based acrylic paints and varnishes. It looks like a thick mastic, and after drying it turns into a flexible, elastic film. Such a "rubber" coating does not crack, does not let water through and has excellent adhesion to slate. Of the colors, the most popular paint for slate is acrylic 6005 (green matte), 5005 (blue matte) and 3009 (red-brown matte). Nomenclature of colors according to RAL.

Acrylic enamels on organic solvents are distinguished by:

• higher strength than water-soluble paints;
• elasticity;
• high water-repellent characteristics;
• lightfastness;
• longer drying time - about ten hours;
• pungent odor;
• moderate toxicity and fire hazard.

Important! If solvent-based acrylic paint is too thick, then it must be diluted with a solvent that is part of the enamel. Painting work must be carried out away from open sources of flame, using personal protection.

Alkyd slate paints dry quickly and form an elastic film on the roofing material, which is not prone to cracking. Additional advantages of alkyd enamel include:

• high hitch with slate;
• good moisture resistance;
• resistance to natural phenomena;
• it is not necessary to prime the surface before painting;
• service life - not less than 5 years.

Examples of high quality alkyd paint:

• "Quick-drying enamel" (Impulse) - quick drying (within 1 hour at an ambient temperature of 20°C), no pungent odor.
• "Enamel for roofs" (Empils) - the strength of the protective layer, 10 colors.

silicone paints- the most durable and reliable option for painting the roof. Silicone betrays enamel elasticity. Some types of organosilicon paints can fill microcracks up to 2 mm thick.

Important! Silicone enamels are the best option for processing old roofs.

Qualitative characteristics of silicone paints:

• high elasticity;
• the possibility of performing roof restoration and repairing cracks;
• fungicidal qualities block the reproduction of microorganisms;
• excellent dirt and water repellency;
• silicones are fireproof and non-toxic;
• durability - service life up to 15 years.

Examples of high-quality silicone enamels:

• "KO-slate" (Silicon polymer) - forms a deep color and a durable coating, is produced in two primary colors with the possibility of tinting;
• "OS-5103K" (Silicon polymer) - used for decorative and protective painting of various building materials. Differs in the increased resistance to chemical gases, alkaline and acid environment. Thanks to these characteristics, the paint can be used in industrial applications.

Polymer paints on the surface of the material form a plastic film of matte or glossy texture.

Qualitative indicators of "liquid plastic":

• 100% moisture resistance - the polymer film does not allow moisture to seep to the slate;
• drying speed;
• harmless to the environment and no fire hazard;
• resistance to UV rays;
• the possibility of applying silicone enamel without the use of a deep penetration primer;
• it is permissible to apply enamel in frosty weather (up to -10 ° C);
• durability - service life is about 15 years.

Options for good polymer paint:

• Liquid Plastic (Denalt) is produced on a polyurethane-alkyd base, which gives the coating sufficient strength;
• PPG-1 (Komoil) contains polystyrene. In the process of drying, a durable layer protecting against moisture is formed.

Important! Polymer paints dry very quickly. Therefore, it is desirable to carry out staining with an airbrush.

Do-it-yourself step-by-step painting of slate

Most often, slate is painted with acrylic paints. Therefore, we will analyze the order of work using this type of enamel.

Paint Volume Calculation

The consumption of coatings depends on the area to be covered and the absorbency of the material. As a rule, for coloring 1 sq.m. slate will be used up about 300 gr. paints. To determine the total volume of enamel, it is necessary to calculate the area of ​​\u200b\u200bthe roof.

The procedure for calculating the area of ​​\u200b\u200ba gable roof:

1. Measure the length and width of the building. The data is taken taking into account allowances for cornices (about 50 cm).
2. Perform the calculation according to the formula: S=2*(a*b), where S is the desired roof area, a is the length of the roof slope, b is the length of the roof.

The resulting value should be multiplied by the average consumption of enamel. When determining the total volume of paint, it must be borne in mind that two layers will have to be applied for high-quality staining.

Surface preparation

The longest and most time-consuming stage is preparing the surface for painting. The set of activities includes:

Important! The application of paint on the slate should be started only after the primer layer has dried - not less than 12 hours later.

Slate painting technology

It is advisable to prepare brushes of different sizes in advance in order to qualitatively process the ends, corners and hard-to-reach places of the roof. The paint is applied in two layers - the main and finishing.

Important! It is permissible to paint flat slate with a spray gun. When processing wavy material, it is better to refuse it - there is a risk of uneven staining.

The main layer is applied with special care, capturing all areas from top to bottom. After that, the base coat must be left to dry completely and re-apply the paint.

The final layer "evens out" sharp transitions of paint and creates a monophonic, saturated color of the roof.

Features of painting new and old slate

It is better to paint the new slate "below" - before laying the roof. There is an opinion that the base layer should be applied on the ground, and the finish one - after the installation of the slate. Proponents of this method argue their opinion by possible damage to the enamel when installing the sheets. However, many experts believe that the risk of peeling off the paint layer is associated primarily with the unprofessionalism of the workers and the complexity of the design of the roof itself. It is much easier to cover up local scratches at the top than to apply a full coat of paint.

Old slate is more difficult to process due to a number of factors:

1. Structural wear. The elements of the crate weaken and sag over time. Walking on the roof can cause cracks in the slate.
2. Partial destruction of the roofing material. Before painting the old slate, it is necessary to check it for defects. Unusable sheets to be replaced, and minor breaks to be repaired.
3. Changing the structure of the slate coating. Under the influence of precipitation and temperature changes, the material becomes loose - this creates a danger for workers who paint slate.
4. The need to clean the surface from accumulated dirt and various growths.

Thanks to modern painting materials, it will be possible to avoid the dullness and dullness of slate. The main thing is to choose the right paint and adhere to the technological process, then the result will please for many years.

Do-it-yourself slate painting: video

Painting the slate on the roof will make the coating look attractive and protect it from the external environment. Today you will learn how to paint a slate roof and how to do it right.

In the video in this article, you can see a lot of useful information and do the job well.

Why paint slate

Slate has been one of the most popular roofing materials for houses and buildings for a long period of time. Such fame is easily explained by its affordable pricing and long service life.

To date, flat slate, like wave slate, is often used in the construction of various structures. But, like every building material, it has not only advantages, but also a number of disadvantages.

For example:

• Slate does not have an aesthetic appearance, which does not allow it to be classified as decorative or elite building materials. It is destroyed in an aggressive environment. Under the influence of moisture, it can become overgrown with lichens or mosses.
• To cope with a number of such problems, as a rule, timely painting of the roof helps. Such application of coloring compositions can be done by hand. The layer that is formed during painting protects the asbestos cement from the effects of wind, preventing it from weathering, and does not allow it to undergo biological degradation.
• In order for the life of such a roof to be longer, it is necessary to treat the slate roof with special protective solutions, and only after that with paint. But, in fact, such measures can be carried out not only when the slate is new, but also when it has already acquired a black color and the process of its destruction will begin.
• In order to protect the roofing and prepare for painting, the following measures should be taken:
• removal of moss and lichens from the roof.
• Cleaning it from dirt and dust particles.
• Treatment with antiseptic compounds and water repellent.
• Roofing primer.
• Painting it twice with drying between the layers of applying paint and varnish products
• If the slate is prepared correctly, then the paintwork lays down in an even layer, does not chip off, does not lag behind, which protects against external environmental influences, but also gives a presentable appearance to the building.

Attention: Painting a slate roof will also eliminate a number of shortcomings.

Roof painting rules

How to paint a slate roof now consider in detail. If you do everything yourself, then the price of the work will not be significant.

Roof cleaning

Before deciding how to paint a slate roof, you need to understand the principle of coating. After all, technology is important here, otherwise the coating will not hold.

So:

• If asbestos cement lies on the roof for more than one season, it is best not only to sweep the material from debris and wipe it, but also to remove the moss and lichen that have grown on it. Most often they spread on the slopes of the roof.
• A stiff brush will help to cope with growths, but processing should be carried out exclusively on a dry roof surface. Of course, you can clean with your hands, but a grinder with a stiff wire brush attachment will help optimize the process. You can buy it at any hardware store.
• If you use a power tool in your work, it will facilitate your work, increase speed and improve the quality of cleaning roofing material. After all the slopes are cleaned, the top coat must be brushed with a regular brush, and then rinsed with warm water and allowed to dry before proceeding to the next step.
• Those places that are difficult to reach and cannot be cleaned are rubbed with a hard brush by hand with a grinder, very carefully so as not to damage the coating.
• The slate can be cleaned with a high pressure water jet. This method can only be used with special equipment. With this cleaning method, you can perform the procedure in any weather, regardless of precipitation, the main thing is that the air temperature is above zero.
• Before cleaning, you should choose the right pressure, it should not exceed more than 250 atmospheres. If it is higher, it can adversely affect the slate and lead to destruction. But it is worth considering that the water pressure should not be weak, otherwise it simply does not eliminate moss and lichens on the roof.

Slate roof processing

Before coating asbestos-cement material with paints and varnishes, it is necessary to carry out a number of procedures that will increase its resistance to an aggressive external environment.

Before wondering how to paint flat slate, it is advisable to find out what kind of material it is.

Slate is a facing layer for construction and roofing works. A common material is asbestos-cement flooring. It is produced in the form of flat and corrugated sheets. It has a drawback - the limitation of the period of application. But if you paint the slate roof in time, then its service life increases.

Why paint slate

Do-it-yourself painting of slate is carried out according to certain rules. Before proceeding with the process, you need to familiarize yourself with the types of paints and methods for preparing roofs.

Building materials have positive and negative sides. Slate is no exception. Along with accessibility, ease of use, it has a number of disadvantages. Due to the presence of negative sides, slate roofs are recommended to be painted.

The cons include:

• material porosity;
• release of asbestos dust.

Dust, dirt, mold, moss, fungi collect in the pores. They retain moisture, which, under the influence of low temperatures, turns into ice and destroys the material from the inside, deforming it.

Slate coverings are used as roofing material. It is believed that the asbestos dust emitted by it affects human health. There are still no clear conclusions on this issue. Therefore, the coloring of slate is an acceptable preventive measure.

Slate is destroyed under the influence of temperature changes. Its heating or cooling leads to wear of the roof of the house. Paint minimizes risks and increases the life of the roof.

Types of paints for slate

Before you paint the slate on the roof of the house, it is advisable to familiarize yourself with the types of paintwork. Only after that they make a decision about what paint to paint the roof.

First of all, the composition must be marked “for facades” (for outdoor work). Otherwise, the staining will not work, the coating will become unusable, it will begin to fall off in pieces. Secondly, the pigments must withstand direct sunlight, not fade, and the level of moisture resistance should protect the roof from getting wet, prevent from deformation.

These include acrylic, alkyd, silicone paints and "liquid plastic".

Acrylates

Acrylic paints are commonly used in construction. Some types are water-based. They are odorless, non-toxic, dry in 1-2 hours. The coating with such material is done in 2-3 layers. The second type of paints, acrylates on organic solvents (service life - 5 years). The disadvantage of this type is the presence of a pungent odor.

Alcides

Alkyd paints are made on the basis of organic solvents. These are quick-drying enamels that form an elastic film. The type of paint is resistant to moisture, has good adhesion, does not need pre-priming and tolerates temperature changes. Service life up to 5 years.

Silicone

Silicone (silicon-containing) coatings are a mixture of coloring pigments based on liquid silicone. They can mask cracks up to 2 mm in size.

Advantages of silicone paints:

• moisture resistance;
• camouflage ability;
• elasticity;
• antibacterial properties;
• environmental friendliness;
• lack of smell;
• the possibility of painting without prior priming.

Silicone coatings are applied to dry surfaces.

liquid plastic

The coating consists of polymers, pigments, solvent. Drying on the surface, the paint forms a thin layer of plastic (polyurethane, vinyl, polystyrene). It is available in both matte and glossy versions.

Characteristics:

• moisture resistance;
• fire resistance;
• color fastness;
• environmental friendliness;
• resistance to subzero temperatures;
• lack of interaction with chemical agents;
• durability;
• no pre-priming.

Mixed versions are commercially available (eg alkyd-polyurethane coatings). These compounds are very durable.

Color selection

Before painting the slate, you need to decide what color to paint it. Common appearance: red, green or brown paint. For self-creation of new shades, it is recommended to use white paint and color. With it, you can easily achieve a certain color. On sale they correspond to the color catalogs RAL, NMS, Symphony.

On the color packaging, the manufacturer indicates the exact proportion of dilution.

Preparatory work

After choosing the right type of paint, it is advisable to find out how to paint the slate correctly so that you do not have to redo it after a year. Regardless of whether it is painting flat slate or wave sheets, you need to approach the process competently and follow the necessary sequence of actions.

The old painted roof is carefully prepared. Roof cleaning can be done manually (using an iron brush), using a medium-power mini-washer, or in a combined way.

Cleaning the roof with a brush or a drill with an appropriate nozzle is carried out in a respirator and goggles.

In the domestic construction market, slate has been one of the most popular materials for many years. Today it is used both in unpainted (for cottages, for outbuildings and non-residential premises), and in painted form. The latter option is able to give the house additional aesthetics. However, deciding to transform the roof of the house, you should choose the right materials. Let's try to figure out how to paint slate, which paint is preferable and why?

Let's start with the fact that most of our compatriots are firmly convinced that only wavy sheets are "slate", but in fact, flat sheets of asbestos-cement chips also fall under this definition.

What is the best paint for slate?

The modern choice of materials is huge, and this makes it possible to make the roof of the house truly individual. When choosing how to paint slate, evaluate all the advantages and disadvantages of imported and domestic options, and only then make a purchase.

Acrylic paint for slate

The list of indisputable advantages of acrylic or water-dispersion compositions includes:

§ Ability to fill small cracks and reliable protection against moisture penetration.

§ Hydrophobicity. Water rolls easily over the painted surface, which makes it possible to work with the composition on flatter roofs.

§ Reducing the load on the rafters. Occurs by improving the conditions for snow to melt from the slate.

§ It is possible to work with acrylic paint at air temperature from +5°С to +35°С. The drying process takes 1-2 hours, the complete polymerization of the composition takes a day.

If you are looking for how to paint flat slate? For these purposes, acrylic paint is best suited. It provides the roof with maximum resistance to weathering and temperature extremes.

Quick dry slate enamel

This option contains a binder that promotes the formation of a smooth film on the roof surface. The roof, painted with such enamel, is not only durable, but also has high water-repellent properties, is reliably protected from the damaging effects of ultraviolet rays.

Liquid plastic for slate

This synthetic composition is made on a polystyrene, bitumen or vinyl chloride basis. The high popularity of such paint for slate is explained by the convenience of its application, as well as high elasticity, which eliminates the risk of delamination of the coating. Rubber paint contains pigments that keep the color from losing its brightness for a long time. The only downside is toxicity. The composition should be applied in special respiratory and hand protection.

§ Dachbeschichtung (Germany). It is known for its durability, strength, high adhesive properties. But at the same time it is more expensive than other imported analogues and can only be applied to natural tiles, slate.

§ Polifarb/Akrofarb (Poland). This composition is created on the basis of dispersion paints, which ensures a high drying speed, as well as color saturation and brightness.

§ Kilpi (Finland). This paint is perfect for slate, corrugated board, metal tiles.

§ Eter Akva (Finland-Sweden). This material is resistant to alkaline aggressive environments, is water-soluble, contains acrylate. It is used for staining slate and concrete.
How to repair and paint slate

Old slate can last for quite a long time if appropriate measures are taken to this. Of course, this requires a lot of work, but it is still much cheaper, easier and faster than replacing the entire roofing material.

The slate can be restored. To do this, it needs to be washed, repaired and painted.

The first step is not as easy as it seems. Rags and sponges will be useless here. And even with hard metal brushes it will be impossible to clean the old slate, which has been covered with a layer of moss over the years. Here it is better to use something more serious. In particular, we can recommend a nozzle for a drill in the form of a round stiff brush. Using this nozzle, it is quite possible to clean the slate to a state suitable for further work.

But a high pressure washer will be even more effective. This tool is used in construction. Also, it can often be seen at car owners and in car repair shops. Of course, it is better to use a construction sink, as it has more power.

It is impossible to skip the stage of cleaning the old slate. The fact is that the materials that will be further used for its repair and subsequent protection should not be applied to the layer of debris. In this case, they simply will not be able to properly adhere to the surface and will peel off after a few days.

Old slate often has nasty cracks. It was difficult to deal with them before. But today, new materials have appeared on sale that simplify the task many times over. These materials include bituminous two-component mastics.

If the task is not to urgently repair the slate to eliminate the leak, but you want to really improve the quality of the old coating, renew it and extend its service life, then you should not buy and use ready-made mastics. It is better to use two-component ones, which are mixed in a suitable container before use and only then applied to the roof.

Mastics are different and in order to perform the work on repairing slate with their help in a quality manner, it is necessary to read the instructions that are attached to them and, most importantly, follow all the recommendations that are set out in it.

After the slate is free from cracks, it is primed. Choosing primers for slate is not easy, as slate is made from a complex composition that may not be compatible with the primer. In order not to risk, you can buy an acrylate primer, which is better than others for slate and other similar materials.

You can also prime the slate with paint. To do this, you just need to dilute the paint with clean drinking water in a ratio of one to ten.
As for painting slate, rubber paint is recommended. It is plastic, easily adapts to any conditions, durable and strong. Such paint will become a reliable protection for the roof and significantly extend the life of the slate.

Paints for slate of domestic production:

§ Butanite (Russia). The composition contains polymeric substances and mineral-silicic additives. Butanite provides the roof with reliable protection against atmospheric action, increases the frost resistance of the surface.

§ Polifan (Russia). The paint is suitable for work on slate, concrete, brick. Its indisputable advantages include durability, color fastness, wear resistance.

§ Unisal (Belgorod). The composition contains acrylic elements and high quality coloring pigments. This ink provides a coating that is resistant to UV exposure and the damaging effects of moisture.

If an already installed roof is to be processed, preparatory measures will be required. To do this, you should prepare a brush with metal hairs, a grinder or a drill with a specially brushed nozzle, or a high-pressure car wash. The latter option will make the process less time consuming and highly efficient.

Using the above tools, we clean the roof from plaque, moss, etc. Next, we treat the surface with an antiseptic, which will prevent the reproduction of fungi and the appearance of plaque. The next step is the primer.

Having carefully primed the slate sheets, you can be sure of the maximum adhesion of the paint to the surface of the roofing material. In addition, the primer, filling the pores, will significantly save the paint itself, and the roof surface will become more even.

Surface painting is best done in 2 layers. The composition can be applied with a roller or brush or spray. It is not recommended to paint slate in rainy weather and very hot days

Before painting directly, the slate must be checked for hidden serious damage by careful inspection. If some sheets are cracked, they must be replaced. Simultaneously with checking the condition of the surface of the slate sheets, the reliability of their fastening and, if necessary, additional strengthening are also checked. Then the most time-consuming procedure is performed - cleaning and grinding the entire surface, in which dirt and dark deposits are completely removed. This work is done using an electric drill with a grinding attachment. Additionally, it would be nice to rinse the slate with a powerful jet of water from an electric washer.

After cleaning, you must immediately cover the surface with a special antifungal primer, after which a liquid cement mortar (in the consistency of kefir) is applied to the roof. The solution must be applied with a brush (a roller is not suitable for this operation). After waiting for the solution to harden, the surface of the slate is primed again. The pores and microcracks are sealed and the process of applying paint can begin.

The choice of paint for slate

The selection of paint is carried out taking into account what result you want to achieve - a bright appearance with slightly worse durability indicators, or vice versa, excellent performance with calm and discreet tones. In the first case, acrylic enamel is used, in the second case, rubber paint or, as it is also called, liquid plastic. Both options have advantages and disadvantages.
Acrylic paint for slate

Acrylic enamel has a water base and fills microcracks well, protecting the slate from destruction. It also has water-repellent properties, which is important, since rain, unfortunately, is not a rare occurrence in our latitudes and its detrimental effect on the roof surface is most sensitive.

When choosing acrylic paint for slate, you must carefully read the annotation, as it indicates the conditions for its use and lists the surfaces where it should be applied.

Rubber paint for slate

Many experts recommend rubber paint for slate, as a special composition that creates an elastic protective film on the surface, which prevents peeling of the paint. It is also good because it adheres well to slate and is easy to apply.

Rubber paint for slate includes special pigments that do not allow color shades to fade in the sun, so there will be no dull gray color of the roof. A serious disadvantage of rubber paint is its toxicity, so the protection of the respiratory system and exposed skin during painting should be given increased attention.
Paint for slate Condor

Weather-resistant acrylic paints for slate Condor (KONDOR), produced in Belarus under a German license and having excellent characteristics, as well as a good price-quality ratio, have proven themselves well. Condor paints are sold in all building hypermarkets and many stores for summer residents.
Slate painting

So, the roof is prepared, the paint is selected, you can start painting the slate. And here an important question arises: is it possible to paint slate in wet and humid weather, will this not damage the quality of work? Hurt! It is better to paint in dry and warm weather.

Reviews of those who painted slate themselves say that work done on a warm spring day gives the best results and the paint lasts longer after spring application than if it is done in a hot summer. For painting, a roller, brush or spray is used, the paint is applied in two layers, with the first one having completely dried beforehand.

If all operations are performed correctly, the old-new slate roof will last for a very long time, and the paint will retain color and will not crumble even after heavy rainfall and temperature changes.
Slate preparation

The process of preparing the slate is to clean it from any debris. It should be noted that even new material often needs this procedure, since it may contain adhering particles of asbestos cement, which are invisible at first glance. To remove them, you can use the usual small spatula.

Advice! Before you paint the slate fence, you should break through the grass, which usually grows along it and interferes with painting.

If the slate has already been used, then it is necessary to clean it more carefully. To do this, use a hard metal brush, processing every centimeter of the surface.

Slate cleaning field, it should be wiped with a damp cloth to remove dust and small debris.
Padding

The next step is priming. For these purposes, it is best to use an acrylic universal primer.

The instructions for applying it look like this:

1. first of all, the canister with soil must be thoroughly shaken;

2. then the liquid must be poured into a container into which it will be convenient to dip the brush;

3. Next, you need to moisten the paint brush in the ground, slightly squeeze it against the walls of the container and then apply the liquid to the surface of the slate. The primer should lay down in a uniform thin layer, therefore it is necessary to avoid streaks and a large accumulation of liquid in certain areas.

If you plan to paint flat slate, you can use a paint roller to apply the primer;

4. after the surface has dried, the procedure must be repeated again.

Advice! If you need to cover a large area with soil, you can use a spray gun or sprayer.

This completes the priming process.
Paint selection and preparation

Before you paint flat slate or corrugated material, you need to decide on the paint. The best choice in this case are polymeric water-dispersion compositions. Moreover, it is necessary to use paints that are designed to cover the roof or facade.

It should be noted that polymer compositions are of three types:

acrylic;

silicone;

latex.

The most durable are silicone and latex paints, however, their price is very high - ~ 4000-5000 for a 10-liter bucket. Therefore, you can use acrylic paint, which is much cheaper, but it is also quite durable.

As a rule, water-based paints are sold white and require tinting. This process consists in adding the required amount of color of the desired color, which allows you to achieve any shade.

As a rule, in stores that sell paint and varnish coatings, there are special tinting machines. They allow you to paint the entire batch of purchased paint in the same color of your choice.

Note! When painting the roof, paintwork should be purchased not only for slate, but also for other surfaces. For example, Zinga anticorrosive electrically conductive paint is suitable for fencing and ebbs. For painting chimneys, it is better to use fire-retardant paints for metal Polistil.

If it is not possible to perform tinting when buying paint, you need to independently determine the proportions of the color scheme, first painting a small amount of the composition. After that, the same amount of color should be added to all containers with paint and mixed thoroughly.
Painting

The final stage is painting, which is performed in the following sequence:

1. before use, the paint must be mixed;

2. then it should be poured into a container into which it will be convenient to dip a paint brush or roller (if flat slate is being painted);

3. after that, the painting tool should be moistened with paint, wring it out slightly and apply a coating to the surface. This stage is the most critical, since it is necessary to ensure that the coating lays down in a uniform thin layer, and at the same time there are no unpainted areas;

4. when the paint dries, the procedure must be repeated again.

This completes the slate painting process. It should be noted that this operation can also be performed using a spray gun.
Conclusion

The process of painting slate is quite simple and fast. However, it must be borne in mind that the quality of the work done depends on the preparation of the surface. Therefore, it is necessary to pay special attention to cleaning the slate from dirt and priming.

Paint and primer for slate: Shikril Among the special paints and varnishes produced to protect slate is the acrylic paint Shikril, which is based on organic solvents. This paint is used to finish not only asbestos-cement slate, but also concrete plinths, cement-sand tiles and other external surfaces that need alkali-resistant painting.

With the help of Shikril paint, damaged areas of previously painted surfaces that need urgent repair are updated. The basic line of colors includes: white; gray RAL 7040; burgundy RAL 3011; brown RAL 3009; green RAL 6032. Other paint shades can be made to order. Shikril - paint for slates Shikril paint can be used to paint both old and new roofs. The paintwork has: water-repellent properties, otherwise called hydrophobic; high levels of hiding power and light fastness; special elasticity at low temperatures. Application of paint Shikril 1. The surface of the slate roof is cleaned of dirt, dust, residues of previously applied paint. 2. A preparatory layer is applied with the Shikril-Grunt primer of the same name, which is also intended for work on slate. For application use a brush, roller or spray gun. The roof is primed in one or two layers, while the next layer is applied after the previous one has completely dried. Usually this takes about an hour and a half. Work is carried out at a positive temperature of 15 ° C and above. The roof surface must be dry before starting treatment. Important! The use of a primer allows you to reduce the cost of painting slate by saving paint. 3. The roofing paint is thoroughly mixed, if necessary diluted to a working viscosity with solvents, which can be used as butyl acetate or white spirit. The slate roof is painted sequentially from top to bottom, thoroughly mixing the composition for painting 4. Shikril paint is applied in two layers using the same tools used for priming the surface. Important! When carrying out work, it is necessary to use personal protective equipment.

Other paints for slate

1. "KILPI" - Finnish acrylic roofing, which is produced by the well-known company Tikkurila. Used for painting tiles, slates, roofing material, bituminous fiber boards and other materials. Valued for its special elasticity at very low temperatures. One liter of coloring solution is enough for painting no more than two square meters of the surface. Finnish slate paint 2. DACHBESCHICHTUNG is a German roof coating produced by DUFA. This semi-gloss paint is suitable for the complete painting and partial repair of painted surfaces made of clay, concrete or slate roof tiles. The paint coating freely passes water vapor, while protecting the roofing material from the effects of precipitation. Differs in high degree of adhesion. If the substrate is professionally prepared, the layer of paint can be preserved for many years. One liter of the coloring mixture is enough for 7 square meters of roofing. 3. POLIFARB - AKROFARB is produced by the Polish manufacturer of paint and varnish coatings "Debiza". The paint is made on the basis of acrylic dispersion. It is used for painting not only the roof, but also the facade, finished with clay-cement slabs or slate. The applied coating dries in three hours. A liter of paint is enough to paint 5-7 square meters of roof surface. Shades of paint for slate

4. "AKRYLAKMA-Slate" - Ukrainian water-dispersion acrylic paint, designed for work on slate. Produced by the LAKMA company in two color options: red-brown and brown. After staining, an even, uniform matte film is obtained, which dries in just one hour. One liter is enough to paint 6 square meters of slate surface. 5. "UNISAL" - Slovak water-dispersion paint for slate roofs, which is manufactured in Russia by the company "Kvil", located in the city of Belgorod. The production follows the technology of the HELIOS company operating in Slovenia. Valued for a high degree of hiding power, weather and light resistance. Used for household and industrial painting of slate, as well as other asbestos-cement products. Can be applied by hand or machine. In the color scheme of the paint there are such shades as: white; brown; grey; oxide red; black; green. The time required for the coating to dry is no more than one hour.

One liter of paint is enough for five square meters. 6. "POLIFAN" is produced in the city of Kolomna by the company "Polifan-L". Universal paint, which is used not only for painting slate, but also for painting reinforced concrete, plastered surfaces, brick, chipboard, DSP, curb stone and other materials intended for exterior decoration. Paint consumption is one liter per three square meters of surface. German paint for slate roofs In addition to the listed paint products for slate, there are other brands on the market, which allows the buyer to choose the best option, taking into account price and quality. Now there should be no questions about how to paint flat slate or wavy, because they are based on the same asbestos-cement base. Now you know that you can also make an old slate roof stylish. In this case, the whole appearance of the house will change for the better.

1. From the beginning, the first layer is applied, immediately after the primer has dried. The first layer, as a rule, takes about two-thirds of the entire paint, since a clean surface absorbs it very easily.

2. After the first layer of paint has dried, a second layer is applied on top of it, the so-called finishing one. The second layer is applied more carefully and carefully. To apply it, you can use a brush or an apparatus for spraying paint - an airbrush.
For painting the roof, a wide brush or brush is suitable, which will allow you to thoroughly rub the paint into all the flaws and cracks in the surface.

The spray gun, which can also be rented at the store, will help to significantly facilitate the work and improve its quality.
In addition to all of the above, there is another "old-fashioned" way to restore slate. Cement is taken, diluted to the consistency of liquid sour cream with water, PVA glue is added in the amount of 1 cup per 1 bucket of the mixture. This covers the roof. In this way, you can not only improve the appearance of slate, but also reliably repair small cracks.

Ways to paint slate:

brush painting

This is the easiest way from a technical point of view. But at the same time, it is very difficult to achieve a high-quality uniform coating with a brush, because the coloring is done in strokes.

Spray painting

It is NOT RECOMMENDED to use such sprayers for painting the roof. This is due to the fact that manufacturers do not recommend diluting the paint by more than 5%.
- painting with a professional airless spray painter

Airless spray is the ideal technology for applying paints in construction and renovation. Using a high-pressure pump (200 atm.), the paint is fed through a special hose to the spray gun. In airless spray technology, there is no need to dilute the paint, because such a high pressure is enough to apply paint of any viscosity. When painting a slate roof with airless spray, you can achieve a uniform and uniform coating.

Slate should be painted at a relative humidity of 60% and a temperature of at least 15 degrees. With high-quality surface preparation and proper application, acrylic paint will serve you for more than 10 years.

Do-it-yourself painting of slate with your own hands will significantly save your budget for home repairs, as the services of professional craftsmen are not cheap. Having carried out painting once on your own, you will learn how to paint slate no worse than experienced craftsmen.

The fact that the use of paints allows slate to acquire the desired color is understandable. But, in addition to the decorative function, coloring compositions have more important properties. Recall that slate is a porous material, prone to the formation of microcracks. Water easily gets into them, which, with the onset of winter cold, turns into ice and begins to “tear” the fibers of the material. The same deforming processes occur when mosses and lichens grow in the pores. The problem of premature destruction of slate is solved by painting. Coloring compositions form a strong film on its surface, blocking access to asbestos cement for water and microorganisms. As a result, the deforming processes are suspended and the slate receives additional years to its operational life.

Painted slate, thanks to a film of paint, becomes smooth. Atmospheric moisture does not linger on it and snow easily melts. And if dirt accumulates on the roof, it can simply be washed with water from a hose or car mini-wash.

Another problem solved with the help of painting is the theoretical harmfulness of slate. The version about the non-environmental friendliness of asbestos-cement sheets came to us from the West and is successfully cultivated by many manufacturers of more expensive and modern roofing materials. Its essence lies in the fact that slate emits asbestos dust during operation, which is harmful to the environment and human health. There are many proofs of the injustice of this opinion, however, if this aspect haunts you, the paint applied to the slate will completely block the possible exit of asbestos dust and preserve your health by 100%.

Thus, staining slate allows you to:

increase the decorativeness of the roof;

to give asbestos-cement sheets a color with the desired degree of haze (matte, semi-gloss, glossy);

smooth the surface of the slate;

protect the slate from the growth of mosses and lichens on it;

prevent the appearance of cracks;

block the dusting process of slate;

· increase the durability of slate by 1.5 times (subject to periodic renewal of the paint layer).

Type #2 - acrylic paints on organic solvents

These paints are diluted not with water, but with organic solvents. Ingredients: acrylic resin (synthetic latex), colored pigments, additives, organic solvent (most often white spirit). The degree of haze of such paints depends on the resin content. The larger it is, the more pronounced the gloss of the dried film of the composition.

Paint on organic solvents is different:

a stronger film than water-dispersion formulations;

· high water-repellent properties;

elasticity;

Lightfastness and long-term preservation of color intensity;

pungent odour.

Solvent-based acrylic paints are presented on the market in a small assortment. Due to its excellent quality among craftsmen, the Eternit matte paint from Polifarb (Ukraine), produced in red, brown and green tones, has proven itself. Due to wear resistance, the color of this paint practically does not change even by the end of its service life. Another popular option is Shikril paint from KrasCo (Russia). It is characterized by ease of use and a high degree of hiding power.

Type #3 - silicone (silicone) paints

Silicone paints are considered to be the most reliable and durable for slate. They are suspensions of pigments and fillers in an organosilicon (silicone) binder. Due to the presence of silicone, this type of paint is characterized by increased elasticity, so some of them are able to cover cracks up to 2 mm thick!

Properties of silicone paints:

high strength;

maximum elasticity, the possibility of carrying out "repair" work and sealing sufficiently wide cracks in the slate with the help of a silicone composition;

· fungicidal and algaecidal properties that prevent the reproduction of microorganisms (in the pores and on the surface of the slate);

high water and dirt-repellent properties;

the possibility of excluding the stage of priming from the painting process;

· silicones are not toxic, have no aggressive smell, are fireproof;

The service life is 10-15 years.

Repeatedly tested for painting slate enamel "KO-slate", produced by the plant "Kremniypolimer" (Ukraine). It impregnates the top layer of slate, providing a deep, long-lasting color. The company produces "KO-slate" in two colors - red-brown and green, however, there is the possibility of tinting to order.

At the same Kremniypolimer plant, OS-5103K enamel (color - green) is produced, intended for protective and decorative painting of many materials, including asbestos cement. The material has increased heat resistance, acid and alkali resistance, resistance to chemical gases. Due to this, painting slate with OS-5103K enamel can be performed at industrial enterprises.

Type #4 - Alkyd Slate Paints

The composition of alkyd slate paints consists of alkyd resins, pigments, fillers in an organic solvent. Alkyd enamels, as a rule, are quick-drying, form an elastic film that is not prone to cracking.

Properties of alkyd slate enamels:

· high moisture resistance;

Increased adhesion to slate;

resistance to atmospheric influences;

Does not require the mandatory use of a primer before painting;

Longevity - 5 years.

As an example of high-quality alkyd enamel, one can cite "Quick-drying enamel for slate" from the company "Impulse" (Ukraine). It is characterized by very fast drying (at 20˚C the layer dries in 1 hour) and does not have a strong odor. It is available in the most suitable colors for the roof: red, brown, blue and green. Another alkyd-based product is Roof Enamel manufactured by Empils (Russia). In addition to high protective qualities, the paint has a wide tinting base, consisting of 10 colors.

Type # 5 - polymer paints "Liquid plastic"

They are a suspension of polymers (polyurethane, vinyl or polystyrene), pigments and additives in a solvent. After the composition dries and the solvents evaporate, the paint forms a thin plastic (polymer) layer on the slate with a glossy or matte surface.

Characteristics of "liquid plastic":

absolute moisture resistance (completely blocks the access of water to the slate);

chemical inertness

· high speed of drying;

environmental friendliness;

fire safety (does not burn after drying);

resistance to fading;

application without prior priming;

high frost resistance, as well as the possibility of application at low negative temperatures (up to -10˚C);

Durability of the coating - 10-15 years.

Reliable polymer paint Liquid Plastic is produced by Denalt (Canada). This paint is produced on an alkyd-polyurethane basis, which gives the composition a special strength.

PPG-1 polymer paint produced by Komoil (Belarus) is another reliable choice. Its composition contains polystyrene, which, after drying, forms a protective and decorative coating of various colors. The PS-160 TM "Sticolor" paint (Ukraine) also has a polystyrene base. It is a weather-resistant enamel that forms an elastic surface with a glossy effect.

Variety of colors and tinting options

The most popular paint colors for slate are red, brown, green. They appear in the assortment of most paints. At the same time, the color base of a particular material can include both 5 and 100 different colors and shades. But what to do if you want to paint slate, for example, in a light yellow color, but there is no such shade in the assortment of the selected paint? Coloring will come to the rescue. Most paint manufacturers provide for the possibility of coloring their paints in any tones that correspond to color catalogs - RAL, NSC, Symphony. Tinting at the enterprise is carried out on special devices, using tinting pastes and paints.

Also, tinting can be done independently by adding tinting paste to the purchased paint, and stirring the mixture with a mixer.

Slate coloring technology

The choice of paint and its color is a responsible process. But, unfortunately, even the most expensive and high-quality enamel cannot guarantee a reliable decorative and protective coating on slate. If you do not follow the painting technology, then the pigmented film will almost certainly behave unpredictably. For example, it will begin to crack, swell or crumble much earlier than the end of its service life (perhaps even a few days after painting). Therefore, you also need to be able to paint slate correctly!

The process of staining slate is carried out in several stages:

Stage # 1 - preparing the surface of the slate

The slate surface to be painted must be free of dust, dirt, fungal and plant deposits, unstable (or incompatible with the selected paint) coatings.

Cleaning can be done in two ways: dry mechanical (manual or mechanized) and using water jets under pressure. Sometimes these methods are combined and performed alternately.

For manual mechanical cleaning, wire brushes are used to scrape off efflorescence, dirt, moss and lichens. The work requires considerable effort and accuracy, while the cleaning speed is very low. You can clean the slate faster and better with the help of tools. To do this, a nozzle is put on a grinder or a drill, which is, in fact, the same brush for metal. When the tool is turned on, it begins to rotate, cleaning off the surface defects of the slate.

The second cleaning method consists in washing the slate with high-pressure water jets, which are created by car mini-washers (Wagner, Karcher, etc.). In this case, the created pressure should be within 100-250 atmospheres. Mini-sinks that release water with a lower pressure will not be able to remove contaminants, and higher pressure mechanisms will destroy not only defects, but also the slate itself.

Stage # 2 - priming

To impregnate the top layer of slate, special compounds are used - primers. They are selected in accordance with the instructions for using a specific coloring composition. For example, silicone paint Ko-slate is combined with silicone primer KO-011C. However, organosilicon paints, as well as Liquid Plastic compositions and alkyd enamels, can be applied without prior priming. Acrylic paints, on the other hand, require the use of a primer. These can be either special compounds (for example, Dupa-grund for Alpina DACHFARBE), or paint diluted according to the instructions. To obtain an impregnating primer for Alpina DACHFARBE acrylic paint, it is enough to dilute it with water up to 10% by volume.

The primer is applied to the slate in 1-2 layers with a brush, roller or spray gun.

Stage # 3 - directly painting

On top of the dried primer, direct staining is performed. As a rule, it is enough to apply 2 coats of paint, the first of which will be the base, and the second - the finish. The base layer is the main one, it must carefully cover the entire surface of asbestos cement, including ends, corners, joints, ridge and corner parts. After the first layer has dried, paint a second time. The task of the second (finish) layer is to ensure that the painted slate gets a bright uniform color, without streaks.

Processing is carried out with a brush, roller or spray.

Such a simple technology will give slate color and high decorativeness, comparable to the beauty of tiles, bituminous or metal roofing. In addition, painting (with periodic updating of paint) will become a reliable protection of the roof from environmental influences and will increase its service life for decades.

And for sprayers of this type, highly diluted paint is required.