What is the best paint to paint slate?

Flat slate can not only be painted, but even necessary. The fact is that painting significantly extends the service life of slate and reduces emissions of harmful asbestos into the atmosphere (after all, slate is a rather fragile material, under the influence of certain forces it can begin to crumble, and paint protects it to some extent). The service life of painted slate increases by one and a half to two times. The paint prevents moss from growing. In addition, painted slate looks much more attractive and fun than classic gray.

The first step is to purchase everything you need. Let's start with paint. To paint slate you can use:

• acrylic paints. One of the best options. Acrylic paint is non-toxic, dries quickly, and creates a smooth, wear-resistant surface. A roof covered with acrylic paint better repels moisture, due to which water and snow melt off much faster;
• silicone based paints. They are also non-toxic and protect the roof from precipitation. They have such disadvantages as high cost and high consumption when painting, which further affects its cost in the direction of increase in price;
• liquid plastic. This polymer enamel is a practical and durable coating. This coating dries quickly, forming a smooth film on the roof. It is quite inexpensive, but is inferior to acrylic paints in frost resistance, so it’s worth thinking about;
• oil enamels (for slate). The enamels are also durable and come in a wide range, so there is room to go wild. However, this option has many disadvantages - the service life is about three years and the enamels take a very long time to dry (because of this, you need to carefully select the day when painting will take place, you need an accurate weather forecast);
• silicone paint (for slate). It is a set of several silicone-based dyes and fillers. The material turns out to be durable, but you need to apply it in two layers (at least). Among the disadvantages, it can be noted that before application it is necessary to carefully prepare the surface;
• bitumen-based compositions. Cheap and extremely moisture- and frost-resistant paint. I don’t even want to comment on the disadvantages: the composition is toxic, takes a long time to dry, and wears off quickly;

You will also need brushes, and since our surface is flat, a roller would also be an excellent option. Convenient container for paint. A brush with stiff bristles + a brush with metal bristles for particularly neglected areas. Drill with a brush attachment. Primer (special, for slate). Ideally, you could get a washing machine (Kärcher or similar).

If everything is ready, you can begin work on site. The first step is to inspect the surface of the roof.

If damaged slate segments are found in some places, they must be repaired. To do this, use the following mixture = cement + PVA glue + fluffed asbestos + water. Using the resulting mixture, we restore chips and other damage, of course, after cleaning them first.

Now we begin to clean the entire surface from moss and any dirt. This is an important stage, since the quality of the painting and the service life of such a coating will depend on the quality of the work performed. Wash the roof very thoroughly, and when it is dry, you can proceed to the next stage - primer.

Slate priming no less important stage, it is the primer that ensures good adhesion of paint and slate, and therefore directly affects the durability of the coating. In addition, priming will reduce paint consumption.

And finally, after priming, you can proceed to the final stage - painting. This work It makes more sense to do it from top to bottom. You can work with brushes or a roller, but the best option, of course, is a spray gun. Whatever type of paint you use, it is advisable to apply at least two layers. Before applying the second and each subsequent layer, of course, you must wait until the previous layer has completely dried.

As you can see, if you are not afraid of heights, then the procedure for painting slate is not that difficult, the main thing is to wait for good weather and do everything consistently.

By the way, now it’s not such a problem to find already painted slate.

The content of the article

A material that has been used to cover roofs for many years and has excellent performance qualities is undoubtedly slate. It cannot be taken away from its mechanical strength, good water resistance, and resistance to various types of influences, but it also has a significant drawback.

Compared to other modern roofing coverings, playing with all the colors of the rainbow, slate seems unpresentable, and after several decades, it even looks unimportant. But the situation can be improved. This requires painting the slate. With the help of modern paint and varnish materials this problem is completely solvable.

Choosing paint for slate

You often hear that painting asbestos-cement materials is short-lived, the paint layer crumbles after the first winter, and in general, it is better not to mess with this matter. In response to this I would like to say, when wrong choice material and non-compliance technological requirements even painted wooden door in a year it will lose its shine. Therefore, you need to clearly understand how and with what to paint slate. Let's start with choosing paint.

Today, paint intended for application specifically to asbestos cement materials, produced both foreign and domestic producers. These are mainly acrylic or silicone based compositions.

• Organosilicon paint for slate KO-slate. It is a mixture of special fillers and silicone-based dyes. Forms a durable coating that is resistant to mechanical stress, which, in addition to its decorative function, prevents the release of asbestos particles into the atmosphere.

The paint is incompatible with other types of coatings; it is applied to a surface pre-treated with silicone primer. To obtain the desired result, two coats are required.

• Triora slate paint. Domestic slate paint on acrylic base. Products under the Triora brand are distinguished by high performance qualities. It is also applied in two layers to a previously prepared surface. Old coatings (oil, silicone) must be completely removed. The paint has a more affordable price, and at the same time has good light fastness and is resistant to moisture . It can be tinted to suit the desired shade.
• Covering for slate roofs Kilpi from Tikkurila. Paint based on modified acrylate dispersion. Quite expensive, but in this case, the price is justified by the quality of the coating. The applied paint layer remains elastic even at low temperatures. It can also be applied after surface treatment with recommended materials.

Other companies from Russia, Germany, and Poland are also producing similar paints. Therefore, the choice of material is quite large. The main thing to remember when choosing is that the paint should be intended specifically for slate.

Surface preparation

Like any other surface, slate must be carefully prepared for painting; such preparation is carried out in several stages.

Painting old slate that has been in use for a considerable time begins with a thorough inspection.

Pay special attention to northern slopes; moss colonies may form on them; it must be removed.

This can be done using ordinary metal brushes. To facilitate the process, use hand-held power tools with special attachments. However, in this case you must act carefully so as not to damage the slate.

After removing vegetation, you need to check the entire roof for integrity. If small cracks or breaks are detected, they should be repaired using a special mixture. This mixture is prepared from:

• PVA glue diluted with water,
• cement,
• fluffed asbestos.

Only after all defects have been eliminated will it be possible to paint the slate.

The next step is removing debris and dusting the roof surface. You can do this with regular brushes, or you can do it with water. In this case, the slate must then be allowed to dry. An excellent result is obtained when washing slate with car washers such as Karcher. After this treatment, the slate looks like new.

It is advisable to treat the surface with antifungal drugs - this will increase the service life of the future coating, and the slate in general.
The most important part of coating preparation is priming with compositions recommended by the manufacturer. It is this treatment that increases the adhesion of materials and ensures reliable contact between paint and coating in the future. Poor treatment is the main cause of paint peeling, so you need to make sure that there are no untreated areas on the roof.

In addition, the primer reduces paint consumption. Asbestos cement absorbs such materials very well, so painting slate with your own hands on a poorly treated surface can be disappointing (spots with different color intensities will be clearly visible).

Roof painting

It is advisable to carry out painting in cloudy weather, at an air temperature of about 15 degrees Celsius. Such conditions are optimal for the paint to dry and form a reliable coating. We often hear the question, is it possible to paint slate at temperatures close to zero? Some manufacturers claim that their material is suitable for such application conditions.

But is it worth the risk? expensive material? Moreover, under such conditions, the period for the coating to acquire its properties significantly increases.

Paint application can be done either manually or using sprayers, do what is most convenient for you. It is worth noting that the paint consumption indicated on the container most often does not correspond to reality. In fact, it will come out almost twice as large. Keep this in mind when purchasing paint.

After applying the first layer, it must be allowed to dry. This period different compositions differs, information can be found on the packaging. It is true that in this case, it is worth keeping the painted slate for a little longer before applying the second layer. The fact is that all such information applies only to ideal conditions, and in real work it must be treated with appropriate understanding.

How and with what to paint a slate roof

More recently, slate was so popular that two-thirds of buildings in our country were covered with it. Currently, in conditions of constant competition, each manufacturer is trying to improve the quality and diversify the roofing materials they produce. Despite this, slate is still in demand, and all thanks to its positive aspects, which have remained unchanged over time. This is a low price, good water and frost resistance, and a long service life. But these qualities are not always the main ones when choosing a material for the roof, especially considering that over time slate acquires a gray-green color, especially on the north side, which is often covered with moss. And just new factory slate will not add any zest to the new home.

Recently, such types of slate as profiled sheets have been used, flat slabs and roofing panels.

If, after all, the choice is made in favor of slate, there is one option that will help decorate appearance at home, namely painting slate.

Preparing slate for painting

To paint slate you need to prepare following materials and tools:

• metal brush;
• drill;
• Bulgarian;
• jet washer high pressure;
• construction antiseptic;
• brush;
• spray;
• respirator;
• glasses;
• gloves;
• acrylic or enamel paint;
• primer.

Before you start painting, you need to clean the slate. especially if it has been in use for several years.

A slate roof can be cleaned in a variety of ways.

A regular metal brush is suitable for cleaning slate, but it is better to use a steam unit.

The first is to clean it yourself using a regular metal brush. This method is the most labor-intensive and requires large quantity time, efficiency and quality leave much to be desired. The main requirement when performing this work is that the roof is not wet.

The second method is to clean the roof using a special attachment on a drill or grinder. Cleaning the roof in this way has only one advantage - it is quality due to the use of power tools. This does not reduce the cleaning speed.

The third method is the most effective, and most importantly, it allows you not to stop working due to weather conditions. Its essence lies in the fact that slate is cleaned with water under high pressure. In order to clean the roof this way, you will need a specialized washer to create a high-pressure jet. The optimal pressure for such a process should not exceed 250 atmospheres. This is due to the fact that an increase in pressure above the norm can damage the slate itself, and a jet with low pressure levels will not allow the surface to be properly cleaned.

The undoubted advantage of this method is that it will take only 1-2 days to clean a roof with an area of ​​100 m2.

Treatment of slate before painting

The next step in preparing slate for painting on your own is treating it with an antiseptic followed by hydrophobization.

As you know, fungal spores multiply in a damp environment, so the slate needs to be treated with a product to increase water repellency.

The result of cleaning the slate: not a trace of debris, mold or fungi remained.

It is also important that old slate has increased porosity and is therefore susceptible to premature destruction in conditions high humidity. Hydrophobization is used to prevent this and to increase the service life of slate.

To give the treated roof an aesthetic appearance, they resort to painting it. Of course, in ideal painting of the roof (slate) is carried out immediately before the start of roofing work. But, as a rule, it is after several years that the owners only begin to think about what to do with the terrible roof and how to paint the slate that is already lying there. In turn, the stage of painting the roof is the most important and final.

Sometimes the average person may wonder whether slate can be painted. The answer is simple: it is not only possible, but also necessary. Paint is an additional protective layer, which will strengthen the slate structure from destruction. Painted slate is less susceptible to severe frost.

Choosing paint for slate

Paint on slate is easily applied with a regular brush.

Correctly chosen paint is the key to not only the beauty of the future roof, but also high-quality protection. Nowadays, slate paints are presented in acrylic and enamel samples.

Experts recommend using these types of paints for painting, since they are designed to close all microcracks on the slate, and the film formed as a result of painting will cope perfectly with atmospheric phenomena. These paints contain binding components, making them ideal for painting flat slate. In the case where the roof is used in extreme weather conditions, with different temperatures environment, it is best to use quick-drying enamels.

And yet, when you need to choose what to paint slate with, it is recommended to turn to specialists. They will always help you choose suitable paint taking into account the actual condition of the roof.

The quality of painting is influenced not only by correctly selected paint, but also by the technology of the application process itself. Basically this process can be broken down into three stages:

Instead of a brush, you can use a special paint sprayer - this will significantly speed up the process of updating the roof.

1. Coating the slate surface with a primer.
2. Painting the slate with the first coat of paint.
3. Applying the second (finishing) coat of paint.

For priming it is better to use compounds with deep penetration, which will provide significant strengthening of the slate surface. It is much easier to paint a pre-primed roof, since, thanks to the primer, the paint will apply more evenly, and its consumption will be significantly less than without pre-treatment. The recommended primer consumption is 100-150 g per slate sheet. It is best to apply the primer with a sprayer, at an air temperature ranging from +5 to +30 degrees. Complete drying time is about 12 hours. After this time has passed, you can only begin to paint. It is not recommended to work with soil solutions with unprotected hands; you should avoid getting them in your eyes. Properly preparing the slate surface before painting is the guarantee that the paint will last for many years and will not have to be repainted.

After applying the primer, you need to let the roof dry for a day, and the next day you can start painting it.

Slate painting technology

When starting to paint slate with the first layer, you need to take into account the fact that it is the main one and 2/3 of all paints and varnishes are consumed on it. The slate sheet painted with the first layer should not have gaps; do not forget about the ends and corners. It is necessary to pay due attention to places that are most difficult to reach. Already after applying the first layer of paint, the roof is given an unrecognizable appearance, but you still shouldn’t stop there. The next layer is no less important.

You can start painting the finishing layer after the slate painted with the first layer has completely dried. Applying paint a second time will give the already painted roof a uniform color and get rid of streaks. As a rule, 1/3 of all paint is spent on this layer.

Painting slate by hand is not so much a long process as a labor-intensive process that requires certain skills.

The technology described above can be safely used for painting both wavy and flat slate. Thanks to this simple technology, roofs are given an aesthetic appeal that will decorate any building. And, of course, painting slate will increase its service life under environmental conditions.

http://kryshikrovli.ru

In the old days, more than half of the private houses on the territory of Russia. It retained its hegemony for a long time until the construction market opened up to new materials with a more impressive appearance, a variety of installation methods and better performance characteristics. Now the share has decreased significantly, however, experienced builders advise not to reset this practical material out of the question, because in terms of cheapness, durability and reliability it gives a head start to the most modern species roofs. The only problem that forces us to abandon this finishing option is its inexpressive appearance. Fortunately, there is a simple and inexpensive solution - painting the slate with a special composition.

Coloring tasks

- a fairly common roofing material, the gray color of which becomes boring to homeowners over time. Experienced craftsmen They don’t see any reason to refuse installation if the reason is only an inexpressive color, because slate paint can easily solve this problem. It is worth painting a slate roof because:

Important! Best time to give a color to the roof, which was covered with flat or corrugated slate, the desired color - before installation work. However, this happens extremely rarely in real life. More often, homeowners think about how to improve or update their roof 5-7 years after construction.

Preparing for coloring

The preparatory stage of staining is perhaps the most important in the entire process. The durability and quality of the coating depends on how the surface is prepared. Therefore, slate preparation must be treated with care, carefully following the technology. Before painting slate, if it is in use, you need to take care of cleaning its surface. This task can be accomplished in three ways:

Important! All slate cleaning work is carried out in protective gear, since the asbestos dust released during the process is dangerous for respiratory tract and mucous membranes. Be sure to use wet respirators, protective eye masks and protective clothing. To reduce dust, you can moisten with water from a spray bottle and work outdoors.

Protective covering

Note! Painting slate with your own hands, starting with high-quality surface preparation, gives an unsurpassed result. Activities for cleaning, disinfecting and priming the roof will make the coating rich, uniform and durable. During the application process, do not forget to process the cuts and edges of the material.

Paints used

Whether DIY slate paint will benefit the roofing depends on the correct choice of composition. Experienced craftsmen advise using paint and varnish products that are resistant to temperature changes, moisture and ultraviolet rays. The most successful options are:

Important! To obtain a durable coating, work on its application is carried out in the warm season, at a temperature of +5 - +20 degrees, in dry weather. The main condition for the quality of painting is compliance with the drying time and the recommended number of paint layers.

With a little effort, with minimal financial investments you can turn a gray, dull roof into an architectural masterpiece. The right color and staining of slate works wonders, making it an ideal material for blood.

Video instruction

In the domestic construction market, slate has remained one of the most popular materials for many years. Today it is used both unpainted (for dachas, for outbuildings and non-residential premises), and in painted form. Last option can add additional aesthetics to your home. However, if you decide to transform the roof of your 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 reality, this definition get in and flat sheets from asbestos-cement crumbs.

What is the best paint for slate?

Modern choice materials are enormous, and this makes it possible to make the roof of a house truly individual. When choosing what to paint slate with, evaluate all the advantages and disadvantages of imported and domestic options and only then make a purchase.

Acrylic paint for slate

The list of undeniable advantages of acrylic or water-dispersed compositions includes:

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

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

§ Reducing the load on the rafters. Occurs due to improved conditions for snow removal from slate.

§ You can work with acrylic paint at air temperatures from +5°C to +35°C. The drying process takes 1-2 hours; complete polymerization of the composition takes a day.

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

Fast-drying enamel for slate

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

Liquid plastic for slate

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

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

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

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

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

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

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

The first stage is not as simple as it seems. Rags and sponges will be useless here. And even use hard metal brushes to clean off the old slate, which is long years covered with a layer of moss, it will be impossible. Here it is better to use something more serious. In particular, we can recommend a drill attachment in the form of a round stiff brush. With this attachment it is quite possible to clean the slate until it is suitable for use. further work condition.

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

You cannot skip the stage of cleaning 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 begin to peel off after a few days.

Old slate often has nasty cracks. It used to be difficult to deal with them. 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 emergency slate repair to eliminate a leak, but you want to truly 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 before use. suitable container and only then applied to the roof.

There are different types of mastics, and in order to perform slate repair work with their help efficiently, you need to read the instructions that come with them and, most importantly, follow all the recommendations that are set out in it.

After the slate is free of cracks, it is primed. Choosing primers for slate is not easy, since slate is made from a complex composition that may be incompatible with the primer. To play it safe, you can buy an acrylate primer, which is better suited for slate and other similar materials than others.

You can also prime the slate with paint. To do this, you simply 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. This paint will become reliable protection for roofing and will significantly extend the service life of slate.

Domestic slate paints:

§ Butanite (Russia). The composition contains polymer substances and mineral-silica additives. Butanite provides the roof with reliable protection from atmospheric influences and increases the frost resistance of the surface.

§ Polifan (Russia). The paint is suitable for working on slate, concrete, brick. To her undeniable advantages include durability, color fastness, wear resistance.

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

If processing is already installed roof, preparatory measures will be required. To do this, you should prepare a brush with metal hairs, an angle grinder or a drill with a special brush attachment, or a high-pressure car wash. The latter option will make the process less labor-intensive 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 proliferation of fungi and the appearance of plaque. The next stage is primer.

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

It is best to paint the surface in 2 layers. The composition can be applied using a roller or brush or spray. It is not recommended to paint slate in rainy weather or very hot days.

Before painting directly, the slate must be checked for hidden serious damage by careful inspection. If some sheets are cracked, they need to be replaced. Simultaneously with checking the surface condition slate sheets, the reliability of their fastening and, if necessary, additional reinforcement are checked. Then the most labor-intensive procedure is performed - cleaning and sanding the entire surface, which completely removes dirt and dark coating. This work is performed using an electric drill with a sanding attachment. Additionally, it would be a good idea to wash the slate with a powerful stream of water from an electric washer.

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

Choosing paint for slate

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

Acrylic enamel is water-based and fills microcracks well, protecting 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 instructions, 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 paint peeling. It is also good because it adheres perfectly to slate and is convenient to apply.

IN rubber paint slate contains special pigments that do not allow color shades to fade in the sun, so the roof will not have a dull gray color. A serious disadvantage of rubber paint is its toxicity, so increased attention should be paid to protecting the respiratory system and exposed skin when painting.
Slate paint 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 construction hypermarkets and many stores for summer residents.
Slate painting

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

Reviews from those who have painted slate themselves indicate that work done on a warm spring day gives the best results and the paint lasts longer after application in the spring than if done in the hot summer. For painting, use a roller, brush or spray; the paint is applied in two layers, with the first completely dry.

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

The process of preparing slate involves cleaning it of any debris. It should be noted that this procedure often requires even new material, since there may be adhered particles of asbestos cement on it, which are invisible at first glance. To remove them, you can use a regular small spatula.

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

If the slate has already been used, then it needs to be cleaned more thoroughly. To do this, you need to use a stiff metal brush, treating every centimeter of the surface.

When cleaning slate, 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.

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 paint brush in the ground, squeeze lightly against the walls of the container and then apply the liquid to the surface of the slate. The soil should lie evenly thin layer Therefore, it is necessary to avoid drips and large accumulations 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 bottle or sprayer.

This completes the priming process.
Selection and preparation of paint

Before painting flat slate or wavy material, you need to decide on paint. The best choice in this case is polymer water-dispersion compositions. Moreover, it is necessary to use paints that are intended for covering the roof or facade.

It should be noted that polymer compositions come in three types:

· acrylic;

· silicone;

· latex.

The most durable are silicone and latex paints however, the price for them is very high - ~ 4000-5000 for a 10 liter bucket. Therefore, you can use acrylic paint, which is much cheaper, but 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 desired color, which allows you to achieve any shade.

As a rule, in stores that sell paint 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 a roof, you should purchase paint coatings not only for slate, but also for other surfaces. For example, anti-corrosion conductive paint Zinga is suitable for fencing and flashings. To paint chimneys, it is better to use fire-retardant metal paints Polistil.

If it is not possible to perform tinting when purchasing paint, you need to independently decide on the proportions of the color, first painting a small amount of the composition. After this, the same amount of color must 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 painting flat slate);

3. after that painting tool You need to soak it in the paint, squeeze it out lightly and apply the coating to the surface. This stage is the most critical, since you need to ensure that the coating is applied in an even, thin layer, and there are no unpainted areas left;

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 bottle.
Conclusion

The process of painting slate is quite simple and quick. However, it must be taken into account that the quality of the work done depends on the preparation of the surface. Therefore, it is necessary to pay special attention to cleaning 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 not only for finishing asbestos-cement slate, but also concrete plinths, cement-sand tiles and others external surfaces, requiring alkali-resistant painting.

Using Shikril paint, damaged areas of previously painted surfaces that need urgent repairs are renewed. The basic range of colors includes: white; gray RAL 7040; burgundy RAL 3011; brown RAL 3009; green RAL 6032. It is possible to produce a different shade of paint on request. Shikril - paint for slate Shikril paint can be used to paint both old and new roofs. The paint coating has: water-repellent properties, otherwise called hydrophobic; high levels of coverage and light fastness; special elasticity when exposed to low temperatures. Application of Shikril paint 1. The surface of the slate roof is cleaned of dirt, dust, and remnants of previously applied paint. 2. Apply the preparatory layer with the primer of the same name Shikril-Grunt, 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, with the next layer applied after the previous one has completely dried. Usually an hour and a half is enough for this. Work is carried out at positive temperatures of 15°C and above. The roof surface must be dry before starting treatment. Important! Using a primer allows you to reduce the cost of painting slate by saving paint. 3. Mix the roofing paint thoroughly and, if necessary, dilute it to a working viscosity with solvents, which can be butyl acetate or white spirit. Paint the slate roof sequentially from top to bottom, thoroughly mixing the painting composition 4. Shicryl 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 coating for roofs, which is produced by the well-known company Tikkurila. Used for painting tiles, slate, roofing felt, bitumen fiber boards and other materials. Valued for its special elasticity at very low temperatures. One liter of coloring solution is enough to paint no more than two square meters of surface. Finnish slate paint 2. “DACHBESCHICHTUNG” is a German roof covering produced by the company “DUFA”. This semi-gloss paint is suitable for full coloring and partial repair painted surfaces made of clay, concrete or slate roofing tiles. The paint coating freely allows water vapor to pass through, while protecting the roofing material from the effects of precipitation. Is different high degree adhesion. When conducting vocational training The base layer of paint can last for many years. One liter of 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 roofs, but also facades 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. Slate paint shades

4. “AKRILAKMA-SLIFE” is a Ukrainian water-dispersed acrylic paint intended for work on slate. Produced by LAKMA in two color options: red-brown and brown. After painting, you get a smooth, uniform matte film that dries in just one hour. One liter is enough to paint 6 square meters of slate surface. 5. “UNISAL” is a Slovak water-dispersion paint for slate roofs, which is manufactured in Russia by the company “Kvil”, located in the city of Belgorod. During production, the technology of the HELIOS company operating in Slovenia is followed. It is valued for its high degree of hiding power, weather resistance 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 color scheme paints include 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, fiberboard, curb stone and other materials intended for exterior finishing. Paint consumption is one liter per three square meters surfaces. German paint for slate roofs In addition to the listed paint and varnish products for slate, there are other brands on the market, which allows the buyer to choose best option taking into account price and quality. Now there should be no questions about how to paint flat or wavy slate, because they are based on the same asbestos-cement base. Now you know that you can make yourself stylish old roof from slate. At the same time, the entire appearance of the house will change for the better.

1. Start by applying the first layer, immediately after the primer has dried. As a rule, about two-thirds of the total paint is spent on the first layer, since a clean surface absorbs it very easily.

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

A spray gun, which can also be rented in a 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. Take cement, dilute it with water to the consistency of liquid sour cream, add PVA glue 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 the slate, but also reliably seal small cracks.

Methods for painting slate:

Painting with a brush

This is the simplest method 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, since painting is done in strokes.

Pneumatic spray painting

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

Airless spray - perfect technology for applying paints in construction and repair. Using a high-pressure pump (200 atm), paint is supplied through a special hose to the spray gun. In airless spraying technology there is no need to dilute the paint, since such a high pressure is quite enough to apply paint of any viscosity. When painting slate roofing Using airless spraying you can achieve a uniform and uniform coating.

Slate should be painted at a relative air humidity of 60% and a temperature of at least 15 degrees. At quality training surface and correct 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 renovations, since the services professional craftsmen not cheap. Having done the painting yourself once, you will learn how to paint slate no worse than experienced craftsmen.

The fact that the use of paints allows slate to achieve the desired color is understandable. But, in addition to the decorative function, coloring compositions also have more important properties. Let us remember 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 compounds form a durable film on its surface, blocking access to asbestos cement to water and microorganisms. As a result, deforming processes are suspended and the slate receives additional years to its operational life.

Painted slate, thanks to the paint film, becomes smooth. It does not retain atmospheric moisture and snow melts off easily. And if dirt accumulates on the roof, you can simply wash it off with water from a hose or car wash.

Another problem that can be solved by painting is the theoretical harmfulness of slate. The version that asbestos-cement sheets are not environmentally friendly came to us from the West and is successfully cultivated by many manufacturers of more expensive and modern roofing materials. Its essence is that slate during operation emits asbestos dust, which is harmful to the environment and human health. There is much evidence that this opinion is unfair, however, if this aspect bothers you, paint applied to the slate will completely block the possible release of asbestos dust and will 100% preserve your health.

Thus, staining slate allows you to:

· increase the decorative effect of the roof;

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

· smooth the surface of the slate;

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

· prevent the appearance of cracks;

· block the slate dusting process;

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

Type #2 - acrylic paints with organic solvents

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

Organic solvent paints are different:

· more durable film than water-dispersed compositions;

· high water-repellent properties;

· elasticity;

· lightfastness and long-lasting color intensity;

· pungent odor.

Solvent-based acrylic paints are presented in a small range on the market. Thanks to excellent quality Among craftsmen, matte paint “Eternit” from Polifarb (Ukraine), produced in red, brown and green, has proven itself. Due to its wear resistance, the color of this paint practically does not change even at the end of its service life. Another popular option is Shikril paint from KrasKo (Russia). It is easy to use and has a high degree of coverage.

Type #3 - organosilicon (silicone) paints

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

Properties silicone paints:

· high strength;

· maximum elasticity, the ability to carry out “repair” work and seal fairly wide cracks in slate using a silicone composition;

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

· high water- and dirt-repellent properties;

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

· silicones are non-toxic, do not have an aggressive odor, and are fireproof;

· service life is 10-15 years.

Repeatedly tested for painting slate, KO-slate enamel, produced by the Kremniypolymer plant (Ukraine). She impregnates upper layer slate, providing deep, long-lasting color. The company produces “KO-slate” in two colors – red-brown and green, but there is the possibility of custom tinting.

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

Type #4 - alkyd slate paints

Alkyd composition slate paints consists of alkyd resins, pigments, fillers in an organic solvent. Alkyd enamels, as a rule, dry quickly and form an elastic film that is not prone to cracking.

Properties of alkyd slate enamels:

· high moisture resistance;

· increased adhesion to slate;

· weather resistance;

· does not require the mandatory use of a primer before painting;

· durability – 5 years.

An example of high-quality alkyd enamel is “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 has no pungent odor. Available in the most suitable colors for the roof: red, brown, blue and green. Another alkyd-based product is “Roof Enamel” produced 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 with a glossy or matte surface on the slate.

Characteristics of “liquid plastic”:

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

chemical inertness

· high drying speed;

· environmental friendliness;

· fire safety (does not burn after drying);

· resistance to fading;

· application without preliminary priming;

· high frost resistance, as well as the possibility of application with small 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 base, which gives the composition special strength.

Polymer paint PPG-1 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 paint Ps-160 TM “Sticolor” (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, and green. They appear in the range of most paints. At the same time, the color base of a particular material can include both 5 and 100 various colors and shades. But what to do if you want to paint the slate, say, light yellow, but the selected paint does not have such a shade in the range? Tinting will come to the rescue. Most paint manufacturers provide the ability to paint their paints in any tone corresponding to color catalogs - RAL, NSC, Symphony. Tinting at the enterprise is carried out using special equipment, using tinting pastes and paints.

You can also do the tinting yourself 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 (possibly even a few days after painting). Therefore, you also need to know how to paint slate correctly!

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

Stage #1 - preparing the slate surface

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

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

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

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

Stage #2 - priming

To impregnate the top layer of slate, use special compounds– primers. They are selected in accordance with the instructions for use of a particular coloring composition. For example, organosilicon paint Ko-slate is combined with silicone primer KO-011S. However, organosilicon paints, as well as “Liquid plastic” compositions and alkyd enamels can be applied without prior priming. Acrylic paints, on the contrary, require the use of a primer. These can be either special compositions (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 to 10% of the volume.

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

Stage #3 - painting itself

Direct painting is done over the dried primer. As a rule, it is enough to apply 2 layers of paint, the first of which will be the base, and the second – the finishing. The base layer is the main one; it must carefully cover the entire surface of the asbestos cement, including the ends, corners, joints, ridge and corner parts. After the first layer has dried, paint it again. The task of the second (finishing) layer is to ensure that the painted slate receives a bright, uniform color, without streaks.

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

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

And this type of sprayer requires highly diluted paint.