Acrylic paint is actively used for painting almost any surface, it is highly wear-resistant, does not contain toxic substances, and dries quickly. In some cases, the paint is varnished to provide reliable protection from various influences, humidity, precipitation or temperature changes. Usually treated with varnish wooden surfaces to protect the material from moisture. Also, with the help of varnish, you can give the surface an unusual decorative effect.

Can acrylic paint be varnished?

Acrylic paint does not need to be varnished, since this agent is already present in it. This material is resistant to high humidity. Covers a painted surface when protection is needed additional view or make it decorative.

The varnish may differ in the method of use, and composition. Furniture varnish is used to cover furniture, it can also be used to treat other wood surfaces. To cover the floor, take parquet look, it is used for doors, furniture, and other items made of wood. varnish decorative type allows you to improve the appearance of the painted surface, and provide reliable protection against external influences, it is used in various directions. The deck of ships is covered with yacht varnish, it can also be used for other works, usually such a tool is used for exterior finish surfaces on outdoors. This tool has a high resistance to moisture.

Varieties of varnish by composition

1. Acrylic-based varnish is safe, does not emit toxic substances, harmful to health. This type of tool is used for internal works, has a transparent appearance, can be applied to the surface of wood without changing its color, dries quickly.
2. Nitro-varnishes are also used for indoor work, they are toxic, so the coating is performed in protective mask. This product dries up quickly.
3. Alkyd types of varnish can be used for external and internal work. They include resins and solvents of organic origin. Such varnishes are water-repellent, can be used for various surfaces, and have for a long time drying.
4. For wood surfaces use polyurethane varnishes universal type, it protects the surface from mechanical actions, that is, from scratches or failures.
5. There are varnishes based on vegetable oil, they take a long time to dry, and may give the wood surface a yellowish or brownish tint.
6. Epoxy varnish is resistant to moisture and mechanical damage, I use it inside and out, it dries in about 12 hours.

What varnish is used for acrylic paint?

Of all types of coating acrylic paint Acrylic based lacquer is ideal. It corresponds to the composition of the paint, and has a transparent appearance. When varnish is applied to a painted surface, the color that was originally set does not change. This type of product is resistant to ultraviolet rays, dries quickly, and does not have a pungent odor, that is, it does not emit substances harmful to health. Main advantage this material is easy to apply.
These are the main advantages of acrylic-based varnish, if acrylic or acrylic paints are coated with this product. water-based type, it is possible to provide reliable protection of the surface from the effects of moisture. The varnish retains the color of the surface for a long time, and gives a beautiful shiny look.

How to prepare the surface?

Before applying varnish, it is necessary to check the surface coating, it must not have peeling, otherwise the work will be of poor quality.
First, the surface must be sanded with sandpaper, and then degreased. After these steps, the area to be painted is primed with a primer using a roller or brush. The liquid is applied in two layers, before applying, you must read the instructions.

After the primer has completely dried, the surface is painted.

1. First, prepare the coloring agent, stir it well. If necessary, add pigment to create desired color. To thoroughly mix the pigment and paint, use a building-type mixer.
2. Then proceed to painting the surface. Apply with a brush thin layer paint, smudges should not form on the surface. Instead of a brush, you can use a roller.
3. When the first application dries, proceed to the second coating.

After that, the surface is considered prepared for varnishing.

Lacquering technology

Lacquer may be applied to the painted surface to provide protection against impact. environment, humidity, and other factors. This allows you to extend the life of the surface, the color is preserved long time.
Varnish can be applied to almost all types of paint, while it must be borne in mind that the compositions must match each other. That is, an acrylic-based varnish is applied to acrylic paint. The coverage will be different. high quality, and durability.

Basic rules for working with varnish

• When purchasing varnish, you need to pay attention to the expiration date, which should not be more than 90 days. This will make the application work easier.
• Acrylic paint gives the surface a shine, as it already includes varnish. Therefore, varnishing acrylic paint is not necessary, but additional protection can be created.
• Before the main work, it is necessary to check that the paint is completely dry. The surface must be free of dust, dirt or other debris. If the surface cleaning work is carried out shortly after applying the paint, do not rub the areas vigorously. Do not use rough materials, such as rags or sponges.
• The varnish cannot be applied to a clean surface, it is treated with a primer, this helps to prevent cracking of the product during operation. Lacquering is performed on a completely dry surface.
• Before use, the varnish is heated to 50 degrees, for this it is placed in a liter of boiling water. The product reaches this temperature within five minutes.
• It is necessary to cover the surface with varnish when good lighting top, and on the right side. Thus, the entire process of performing work is more clearly visible.
• For application, use a flute brush with wide bristles from 50 to 150 millimeters. This allows you to perform the work evenly, and more efficiently.
• When small plot will be varnished, polishing is performed, that is, they are vertically carried out on the surface with a dry flute brush until sticking. When the brush starts to stick, you can continue to cover the rest of the surface.
• While the varnish dries, dust should not fall on its surface. Acrylic varnish dries very quickly. If the place is too dusty, it is covered with a film.
• When working with varnish and paints based on acrylic, there is no need for protective equipment, since the materials are not toxic.
• For applying paints, a brush, roller or spray gun is used, the surface must dry completely, only then varnish is applied.
• When choosing a varnish, it is necessary to take into account its compliance with the paint, that is, for acrylic paint, an acrylic-based product is used, this makes it possible to make the surface of better quality without changing the main color.

Many people wonder if it is possible to apply varnish on acrylic paint? The answer to it is quite simple, acrylic paint does not need to be varnished, as it has glossy surface, but for additional protection, this action is allowed.

Repairing painted surfaces is an inevitable process. Even if the previous finishing was done correctly and quality materials.

Before repainting the walls, you need to make sure that the new and old coating will be compatible.

On this moment There are many ways to remove old paint.

• mechanical methods. Acrylic enamel and acrylic paint or other coating is scraped off with sharp objects or power tools, such as a drill with a nozzle.
• thermal methods. In this case, the paint softens, for example, building hair dryer and then removed.
• Chemical methods. The finish is removed with a variety of washes.

However, the process of removing the old coating is long and labor-intensive. And the price of the issue is quite high, especially if you need to remove paint from a large area or complex surfaces. Because of this, many of us prefer to apply the new finish directly on top of the old one. The question often arises as to the compatibility of the finishes.

In this article we will talk about whether acrylic paint can be applied to enamel and vice versa. But first, let's look at the basic concepts.

Varieties of paints and varnishes

Part paintwork materials are included binder, fillers, pigments, solvents/thinners and additives. In order to correctly apply paintwork materials during repairs, you need to know exactly their composition.

Main Components

Oil paints based on drying oil.

All paints are divided according to the type of binder used and the type of solvent.

1. The binder determines the main qualities of the paint, the service life of the coating and the speed of its drying.. There are 4 types of binders used for paintwork materials: alkyd and epoxy resins, oil (on drying oil), latex, acrylic polymers.
2. Solvent components are divided into actual solvents and diluents.. The former reduce the fluidity and viscosity of the material. Thinners only reduce the viscosity of the paint.
3. To improve the characteristics of paintwork materials, additives are added to their composition.: stabilizers, emulsifiers, fungicides, antiseptics, etc.
4. A separate category includes special paints. These are anti-corrosion coatings, for example, Zinga conductive paint. Analogues with antiseptic properties that protect the base from mold and decay. Compositions for removing small defects (irregularities, scratches, cracks), etc.

Oil and enamel formulations

Pictured is acrylic paint.

Materials based on alkyd and acrylic resins include oil and enamel paints. They are suitable for painting metal, wood and plastered surfaces.

After drying, it is non-toxic, light and moisture resistant.

1. Oil paints are produced on the basis of drying oil. As thinners for them are White Spirit, gasoline, turpentine or solvent naphtha. The price of the compositions is low, but they dry for a long time (up to several days). The main disadvantage is that over time the coating turns yellow.
2. Lacquer is added to enamel compositions as a binder. It gives the coating gloss and aesthetics. The instruction recommends using such paints for external and internal finishing works for metal, wood, concrete, plaster. Enamels are moisture and light resistant. They also have anti-corrosion resistance.

Emulsion and dispersion materials

Water-dispersion composition.

Such paints are diluted, but do not dissolve with water. In them, the binder and pigment particles are distributed in a liquid medium, thus creating a stable emulsion.

When the coating dries, it does not wash out with water.

1. Emulsion compositions are economical, have environmental friendliness and fire safety.
2. They fit well on almost any substrate.
3. Dries quickly, does not have a strong smell.

Many people think that water-based and water-dispersion formulations are the same.

However, they are different.

1. Matte emulsions are washed off over time. The dispersions are water-resistant and suitable for use in wet areas.
2. Water-dispersion compositions are usually white, water-based analogues have a variety of color palettes.
3. Dispersions cannot be used at temperatures below +5 degrees. However, when modifiers are added, they are thermally stable. Such, for example, fire-retardant paints for metal Polistil.

Note!
The best analogues from paints diluted with water - based on acrylic resins and polymers.
They have high elasticity and strength.

1. Such compositions are frost-resistant after their complete drying.
2. Possess vapor permeability.
3. Suitable for alkaline substrates (concrete, plaster).
4. These paints are well tinted.
5. Resistant to ultraviolet, retain the original color for a long time.
6. They have the ability to repel water.
7. They have high mechanical stability.

About paint compatibility

First, an epoxy putty must be applied to the old coating.

Based on everything written above, we will answer the main question of the article - is it possible to paint on enamel with acrylic paint and vice versa.

1. Based on their composition, acrylic coatings fall only on the same old coating. They cannot be applied over alkyd enamels due to thinner/solvent incompatibility. The new coating will simply fold (raise) the enamel.
2. In addition, it is undesirable to apply emulsion and dispersion compositions on old glossy and adhesive paints. The same applies to lacquered bases.
3. But, after emulsion and dispersion materials, any enamels and paints can be used.

Now about how, without removing the enamel, apply a coating of acrylic paint with your own hands.

Note!
To do this, you need to create an intermediate layer, in a stable state, resistant to both acrylic and organic solvents.
It should consist of polyesters, (for example, epoxy resin, polyurethane) on amine hardeners.
Such compounds are dissolved with acetone.

After puttying, acrylic primer is applied.

There are many for sale now liquid putties and primers having the described composition.

One of the best materials is "Inter Troton Spray".

1. First, apply liquid putty over the enamel.
2. Next, cover the surface with acrylic primer.
   
3. Then you can paint the base.

Conclusion

If you are unable to withdraw old paint, then a new coating can be applied to it. However, there are nuances here. Some types of coatings are incompatible, so between them you need to create an intermediate layer of neutral compositions. By watching the video in this article, you will expand your knowledge base.

When it comes to painting the surface in a renovation, the obvious question comes to mind: what paint to choose? Surely the color scheme has already been chosen in accordance with the design, so the essence of the question is what type of paintwork material to choose for application. Popular options are alkyd and acrylic paints. Despite their similar names, they differ significantly in both composition and characteristics. What are alkyd and acrylic paints and what advantages or disadvantages they have - this will be discussed in this text.

What are alkyd and acrylic paints made of, what are the differences

Let's get to the analysis of the composition of these two types of paint. The main component of alkyd formulations is alkyd varnish, which is mixed with different fillers, as well as a solvent. The most commonly used pentaphthalic alkyd varnish, which is a very thick resin, to which rosin, glycerin and vegetable oils are added.

The role of the solvent is most often assigned to purified kerosene or, in a simple way, white spirit. It perfectly copes with the splitting of fractions of fats, oils and various organic compounds therefore excellent for thinning alkyd paints. For fillers of alkyd enamels, marble or granite chips are used because of their high dispersion index.

Coloring pigments are added to this composition, giving the enamel a certain color shade. Quite often, some additional additives are included in the composition that can add functionality to the enamel, for example, an antiseptic to prevent the formation of fungus on a wooden surface.

The basis of acrylic paint is an acrylic polymer emulsion, with which the color pigment is mixed. This emulsion, also known as plexiglass, is the binder. The solvent, unlike alkyd enamels, is water. The composition also uses additives that change the properties of the material, for example, improving viscosity and application to the surface or increasing the drying rate.

Features of the use of alkyd paints

Despite the difference in composition, both types of compositions can be called universal. However, let us turn our attention to the use of alkyd-based paints. They can be used for any type of work - outdoor and indoor, due to their high mechanical properties, saturation and brightness.

These paints are classified into two main groups - directly enamels and oil paints. The latter are considered a separate type of paints and varnishes, but for the most part they contain alkyd resins, so they can be considered a type of alkyd paint.

Alkyd enamels received wide use in construction and decoration, because they are both glossy and matte. There are even semi-gloss compositions. The film formed by glossy enamels is resistant to abrasion and can be applied both to wooden and metal surfaces in order to protect them. Glossy enamel lies more evenly on the surface and gets dirty a little worse than matte ones.

Matte Choice alkyd enamel is based rather on the taste of the buyer, because in terms of operational properties they do not differ from glossy ones. If you do not like the glare from the painted surface, then matte alkyd enamel will suit you better. These surfaces are slightly more prone to dirt, but this is not a problem, because any alkyd paint is resistant to strong detergents and cleans up well.

Comparison by basic properties

Drying paint. The film obtained after applying alkyd enamel dries quickly enough than acrylic film. After a few days, the alkyd film can properly perform its functions - both protective and decorative. For acrylic materials, the period of complete film formation takes a week or even more, and all this time the surface must be protected from mechanical stress.

Durability. Lifetime advantages on the acrylic side. Intense impact external environment leads to the fact that alkyd surfaces have to be renewed after a year. At the same time, if all the rules of preparation and application were followed, then the acrylic coating can last up to 8 years without the need for repainting.

Acrylic materials are more resistant to ultraviolet radiation. Unlike alkyd compounds, they do not fade and generally do not change the properties of the surface film.

Acrylic paints are also more resistant to mechanical stress, which in a way compensates for the longer preparation for the use of such coatings than alkyd enamels.

While acrylic is a more durable and resistant material, alkyd-based formulations have a wider range of colors and shades, and after application, the colors look much more vibrant.

Advantages and disadvantages of paints

Alkyd enamels are distinguished by these advantages:

• More low price and ease of application, which is especially important when choosing a material for large staining areas.
• Alkyd compounds have a large selection of shades, and the paint itself will not lose its color when dried.
• They dry quickly, and the protective characteristics appear within a couple of days.
• Alkyd enamels perfectly protect metal surfaces from rust and corrosion, and the film formed after application protects the surface well from aggressive cleaning agents such as bleach or whiteness.

Alkyd compounds also have the following disadvantages:

• In the long term, they do not have great reliability, the surface will turn yellow and crack over time, so that the paint will have to be renewed annually.
• Alkyd paints contain unsafe chemical components that cause bad smell that appear when dry.

At the same time, acrylic paints have their own competitive advantages.

• Long service life and increased resistance to external stimuli, which will maintain excellent performance properties.
• A good option for indoor use, because there is no odor or harmful substances.
• A good possibility for use even at the highest temperatures of heated surfaces - for example for heating pipes.

Disadvantages of acrylic formulations:

• The cost of such paints will be higher, and the selection of a truly high-quality composition will be more difficult. Acrylic surfaces take longer to acquire their protective characteristics - from several weeks to a month.

Compatibility of alkyd and acrylic materials

Sometimes you can meet the question, is it possible to use acrylic paints for repainting alkyd surfaces? Or vice versa, is it possible to apply alkyd-based compositions over acrylic? There is only one answer - it is not recommended. And there is no difference what kind of surface we are talking about, metal or wood.

The exact composition of any paintwork material cannot be fully known. The application of acrylic enamels over alkyd may result in the fact that the active components of the latter may come through upper layer in the form of dark spots and streaks, thereby spoiling the entire surface. Otherwise, alkyd paint simply may not adhere to the acrylic surface, as a result of which it will gradually peel off the surface.

However, if a significant period of operation of the painted surface has already passed and volatile elements have weathered from its surface, then there is the possibility of applying materials to each other. However, it’s still not worth doing on a “bare” surface; pre-treatment with a primer is required. Important point- The primer must be the same type as the paint you will be reapplying.

Production of alkyd and acrylic compounds

Even though the trend in manufacturing is to produce environmentally friendly clean materials, which are diluted with water, namely acrylic compositions, the main component produced by domestic factories are alkyd binders of paints and varnishes. To be precise, more than 65% of all paint and varnish production occupied by alkyd materials.

It is worth noting that foreign companies are conducting much more active research polymer compounds, which are the basis for acrylic paints, as well as additives to these compounds. New technologies are being developed, the main focus of which is on environmental friendliness. In this regard, acrylic products are more attractive in terms of use. However, the price of such a product is much higher, which ultimately greatly affects the choice of the consumer.

In summary, alkyd-based paints are a very attractive choice - they are inexpensive, bright, dry quickly and have good durability. However, in the long run, acrylic enamels have the advantage of being less toxic and can retain their properties for decades.

Modern market paint and varnish products very diverse. Therefore, it is not so easy to make a choice without knowing technical features certain types of varnish. The task becomes even more complicated when applying several layers of varnish of different grades.

Applying varnish to an already varnished surface

For example, one of the frequently asked questions is: is it possible to apply an acrylic composition on alkyd varnish or vice versa? To answer this or similar questions, you should understand the properties of these paints and varnishes in a little more detail.

Characteristic features of alkyd varnishes

Alkyds are made on the basis of synthetic solvents and alkyd resins. Consumption per layer - from 70 to 75 gr. on square meter. They are used primarily when varnishing furniture or coatings subject to increased wear.

The main advantages and disadvantages of alkyds will be listed below. This is one of the most frequently encountered groups of paints and varnishes on the market. There are a number of reasons for this.

Benefits of alkyds:

1. Competitive cost. This is perhaps the main factor that ensures the popularity of this group of materials. The use of such varnishes is considered economical when processing large areas, which leads to the frequent use of alkyds in construction.
2. Working with alkyds is not difficult, and the set of tools is limited to a roller or brush.
3. Very resistant to moisture and durable.
4. The composition is almost colorless.
5. The compositions are considered universal. You can use such varnishes not only indoors, but also outdoors (although this happens much less often).
6. Aesthetic appearance of the lacquer film.
7. Excellent light and thermal stability.
8. Elasticity.
9. Good adhesive characteristics.

Alkyd (glossy) varnish for interior work

Disadvantages of alkyds:

1. They dry for a long time, although faster than, for example, oil ones. The average drying time is 3 days. To speed up the drying process, product manufacturers add special hardeners to the composition, reducing the time of the above process to a day. There are also alkyd-urethane varnishes, which are distinguished by even faster drying - from 6 to 12 hours. But the main thing is that alkyd-urethane products have a very high wear resistance.
2. Toxicity.
3. During surface treatment, as well as during drying, the varnish layer must be protected from moisture.
4. To obtain acceptable quality, 2-3 layers are required.

Note! It is undesirable to apply alkyd varnish on acrylic varnish or paint. However, in the absence of other options, the surface must be cleaned with fine emery. This will increase the adhesion parameters and avoid peeling of the coating.

The incompatibility of alkyd and acrylic is due to the different composition of the materials. Alkyds are based on polyhydric alcohols and are produced by polycondensation with orthophthalic acid. There are two types of alkyd compounds: pentaphthalic and glyphthalic.

The main characteristics of acrylic varnishes

These formulations are produced in water based. First of all, they are used in interior decoration- Precisely because they are based on water. Main areas of use: furniture, building construction, plastics, steel rolls. Often used in the processing of bedrooms or children's rooms. The composition is applied by sprayer, roller or brush.

Acrylic varnish is different, choose based on the conditions and material of varnish

Acrylic advantages:

1. They are considered the most environmentally friendly type of paint and varnish products, as they do not include organic solvents.
2. Fireproof.
3. No toxicity and no odor.
4. High strength.
5. Elasticity.
6. Transparency, the absence of yellowness in the shade, the ability not to disturb the natural texture and color of the tree (i.e. do not make the wood darker).
7. Gloss can vary from glossy to semi-gloss or semi-gloss.

Disadvantages of acrylic:

1. Although acrylic dries faster than alkyd (within a day), which is convenient when drying several layers, it will take 10 to 14 days to fully form the film.
2. It is believed that such varnishes are undesirable for use in rooms that are characterized by too intense attendance.

Also, as in the case of applying alkyd to acrylic, you should avoid applying acrylic lacquer to alkyd. The fact is that the consequences of such work are difficult to predict. For example, the surface may be rough or bulging. However, if there is no other option, priming will be required. In this case, the top layer will lie much better.

Conclusion

Thus, the combination of both types of varnish - alkyd and acrylic - is not recommended. If there is a choice between the described compositions, then you should focus on specific needs. You can build on the advantages and disadvantages of varnishes, which are listed above. Alkyds are cheaper, but in general, acrylic compounds have a better set of consumer characteristics.

Alkyd and acrylic paints are among the most common types of paint when it comes to serious painting works: wall painting, metal products etc. Perhaps due to the similarity of the name, they are often confused. Do these types of paints really have something in common?

Compound

In fact, the only similarity is that both are paints. Their composition is completely different.

Alkyd type can be called a more modernized version of oil paints. They are characterized by a similar mechanism of hardening and the formation of a surface film (which, by the way, is somewhat stronger, but less elastic). Alkyd paints consist of polyhydric alcohols (for example, glycerin) in combination with orthophthalic acid. Actually, the word "alkyd" comes from a combination of the words "alcohol" (alcohol) and "acid" (acid).

Unlike alkyd paints, acrylic paints are made on the basis of acrylic, a polymer better known as plexiglass. The composition of paints may include various additional components, designed to improve certain properties (add elasticity, speed up drying).

Basic properties

• Life time. In acrylic paint, unlike alkyd, the surface retains its original appearance much longer. It is advisable to renew alkyd paint about once a year, since oxygen and ultraviolet intensely destroy the surface layer of paint. acrylic coating, subject to the technology of surface preparation and paint application, can serve from 8 (wood) to 20 (plaster) years.
• UV resistant. Acrylic practically does not change the properties of the surface film under the influence of sunlight, that is, it does not fade, does not turn yellow and does not acquire a “matte” appearance. Alkyd compounds in this regard are not so reliable.
• Drying process. But the alkyd film dries relatively quickly, and after a couple of days it fully performs its protective and decorative functions. Acrylic film finishes its formation in about a month after application to the surface. In this case, the coating should be protected from mechanical influences until it is completely dry.
• Mechanical stability. The longer process of acrylic film formation is compensated by more high level resistance to mechanical influences (deformations, scratches).
• decorative properties.

  8. Can acrylic paint be applied to alkyd and vice versa?

  Alkyd compositions are distinguished by a more diverse range of shades and halftones, as well as, in general, more bright colors. On the other hand, acrylic paint lasts longer and does not require regular renewal.

Are acrylic and alkyd paints compatible?

Can alkyd compounds be applied to acrylic or vice versa? Neither is recommended, especially if the painting of the base is relatively recent or we are talking about the metal surface. The fact is that the specific composition of the paints may not be completely clear to us. Alkyd compounds may contain components that will show through the layer of acrylic paint as dark spots. If alkyd paint is applied over acrylic, then it may not be fixed on it, that is, it may peel off.

The only option for applying such paints to each other: applying to the old coating, from which all volatile components have already disappeared. However, even in this case, the top coat of paint should be applied only after the surface has been treated with a primer of the same type (i.e. acrylic paint on acrylic primer and vice versa).

Acrylic and oil paints are used to finish surfaces from the outside, as well as inside. In some cases, it is necessary to cover with acrylic a surface that has been painted with oil paint. To find out if one paint can be coated with another, it is necessary to consider the properties of each material.

Oil paint

Some time ago, oil paints were actively used to finish surfaces from the inside and outside. But they were replaced by a new, more versatile material, acrylic paints.
The oil material is made on the basis of drying oil or a similar agent, which is mixed with pigments. mineral type. The paint is obtained by grinding all the components to a homogeneous composition. In modern repair, oil paint is used very rarely. But in some cases it is advisable to use it as an economy for painting large rooms, since its cost is lower than other materials. The main advantage of oil-based paints is their low cost. Such materials are resistant to moisture, oils provide reliable protection to wood, and concrete materials. Oil-based paints also prevent rust on metal surfaces.
Such material has its drawbacks, which is why it is not very convenient to work with paint. There are not too many flowers, almost a dozen, so it is difficult to complete certain design, and give originality to the surface.
Also, the paint needs to be updated annually, that is, it wears out quickly, it takes additional expenses. If the surface is not updated in a timely manner, the material may peel off in large pieces. Appears during application strong smell Therefore, work is carried out in a well-ventilated area. When dry, the surface releases toxic elements, so it's best not to spend time in a painted room. The negative quality is the long drying time of such material, almost two days.
On oil surface you can apply acrylic paint, it will not be any difficulty.

Acrylic type paints

Compared to oil formulations, acrylic paints have clear benefits. Acrylic compositions are environmentally friendly, do not emit toxic substances, since they do not contain solvents of organic origin.
The basis of this material is water, due to this, when applied, there is practically no smell. Also, the material is distinguished by a large number of colors and shades, this allows you to make the surface original. The desired color can be ordered from hardware store and it will be done on the spot. The acrylic composition has high resistance to humidity, ultraviolet rays, and temperature changes, and also has good vapor permeability. Thus, acrylic paint is used for interior and exterior decoration. The painted surface dries quickly, in just a couple of hours. If we compare paints based on oil and acrylic, then the latter are considered more durable and resistant to wear. Such compositions are considered universal, and are used to create a different interior.

Can you paint with acrylic paint over oil paint?

Usually, experts do not recommend applying acrylic paint to an oil coating that is too old, as the materials do not adhere well to each other. But such work is allowed provided that the surface is thoroughly prepared. Work on surface preparation begins with grinding the previous coating, for this, sandpaper with fine grit is used.
After grinding, the surface is thoroughly cleaned of dirt, and the dust that has formed as a result of work, for this you can use a vacuum cleaner. Then the surface is degreased and left to dry. The dry surface is covered with 2 layers of acrylic-based mortar. But careful preparatory work do not talk about the quality application of acrylic paint on an oily surface. To get the result, it is necessary to use a thick acrylic composition, when diluted with water, the proportions should not exceed 1 to 1.
If a spray gun is used as the application tool, a suitable thinner must be added. The gloss or dullness of the surface depends on the type of this substance. Sometimes oil paint is very etched into the surface, especially if it is used for too long, then it cannot be removed. At the same time, special paints are used, which are distinguished by high adhesion, they are able to qualitatively paint even too oily surfaces.

The technology of applying acrylic paint by oil composition

1. First, the surface is polished, all dust is removed, for this a vacuum cleaner is used.
2. Then the primer is applied. And leave it to dry completely.
3. The acrylic composition is applied with a brush or spray gun, in the latter case, special thinners are used.
4. Begin to apply paint from the corners of the surface to the middle or from top to bottom. After fully covering the walls or ceiling, leave time to dry, usually a couple of hours, there are paints that dry faster.

Basic rules for applying acrylic paint to an oil composition

1. To ensure a quality painted surface, it must be well prepared. The main oil layer of the paint is removed by grinding, and then the dust is removed.
2. All contaminants must be cleaned so that the acrylic composition lays down in an even layer.

   The difference between alkyd paint and acrylic

3. In too advanced cases. If the oil has eaten into a wooden or other surface, use special paints with high rate adhesion.
4. Surface grinding can be done sandpaper with fine grain or special grinder. In some cases, a drill is used and special nozzle must be done carefully so as not to damage the surface.
5. A mandatory action is degreasing, otherwise the new composition will not fit well on the old surface.
6. To ensure high-quality adhesion of the paint to the previous surface, the acrylic composition must have a thick consistency.

When choosing a paint composition, it is necessary to study its properties, all positive and negative qualities, since the service life of the coating and its reliability depend on it. Before purchasing the material, it is necessary to consider what kind of coloring will be produced, primary or secondary. In the second option, the surface is covered, which has already been previously treated with other compositions.

It is especially taken into account when the walls are painted with oil paint, these are the consequences of old repairs. Usually oil paint used for kitchens or bathrooms. When choosing a modern acrylic-based paint, you need to figure out what to do with previous finish, namely the oil composition. This article describes all the advantages and disadvantages of oil and acrylic paints.

Usually cover oil paint acrylic composition do not recommend, but it is possible if you resort to careful surface preparation. The former material is partially scraped off by grinding with sandpaper, primed, and covered with acrylic paint.

Alkyd primer and acrylic paint

The primer is applied to the surface before it is painted in order to protect the surface and improve the adhesion of the paint to be applied over the primer. The deeper the soil penetrates into the treated surface, the better later paint will adhere to it. A primer for metal, for example, is a prerequisite for high-quality painting of metal surfaces.

When applied, the primer fills the pores of the surface and binds small particles foreign inclusions(for example, dust), thereby preparing it for the application of paint or other paints and varnishes.

What is the difference between alkyd paint and acrylic paint

Any soil, whether acrylic primer under wallpaper or primer composition for metal, can significantly reduce the consumption of expensive materials. Savings are especially noticeable when priming large areas.

Another advantage of using a primer is that the primer slows down the penetration of substances from the composition of the next layer, which helps to evenly dry the surface to be painted. Uniform drying, in turn, improves the quality of painting, eliminating cracks and warpage on the treated surface.

Currently, compositions of this type, whether it is a water-dispersion primer or a primer deep penetration, are indispensable materials for internal or external repairs of residential buildings and industrial premises. There are many types of primer coatings (acrylic primer for wood, alkyd primers, reinforcing and bonding compounds, metal primers) designed for different types surfaces and materials of subsequent layers.

Substances that make up the primer coat must not react with substances from paints and varnishes that will be applied over the primer. Therefore, before proceeding with the repair, it is necessary to find out what type of primer is suitable for a particular paint and surface. So, for example, a deep-penetrating universal acrylic primer fits perfectly on plaster, brick or concrete. Putty, plaster and other finishing materials will subsequently perfectly fall on compositions of this type.

Priming compositions will also come in handy if it is necessary to process a loose, crumbling surface. For repair work with such surfaces, deep penetrating compounds have been developed that can thicken the surface and prepare it for painting or finishing. The cost of a deep penetration primer is quite high, but for quality repair it is sometimes indispensable.

If you are going to carry out repairs in a room with high humidity, then pay attention to such material as the universal acrylic primer Bulls Eye 1-2-3 Primer Sealer Stain-Killer. The composition of this coating includes antiseptics that prevent the spread of mold and fungi. This acrylic primer is perfect for surface treatment of various materials- concrete, brick, drywall, chipboard, wood, metal and many others.