Painting pf enamel on acrylic paint. Can you paint with acrylic paint over oil paint? What is acrylic paint

Acrylic and oil paints are used to paint both the exterior and interior of the building. Often there are situations when you need to paint with acrylic a surface on which there is a layer of old oil paint. Is it possible to combine these two completely different colors? To answer this question, it is necessary to understand in more detail the properties of both types of paint and varnish compositions.

Features of oil and acrylic paints

Oil base

Some 20-30 years ago, oil enamels completely dominated the market. Such solutions were used both for painting facades and indoors. The first serious competitor to oil was nitroenamel, and finally the dominance of oil formulations was shaken after the start of mass production of paints on water based primarily acrylic.

Oil paints and varnishes are produced on the basis of natural drying oil or its synthetic counterpart mixed with mineral pigments. To obtain paint, its components are ground until a homogeneous mixture is formed.

To date, oil-based paints and varnishes are used infrequently, but sometimes there is still a need for them, for the following reasons:

Affordability allows you to paint large areas with oil paints at the lowest cost. Low cost is the main factor in the popularity of the oil: as long as prices are low, the demand for such solutions will exist.
Resistance to negative impact moisture. The oil protects wood, concrete and metal surfaces from the penetration of moisture into their structure.
Often oil paint is chosen because the surface has already been painted with drying oil. Not all home craftsmen are aware of the possibility of applying an acrylic composition to such a surface, and therefore they choose the simplest option - they buy an oil solution.
The application of this paint and varnish material does not require any special knowledge and skills: you just need to dilute the composition with a solvent and stir.

Oil solutions also have serious disadvantages that limit their use:

Not too much big choice colors. Most often in the assortment of stores there are up to 10-12 shades.
Not high strength coatings. For this reason, the painted surface needs to be updated regularly (at least annually), which will require additional financial investments and labor costs.
solution toxicity. This category of paints is characterized by a specific and very stable smell. If painting is carried out inside the building, you will need to organize high-quality ventilation. At the same time, during the drying period of the paint, you should avoid being indoors so as not to get.
Long terms drying. It will take at least 24-48 hours for the treated coating to dry completely. And this is at ideal conditions environment(corresponding levels of humidity and temperature, as well as the presence of ventilation).

acrylic base

Compositions based on acrylates are characterized by the following advantages:

Compared to oil paints, acrylic paints are much more environmentally friendly because they do not contain organic solvents. Since acrylic solutions are based on water, such paints are devoid of a pungent odor.
Huge selection of colors and subtle shades. It is possible to order the desired color directly in the store: the composition will be made in a special machine right in front of the buyer.
Resistance to moisture, ultraviolet radiation, temperature extremes, vapor impermeability. As a result, acrylic can be used both indoors and for painting the facade.
High surface strength. The coating becomes harder as it dries (water evaporates).
Fast drying time - just a few hours. Moreover, some compositions can dry in just an hour.
Long service life of the coating. Compared to oil paint, acrylic paint is at least twice as durable.

The only significant drawback of acrylic is its cost. However, the quality is worth paying for.

Applying acrylic paint to oil

Apply acrylic composition on old oil paint is not recommended, because in this case good adhesion of materials cannot be expected. It is much preferable if acrylic is used as the bottom layer, and an oil solution is applied on top.

However, if desired, you can still treat the old oil layer with acrylic. However, in this case, you need to thoroughly prepare the surface.

The preparatory work is as follows:

We grind the surface with a layer of old paint. For grinding, we need fine-grained sandpaper.
We remove dirt and dust from the processed material, and then degrease the surface.
We are waiting for the surface to dry.
We apply 2-3 layers of acrylic solution.

However, preparatory work alone does not guarantee the successful application of acrylic on an oil base. To achieve the desired result, the acrylic composition must be quite thick, that is, diluted with water in a proportion not exceeding 1 to 1.

Note! If staining is carried out using a spray gun, you will need a special thinner. Depending on the type of thinner, the finished surface will acquire a matte or glossy finish.

Sometimes the oil composition is so firmly eaten into the surface that it is not possible to remove it. In such cases, paints with specially enhanced adhesive qualities, for example, Master-121, will help. Such paints are able to adhere even to moderately greasy surfaces.

Very often in construction and finishing, artwork acrylic paints are used. Such coatings are very popular. This is due to their unusual color brightness and durability. Many people wonder what can be painted. The technology and application of coloring acrylic is worth studying. Well, we invite you to get acquainted with how to properly paint walls, facades, wood and metal products, fabrics and even nail plates with acrylic paints.

What is acrylic paint?

Acrylic-based paints are a substance based on polyacrylic polymers: methyl, ethyl and butyl. Also, some polymers are used to turn them into a foamy form. It is dispersed, diluted with water and formed with pigment pastes. Also, for their splitting, a solvent is used, consisting of chloroform, ethanol and ether. They give off a very strong smell.

Acrylic itself is a synthetic material with a transparent texture. It has good mechanical characteristics and resistance to high temperatures. Acrylic substances are very light and durable, resistant to UV radiation. The composition of the paint includes acrylic itself, small dispersion particles of plastic that tend to dissolve in water. After the paint dries, a film is formed that protects the painted surface from external influences. Here is the composition of any acrylic coating:

binder;
toner;
filler;
solvent;
additional particles.

First binder combines all the ingredients. This allows the coating to be well combined with different surfaces. Acrylic resins often act as such a binder. They give the paint strength, durability, resistance to abrasion. The type of acrylic resin determines the quality of the paint.

A soluble powder is used as a pigment. It can be of the following types:

with organic origin;
with inorganic origin;
made artificially;
from a natural source.

The process of making paints with an acrylic base is not that complicated. First, an acrylic composition and a coloring pigment are installed in a container, then all components are mixed into a homogeneous mass and packaged in a separate bowl.

Advantages of acrylic paint

Acrylic paints have a lot of advantages over other paints and varnishes. Most of all they are suitable for finishing work. They are versatile and suitable for any surface. And here are their other advantages:

Environmentally friendly. For their manufacture, substances that are harmless to humans and do not affect health are used.
Comfortable and easy to work. They do not have a special smell, so they are easy to work with.
Fireproof. Do not ignite, do not contain flammable substances in their composition.
Availability of unlimited color palette. A huge number of shades allows you to use it not only in coloring various designs but also used by artists to paint pictures.
Dry quickly. After 1-3 hours after painting, it dries.
Elastic, durable, easy to care for, resistant to abrasion.
They do not contribute to the accumulation of dirt, allow air to pass through, and are resistant to moisture.
They differ in the duration of operation (they do not lose their attractiveness for 10 years).
They have a wide scope. They are used in rooms, as well as outdoors under open sunlight.
Versatile and multifaceted. Used in combination with other building materials. They can be applied to any surface, excluding some types of plastic.

What can and how to paint

So, this species paints are used both in the construction industry and in painting. Sometimes they put drawings on the surface of cars or make nail designs. If you still do not know how to paint with acrylic paint, then use the following tips:

clean the surface from dust, dirt and greasy streaks;
material with high moisture absorption must be treated with a primer;
if the composition is too thick, add water and solvent;
apply better with a roller, brush or spray gun;
work should be carried out at a temperature not lower than +10 °С;
brushes paint container, paint container and other accessories clean with plain water.

If you have not completely used up all the paint, then close the jar tightly with a lid so that air does not get in there, which can change its properties and make it unusable.

Varieties of acrylic coatings

Depending on where acrylic paint is used, it is divided into the following types:

outdoor;
internal;
automotive;
used in painting.

The facade acrylic coating contains substances and additives that improve its resistance to sunlight, moisture and abrasion. This paint can cover facades, fences, benches, gates and other outdoor surfaces.

Internal paints have less resistance to external irritants, but they are perfectly exploited. Finishing interior paints available separately for walls and ceilings. Universal compositions with acrylic have also been developed, suitable for both indoor and outdoor work.

Depending on the additional features paints with acrylic are found:

lightfast;
moisture resistant;
well tolerated by mechanical stress;
washable.

Similar coatings with acrylic can still shine beautifully. In this regard, the following colors are distinguished:

glossy;
matte;
silky matte;
semi-gloss.

A little about thinners

It is best to dilute acrylic paint with water, because it is water-based. But when the coating dries, a film forms on its surface, which no longer allows water to pass through. Therefore, all working tools after painting should be washed immediately before they dry out.

How much water is needed to dilute? Ideal mass the ratio will be 1:1. If you dilute 1: 2, you get the thinnest layer that impregnates the surface. The thinner the layer of staining is needed, the more water added to composition.

Some manufacturers offer their thinners directly. With them, the paint can already take on a glossy or matte look.

To dilute it, it is first crushed to a powder state. Next, this powdered mass is poured twice with hot boiling water, waited for cooling and the water is drained, and the paint is mixed. Such a processed mass is already suitable for second-rate work, because it loses some of its properties.

Acrylic paints in painting

All artists know one feature of acrylic paints - after drying, they darken. They are used as an alternative to oil tubes and use the same techniques for applying to canvas. Unlike oil, acrylic dries much faster.

For background images, masters use a liquid consistency diluted with water, and for expressiveness they use a pasty mass. To do this, they often use special thickeners. Acrylic is good because it does not crack, unlike oil. It lays down very evenly, has a shine and does not require fixatives and varnishing.

Artists paint with acrylic paints on wood, glass, metal, linen, canvas. Fresh smears can be easily removed with water, and dried ones - only with special solvents. To create acrylic paintings, gels, pastes, putties, glue are used. Such masterpieces are distinguished by a special color rendition.

How to paint with acrylic paint correctly?

Applying water-based coatings is very easy. To know how to paint with acrylic paint, you need to get acquainted with some technological points and subtleties. We invite you to get to know them:

First, prepare the surface for painting. Check the ceiling for dirty, greasy and dusty residues. Then level the base perfectly. Treat the ceiling with a primer that protects against mold and mildew and saves paint costs.
If old paint remains on the surface, then carefully remove it with a spatula.
Be sure to seal cracks and chips with putty and wait for drying.
Make a grout, apply a primer.
After that, you can start coloring.
Take care of the tools first. What kind of roller to paint with acrylic paint is of interest to many readers. In addition to this device, you will need brushes, a reservoir for paints, stairs or a table.
Work should start from the corners, painting them with a brush. When you paint over all the edges around the perimeter, take the roller and boldly, stroke by stroke, paint over the entire surface.

Methods for applying the coloring mass to the surface

Acrylic paints can be applied to the surface in two ways. The first is to dilute the coatings with water or special mixtures. Such a composition can be applied in several layers. In the second case, a pasty form of paint is used, which is achieved with a special thickener. Never dilute the paint in the container in which you bought it, take a separate container, otherwise the moisture will evaporate and the residue will become unusable over time.

Painting wood with acrylic

Quite often, people ask themselves the question: "Is it possible to paint a tree with acrylic paint?" Yes it really exists special kind acrylic coatings for wooden surfaces. the latter require preliminary priming. For external work, a water-based primer is suitable, and for internal work, an oil-based primer. Quality primer- this and good antiseptic. The answer to the above question is unequivocal: "You can paint wood with acrylic paint." Many people paint a beam or a wooden facade with it.

Facade finishing

Painting the facade of the house with acrylic paint is not so difficult. You just need to do the following:

Make sure that there is no dirt or loose plaster on the walls. Check the surface of the facade for strength. Look for fungus anywhere on the surface. Putty all cracks and defects.
Apply primer. This will improve the adhesion of paint to the surface of the facade and save material.
Take a roller and start painting. You will also need a brush. In some cases, a spray gun is used.

It is important to note that painting the facade requires the application of two layers. The second layer should be painted only after the first has dried. Acrylic paint dries quickly, so stroke after stroke must be applied quickly, otherwise the boundaries of new joints may be visible.

Combination of acrylic and oil texture

It is necessary to apply the varnishing material, having thought through all the details. The coating must be reliable and have a long service life. original view. It is especially important to consider what kind of painting the surface has been exposed to before. What can be painted with acrylic paint, you already understand. It adheres well to many surfaces. But what if the room was previously renovated by others coloring material? For example, can you paint with acrylic paint over oil paint or not? After all, so often in the old "Khrushchev" of the last century, the panels of kitchens and bathrooms were painted with an oil coating.

So do you need to remove oil paint before applying acrylic or not? Experts answer that it is possible to combine these two paints, only you need to use a special acrylic coating "Master-121". He has excellent adhesion, it is considered universal. It is important that there are no cracks or chips on the old coating. First, the oil cover is sanded with fine sandpaper, wiped from dust, degreased, and only then they start painting.

Hot batteries and acrylic coating

During repairs in apartments, many are wondering if it is possible to paint batteries with acrylic paint or not? After all, such a coloring agent should endure high temperatures up to 90-100 °С. It should not only look aesthetically pleasing, but also protect the metal from corrosion.

We can say that universal acrylic paint is also suitable for painting batteries. It is important that the heating is turned off during painting work. Do not paint on hot batteries to avoid uneven layers and loss of color.

combination with enamel

In addition to oil and acrylic coatings, enamel compositions are also found. They paint metal, wood and plastered surfaces. If drying oil is added to the oil, then varnish is added to the enamel. With it, the coating becomes glossy and aesthetic. If we consider whether it is possible to paint, then the answer is categorical: "No!". Acrylic coating will simply lift the enamel, fold it. All this is because these two products have different diluents or solvents. If, nevertheless, such an action must be performed, then first on enamel surface you need to apply a layer of neutral composition.

Alkyd and acrylic paints are among the most common types of paint when it comes to serious painting works: painting walls, 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 last from 8 (wood) to 20 (plaster) years.
UV resistant. Acrylic practically does not change the properties of the surface film under the influence of sun rays, that is, it does not fade, does not turn yellow and does not take on a “matte” look. 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. Alkyd compositions are distinguished by a more diverse range of shades and halftones, as well as generally brighter 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 base has been painted relatively recently or if it is a 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, apply upper layer paint should only be applied after surface treatment with a primer of the same type (i.e. acrylic paint on acrylic primer and vice versa).

There are several types of acrylic paints:
a) water-based acrylic paints (interior or facade paints);
b) two-component acrylic enamels (car acrylic paints in a jar).
They contain two components: paint and hardener, polymerize due to chemical reaction with a hardener, and this reaction is irreversible.
c) one-component acrylic enamels (used in aerosols). Dry in air by evaporation of solvents.

Acrylic two-component paints cannot be applied to alkyd and acrylic one-component paints, as they behave aggressively towards the latter. It is possible to apply alkyd and one-component acrylic paints to two-component paints, since the polymerization reaction is irreversible and the coating is resistant.

Aerosol paints use a one-component base.

All aerosols dry in air due to the evaporation of solvents. Therefore, to combine the application of one on the other acrylic and alkyd spray paints possibly. But you need to apply the paint application no later than 30 minutes after applying the last coat of paint (acrylic or alkyd).

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

Also, important role solvent plays. If the solvent is aggressive, then it can dissolve the alkyd paint. Usually more aggressive solvents are found in acrylic one-component paints. Therefore, in the case of applying an acrylic one-component paint to an alkyd paint, care must be taken to first ensure that the coating is not adversely affected.

In the case of applying alkyd one-component paint on acrylic, subject to temporary recommendations (no later than 30 minutes after applying the last coat of paint), there is no reason to be afraid, since solvents in alkyd one-component paints are less aggressive.

Repairing painted surfaces is an inevitable process. Even under the condition that earlier finishing was done competently and with high-quality materials.

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

At the 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. Yes, and the price of the issue is quite high, especially if you need to remove paint from large area or complex surfaces. Based on this, many of us prefer to apply new finish directly on the old one. In this case, the question of the compatibility of coatings often arises.

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 includes 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.

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.
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.
To improve the characteristics of paintwork materials, additives are added to their composition.: stabilizers, emulsifiers, fungicides, antiseptics, etc.
A separate category includes special paints. These are anti-corrosion coatings, for example, Zinga conductive paint. Analogs with antiseptic properties protecting the base from mold and decay. Compositions for removing small defects (irregularities, scratches, cracks), etc.

Oil and enamel formulations

Pictured is acrylic paint.

To 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.

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.
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 work on metal, wood, concrete, and plaster.
Differences between alkyd and acrylic paints

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.

Emulsion compositions are economical, have environmental friendliness and fire safety.
They fit well on almost any substrate.
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.

Matte emulsions are washed off over time. The dispersions are water-resistant and suitable for use in wet areas.
Water-dispersion compositions are usually white, water-based analogues have a variety of color palettes.
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.

Such compositions are frost-resistant after their complete drying.
Possess vapor permeability.
Suitable for alkaline substrates (concrete, plaster).
These paints are well tinted.
Resistant to ultraviolet, retain the original color for a long time.
They have the ability to repel water.
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 main question articles - is it possible to paint on enamel with acrylic paint and vice versa.

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.
In addition, it is undesirable to apply emulsion and dispersion compositions on old glossy and adhesive paints. The same applies to lacquered bases.
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.

Now many liquid putties and primers are sold that have the described composition.

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

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

Conclusion

If you are not able to remove the 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.

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Alkyd or acrylic primer: which one to choose?

Surface preparation before finishing with any materials is extremely important. Priming helps save your money, significantly improve the quality of repairs and extend their service life. How to choose the right Construction Materials and do the work?

The primer is used for all types of bases: metal, wood, concrete, brick, plaster, drywall, putty. Its main purpose is to provide a strong "seizure" finishing materials, be it wallpaper, paint, varnish or tile, with a base. Paint and varnish technologies do not stand still, now you can find a primer that will protect wood from decay and the formation of fungus, metal from corrosion, plaster or putty to give special strength due to deep penetration or even color.

The choice of primer should be based on the type of substrate and the properties you want to give it. Presented on store shelves today a large assortment acrylic and alkyd materials.

What is the difference between alkyd paint and acrylic paint

The former are used for almost any reason. Their main advantage is that they are odorless. When repairing in small spaces acrylic primer is indispensable. However, if you need to work on metal, then only alkyd material will help here. It reliably protects iron from rust. Experienced Builders prefer alkyd primers to acrylic primers for outdoor use.

The most common among alkyd primers is GF-021. Its anti-corrosion properties can significantly extend the service life of metal products. In addition, the primer is often and successfully used for other types of substrates, such as wood, drywall, brick, plaster. Specifications, which are indicated by manufacturers on the labels, give the right to call the primer GF-021 universal. In particular, the bank trademark"Yaroslavl flavor" is the term. If you are in doubt about which primer to buy, then you can safely choose the primer GF-021. Specifications, including consumption per 1 m2 and drying time, vary in all product lines. Before buying, be sure to read the instructions for use.

Traditional colors for alkyd primers are brown, red-brown and gray. The palette of this material does not always play great importance, since most often it is applied under finishing materials. Absorbing and drying, the primer becomes dull, but it can affect the color of the future coating. If you choose a primer for light wallpaper, then alkyd will not work for you.

Among acrylic materials primers stand out deep penetration. They are designed to strengthen loose and fragile foundations. Among them may be concrete, plastered, wood, cement, gypsum, plasterboard, previously painted surfaces. This type of primer penetrates as deep as possible into the substrate and reduces its absorption capacity, allowing significant savings on subsequent painting work. You will find such soil in the Yaroslavl Color and Norma lines.

The Braska line also includes a deep penetration primer, but it has additional valuable properties for repairs. It contains a fungicide - Chemical substance to fight fungal diseases. The primer is ideal for woodworking, protecting the substrate from the formation of mold and harmful bacteria.

Acrylic primers, unlike alkyd ones, are colorless, some of them are used as an independent coating. This is your option if you are looking for primer for light wallpaper. This type of primer can be used both indoors and outdoors.

You can not worry about the quality of the coating formed by the primer if you choose it taking into account the existing base and finishing materials. In this case, the soil will responsibly fulfill all the duties assigned to it.

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Alkyd primer is an excellent analogue of imported primer. It can be used in cases where the treated surface does not need to be pre-impregnated.

Advantages of alkyd primer.

- high soil strength;

- resistant to abrasion after drying;

— reliably closes resinous knots. They are not visible even after several years;

- any paints (acrylic, alkyd, enamel, latex and nitro paint), glue (wallpaper, universal, PVA) and putties (acrylate and acrylic) lie flat on it;

- in addition to the metal surface, the alkyd primer is suitable for priming wood, plastic, plaster, laminated surfaces, chipboard, fiberboard, concrete, as well as surfaces previously painted with any paints;

- can be used with negative temperature;

— low-toxic chemical composition. You can work without the use of special protective equipment, it is enough that the room is simply well ventilated;

- dilute the alkyd primer or clean the surface from it with white spirit. Inexpensive and readily available chemicals.

Disadvantages of alkyd primer.

- a long drying period;

- if the alkyd primer is not completely dry, some paints may curl upon contact with it;

- only the upper part of the surface is processed. That is, the alkyd primer does not penetrate deep into the material and cannot be used as a fixative for crumbling and loose materials. For them it is necessary to use acrylic primers;

- construction bandage made of synthetic material, which is not completely adhered to the surface, must not be moistened with an alkyd primer. Because the bandage will bubble and stretch;

- despite the fact that white spirit is not a highly toxic substance, it is still quite harmful.

Can alkyd paint be applied over acrylic primer?

Therefore, until the alkyd primer is completely dry, the room must be well ventilated;

- the tools used for priming (brush or roller) must be stored wrapped in a rag moistened with white spirit. To exclude air access, they are additionally wrapped in polyethylene. In this way, instruments can be stored for a week. Then they can be cleaned only with special means.

Every second family in our country is constantly repairing their homes. Repair moves from the bathroom to the kitchen, from the kitchen to the balcony, then - in all rooms and again in a circle. Repair is delayed due to lack of funds for materials for the entire apartment / house at once and for hiring a professional repair team. So Finishing work often done by hand, and the question is whether it is possible to paint water-based paint oil, is set by almost every family leading a "repair" lifestyle.

For specialists, this question is not worth it. professional finisher will clearly answer that all the old oil coating must be completely removed, will do it, re-prepare the surface for painting and perfectly apply a new paint and varnish composition. But ... at the same time, he will ask for a tidy sum for the work. Homeowners, in search of more affordable and less labor-intensive options, puzzle themselves and puzzle manufacturers of paint and varnish products.

So is it possible to apply an aqueous emulsion to oil paint, and which one is better? And, nevertheless, the answer is: you can also use a water emulsion, but with certain conditions. First of all, it is worth considering the issue of the intensity of operation of the place that is to be painted with a water-based emulsion over oil paint, and then answer the question - can it be painted or not. If this is the ceiling or the upper part of the wall in the living room, then you can, without hesitation, choose desired color and after a little pre-training paint with enamel.

If you plan to paint a cramped hallway with protruding corners with water-based paint over oil, then this idea will seem promising at first, but after a couple of weeks of operation it will become clear that this was a bad idea. Even with very high-quality preparation and compliance with all application rules, with frequent intense friction, water-based paint will quickly be erased from a smooth oil coating.

Condition 1. It is allowed to paint with water-based paint over previously applied oil paint, if the place of painting will not be subjected to intensive use.

Is there a faster way?

Yes, this homeopathic principle applies to the preparation of a colored oil base. Its essence lies in covering the old oil layer with a fresh layer of drying oil. For good adhesion of drying oil to paint, the old coating is thoroughly washed and degreased with any suitable composition, the simplest is warm water with soap. Drying oil is applied thin layer on the old cleaned coating, forming a rough, slightly sticky surface, well “accepting” any subsequent staining. It doesn't matter what paint the surface will be painted with later.

Drying oil treatment is more expensive in economic terms than simple priming, and less comfortable due to the stable strong odor, the duration of drying, but in the end gives a quality result.

Summing up, there are three ways to prepare a base painted with oil paint for subsequent coating with water-based paint:

priming (ordinary construction acrylic primer or special for old paint);
sanding/sanding followed by thorough dusting and priming;
applying a layer of drying oil on a previously cleaned surface.

Condition 2. It is possible to paint with water-based paint over oil if the preparation of the base is carried out in a quality manner.

Surface preparation

Carefully inspect the oil coating to be repainted. As a rule, this is the coloring of the late 80s or much earlier. In the 1990s, it was already widely used water-based coloring. With the help of a water-based emulsion, almost all surfaces were painted.

The surfaces painted with oil paint of those ancient years are distinguished by enviable durability, it is not so easy to “tear off” such a coating from a wall or other surface, if only together with plaster. Even "lethal" chemical solvents, at times, are powerless in the fight. With water emulsion, everything is much simpler. Here, primer manufacturers came to the rescue of homegrown finishers.

Coating oil paint with the simplest acrylic primer will create a slight roughness on a smooth surface, allowing the coloring water-soluble composition to “catch” on a slippery surface.

Better surface preparation can be obtained by pre-sanding with fine emery cloth. For this "procedure" it is better to use a grinder with grinding disc or a drill with a special nozzle.

Qualitatively grind large area is unlikely to be done manually. A big plus of this method is that at the same time unevenness, roughness and smudges of the old oil coating are removed. Minus - long and dusty. Sanding won't get rid of additional work on thorough cleaning and priming, but will significantly improve the adhesion of priming and coloring water-based compositions to old oil paint.

On the video: preparing the walls for painting.

How to paint

Painting a well-prepared surface is not difficult. It is carried out with brushes or a roller in two layers. It is important to observe the direction of movement of the brush relative to the incident light, so as not to leave dye streaks, and the paint lies evenly. The paint should be slightly thicker, especially if sanding has not been done, because the absorbency of the surface is still low. At liquid paint three layers are applied.

Also, three layers cannot be avoided if the surface was previously painted in dark color, and it needs to be made light. Better pick up qualitative composition with good covering properties.

Condition 3. Applying a good water-based paint of a slightly thicker consistency in several layers will help to hide the old layer of oil paint.

To cover an old oil finish with acrylic paint or enamel, you will need to follow the same conditions, but you will need fewer final layers. Is it possible to paint with acrylic paint over oil paint at all and will it lie on the previously painted composition? This should not be done, since in this case good adhesion of materials cannot be expected.

And finally, little secret: lightly sand the dried surface painted with water-based paint with fine sandpaper, you will get a perfectly smooth flawless matte finish. And no one, even the most “cunning” master builder-finisher, would guess that under it there was a thick layer of crumpled gray-brown “Sovdepovskaya” paint.

How to prepare walls for painting (1 video)

The choice of one or another type of paint should be approached as responsibly as possible, since the durability of the coating, its aesthetic characteristics, as well as the possibility of providing conditions for a comfortable stay of a person in the room depend on the solution of this issue. When choosing a coloring composition, one should also consider whether this painting will be the first or whether it will be a repair of a previously painted surface.
Many property owners who decide to make the premises of their apartments or houses redecorating interested in answering the question: "Can you paint with acrylic paint on surfaces that were previously painted with oil paint?"
It should be noted right away that trying to find the answer to the question posed among the sellers of building materials stores or specialists who have worked their entire labor activity with only one of the specified compositions, it should not. Most of these people may not even know what initial components these paintwork materials are made of, so they cannot conclude that they are compatible. After receiving a response from them, House master runs the risk of hearing a purely individual opinion and, as a result, making the wrong choice.

Characteristic features of oil and acrylic paint

Before answering the question posed in the title of the article, it is necessary to talk in detail about the characteristics of each of these paints and varnishes.

Oil paint

Even in the most last years of the previous century, oil paints occupied a leading position in the paint and varnish market. These coloring compositions were in demand everywhere, they were applied to any, both internal and external surfaces of premises for any economic purpose. The positions of oil paints were somewhat shaken after the appearance of nitro enamels on the shelves of stores. And after the widespread production of water-dispersion coloring compositions, oil paints have become less in demand in comparison with other paintwork materials.

Currently, oil paints are used very rarely. However, many home masters of the "old school" still tend to use only them, explaining their choice for the following reasons:

Oil paints are low cost. Until oil formulations will differ from their counterparts more favorable prices they will be in demand. Oil coatings are available to any buyer, regardless of the thickness of his wallet, which allows you to save quite decent amounts of money during the painting of large areas.
Oil paints are resistant to moisture. They perfectly protect wooden, concrete and metal surfaces from the damaging effects of water. Can be used for coloring interior spaces, and any external surfaces: facades of houses, roof structures, poles, fences, etc.
Ease of use. To paint any interior or outer surface absolutely no instructions required. All you need is a can of paint and a brush. Sometimes it is required to add a certain amount of solvent and mix the composition.

By the way, many home craftsmen who do not know whether acrylic paint can be applied over oil paint opt for oil paintwork materials. They explain their actions by the fact that the surface has already been treated with paint based on drying oil, which means that there is no need for additional surface preparation. Simply put, if such paint has already been used, it means that in order to avoid problems, experiment and, as a result, it is not worth the risk.

Despite the many undeniable advantages, oil paints and varnishes are not without certain disadvantages, the main of which are the following indicators:

Small selection of colors. As a rule, in construction stores you can find oil paint, represented by only a dozen shades, which has a very negative effect on the possibility of developing a variety of design solutions.
The coating has low strength. Often, cracks and chips appear on the surface painted with oil paint. Elimination of these defects is possible as a result of re-staining, which takes some time and requires financial investments.
Oil paint fumes are toxic. The room in which painting is carried out using oil paintwork materials is filled with a persistent smell that is unsafe for human health, therefore, when performing this type of work, it is necessary to organize effective ventilation. Until the surface to be painted is completely dry, it is forbidden for a person to be in the room.

Oil paints and varnishes are made on the basis of drying oil. In turn, drying oil can be either natural or 45% composed of synthetic additives. To give the paint a particular color shade, mineral pigments are added to the drying oil, after which the composition is mixed to the consistency of a homogeneous viscous mass.

acrylic paint

Consider the advantages and disadvantages of acrylic paint. The advantages of using acrylic coloring compositions include the following characteristics:

Ecological purity. In the composition of paints and varnishes of this variety, components harmful to the human body are completely absent, which in our time is considered a very important characteristic. Even in the course of direct work with paint, when painting a particular surface, the painter does not smell.
Widest Range color shades. Currently, acrylic paints are represented on the paint and varnish market by a wide range of color tones. Even in the event that the desired tone is not on the counter, the paint of the color desired by the buyer will be prepared directly in his presence, by mixing two or three samples of paint of different color shades on a special machine. This opportunity allows you to implement any design development.
High degree of resistance to moisture, ultraviolet radiation, temperature changes. This allows you to use acrylic paint for both interior and exterior surfaces. Also, it should be noted that the layer of acrylic paint laid on the surface to be treated is vapor-permeable, as a result of which there will be no accumulation of moisture on the walls.
Coating durability. Compared to its oil counterpart, acrylic paint will last at least 2 times longer.

The only downside to acrylic paint is its high cost. What will you do? Behind high quality need to pay
Acrylic paints are made up of an acrylic composite and water. After applying the paint, during its drying, the evaporation of moisture and the polymerization of the constituent components occur, resulting in a high layer strength.

How to apply acrylic paint over oil?

And now, knowing the main advantages and disadvantages of each paint, taking into account the features of their chemical composition, we will answer the main question: “Is it possible to apply acrylic paint on oil without completely removing its layer?”

In the event that the layer of oil paint adheres firmly to the surface, does not peel off, there are no cracks and chips in it, acrylic paint called "Master-121" can be applied on top. This coloring agent is a universal composition, which is characterized the highest degree adhesion even to the most even and smooth surfaces.

Using "Master-121", you can be completely sure that acrylic paint will reliably lie on a layer of oil paint. This option is the simplest solution.

Acrylic paint adheres very well to surfaces previously painted with oil paint. However, to prevent the acrylic paint from peeling off the oil base after a while, the surface to be painted must be treated with the utmost care. In the course of surface preparation, it is necessary to perform the following types of work:

Carefully sand the surface to which the acrylic paint will be applied with fine-grained sandpaper.
Further, dust, dirt, remnants of abrasive material should be removed from the surface, and then degreased. As a degreaser, you can use a solution of soap in warm water.
Wait for the degreasing solution to dry completely.
Paint the surface to be treated with several layers of acrylic paint.

Having completed the entire range of the preparatory work described above, some home craftsmen still doubt the reliability of such a connection. In order for acrylic paint to adhere well to a surface previously painted with oil paint, the coloring agent must be diluted with water in a ratio of 1: 1.

The fact is that commercially available acrylic paint is a fairly thick solution. After adding water to it in the indicated proportion, a composition with the same properties will be obtained, which will lie on the treated surface in an even and beautiful layer.

In the event that an airbrush is used to paint the surface, acrylic paint must be diluted with a special solvent. This solvent has two varieties, one of which will give the treated surface a matte finish, the other - glossy.

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