In the list of specific building materials there is a primer. Its main purpose is to increase the adhesion ability of the coloring substance to the plastered surface. That is why priming work is classified as mandatory conditions quality repairs. The main thing is to choose the type of primer correctly and apply it in the right sequence.

What types of surfaces can be treated

Before painting or not - it depends on the type of coating. Although, according to expert painters, the primer cannot harm any finishing layer. It contains components that ensure adhesion to the wall to be treated and protect it from the formation of fungi and corrosion. The primer also differs from paint in its minimal content of coloring pigment.

During the repair process, paint is applied to the following types of coatings:

• Plaster – usually lime, gypsum or cement mortar with sand. If the finishing layer is made with high quality, then it will look perfect after painting.
• Putty is a plastic mass used as a cosmetic finishing; it is used to mask defects in plastered surfaces.
• Drywall - using this material, finishing is carried out in different rooms. At the same time, in rooms with high humidity (kitchen, bathroom), the simplest and most reliable way of decorating is painting.
• – the process of applying a dye on top of the wallpaper allows you to hide the cracks that have formed in the rough plaster.

Now let’s talk about whether it is necessary to apply a primer to the listed surfaces. Despite the fact that the plaster or putty layer water-dispersion paint fits perfectly, they are still necessarily treated with an adhesive compound. Several factors explain this need:

1. 1. The primer contains polymers that help strengthen the finishing layer and prevent it from cracking and falling off.
2. 2. Plaster, like putty, is too porous a material; they, like a sponge, are able to absorb a lot of liquid, which means that the consumption of paint when processing such an unprimed wall increases.

Some craftsmen, in order not to prime the putty before painting, go over it with a water-dispersed paint composition, after diluting it with more water. This approach is acceptable, but not economical, because primer is much cheaper than paint. Priming before painting plasterboard surfaces is also carried out in order to reduce paint consumption and increase the moisture resistance of the finished surface. It should be noted that plasterboard walls must be primed twice. The first time was immediately after installing the panels, the second time was after puttying work.

Now, regarding the need to apply a primer over old wallpaper in order to prepare it for painting water-based paint. In this case, priming helps to impregnate not only the paper, but also the base to which it is glued. As a result, when the primer dries, a durable monolithic layer is formed, which after painting does not peel off even with fluctuations in humidity and changes in room temperatures.

Why prime an already painted surface?

You can also paint over a previously painted surface, although this is incorrect, such treatment is still practiced. In this case, priming the walls before painting is done if you plan to apply paint over the old layer of water-based emulsion, but in a different color. The primer will not allow the old shade to show through the new layer. We can say that the adhesive composition will act as a barrier.

If you are going to paint a wall that has previously been treated with nitrocellulose enamel or oil paint, you must first ensure that the surfaces are rough and then apply an adhesive compound. Without the sanding process, the painted surface will not last long, because roughness improves the adherence of the applied material. If a primer for water-based paint is applied to a surface painted with other types of paints, then it is best to use a composition called Concrete contact.

Above we discussed penetrating primers, which are used to compact a porous or loose plaster layer. Concrete contact it is an adhesive substance, the component of which is an acrylic binder. Cement, quartz sand and other components are also used as fillers in the composition, which help to increase the adhesion of plaster, putty or adhesive substances to concrete and other smooth and poorly absorbent surfaces.

As mentioned above, priming walls for painting is carried out not only to compact the rough finish of the base, but also in order to save paint. Although some inexperienced craftsmen who are trying to save money on wall repairs by using primer, on the contrary, experience overspending. This factor is explained simply; to carry out repairs, an expensive primer is purchased, the properties of which are not at all needed for a certain job. For example, if you are going to paint the walls of a dry room, in which you always normal level humidity, then you should not buy a composition containing components against the formation of fungi and mold. A sales assistant in a store can help you select a primer composition.

Simple but responsible work

The right primer For walls, painting is considered one of the main stages of repair. You can get a good result only if you choose high-quality materials. You should not hope that if you use expensive water-based paint, the result will be excellent, since regardless of its chemical composition, priming the surface is necessary. If you do not do this, after a while it may appear dirty spots, remaining on the walls, mold, mildew and so on.

What else is it needed for?

A man who has never faced fulfillment similar works, you may be interested in the question: do I need to prime the walls before painting? The answer in this case is one - definitely. The paint must be placed on a solid base that will not absorb it. The primer is deeply absorbed, penetrates the structure, strengthening and preparing perfect surface. It is guaranteed to create a level base, preventing the subsequent appearance of stains and mold. In addition, priming creates a thin film on the wall, which improves the adhesion of the paint and varnish material to the coating.

If the question: whether it is necessary to prime or not, everything remains unresolved, you can give examples of what will happen to the surface if this is not done. First of all, it is necessary to take into account that the paint will be absorbed into the wall during application, which will lead to a significant increase in consumption. There will be problems with repainting in the future. The composition that was applied without priming will begin to peel off over time, so you will have to clean off the entire surface. This is fraught with subsequent puttying, since in some places it will definitely peel off, which will significantly complicate the task and increase the time required to complete it. finishing works.

A primer for painting with water-based emulsion is necessary.

Choosing the right material

Wide range of products

With a huge range of different different compositions A completely natural question arises: which primer should I choose for application? The fact is that the main difference lies in the chemical composition, which is suitable directly for certain type surfaces. In addition, there are mixtures that are intended for a specific material. Their advantage is to create ideal coatings for certain types of paints.

Type of primer	Characteristics	Compatibility
Strengthening impregnation	Acrylic water-dispersed primer with additives improves adhesion to the surface, increases weak foundation, forms a special film that prevents moisture penetration.	Used for interior finishing work with lime, gypsum plasters, and plasterboard.
Acrylic primer varnish	The composition contains acrylic composites, which are distinguished by their high penetrating properties and binding of the prepared surface.	Used for outdoor work.
Acrylic, latex primer paint	The composition is identical to the previous one, but with increased penetrating properties.	Suitable for indoor and outdoor use. It is preferably applied before painting walls with acrylic or water-based paints.
Solvent based primer	Solvent, white spirit	For interior and exterior use. It is used for processing asbestos-cement, wooden, plastered bases.
Mineral	It is obtained by adding chalk and gypsum to the main component.	Coverage for interior work. Applied to drywall, plaster. It is characterized by rapid absorption, as a result of which, 2 hours after application, coloring can begin.

It should be borne in mind that most primers for painting walls are toxic, so it is recommended to carry out work in respirators.

What do you need to know before starting work?

Failure to comply with the nuances can lead to bad consequences

Priming walls before painting is almost always necessary requirement finishing works. The only situation where it is permissible to skip it is the treatment of walls in production and warehouse premises, in the case where quality is not the main criterion. For all other situations, the use of a primer is necessary. In addition, there are a number of requirements inherent in almost all situations:

• Putty surfaces are primed only after the walls are completely dry.
• To carry out work, you need to choose a time when the wall is not exposed to direct sunlight.
• Application is carried out only on a dry base.
• Many formulations are quite thick; they can only be diluted with products and in the proportions specified by the manufacturer.
• Paint is applied only after the primer has completely dried. The time may vary not only depending on the chosen product, but also on the temperature and humidity of the surrounding air.
• The number of times to prime the wall depends on how much it will absorb the composition.
• Before processing the wood, attention is first paid to the knots. They are heated with a heat gun, the exposed resin is removed, the area is wiped with a solvent and coated with shellac.

Areas affected by mold are cleaned with a stiff brush, dried, primed with a special compound that prevents re-formation, and only then primed.

Correct application

After you have purchased the primer you have chosen in the store, you need to read the manufacturer’s recommendations regarding application to the surface. These requirements must be read and followed carefully. In this case, it is necessary to mix the base composition with the hardener, located in a separate container. The result should be a uniform composition.

Priming walls for painting is done using a roller or brush. An important condition necessary for high-quality application is maintaining the temperature in the range from +5 to +35⁰С. The base must be thoroughly cleaned of dust and dirt. If several layers of the mixture are applied, the interval between them should be at least 2 hours. Moreover, for each time the composition is prepared separately, since during long-term storage it beneficial features are decreasing. If you have any additional questions regarding the technology of applying primer to the wall, you can watch the video below.

If you need to apply a primer on the ceilings, you can use a spray bottle, which will reduce the likelihood that the entire room will be splashed as a result of the work.

Only compliance with all conditions will lead to good result.

Questions Togo, How prime walls under painting And For what This need to, resolved. How it turned out, This enough simple Job, Not requiring special skills And tools. Cope with With her quite By forces person previously Not facing With execution similar species works. However even V this caseethere is some nuances, non-compliance which Maybe bring To violation technologies And loss composition useful properties.

Professional builders will not carry out finishing work without prior preparation. Primer for walls for painting, wallpapering, putty is simply necessary. Some customers, having read the preliminary estimate, try to challenge this position. Professionals will definitely insist on carrying out this work and explain their importance for quality repairs.

Before you begin the process of priming the walls, you need to decide on a number of factors.

The main ones:

• what materials the wall is made of;
• condition of the coating;
• stages of its finishing;
• what will be the finishing?

It should be noted right away that a primer for walls before painting is required, even if the wall, at first glance, has no visible flaws. If we're talking about O secondary repairs, then another row is required preparatory stages preparation.

There is a term “adhesion” - the ability of materials to adhere to each other. If the paint does not lie tightly, then over time it will begin to peel off in certain places, even if outwardly everything looks perfect after the repair. This can be facilitated by changes in humidity and temperature, mechanical stress, the presence of third-party substances in deep layers, for example, oil stains, and other factors.

Primer before painting will prevent peeling. Coupling occurs thanks to polymer composition mixtures.

Under certain negative conditions, in particular - poor ventilation of rooms or improper insulation of walls, they accumulate excess moisture. This provokes the appearance of fungus. One of the components of the composition of primer mixtures are additives (fungicides) that interfere with this process. Where there is an increased risk of fungus, a deep penetration primer with antiseptic properties is used.

Priming the walls before painting significantly reduces paint consumption by 20 to 25%.

Types of compositions

You need to decide what compounds are used for various surfaces before priming the walls before painting.

Related article: How to putty drywall under wallpaper?

TO universal formulations include acrylic primers. Their additional advantage is that they dry quickly enough, within 24 hours, and do not have a characteristic odor. These are the most commonly used mixtures.

If you are at a loss as to which primer to choose for your walls, you can safely choose acrylic. It is suitable for painting concrete, plaster, and plasterboard walls.

There are alkyd mixtures for metal and wood surfaces. Soils are placed after preliminary preparation of the walls.

Brick and certain types textured plaster treated with silicate compounds.

Epoxy compounds are used for exterior work and impregnation of concrete structures. These are two-component primers. They are mixed before use. This is very long lasting appearance soil.

Surface preparation

Priming for painting walls occurs in several stages. Painting is preceded by cleaning from dust and dirt. To prepare the surface after an existing repair, remove residues old paint, wallpaper. Seal gaps, cracks, and uneven areas with putty mixtures. It is better to first open up these places with soil.

After the putty has dried, apply a primer. Only after this can you use paint. The selected primer is thoroughly mixed before use. Most often, water-based compositions are used to cover walls.

On video: preparing surfaces for painting.

How to apply paint primer

To apply the primer, paint brushes, a roller and a spray gun are used. In most cases it is applied using rollers. IN hard to reach places ah primed with paint brushes. The spray gun is suitable for large areas.

When applying primers, they are used as protective equipment gloves, goggles, respirator and headgear.

Optimal temperature regime for applying primer and drying it quickly from + 5 to + 25 degrees. The consumption of primer material depends on the type of surface and type of primer. Universal acrylics consume an average of 80 to 120 grams per 1 sq. m.

Related article: What is the consumption of oil paint per 1m2?

Primer of walls for water-based emulsion

Primer for water-based paint – important stage before applying the topcoat.

The most harmless kind paint coatings Water-based paint is considered harmless and quick-drying. It has the widest range of colors and shades. It is prepared on the basis of white paint by adding coloring pigments.

Construction supermarkets have special equipment with which paints are mixed. You are offered a layout of color shades under a certain number and name. The computer analyzes the colors and numbers of pigments that should give a given shade. In addition to the paint, the client buys the recommended pigment. Pigment is added to the dispenser of the device and mixed with paint. The result is the color that was previously selected on the layout.

Preparing new walls for painting with water-based paint:

1. The plastered or plasterboard surface is primed.
2. Then putty the starting layer, level the surface using an abrasive mesh.
3. After the layer has dried, apply finishing putty. Then sand with a fine-grained mesh.
4. A layer of primer is applied.
5. When the primer has dried, the wall is coated with water-based paint in two layers.

To ensure that the paint lays perfectly and is guaranteed not to cause cracks, fiberglass is additionally used.

The primer for painting with water-based paint is thoroughly mixed beforehand so that all components are evenly distributed. A universal acrylic primer is most often used. It is packaged in containers of various volumes from 1 to 10 liters.

It is recommended to prime old walls before painting (for water-based paint) twice.

The most famous primer manufacturers

Among Russian manufacturers highlight the Birss company. The composition “Betonkontakt” (universal) is in demand. It has proven itself well as a preparatory layer for painting both for interior finishing work and for exterior use.

Ceresit is a German concern. Under his license, soils are produced in many countries, including Russia. The most popular brand is ST-17. This is a universal primer, including for painting.

Related article: Simple ways to make your own primer

Another popular German brand is Knauf. The line of the most famous compositions includes: KNAUF-Kvartsgrund (universal primer mixture), KNAUF-Izogrund (deep penetration), KNAUF-Tiefengrund (for interior finishing work).

To summarize, we can conclude that the use of a primer significantly increases quality characteristics finishing works. It protects the surface from temperature changes, humidity, mold and mildew. Its use guarantees that the paint will stay on the wall surface reliably and for a long time, so experienced builders always recommend choosing a primer before painting.

The instructions for use indicate for which surfaces it is used and in what proportions. Additional advice on which primer to choose can be obtained from specialists at construction supermarkets and on manufacturers’ websites.

Rules for priming surfaces (2 videos)

Products from different manufacturers (33 photos)

Once the renovation is complete, you want the results to last for a long time. But, unfortunately, this does not always happen. Neglecting the technology of work leads to the fact that after a short time the painted walls begin to crack, the coating peels off and falls off. To prevent this from happening, proper priming of the walls before painting is necessary. Let's figure out how to do everything right.

Do I need to prime the walls before painting?

Novice finishers do not always understand why they carry out preparatory work. It seems to them that the most important thing is to level the base, then they can safely paint. In fact, this is not entirely true. Indeed, before painting it is very important to level the coating. There should be no differences, cracks or other defects. Therefore the first step competent preparation- this is alignment. It can be done different ways: , plaster, etc.

On last stage most often applied, which will become the base for painting. The next required step is priming. It is necessary because the soil:

• Strengthens the base. It binds weak, porous and loose surfaces into a single whole, making them more durable. Deep penetration formulations cope especially well with this. They are capable of going deeper by 80-100 mm, while conventional preparations do not go deeper than 20-30 mm.
• Improves adhesion or bonding of finishing material and base coat. Thanks to the primer, the paint stays better on the surface, preventing it from peeling and cracking. Moreover, during subsequent repainting it will be easier to prepare the base for work.
• Reduces coating consumption. After treatment, the absorbent properties of the base are significantly reduced. Thanks to this composition for finishing it will take about a third less.

There are materials with special properties. They can increase the moisture resistance of the surface, prevent, etc.

Soil types

The range of primers for walls for painting is varied. Based on the type of base, they can all be divided into several groups:

• Acrylic. Universal, good for wood, concrete, chipboard, plaster, drywall, etc. Can be used for porous coatings, dries in about 5 hours, odorless. Not applicable to metals.
• Glyphthalic. Area of ​​application: metal and wood. It dries in about a day and loses its properties in conditions of high humidity.
• Alkyd. A good option for any wood. After treatment, the fibers swell slightly, which significantly improves adhesion. Dries in about 15 hours.
• Perchlorovinyl. A universal preparation that is used for plasters, metal, plywood, wood, etc. Dries quickly and takes about an hour. It is better to choose it for outdoor use due to its high toxicity.
• Epoxy. A two-component product that significantly increases the adhesion of the base. Used for metal and concrete.
• Mineral with gypsum, cement or lime. Use for concrete or brick. Dries from three hours to a day.
• Aluminum. Used for wood. Additionally protects it from fungal infection.

The optimal and most popular option can be considered universal primers, which are suitable for almost any material. They improve the adhesion of the base and strengthen it, but do not have special characteristics. However, in most cases the latter is not required.

Specific characteristics of solutions

If indoors special conditions You may need to select a primer special purpose. This could be a primer:

• Antiseptic. It contains an antiseptic that prevents the development of microorganisms. Protects the wall from the appearance of fungus or mold.
• Moisture-proof. Gives the surface water repellent properties, which is necessary in rooms with.
• Deep penetration. Strengthens loose and porous substrates. Prevents peeling and cracking of decorative coating.
• Non-contact or adhesive. Improves adhesion to finishing composition. Used for non-absorbent smooth surface.

The packaging of the drug will necessarily contain recommendations for its use. The types of materials with which it is combined and the application conditions are indicated. This information should not be neglected. If the product needs to be prepared for use in some way, this should also be indicated.

How long does it take for primer to dry before painting?

This is very important point, affecting quality and speed repair work. The manufacturer always informs about the drying time of the solution. However, this is an approximate value, and almost always it is not a specific number that is indicated, but a time period during which the composition should be expected to harden. This happens because the speed of hardening of the product is influenced by various factors:

• Humidity and temperature indoors. 60-80% humidity and +15-20 C are considered optimal. In any case, you should not ventilate the room while the soil is drying. This must be done before applying it. If this rule is not followed, there is a high probability of cracks appearing.
• Quality and type of base. Porous and dry surfaces dry noticeably faster. If for some reason it is necessary to speed up the drying process of the primer, the base should be degreased before applying it.
• Composition of the drug. Products with easily volatile solvents and those with added solids harden faster.
• Number and thickness of applied layers. With each subsequent one, the time it takes for the wall to dry increases.

It is impossible to say exactly how long the primer will dry before painting. This must be determined visually. You should wait the time recommended by the manufacturer, and then touch the primer with your hand. If moisture is felt, painting will have to be postponed.

How to calculate the cost of funds

To determine approximate quantity material should be carried out . First, we determine the area that needs to be primed. This can be done by multiplying the height of each wall by its length and then adding the results together. It is important to remember to subtract the area of ​​doors and windows. We should get some number square meters.

Now we determine the rate of consumption of the product. It must be indicated on the packaging. It is rare that in such a case there will be only one number. More often a small fork of values ​​is shown. This is due to the fact that different types bases absorb differently. Knowing what kind of coating we have to work with, we select a number and multiply it by the previously calculated number of squares.

We decide on the number of layers. If you need one, all you have to do is multiply the result by a factor of 1.15 to get some supply of material. In the case when it is supposed to apply two or more layers of primer, we multiply the calculated value by their number, and then by the coefficient. This way we get an approximate amount of primer, which we focus on when purchasing.

Primer application technology

Before starting work, you should prepare your tools. Minimum set:

• foam roller or velor;
• brush for hard-to-reach places;
• paint tray for solution;
• rags for cleaning.

Priming is carried out on an already prepared surface. It must be leveled and well cleaned. If the base is porous, for example, finishing or plaster, no additional preparation is required. It is advisable to sand smooth surfaces such as fiberboard with fine-grained sandpaper. This will improve the adhesion of the material. The sandpaper is fixed on a paint grater, this makes the work much easier.

When the coating is prepared, begin priming.

1. We prepare the composition for work, following the instructions. Dry mixtures must be diluted with water. Ready-to-use, for example, water-based, open and mix well.
2. Pour the product into the paint tray.
3. We take a roller and, dipping it in primer, carefully treat the wall. We do not leave dry places, but we also do not allow drips that reduce the quality of processing.
4. We take a brush and go through all the hard-to-reach areas.

This is how the first layer of primer is applied. If the base is too loose or porous, you will need to apply the primer again. In this case, it does not matter how long the solution dries, the second layer is applied to the wet base. After that they wait completely dry and only after this, but not earlier than a day later, do they begin painting.

Primer for wood before painting is applied a little differently. The process of preparing for its application begins with the processing of knots, especially if the wood is fresh. The resin protruding above the knots is removed with a spatula. When it appears again, take a heat gun and heat the fragment, collecting the leaking resin. Then we sand the base with sandpaper. Afterwards, collect all the fine dust with a rag soaked in solvent.

We treat all areas with knots with a special insulating agent or shellac. This will prevent any resin from leaking out. Now you need to make sure that there are no greasy stains or resin residues on the base. If detected, remove them with extraction gasoline or nitro solvent. After this, you can start priming. It is correct to apply the composition to the wall with a brush. Processing of wooden ceilings is carried out in a similar way.

The answer to the question whether putty, wood, drywall and other materials need to be primed before painting will always be positive. The primer will strengthen the coating and give it additional useful characteristics, will increase adhesion and reduce the consumption of finishing compounds. The priming itself is carried out quickly and does not require any special physical or material costs.

Painting walls today is one of the most popular types of decoration for residential premises. Few people like to do repairs every year, so you need the coating to last a long time, maintaining a fresh, original appearance.
This can only be achieved if the walls have been primed before painting, and the paint itself has been selected of high quality, corresponding to the operating conditions.
Rest assured, no matter how expensive and reliable it may be, without appropriate preparation of the surface it is impossible to guarantee that it will not begin to crack or crumble after some time, that dirty stains from the walls will not appear through it, mold will not appear, etc. A primer can protect against all this.

The purpose of the primer is to prepare the surface for the subsequent application of any finishing materials, including paint and varnish coatings.
What is the essence of preparation, what does it give:

• First of all, improving the adhesive properties of the base surface. Simply put, its ability to adhere to and hold paint or other coating;
• Strengthening the base, binding its particles to each other. If the surface itself intended for painting is not able to withstand mechanical stress, if it crumbles or crumbles, then the paint itself is not able to stop and prevent this process - it will crumble along with top layer. But a primer before painting the walls will cope with this task;

• Reduced absorbency. This is especially true for plastered, puttied and other porous surfaces that absorb moisture well;
• Saving paint. If the base is primed and is not able to absorb a lot of coloring matter, most of it remains on the surface, immediately creating a uniform decorative layer;

Note. Where without a primer it would be necessary to apply two or even three layers of paint, it often allows you to get by with just one. Considering that the price good compositions is quite large compared to the cost of the soil, the savings from its use are obvious.

• Protection against bleed-through stains. Uneven color of the base or colored spots on it may show through the paint. The primer (see Primer for drywall under wallpaper - why is it needed) covers them with a thin and durable film, preventing them from leaking out;

• Protecting the base from moisture. When painting external walls or in rooms with high air humidity, a special water-repellent primer will prevent moisture from penetrating into the thickness of the material, preventing its destruction;
• Protection against fungus (see Antifungal primer - purpose and characteristics of the material). High humidity, poor thermal insulation and other factors can cause mold to appear on the walls. Primers with special fungicidal additives will help not only prevent this, but also cope with an existing problem.

As you can see, this operation has many functions. If you need a solution to at least one of the problems listed (you need to save paint, strengthen a loose base or protect it from moisture), then you can easily answer the question of whether it is necessary to prime the walls before painting.

Features of choosing a primer

The composition for priming is selected depending on the characteristics of the material that needs processing. There are many primers general use, suitable for different surfaces, and there are special mixtures with special properties, designed for specific materials and creating the basis for a certain type of paint.

Primers for walls

Let's see what priming preparations exist and which ones are used on for various reasons depending on operating conditions:

• Strengthening impregnations. These are acrylic water-dispersion primers with various additives.
  Used primarily for interior work on lime, cement-lime, gypsum plasters, drywall. They improve the adhesion of the surface to the paint, strengthen unreliable substrates, and form a film on their surface that does not allow moisture to pass through, but does not prevent the passage of air vapor;
• Acrylic primer varnishes. They are used for external walls - they penetrate deeply into them, bind dust and surface particles to each other, and create water-repellent protection;
• Acrylic and latex primer paints. Suitable for exterior and interior use, serve as an excellent base for acrylic and water-based paints;

• Solvent-based wall primer for painting. It is deeply absorbed, binds dust and plaster particles on the surface well, does not interfere with evaporation, and creates water protection.
  It is used for plastered, asbestos-cement, wooden and previously painted surfaces both inside and outside the building;

Note. Such compositions are highly flammable and care should be taken when working with them.

• Silicate primers. Great choice for preparing exterior concrete walls for painting, sand-lime brick, as well as covered with lime or cement-lime plaster, silicate paint. They are deeply absorbed into cracks and pores, clogging them;

• Two-component epoxy paints. Apply according to concrete foundations in interior spaces. Before use, you must mix the contents of the two packages and dissolve with water.

It is important! Do not mix components from different manufacturers- they may not fit chemical composition, A ready-made product will lose its beneficial properties.

Primers for wooden bases

Most often you have to paint wooden surfaces, be it partitions, walls, facade decoration, doors or window frames.
There's a whole series dedicated to them. special means, which includes:

• Drying oil. A composition that penetrates deeply into the structure of wood, protecting it from moisture and rot. Universal – can be used for interior and exterior work;
• Alkyd primers. Used before painting wood with your own hands using alkyd, oil and latex paints;

• Water-soluble acrylic primers. Give the base a uniform color before applying varnishes, paints, impregnations and stains;
• Styrene primers. They protect from rotting and form an adhesive film on the surface that improves the adhesion of phthalic and alkyd enamels to it;
• Oil primer paints. Apply after initial priming with drying oil. Suitable for processing any wood materials, as well as metal;
• Shellac primers. Their purpose is to process fresh coniferous wood oozing resin.

Primer nitrocellulose varnishes are also very popular, but they are more suitable not for walls, but for floors - they protect natural wood flooring from darkening.

Advice from experts on treating walls with primer

Not all surfaces need careful preliminary preparation. If they are durable, do not absorb water, and have good adhesive properties, you can do without this step.
The answer to the question of whether it is necessary to prime the walls before painting can be answered negatively, if we are talking about dry warehouses and other utility rooms, which do not have high decorative requirements.
In all other cases, it is better not to neglect this operation. Especially if, after rubbing your finger against the wall, a dirty mark remains on it or on the surface itself.

Before you begin this work, please study following tips and recommendations from experienced professionals:

• Freshly plastered walls can be primed only after the solution has completely dried - after 2-4 weeks;
• When treating facades, you need to make sure that they are dry and not too heated by the sun;
• If it is necessary to dilute the primer, you can use only those products specified by the manufacturer. The instructions on the package contain both this information and the recommended proportions;

• If the surface to be treated has high absorbent characteristics, the primer should be applied in 2-3 layers;
• You can start painting after the time required for the primer to dry completely. It varies for different formulations and can range from 2 to 24 hours;
• Before priming the wood, you must first treat the knots - heat them with a heat gun, collect the exposed resin with a spatula, wipe with a solvent and coat with shellac;
• Walls affected by mold are cleaned of it with a stiff brush, dried well, and only then covered with a special penetrating primer with fungicidal properties.

You can apply the primer in any way convenient for you - with a brush, brush, roller or spray. At the same time, it is important not to leave untreated areas, but also to prevent the formation of drips and puddles on the surface.

Conclusion

For more information on this topic, see short video on this page. But, based on the above, it should already be clear that the walls need to be primed. Of course, if it is important for you that the end result is pleasing to the eye and does not require periodic rework.