A primer is the most basic method to protect wood structures from collapse. Direct sun will dry out and discolor the item. Precipitation and high humidity will provoke swelling, decay, and deformation.

Insects will destroy the structure of the timber. The constituents of the soil penetrate deeply into the wood, thereby protecting it from the effects of destructive factors. An additional bonus - much less paint will be consumed when painting.

Variety of wood primers before painting

The purpose of priming is not only to protect wood from unwanted influences, but also to improve the quality of future painting. Depending on the desired result, operating conditions and further processing of the timber or board, the primer can belong to soluble materials (diluted with heated water) or water-repellent.

Penetrating primer is a universal coating suitable for all types of staining. Well absorbed, no delamination. This option is also suitable for a primer on wood for painting with acrylic paint.

If you need a primer for wood for painting with alkyd paint (PF-115), you will need an alkyd-based suspension. The composition is similar to the "filling" of enamels, but dries faster, there is more solvent, pigments are much cheaper. This is an advantageous option for primer on wood for painting with enamel.

Polyurethane mixture is an ideal choice for parquet boards. There are no toning additives, the cost is by no means democratic. Wood primer for painting with oil paint is carried out with linseed oil. It will go to a depth of a couple of millimeters. Good adhesion is ensured, the influence of moisture is minimal. An oil mixture is popular: it is used for previously painted areas or for the first impregnation.

Primer selection criteria

The first requirement for a quality primer is whether it is transparent. The lack of color will not force you to be limited to a certain darker shade of paint. A film that does not raise the lint is created, eliminating the need for sanding. After processing, the wood will be resistant to the appearance of fungi and mold.

Pre-treatment before painting

Any wooden element is afraid of insects. An antiseptic primer neutralizes the effects of pests.

The suspension should be applied at a positive temperature: the lower the indicator, the longer the element dries. Particleboard and plywood will require a deep penetration mixture. Priming is carried out with brushes, except for aerosol products. Before applying the next layer, the material must dry for at least several hours. If the wood is not expensive, or the design is "not responsible" or is hidden from view, it is not worth buying an expensive suspension, it is better to apply an additional layer of coating.

If the wood has already been painted, but the paint needs to be renewed, determine which paint was originally used. If it matches the future one, cleaning with sandpaper or a special sanding mesh is not required. Also pay attention to the color. In any case, a layer of primer will not deteriorate the condition of the structure. To do this, it is better to remove the old layer with a hairdryer or solvent, then an antiseptic will follow, then the appropriate type of primer.

A properly selected wood protective coating will significantly extend its service life.

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Why priming the floor?

A primer is a special compound applied to the surface before final finishing.

Depending on the application surface (floor, wall, ceiling), operating characteristics (dry rooms or with high humidity), the composition of the base (concrete, wood, etc.), resistance to various loads, various types of primers are also used.

In our announcement, we will focus on primers that are designed specifically for the floor.

The main task of the primer is to provide reliable adhesion of the flooring to the substrate.

This process significantly extends the life of the flooring. In addition, such formulations provide protection of the base from the spread of fungi and mold.

As you know, during the repair, a lot of dust can accumulate on the concrete base, which cannot be completely removed due to the nature of the concrete coating. If it is not primed, the dust will interfere with the high-quality adhesion of the base to the surface of the flooring material.

Types of primers.

Primers can vary in place of use: universal, which can be used indoors and outdoors, as well as specialized.

According to another criterion, the primers may differ in base material:

Today the market offers both universal formulations and highly specialized ones:

1. Acrylic or emulsion. It is universal, used for almost all types of surfaces: concrete, wood, brick, plasterboard, putty, etc. In addition to the base of the floor, walls can also be treated with such compounds.
   Advantages:

• Can be diluted with water.
• Ease of use with your own hands.
• Fast drying within 2-4 hours.
• No strong odor.

On an acrylic basis, both surface and deep penetration compounds can be made.

1. An alkyd wood floor primer is most often used to prepare surfaces for painting. The drying time of the composition is 10-16 hours. The main feature is the loosening of the top layer of wood, which can significantly improve the adhesion between wood and paint.
   Thanks to the use of such a soil, the life of the wood is significantly increased.

   Primer for wood for painting: types and applications

   The alkyd primer is suitable for metal surfaces, but not for mineral substrates.

1. Polyurethane and epoxy primers are dyes diluted with solvents. Polyurethane concrete floor primer is used to prepare the substrate for the application of enamels.
2. Shellac primer is used in the processing of softwoods, especially when working with water-based stains.
3. Polystyrene primers are an excellent option for wood surfaces.

The next criterion by which soil mixtures can differ is - mechanism of action:

1. Deep penetration. Such compounds are able to penetrate into the base to a considerable depth, which can reach 9-10 cm. This feature allows not only to prepare the base for laying the coating, but also to strengthen it by gluing it together.

1. Reinforcing compounds that differ in a relatively small depth of penetration into the base. They are recommended for use on solid floors that do not need reinforcement.

FEATURES OF PRIMERS APPLIED ON CONCRETE

A key feature of a concrete base is a smooth surface. Concrete has poor adhesion to the topcoat, so a concrete floor primer is used.

Another feature of concrete is poor moisture absorption. Given this nuance, perchlorovinyl and other polymeric floor compositions, the main components of which are sand and other fillers, are an excellent choice for concrete substrates. Such additives give the floor surface a roughness, which improves the adhesion process.

Before you choose a primer for a self-leveling floor, you should evaluate all the features of the base. The operating conditions of the coating should also be taken into account.

PRIMER FOR WOODEN FLOORS

Applying a primer to wooden subfloors achieves several goals:

1. Waterproofing of the base is provided, the wood is protected from moisture, and accordingly, its service life is extended.
2. The adhesion of the coating to the substrate is improved. Most often we are talking about varnished coatings.
3. The natural color of wood is retained.

Most often, the following compositions are used for wood:

1. Phenolic, which are used for both wood and metal surfaces.
2. Glyphthal compositions. They are toxic, therefore, the room must be ventilated when applying such primers.

In our Atelier store you can choose the primer that best suits your needs. The assortment can be viewed here.

Primer for wood. Subtleties of choice and application

Wood has been and will be one of the most popular materials in construction or decoration, since its performance and appearance are an order of magnitude higher than non-natural materials. Excellent sound insulation, tactile sensations, heat retention, high strength and rigidity - this is a technological material that lends itself perfectly to any processing, and thanks to wood, a warm, cozy and relaxing atmosphere is created in the house.

Knowing the nuances of preparing wood for finishing and caring for it allows you to maintain aesthetics, gloss and an attractive external gloss for many years.

Wood primer - what are its advantages and how is it used correctly?

Wood painting

Experienced specialists share the secrets of choosing the right composition:

• Shellac - a specific composition responsible for neutralizing the resin. In coniferous wood processing conditions, shellac primer protects varnished or painted wood from discoloration when resin is released on the knots;
• Alkyd - the composition penetrates well into the pores of the tree, fills microcracks and serves as protection. The disadvantage is a long drying period and smell, therefore it is undesirable to work with them in residential premises;
• Acrylic is one of the best offers on the market today. Deep impregnation of wood, bonding of fibers, a vapor-permeable protective film is formed on the wooden surface, which prevents destruction.

The benefits of an acrylic-based wood primer are not only about giving wood strength. Among the merits, master finishers note the ease of sanding after opening, the primer dries in a couple of hours, the transparent layer on the wood can significantly reduce the consumption of expensive varnish or paint.

How to properly prime wood surfaces

The choice of a primer depends on the following criteria - external or internal finishing, the time allotted for work, and how the tree will be opened in the future - varnish or staining. In case of high humidity and interior work, an acrylic composition is suitable; aerosols or liquid wax can be used for priming wood under varnish, if only one layer of primer is required - the covering alkyd emulsion fits perfectly in one layer.

Technology for working with wood primers:

• Surface - Remove all foreign particles, bitumen, grease stains, nails or paint. You can work either with a conventional metal brush by hand or with a grinding abrasive. The main thing is to get a clean, uniform surface;
• Wipe the wood down with a cloth dampened in solvent to remove any greasy or dirty stains;
• Preparation of the composition - high-quality priming is carried out only with a thoroughly mixed ready-made solution. Experienced craftsmen stir the emulsion for 3-5 minutes;
• For work, brushes, a roller or a spray gun are used, when it comes to hard-to-reach places or logs, working with a spray gun is the best option.

There are nuances of working with a primer that help to obtain a high-quality result in specific cases: the primer of plywood and chipboard should be liquid, applied in a very thin layer up to 4 times. For a spray gun, the consistency of the primer should be more fluid than working with a roller or brush. In hot summer conditions, experienced wood finishers do not recommend priming outdoors, since the compounds dry quickly and the wood is not impregnated deep enough.

It can even get confusing among the many colorants that can be used on wood. But they all have one thing in common - the extreme exactingness to the surface on which paint, enamel or drying oil is to be applied. To improve the condition of the substrate, apply a special primer for painting. It is important to understand its key features, otherwise the correct choice and application of such an important mixture will be impossible.

Peculiarities

Wood is distinguished by a number of valuable properties: it is relatively light, durable, retains heat well, aesthetically pleasing and environmentally safe, affordable and easy to process.

The surface of any tree species intensively absorbs the applied paint. Therefore, a primer for wood should eliminate unevenness and roughness of the outer layer, as well as reduce the absorption of paints and varnishes. An important requirement for impregnation is deep penetration under the surface and bonding of the material from the inside. Outside, upon drying, a crystalline film appears, impervious to water, which stops the development of decay of the massif.

Varieties

There are a number of compounds that can be applied to wood substrates. Some of them dissolve in warm water, others are completely impervious to liquid. The difference is that the first type is designed to avoid corrosion of the wood, while the other enhances the hydrophobic properties of the surface to the maximum possible.

According to the chemical composition, a primer is distinguished:

• oil;
• acrylic;
• alkyd;
• epoxy;
• shellac for wood.

There are other types of primer, but these are the most commonly used at the moment. It is worth priming with oil mixtures previously painted surfaces or those in need of primary impregnation. It is necessary to apply the material in one layer before painting and putty. Acrylic compounds are supposed to be applied several times, immediately after that you can use the base paint.

The alkyd type is recommended for use in cases where the tree has not been previously processed. At the same time, the surface becomes extremely flat and smoothed, the pile is eliminated. The pigment-containing primer is capable of forming a strong matte film. Then the top color is enhanced, which will be used for subsequent staining. The drying period ranges from 12 to 16 hours.

Acrylic primers are universally recognized because they can be used on all surfaces. Such impregnation has almost no specific smell, it dries quickly (60 - 240 minutes), if necessary, diluted with water at room temperature. Shellac primers are intended for smoothing the surface and masking knots, resin pockets. They can be used to isolate soluble stains.

Epoxy and polyurethane primers are the worst option, in addition, they do not have a special formulation and application scheme.

One of the key considerations when choosing primers is their level of transparency. The higher it is, the more possibilities the designer has for surface finishing. The original wood grain is enhanced by transparent compounds better than opaque ones. In addition, the pile does not rise, there is no need to sand the primed surface. Primers based on nitrocellulose and a mixture of rosin and casein are easy to apply, easy to use, and effectively suppress the development of mold. Such mixtures often include oil, glue, various types of pigments.

Modern primers necessarily contain an antiseptic component that helps suppress the emergence of bacterial colonies, as well as agents that prevent insect aggression. It will not be possible to replace the primer mixture with a combination of paint and solvent: this will significantly impair the quality of the finish and will be significantly more expensive.

To choose the right primer, you need to analyze several circumstances:

• conditions for applying the primer;
• exact location of the surface;
• time that can be spent on work.

Some primers are designed for indoor use, while others are suitable for preparing facade surfaces outdoors. Open terrain makes drying difficult. At high humidity, the preparation time can increase significantly. That is why it is necessary to use mixtures with increased hydrophobic characteristics. There is no need to treat a wooden floor with such coatings (with the exception of particularly humid rooms at home). In such cases, it is advisable to use alkyd mixtures, the long drying of which pays off with resistance to water and the ability to be limited to a single layer of application.

Priming wood under varnish is somewhat more difficult: only completely transparent mixtures are suitable for this. In such cases, it is advisable to use liquid wax, aerosol or industrial-type primer. You can also treat the surface with wax, talcum powder or wood flour.

There are a number of homemade primer recipes, but you need to select a specific option very carefully, since a mistake can lead to a deterioration in the aesthetic appearance.

How to apply?

In order for acrylic paint or enamel to lay on the wood well, you need to take care not only of choosing a good primer. The wood must be sanded, externally noticeable and disguised defects must be eliminated, and moisture absorption evaluated. This data allows you to select a primer in preparation for work. All primers (with the exception of aerosols) are applied to the wood using brushes or rollers.

The method of application is determined by:

• the density of the substance;
• the degree of homogeneity;
• the quality and structure of the surface to be coated.

The old paintwork (it does not matter if it is applied to the stairs or cabinet, window sill) must be completely removed. The only exceptions to this rule are paints that match the new coating (provided the original coat is strong and free from delamination). You can degrease the base with turpentine, acetone and universal rinsing compounds. The resin cavities are spilled with a selected substance and the resulting solution is collected with a swab.

Acrylic primer is used in the form of a suspension that is efficient at temperatures from +5 to +30 degrees. If this requirement is not met, the rate of drying decreases, as does the quality of surface impregnation. A deep penetration primer is required to coat chipboards. Each next layer should be used at least 2 - 3 hours after the previous one. Then the material consumption is significantly reduced.

If you do not save money, apply more often, the primer will penetrate deeper. If you buy an inexpensive primer and apply it twice, you can save money by providing a decent level of coverage. Applying a wood primer is important. You need to take her choice seriously. This will affect the adhesion of the surface.

You will learn more about a primer for painting for wood in the following video.

Wood is traditionally an environmentally friendly and demanded material, from which not only pieces of furniture are made - various surfaces in the house are created from it. A primer for wood for painting must be of high quality and differ in functionality. What are its advantages, types, how to apply such a solution correctly, our article will tell.

This composition, presented in liquid form, is used for surface treatment for varnish or subsequent painting. Most often, manufacturers include special substances in it, which are characterized by the subsequent formation of a film - oils, bitumen, resins, various types of glue, as well as mandatory auxiliary components necessary for quick drying, pigments and other additives.

The base of the primer protective mixture is often not only acrylic, alkyd, but also mineral, oil and others. The priming performed before coating the wood with varnish will help to make it budgetary and simplify the process of subsequent finishing of any wood, as well as increase the shelf life of the material.

As you know, wooden surfaces of furniture, floors and others react very badly to the effects of negative factors that provoke damage and further destruction of wood, such as precipitation and excessive air humidity (from which the tree can swell and deform), exposure to the scorching rays of the sun ( provoke wood burnout), insect pests (destroy the structure of wood). Primers for varnish are designed to strengthen and protect the surface, and in the future to ensure its reliable connection with varnish or paint.

Why is a primer for wood under varnish necessary? It performs the function of disinfection, since cheap wood varieties tend to rot. Antiseptic impregnation of floors, furniture and other surfaces prevents the appearance of mold, which destroys organic fibers. The primer is indispensable for strengthening the surface, as the resins contained in it get caught between the fibers, thus sticking them together. This is true for old and crumbling wood. The primer is needed to reduce the absorbency of the wood. The primer for coating with varnish or paint acts as a separating and protective layer. The primer retains tannin inside the wood - a natural dye that often appears through water-dispersion coatings with ugly stains.

Advantages

Some poorly informed craftsmen mistakenly believe that the primer can really be replaced with an identical paint layer with the addition of a solvent. But experts strongly disagree with this. In this case, it turns out that the finish at the exit will be of lower quality, and you will need to use up a lot more material.

The obvious advantages of primers for wood include their ability to penetrate into layers of material, providing impregnation and strength. The primer for outdoor use fills the pores and small cracks, prevents the wood from collapsing under the influence of excessive moisture. After priming the floor or furniture, the absorbency of wood materials decreases. By performing preliminary priming works, it is really possible to reduce paint consumption, since the primer is much cheaper. The composition of the product includes antiseptic components that have a disinfectant effect. That is, performing priming work can prevent the formation of mold or rot. This property is relevant for processing items that are located on the street. The use of primers will also enhance the natural beauty of the wood and make it durable.

Compositional classification

Experts classify primers for floors and any other wood surface according to the composition of the main active ingredient and the functions they perform. Let us dwell on the types of such solutions in more detail.

Acrylic based

It is universal - it can serve as protection against negative external factors and provide good adhesion. The acrylic primer absorbs quickly and dries up after a couple of hours. The acrylic primer does not have a strong strong odor. Suitable for priming wood, concrete, brick, cement, fiberboard, chipboard.

Based on alkyd resins

An alkyd primer can improve the adhesion of wood for further work. It is characterized by a distinct odor, dries up within 10 - 14 hours. For example, an alkyd primer is suitable for decoupage on wood. Alkyd primer will be appreciated by those who are fond of this art form and plan to carry out renovation work. Such a mixture can be used to process wood, concrete, gas silicate and expanded clay concrete blocks, bricks, plaster.

Silicone-acrylic

They perfectly protect wood from moisture and maintain its internal balance. They are a kind of waterproofing for wood.

Shellac

They are a variation on the theme of primers. Suitable for working with raw wood. They will help to isolate the layers of the tree after cutting the knots and removing the bark.

Epoxy

Epoxy and polyurethane primers are topcoats that have been thinned with a special solvent. The formulations of polyurethane and epoxy primers differ depending on the manufacturer. According to experts, they cannot be considered the best options for priming wood.

By functional features

Anti-corrosion and antiseptic

They will help protect the tree from the unpleasant and common phenomenon of corrosion and insect attack. Primer mixes partially adopt this feature, since the above points are key in carrying out work on effective wood processing.

Deep penetration primer

It is used to prepare already fairly old and loosely structured surfaces for varnish - in particular, the floor. This is necessary because the top layer of old wood tends to coarse and flake off.

For many years, popular deep penetration primers have been marketed under the Tikkurila brand. The composition of Tikkuril products contains flax oil. Tikkuril antiseptics are instantly absorbed and dry. Tikkuril primers protect wood from moisture, prevent mold, mildew, and rot to start. Tikkurila products are presented in a wide palette and are suitable for protecting wood outside the house. Tikkuril primer does not interfere with exposure to sunlight, therefore, after applying it, it is worth further coating with varnish or paint as soon as possible.

To keep the paint on furniture for a long time and well, the surface should be primed with Tikkurila for furniture. The primer for Tikkuril furniture can be tinted in any desired color. With Tikkurila, not only wood is often primed, but also complex tops such as aluminum, PVC plastic, galvanized steel.

All Tikkuril deep penetration primers provide fast and excellent results.

Primer varnished

A product that is a combination of primer and varnish. Ideal for treating wood floors and similar finishes. It is able not only to strengthen the wood of the floor, but also to reduce the consumption of other expensive materials. This tool is recommended to be used not only for ordinary floors, but also for parquet.

Waterproofing agent

Allows you to reliably protect wood from the ingress and destructive effects of moisture.

Universal

These primers combine all of the above qualities. The paradox is that in the case of individual comparison, such products do not compete with specialized primers.

So, the choice of a primer for a wooden floor or furniture, outdoor work is a responsible matter. Universal products are suitable for quick and effective surface treatment for varnishing, painting or finishing. They do not have a specific odor that is unpleasant and harmful to human health and dry quite quickly. A deep penetrating primer mixture is necessary to transform old wood - for example, a piece of oak parquet, which has been serving for ten years. Waterproofing agents are necessary when finishing the outer layer of wood, that is, for facade work. Pinotex soil can be called a specialized composition. It is focused on solving specific problems that have arisen.

How to apply the primer

The priming technique is not as difficult as it seems. The surface should be simply processed using a brush or roller. Most often, the manufacturer indicates the required consistency and the best tool in the information located on the package. The mechanized method is also popular today - it corresponds to that used for plastering on lighthouses. For these purposes, a conventional and well-known spray gun is suitable.

If you are going to ground thoroughly, for the first time, people with experience advise using a more liquid solution. So the product will be able to spread better and penetrate into all the cracks. Further, the layers can be applied in a consistency that is indicated by the manufacturer on the package.

Priming is best done in warm and dry weather. The temperature range from 5 to 35 degrees Celsius will perfectly help you in performing such manipulations. Wait a couple of hours after each application before re-priming or painting.

Preparing for the interior decoration of the house - in particular, the floor - can be difficult for beginners. First, you need to clean the wood from dirt, old paint layers, get rid of various flaws. This is done using sandpaper or a spatula. But this is difficult, because it is advised to rip off the old paint using a construction hair dryer. At the end of this procedure, it is recommended to treat the wood with a solvent and fine sandpaper. If fresh wood needs to be cleaned, it is best to sand and sand it mechanically. Then fill up the cracks with a putty. Only then is it permissible to carry out priming.

• Dmitry Ivanovich

Wood is a natural material with high porosity and a large number of natural enemies. Mold, algae, fungi, insect pests quickly render wooden buildings unusable if they are not properly protected.

Unfavorable weather conditions - precipitation, temperature changes, sun and wind also negatively affect a wooden building. Particularly in need of protection are the most loaded structures - basement, window and door frames, eaves overhang.

A primer for wood reduces the porosity of the material, reduces the absorbency of compounds, protects against pests of all types, reduces the effect of precipitation, impregnation with a fire retardant increases fire resistance.

Primers for various purposes can be transparent, opaque with high hiding power, or revealing the structure of the tree. Opaque formulations are often tinted to match the topcoat for a more uniform color scheme.

In terms of chemical composition, a primer for wood for outdoor use for painting is based on:

• acrylic resins;
• alkyd resins;
• silicone acrylic;
• shellac;
• epoxy resins.

Let's consider the properties of primers in more detail.

Acrylic based

The acrylic-based primer successfully protects wood from mold infestation, bark beetles and discoloration. Differs in resistance to UV radiation, temperature changes, dries quickly and does not have an unpleasant odor, it is applied in 2-3 layers.

This wood primer is especially suitable for painting with acrylic paint, but it can also be used for other types of painting. Acrylic primers are inexpensive, effective, environmentally friendly and harmless to humans.

Based on alkyd resins

Alkyd primer is used for painting with alkyd paints and enamels, creating a water-repellent layer on the surface. Alkyd primer is an ideal coating for previously painted surfaces.

The alkyd composition can be diluted with water, this is an economy class primer with a working life of 3-5 years, the disadvantage is that it dries for a long time, from 10 to 18 hours, each layer has an unpleasant specific odor.

Silicone acrylic primers

Silicone-acrylic compounds are one of the most durable and effective, they penetrate deeply into the pores of wood, strengthening and protecting from the absorption of atmospheric moisture and sunlight, resistant to all negative factors, harmless, but expensive. They are used for painting with latex, alkyd, silicone and water-based varnishes, glazes and paints.

Shellac

Shellac primer is used for knotty softwood to neutralize the natural resin released through the knots and to isolate a layer of water-soluble stains. Shellac evens out the surface of the wood, thanks to which the finishing paint layer is easy to apply, and paint consumption is reduced.

Epoxy

A two-component epoxy resin-based paintable wood primer forms a protective film on the wood surface that is resistant to abrasion, mechanical damage and weather conditions. The primer is expensive, it is often used indoors for furniture or parquet.

By functional features

On the construction chemistry market, primers of various compositions and purposes are offered, both from famous brands and little-known manufacturers. Functionally, wood primer before painting is divided into the following types:

• anticorrosive, protecting against cracking, drying out, loss of knots;
• antiseptics that prevent biological damage;
• hydrophobic, preventing moisture absorption;
• fire retardants that increase the degree of fire resistance;
• universal formulations containing all the previous components.

There are surface protection formulations and deep penetration formulations that provide long-term protection, the best manufacturers promise the effectiveness of the formulation up to 25 years.

Anti-corrosion and antiseptic primers

Anticorrosive and antiseptic primers protect the wood structure from cracking and other types of corrosion, the presence of fungicides in the composition guarantees protection against pests, fungi, and mold. They are also used on old paint coatings for surface hardening.

Deep penetration

The main advantage of deep penetration primers is long-term protection and reduced consumption of finishing paint material, that is, direct savings.

If linseed oil is present in the composition, such a primer will protect against moisture, protect against pest damage. Primers with deep penetration on and protect wood from fading, and therefore require paint or varnish with a UV filter.

It is especially important to use deep penetration compounds on the surfaces of solid wood materials of artificial origin - chipboard, fiberboard, OSB, plywood.

Primer varnished

Compounds that simultaneously protect wood and form a varnish finish on the surface are more often used for treating wood materials indoors. Unfortunately, a two-component composition always loses to two single-component ones in terms of the quality of protective properties.

Waterproofing agent

Waterproofing (or water-repelling) compositions are used for wood used in atmospheric conditions or high humidity, for example, in baths and saunas. They form a film on the surface that prevents moisture absorption.

Universal primers

universal primer compositions have all the properties listed above, are used when fast processing is required, but their effectiveness is lower than specialized compositions.

Average cost and where to buy

The cost of primers depends on many components:

• chemical composition;
• destination;
• validity period;
• hiding power;
• manufacturer.

Of course, the cost of an acrylic primer of a domestic manufacturer with a working life of 5 years will be significantly lower than the cost of a primer based on epoxy resin of a world famous foreign brand.

And yet, despite the high cost, it is necessary to purchase the products of firms that have been tested for at least 10 years of production of high-quality goods, and specialize in construction chemicals:

• Tikkurila (Finland);
• Pinotex (Estonia);
• Biofa (Germany);
• Belinka (Slovenia);
• Unibud (Belarus);
• Neomid (RF).

Average price - 300 rubles. per liter.

The best choice is to purchase at the same time a primer and a topcoat of the same manufacturer from an authorized dealer or representative office of the company, this guarantees compatibility and better performance of different layers.

Application technology

Applying a primer to an external wooden surface will not be difficult, but it will require preparatory work, the composition of which depends on the time of construction - it is a new building or a house with a history, repeatedly painted in the past.

Old paint

Before priming, it is necessary to remove the old paint layer, assess the condition of the wood. When old paint peels off, it is removed with a spatula, warming up with a construction hairdryer.

• In case of damage by pests or disease, remove the damage, fill the irregularities with a filler.
• Check the tightness of the seams between the rims, if necessary, re-poke the seams.
• The walls are polished.
• Dust the surface with a blow-out vacuum cleaner or a damp cloth, sponge, rinse the oil stains.
• Dry the surface.
• Paint.

Coloring is carried out in dry, calm weather, preferably without the sun, at temperatures from +5 to + 30 ° C. For priming, you can use a brush, roller or. Do not forget a set of overalls and personal protective equipment - glasses, respirator, gloves.

The ready-to-use solutions are mixed, the concentrates are diluted according to the manufacturer's recommendation.

The soil is applied with hand movements from top to bottom or from left to right, as convenient, in the direction from the eaves to the base. For large areas it is more convenient to use a spray gun, it can be rented to minimize costs, for small areas it is more convenient to use flutes.

The primer is applied in 2-3 layers, according to the manufacturer's instructions, over the dried previous layer. When using several compounds, they start sequentially with a fire retardant, then an antiseptic, the last one to apply a primer under the finish paint.

There are several types of soil that can be applied over the old paint layer, if it has not lost its bearing capacity and does not flake off, and the surface of the walls is healthy and free from defects.

For fresh wood

Fresh wood is processed in logging with temporary compounds with a validity period of about six months. Even if you purchased a primed wood, surface protection before finishing is a must.

• The walls of the new building are cycled or polished without fail.
• Check the tightness of the seams, smooth out the defects with acrylic putty.
• The walls are dust-free.
• Apply successively 2-3 layers of a fire retardant, antiseptic, and a primer tinted to match the color of the topcoat for adhesion.
• Watch a video on priming wooden walls.

Conclusion

The appearance of a wooden house will largely depend on the quality of the preparatory work and the application of primer. To prime the walls before painting means to protect the tree from destruction for a long time, to make your home durable.

Natural wood is one of the most common materials in the field of interior decoration and furnishings. Despite its many advantages, the massif is a vulnerable raw material that needs special processing and care. Many tools have been developed to improve the practicality and life of the tree. A quality wood primer will help you deal with various problems that you may encounter when working with the material. In the article, we will learn about the selection of a primer for wood for painting with acrylic paints.

Purpose of the composition

Before priming a wooden surface, you need to identify the tasks of this tool for processing.

Disinfection

Many types of wood are susceptible to putrefactive processes. As a rule, such a disadvantage is present in the available wood species. Rotting spoils the appearance of the product and shortens its service life. This process occurs due to the contact of the surface with water. A humid environment is an ideal breeding ground for bacteria. To interfere with this process, an antiseptic is added to the primer. The component retains the beauty of natural material for many years.

Reliability

The composition strengthens the top layer of the wood. This property is especially important when working with old wood. After processing, the service life of products made of natural material increases significantly, whether it be structures (stairs, furniture, decorative elements), horizontal or vertical surfaces (floor, walls). Resins in the composition of the solution penetrate deep into the fibers and reliably fasten them together.

Decreased absorption

The wood has absorbent properties, which depend on the type. If the enamel is applied to the surface of the material without pre-priming, a large amount of paint will be absorbed into the pores. As a result, most of the funds will be wasted. Micropores are sealed with primer, which creates a smooth and even surface for flawless application of paints and varnishes.

Protection

The tough protective film that appears on the wood increases the base's usability and lifespan. Products made from natural wood cost a lot, it is recommended to take care of their additional processing and protection. The primer will protect the array from corrosion, excess moisture, mold and other troubles.

Aesthetic appearance

The wood contains tannin (a natural dye). Over time, the component begins to emerge from the fibers to the surface, and therefore stains appear on the wood, spoiling the appearance of the surface. The primer will close the pores and seal the component inside.

Texture

The primer will transform the surface, make it textured and rough. Such changes have a positive effect on the adhesive properties of the material.

Colour

Pre-treatment of the primer allows you to fully reveal the beauty and richness of the paint. If you apply the enamel directly to the wood, the final result can be very different from what you want. Professionals use a white primer to reveal the shade.

Types of compositions

The modern market offers a huge range of primers designed specifically for working with wood. To make the right choice, you need to familiarize yourself with the various solutions, their features and tasks. According to the functional aspects, the specialists divided the teams into groups.

Antiseptics

Their main task is to protect natural raw materials from harmful microorganisms. Such a composition is perfect for protecting the coating from the appearance of bacteria, removing existing microorganisms that spoil the wood.

Strengthening

To make the material more reliable, dense and durable, use such compounds. On store shelves, you can find them under the names "primers" or "deep penetration primers". This treatment will increase resistance to the vagaries of the weather.

Moisture protection

Hydrophobic primers will prevent over-wetting of the material. The product is used in the processing of facades of premises. The solution is ideal for working in buildings with high humidity.

Primer composition

In terms of composition, treatment solutions have their own classification.

Acrylic primer

Acrylic penetrating primer is excellent for all types of paints and varnishes. This product is almost completely absorbed into the wood after application.

It has certain advantages:

• This primer does not have an unpleasant odor, due to which it is comfortable to work with the material.
• It takes several hours to dry (1 - 4). The time spent on processing is significantly reduced.
• The composition should be diluted with cool water.
• This primer is actively used for interior decoration.

Silicone-acrylic primer

Products of this type differ from others in their high hydrophobic properties. Pay attention to the composition if you plan to work in a humid environment. The treated surface (regardless of the dampness in the external environment) will exhibit a stable moisture level.

Alkyd

These products are used together with alkyd paints and varnishes. These solutions are very similar in composition. For painted surfaces, it is recommended to choose an alkyd primer. On sale you will find special pigmented alkyd types of mixtures that form a matte surface. For complete drying, you will have to wait 12 - 18 hours.

Polyvinyl acetate

Polyvinyl acetate groups have the distinctive advantage of fast drying. The minimum time is half an hour. To improve the adhesion of the wood after the primer has dried, it is necessary to walk over the surface with ordinary PVA glue.

Polyurethane

Such a primer will cost more than other formulations. It is used together in paints and varnishes, which contain polyurethane resins. Polyurethane primers differ from enamels and varnishes of the same name in the percentage ratio of the solvent and in the absence of tinting components.

Shellac

This type of primer is used to smooth wood surfaces. It is an effective remedy for stopping holes from which resin flows. The compositions are used as an insulating element in soluble stains.

Main selection criteria

To select the right primer, several criteria must be considered.

Place of work

Before buying a primer, you need to know exactly whether the product is being purchased for indoor or outdoor work. Some formulations are specially designed for outdoor use, while others are recommended for indoor use. A correctly selected product is the key to a high-quality result.

Microclimate

There are primers on sale that are resistant to various external influences (dry and hot air, humidity, temperature drops). Be sure to consider these properties when choosing a product. The maximum hydrophobic effect allows the use of the primer in areas with high dampness.

Drying time

This parameter should be taken into account when choosing a processing agent. In the hot season, it is recommended to carry out the priming procedure in the morning or afternoon. Drying time is significantly reduced if you work outdoors. The alkyd primer dries especially quickly and must be applied in several coats.

Material for further processing

Depending on what you will apply to the primed surface (varnish or paint), you should choose the type of composition. If you want to showcase the natural shade of natural wood, opt for clear compositions in tandem with varnishes. A white primer will reveal the fullness and richness of the paint. On a snow-white background, the color looks much more expressive.