The quality of finishing depends not only on compliance with the work technology, but also on correctly selected materials. This article will tell you how to choose a white primer for wallpaper.

Kinds

Today, white primer is available on the market in two versions. The composition is available in dry and diluted forms.

• Dry composition is a powder or granules. Before gluing the wallpaper, it must be diluted with water in accordance with the instructions (the product consumption per square meter is indicated on the packaging).
• Diluted the option is sold in the form of an emulsion already prepared for use.

The diluted material also differs in consistency:

• The advantage of the liquid mixture is that it penetrates more deeply into the structure, strengthening the base. Its costs are higher compared to a dense primer. Please note that due to the transparency of the composition, it will be difficult for beginners to achieve uniform application.
• The thick mixture lies on top of the base, performing a covering function. It does not penetrate deep, but forms a protective film. This property allows you to hide small defects and microcracks, improving leveling and adhesive properties. In their formula, thick bases contain a coloring white pigment, thanks to which they hide dark spots.

Considering the requirements necessary for this type of finishing, it is clear that thick compositions are more suitable for this, since they:

• make the surface perfectly smooth;
• Excellent for evening out color;
• lie evenly, guaranteeing equal adhesion to the wallpaper everywhere.

For finishing rooms with wallpaper, the following types of primers are most often used:

• universal;
• alkyd;
• acrylic;
• latex.

The choice of primer can affect the outcome of the repair, so you should figure out which option is right for you.

Acrylic

It is based on a styrene-alkylate dispersion and polymer binders. The material dries quickly. It matches any type of wallpaper and has no unpleasant odor.

Depending on the physical properties, acrylic primer is divided into the following types:

• adhesive (strengthens the adhesion of the wallpaper to the base, suitable for smooth surfaces);
• with effect deep penetration(for porous and less durable surfaces);
• universal (suitable for any type of surface, increases their moisture resistance, ideal for interior work);
• special (developed for different types of materials, has different properties and is selected depending on the consumer’s goals);
• impregnating (for leveling loose surfaces and smoothing out minor flaws).

Distinctive properties any acrylic primer:

• reduces glue consumption;
• protects the surface from dampness;
• eliminates the occurrence of mechanical damage;
• extends the service life of the canvas, “postponing” repeated repairs;
• diluted with water without losing its qualities.

Alkyd

The properties of this primer are similar to paint. The white-pigmented alkyd primer adheres professionally to both concrete and wood surfaces, sealing upper layer. Thanks to the formation of a protective film, the surface receives one hundred percent protection from moisture entering the building material. Due to the fact that such a primer does not have a deep penetration effect, its price is inferior to other primer mixtures.

You should also take into account that alkyd primers are not suitable for some types of smooth surfaces, as well as walls that have previously been plastered.

Latex

The latex primer contains natural ingredients. Latex is a natural substance that is obtained from the sap of rubber. It is characterized by the ability to increase and maintain the elasticity and resilience of materials, as well as their resistance to tension and compression, and has hydrophobic properties (prevents moisture from entering). Due to the high cost of natural raw materials, prices for latex primers are quite high.

While perfectly protecting the base, latex primer is inferior to acrylic in its ability to adhere to the decorative layer. But if you need to strengthen loose and crumbly surfaces or wallpaper in a room with high humidity, you should pay attention to this type of base.

Universal

The name of this type speaks for itself. This primer is ideal for all types of surfaces - from smooth to loose and crumbling. Distinctive characteristic is its ability to maintain properties at lower and higher temperatures. Even after a five-time freeze-thaw process, the universal primer continues to cope with its mission.

A universal primer is created using acrylic polymers and the addition of resin polymers that enhance the effect. It penetrates deeply into the wall structure, simultaneously forming a protective film on the surface. In this way, it strengthens the foundation, protecting it from unwanted external factors without reducing adhesive properties. Most often, such primer is applied in 2 stages. It fits perfectly on bases made of gas and reinforced concrete, plasterboard and many other surfaces.

Distinctive feature This primer is due to its low consumption.

Primer adhesive

Some people prefer to prime the walls before wallpapering with glue. For priming, either choose PVA glue diluted with water, or treat the surface with casein (wallpaper) glue. Many people are attracted to this option due to its relatively low price, ease of preparation, naturalness and environmental friendliness. Let's look at the features of each option.

Priming with wallpaper glue

There are many pros and cons to this type of wall preparation for finishing. If you still decide to use it as a base before gluing wallpaper glue, it is better to choose it according to the type of wallpaper. To find out whether such a composition is suitable for priming, you need to refer to the packaging. The instructions for some types of glue contain recommendations for dilution and proportions specifically for using the glue as a primer. It is better not to use glue that is not suitable for these purposes, as this can lead to disastrous consequences and repeated repairs.

Some trade marks They produce wallpaper glue with a color indicator that helps to apply the product evenly over the entire surface. In order to prepare a base mixture from glue, no special skills are required. In addition to being easy to dilute and apply, this method is also very economical.

It is important to understand that wallpaper glue cannot hide visible flaws and make the surface perfectly flat and smooth. At high humidity premises, it is worth choosing formulations with antiseptic additives. They do not promise complete protection against mold, but the likelihood of its occurrence is significantly reduced.

Priming with PVA glue

PVA glue has been used as a primer since USSR times. This universal adhesive, which stands for polyvinyl acetate, is used in everyday life, creativity and construction industry. The glue is a thick white suspension that becomes transparent after complete drying.

There are many types of PVA glue, differing in properties and purpose (construction, carpentry, furniture). Both universal and specialized versions of the product are produced. PVA glue contains mineral particles, which increase its adhesive properties. It is added to construction concrete mixtures and putty to increase strength.

To prepare the primer mixture, PVA glue is diluted with water in a ratio of 1:2. However, many experts do not recommend using glue as a primer in this form. Firstly, over time, the film of hardened glue runs the risk of peeling off along with the decorative coating, causing you a lot of trouble. Secondly, over time the composition becomes yellow, which can cause it to show through the wallpaper. This may ruin the appearance of the finish.

Therefore if we're talking about not about quality, but about fast and budget renovation, this option can be considered. When using expensive materials and painstakingly and carefully achieving an excellent result, this option should be postponed and purchase professional specialized products.

Priming for liquid wallpaper

Liquid wallpaper is very popular. Their structure is similar to plaster, but they contain cellulose fibers and silk particles, which is why they look so unusual. Finishing with such material is considered “jewelry” work, so preparation for application must be done perfectly.

You can do the primer yourself, just like any stage of wallpapering. When preparing a wall, this is the final stage before gluing, which follows the putty. What is a primer used for? This procedure has too many tasks to ignore.

After rough processing - removing the old coating, nails, screws, protrusions, baseboards, the wall is puttied. And after puttying, the wall needs to be primed.

Why is it necessary to prime the wall?:

1. The wall is dusted, the last dust and dirt is removed, which the putty may not completely remove;
2. Subsequent glue consumption is reduced;
3. The adhesive composition after priming definitely adheres better to the surface;
4. The primer prevents the bottom layer from delaminating;
5. After priming, the wall becomes more moisture resistant;
6. The primer allows the surface to remain porous, that is, breathable;
7. This way you protect against the formation of fungus and mold.

Recently, before wallpapering, the wall was covered with newspapers, which partially replaced the functions of the primer. A modern primer composition for walls cleans the surface, making it ready for high-quality wallpapering.

Wallpaper primer: which one to choose

Next, a logical question arises: what kind of primer to choose, is there any universal formulations? Theoretically, such compositions exist, but still focus on a specific type of wallpaper, and prime the walls specifically for this wallpaper.

How to choose the right primer (video)

Which primer is best for walls under wallpaper?

The surface can also be primed with regular wallpaper glue, this is the cheapest primer. And although the working surface absorbs less moisture after such a primer, there is a risk of stains forming on the wall. Such impregnation is only possible on completely flat substrates.

Adhesive primer, in turn, is:

• Perchlorovinyl;
• Alkyd;
• Glyphthalic;
• Mineral;
• Acrylic.

The last type of primer is conventionally considered universal. One can argue whether it is the best, but that is for sure one of the best.

Acrylic primer for wallpaper: features

Acrylic impregnation is good because it is suitable for almost all surfaces. It can be used to prime a concrete wall, a wooden wall, a brick wall, or a plasterboard wall.

Main qualities of acrylic primer:

1. It is easily soluble in water;
2. Odorless;
3. Dries in five hours;
4. Suitable for almost all types of surfaces.

Acrylic primer competes with alkyd primer, which is one of the best lineups for covering wooden walls.

Alkyd primer: features

Alkyd primer is often used for repair work V country houses. If this suspension is applied to wood, a layer will be formed on which almost any decorative coating can be easily applied and reliably fixed.

There are several types of alkyd mixtures:

• A mixture based on zinc chromate. This mixture should not be applied only to walls, plaster or plaster coatings.
• Composition based on zinc phosphate. They are used to impregnate partitions, which will subsequently be painted with alkyd paints.

Alkyd impregnations dry in fifteen hours and can be used for subsequent laying of tiles.

Primer for OSB for wallpaper

OSB boards s, usually used for internal lining Unfortunately, they easily absorb moisture. This means that you cannot simply glue wallpaper onto it without a primer layer.

Interpanel seams are usually filled with sealant (sometimes with plaster). Before puttying, the seams can also be reinforced, then there will be no need to fill the gaps.

The best primer for this design is white. The white primer is applied in several layers, but, of course, only if the wallpaper is thick and its pattern is non-staining. In this case, the soil should create a waterproof film, which will allow the OSB board not to swell upon inevitable contact with the glue.

Primer for plasterboard walls

For drywall, the best primer will be the one that will increase the adhesion between the two materials several times. In this case, the composition should be applied simply. Typically, deep penetration primers are used.

When choosing a primer for drywall, be guided by the following requirements for it:

1. Improve adhesion between materials;
2. Bind dust;
3. Be non-toxic;
4. Moisture-resistant and heat-resistant;
5. Quick-drying.

To prime drywall, use only the composition that is intended for interior work. Facade primer for drywall will not work.

Priming the wall for wallpaper: the process itself

As we have already found out, the primer has two main functions - to create a layer on the surface that will be a solid foundation, a base for a decorative coating (this is the first task). The second is to create a waterproofing film so that moisture cannot penetrate deep into the wall.

Also, the primer must have antiseptic properties, killing all sorts of microorganisms that can then cause damage to the coating.

The following questions often arise on the eve of repairs:

• Do you need a primer for wallpaper? Always needed. Sometimes it is not applied to a very even wall, but again, glue stains, poor adhesion, and mold that forms over time can be the price to pay for not using a primer.
• How long after priming can I hang wallpaper? Definitely, there is no need to rush. One type of primer takes five hours to dry, another fifteen. There is time, wait a day, and then start gluing.
• Is it possible to glue wallpaper without a primer? Theoretically, it is possible if the wall is very well puttied. But again - at your own peril and risk. Still, the primer has so many functions that you shouldn’t ignore them if you want to hang wallpaper well and for a long time.

Do-it-yourself wall priming: do it step by step (video)

How to apply a primer: correctly prime the walls under the wallpaper

First you need to dilute the primer mixture. It's easier to do this in a bucket. The mixture is diluted with ordinary water. The proportions and water temperature are indicated on the packaging.

1. The mixture is mixed well. You can do this with an electric drill, and make a mixer-shaped attachment from wire. This will ensure high-quality mixing of the composition.
2. The mixture is applied to the wall with a wide brush. You do this as if you were whitewashing the ceiling - the principle of applying the mixture is the same. An even layer without smudges, puddles, or unevenly treated areas.

You can prime a flat wall not with a brush, but with a paint roller, it’s more convenient.

As for a specific brand, fortunately, the choice on the market is quite large. A well-known brand is pufas. Acrylic primer of this brand is rightfully considered one of the best.

Typical mistakes when priming

There are a number of mistakes that inexperienced repairmen often make.

Mistakes when priming:

• You cannot prime the surface with dispersion and water-based paints; these types of compositions do not have the same properties that are needed to create a primer;
• You should not apply the primer in only one layer; you may skip poorly primed areas;

It happens that the first layer is primed, but a water-based emulsion or dispersion paint. But after this, stains, gloss or matte paint structure may be visible through the wallpaper.

Do-it-yourself priming of walls for wallpaper (video)

Primer - functional important stage repairs that should not be ignored. Choose mixtures specifically for your finishing coat, do not apply wallpaper until the primer has dried thoroughly; prime the wall in two layers.

With the advent of new building materials there was an opportunity to improve the quality of repair and finishing work. To our daily life the word “European-quality renovation” was included, which implies finishing of a special quality.

During construction cannot be done immediately perfect surface, therefore it is necessary to produce additional work related to improvement, repair, leveling, strengthening. This process is called interior and exterior finishing. Finishing includes installation and finishing work.

Peculiarities

Installation work is the creation of a surface using various slabs: Chipboard, fibreboard, OSB, hardboard, slate, plywood, plasterboard, wood. As well as PVC material, ceramic tiles, etc. Finishing work includes plastering, putty, whitewashing, painting, varnishing, wallpapering. A very important component of finishing is the use of a primer.

The most important purpose of primers is to increase adhesion. “Adhesion” is translated from Latin as “sticking.” This connection occurs due to the adhesion of material molecules due to chemical exposure substances.

The primed surface strengthens the adhesion of dissimilar materials to the base. It prevents mold from developing and prevents the formation of fungus, isolates the penetration of rust onto the surface, and reduces the consumption of paint and wallpaper glue. The use of a primer when gluing wallpaper increases the comfort and quality of work and reduces labor costs.

Materials used for finishing interior spaces, cannot do without mandatory impregnation. This is required by the wallpapering process.

Kinds

The building materials market has big choice impregnating compositions for primers various surfaces. Their main task is to strengthen the foundation. But there are also additional functions.

For use with different materials There are several types that differ in their composition. Some of them are made on water based. These are acrylic, latex, silicate and silicone primers. Others are made from gypsum, cement or lime. This natural materials. There are primers based on organic solvents. These are solutions with latex, alkyds or polyurethane.

The purpose of primers may be different, but most often they successfully replace each other. For example, a deep penetration primer combines both strengthening qualities and water-repellent and adhesive functions.

Primer classification:

• Insulating. They contain resins or oils, various types of adhesives, which are film-forming substances. The waterproofing layer creates a moisture-repellent surface, which is especially important before wallpapering.
• Anti-corrosion. Created specifically for metal, they differ in their effect on the material. When moisture comes into contact with metal, chemical reaction, the material begins to oxidize, which leads to rust. It negatively affects the appearance of the room and spoils the wallpaper. To avoid this, various types of anti-corrosion primers are treated:
  1. phosphating primer containing orthophosphoric acid;
  2. The passivating primer forms an oxide film. Under the influence of impregnation, the metal takes a passive chemical form, and the film protects it from moisture;
  3. The protective primer includes zinc dust, which is destroyed when moisture gets on the metal, thereby protecting the material.

• Universal the primer is water solution with the addition of chemical compounds. Penetrating deep into the surface, it increases the adhesion of materials and removes small dust particles. It is universal because it is used for various substrates and materials. Suitable for both indoor and outdoor use.
• Antifungal primers prevent, and some formulations even actively fight, mold and mildew. At the same time, they fasten the surface and increase the adhesion of materials. They can also be used for preventive purposes.
• Betocontact primers. They contain a filler in the form of quartz or marble sand. They are used for working with plaster or ceramic tiles. It is not suitable for wallpaper.

Specifications

The characteristics of the primer are usually indicated on the product label or packaging:

• what color is it. In general, primers do not change the color of the coating they are applied to when they dry. They are transparent. But there is a covering impregnation that paints the wall in White color. This happens due to the content of a large amount of pigmenting substances in it;
• consumption per layer g/m2. This characteristic is needed to select the amount of material purchased. It also depends on the surface of application. If the amount of primer is slightly insufficient, and it is not possible to buy more, then the remainder of the solution can be diluted with the base on which it was made;
• drying time. Each manufacturer is guided by the test indications of the product. The drying time indicated on the label will help not to disrupt the technical process;
• type of material being processed. You can read on the label what type of surface this type is used for;
• type of use. For interior or exterior work;
• application method.

The remaining parameters can only be useful to narrow specialists.

Which one to choose and why is it needed?

The following types of primers are suitable for walls under wallpaper:

• Acrylic. This universal impregnation is ideal for treating wooden, concrete and brick walls. It is made on the basis of acrylic polymers, penetrates deeply into the pores of the surface and thanks to this it strengthens loose materials well. It has no pungent odor, dries quickly, is environmentally friendly and has low material consumption.
• Alkyd. This impregnation has good anti-corrosion properties. In its manufacture, zinc and phosphate are used. It is environmentally friendly and is well suited for processing metal and wood, walls made of fiberboard, chipboard and OSB boards. Diluted with white spirit. Not suitable for working with drywall and plaster. Due to the content of pigmenting particles in it, it forms a white surface. Can be used as a topcoat.
• Latex. Suitable for any surface. Quick drying.
• Mineral. Suitable for concrete, brick and plastered surfaces. It is made using cement, lime and gypsum.
• Regular adhesive. The cheapest option.

For bare walls use a deep penetration primer. These are walls made of foam and gas blocks, old lime and cement plasters. After applying the primer, it is absorbed into the base to a depth of 15 mm. Fills pores, holding the material together and forming a durable film that will provide quality connection with finishing material.

Such walls absorb moisture well. Therefore, most often it is necessary to apply a second layer, which must be used to prime the surface after the first layer has completely dried.

The primer is always applied with a roller and brush. For large volumes of work, you can use a spray bottle, not forgetting about protective clothing and a respirator.

If There are no special requirements for the base, choose a universal primer. This is latex and acrylic water-based impregnations. They are cheaper than specialized compounds, dry quickly, are economical to use, and have no chemical odor. The use of such primers will provide all the requirements.

For wooden coatings, alkyd impregnation is chosen. It hides resinous knots well, which will not appear for a long time. It is suitable for fiberboard, chipboard and OSB boards, and insulates iron bases well.

For plastered, brick, concrete, and foam block walls, mineral and silicate impregnations are used.

Choosing future coverage

The most common type of final (finishing) finishing of a room is wallpaper. During their existence, little has changed in the method of carrying out work. Only appeared additional elements preparatory work and the variety of wallpapers themselves has expanded.

Wallpaper comes in several types and types.

By moisture resistance:

• ordinary. These are paper and acrylic, they do not like moisture and mechanical stress;
• waterproof– tolerant to water ingress;
• washable– during operation, you can use non-aggressive detergents in places of heavy contamination and a brush;
• super washable- mainly different types vinyl wallpaper, moisture-resistant and wear-resistant.

According to the material and requirements for the quality of finishing of the base on which they will be glued:

• Paper. They can be multi-layered or single-layered and show all the defects of the walls, so the base must be perfectly flat and uniform. The glue makes them wet and swollen. If the base is puttied with sandless sand and not primed, the wallpaper will pull it along with it and tear it out. An exception may be the overlap method.

To create one tone, pigmented impregnation is used. It creates a white surface that prevents areas of different colors from appearing on the wall. It is easier to work with it, since unpainted areas are immediately visible;

• Non-woven. They are based on non-woven fiber made from cellulose or synthetic fibers. When choosing wallpaper, you need to pay attention to its density. They come in light, medium and heavy. The quality of the finish may not be ideal; their density may hide minor flaws in the base;
• Vinyl. Thanks to the vinyl layer on the base, they can be used in rooms with high humidity. They are durable, fade-resistant, and washable. Suitable for them relatively Smooth surface, treated with pigmented impregnation;

• For painting. A type of non-woven wallpaper. Because of what this wallpaper covers water-based paint, the base must be treated with a primer. If this is not done, the wallpaper will come off when painted;
• Liquid. In fact, this is a subtype of plaster. The price of liquid wallpaper is quite high. To save money, it is advisable to make a smooth and durable surface using sandless plaster and cover it with a primer.

How to use it correctly?

When only paper wallpaper existed, to change the interior it was enough to paste new strips of material onto existing ones. This way the concrete wall was insulated. Sometimes newspapers were even pasted on for this purpose. Now there are many new types of wallpaper for every taste and with different properties. And the walls have become more diverse.

When carrying out repairs, old wallpaper is dismantled. It is most convenient to use a hand spray with warm water and a spatula. If used wallpaper does not adhere well to the surface, you can make cuts on it with a sharp knife. Then water will penetrate under them faster.

Vinyl wallpapers non-woven backing can be removed in two stages. First it breaks vinyl covering, and then the residue is wetted with water. Instead of water, you can use a vinegar solution. There are also special tools that help remove wallpaper.

In this case, it is not necessary to prime the surface, since the wall is already saturated with glue. The use of a primer is necessary for new surfaces.

Surface treatment technology depends on the wall material:

Concrete surface

You need to clean it from dust. The cavities from fallen crushed stone and the joints between the slabs should be filled with putty and cleaned with sandpaper. You can use diluted glue to impregnate concrete.

To improve adhesion, it is preferable to use universal impregnation, mineral soil is also suitable for cement mixtures. For a high-quality result, the walls are puttied with sandless sand.

Plaster

When the plaster is not new, it must be tapped in order to find out whether it has moved away from the base. In places where there are dull sounds, it breaks off from the base. These places are impregnated with a deep penetration primer. After drying, they are plastered.

If the plaster is old or crumbling, it must be strengthened with a deep penetration primer. Depending on the condition, apply two layers. When the base is strong, proceed in the same way as with a concrete wall.

Drywall

The surface for wallpaper does not need to be treated. But it is still advisable to cover the drywall with a universal primer. It is not advisable to use PVA-based impregnation - the wallpaper will stick tightly to the base and will be very difficult to remove. Drywall seams must be puttied. The result is a surface of uneven color, which can appear through the wallpaper.

To avoid this, drywall is coated thin layer putties for leveling walls around the entire perimeter. After which the surface needs to be primed. A pigment primer won't hurt for this.

Oil paint

The paint is removed using a hair dryer and a spatula. You can get rid of it chemically. To do this you need to purchase special remedy, treat the surface with it and clean iron brush. When using an angle grinder for these purposes, there will be a lot of dust, and the sandpaper will instantly become clogged with sandpaper.

In order to properly prepare such a wall for wallpapering, you need putty. To do this, make notches on the wall using an ax, hammer or chisel. Impregnate the base with a universal primer.

After it dries, putty the mixture to level the walls. One layer of putty is enough for wallpaper. After the putty has dried, it is primed.

If it is not possible to get rid of the paint or use putty, proceed as follows. Before doing anything, the walls must be degreased. Old painted surfaces need to be roughened for better adhesion.. To do this, it is treated with sandpaper and impregnated with a universal primer.

On painted walls glue wallpaper for painting without additional processing it is forbidden. When applying paint, the moisture contained in it will not be absorbed into the wall. The wallpaper will begin to swell, the glue underneath will become wet and it will fall off under its own weight.

Wood and metal

For these bases, an alkyd primer is used. Metal and wood coated with varnish are pre-cleaned with sandpaper. The primer is applied in two layers.

For a high-quality result, internal walls are puttied with dry putty. The method of gluing wallpaper overlapping is a thing of the past, Nowadays all wallpaper is pasted end to end. To do this, create a perfectly flat surface.

Putty walls made of chipboard, OSB, plasterboard, cement and lime plasters, coated with oil paint or alkyd enamel. The solution is applied to the walls and ceiling with a thickness of no more than 3-4 mm in several layers. For the first layer, putty with a larger grain size is used. Its task is to level the plane. Top with a final layer of fine grit to give the surface a perfect finish.

For work use two spatulas. One is for applying the mixture to the surface, the other is to dilute the solution and apply it to the first spatula. After applying the solution to the wall and Once dry, sand the surface with a paint mesh or fine emery cloth., fixed to the grout. Dust formed during rubbing is brushed off the wall with a broom or brush. It would be ideal to use a vacuum cleaner.

The putty surface is loose and absorbs moisture very well. It must be impregnated with a primer, which helps to bind the composition and saves the consumption of wallpaper glue.

How to divorce?

In most cases, impregnation is sold in a liquid state, ready for use. But there are times when it has a concentrated consistency. This is done to save packaging during transportation.

This impregnation must be diluted before use. It is also available in powder form. The proportions for dilution are indicated by the manufacturer. Usually water is used for dilution, but there are cases when chemical substances. For example, alkyd impregnation can be diluted with white spirit.

How long does it take to dry?

Wallpaper can be glued immediately after the primer has dried. Drying time is indicated by the manufacturer on the product label. The amount of time for this depends on external factors: humidity in the room, the possibility of ventilation (although this is not recommended) and ambient temperature. Also Drying time depends on the surface being impregnated. On porous substrates, the primer dries faster.

Different primers have different drying times. At room temperature 18-25 degrees and humidity 60 percent, acrylic impregnations dry in 4-6 hours, alkyd - 10-16, glypthal 24 hours. For deep penetration primer you will need to wait 12 hours.

Specialist painters with extensive experience in such work adhere to their schedule. When doing the work yourself, it is better to follow the manufacturer’s advice.

Successful examples and options

You can make the primer yourself.

To prepare a deep penetration primer, you will need PVA construction adhesive and water in the proportion of 1 liter of glue to 8 liters of water. Add water to the glue, stirring until smooth. It is important not to allow a large concentration of glue. Diluted with water, it should be absorbed into the base. If there is a lot of it, a film will form that will peel off.

To create a rough base that improves adhesion to wallpaper, add natural chalk or cement and mix thoroughly. One trowel is enough for 10 liters. Just in case, filter the solution through double-layer gauze. This primer strengthens and protects the surface from moisture and has an antiseptic effect.

You need to be careful with PVA glue - it tends to turn yellow over time. You need to avoid getting it on the wallpaper and the joints between them.

To increase the strength of the base and fight fungus, you can prepare a primer using copper sulfate, wood glue and laundry soap. Due to the fact that the primer will cook over fire, Aluminum and steel containers cannot be used, because the vitriol will react with them chemically.

Dissolve in seven liters of boiling water laundry soap. It can first be crushed by grating it on a coarse grater to reduce the dissolution time. Add wood glue to the boiling solution and copper sulfate. Mix thoroughly and cook the primer over low heat for about half an hour.

Stir the solution every five minutes to avoid the appearance of lumps. After thirty minutes, the finished primer is filtered through a sieve. When the solution has cooled, the primer is ready for use. This primer is suitable for strengthening block, brick and plastered walls.

To improve adhesion, you can prepare a universal primer from alum (potassium alum), chalk powder, drying oil and dry paint glue. Mixing thoroughly, the mixture is brought to a homogeneous mass.

If the primer turns out to be too viscous, then it is diluted hot water to the desired state. There is no need to strain this primer.

The solution cannot be stored for a long time; it will quickly lose its properties, so it is prepared immediately before use. This primer is suitable for any glossy or painted surface, for example, glass, hardboard, metal, tin.

Important points

You can make the primer yourself, but it is better to use a professional industrial composition. It is produced ready for use, in the form of a powder, which is diluted different bases or concentrated.

The primer must be used before it loses its properties.. When using PVA glue, you need to be especially careful: when it gets on the joints of the wallpaper, it leaves a mark. Be sure to ensure that the primer does not get on or dry on the window glass. Chemically it is impossible to get rid of its splashes; it can only be removed mechanically, but this will inevitably scratch the glass.

You also need to take care of furniture and flooring. When using a water-based primer, iron elements may oxidize and rust will show through the wallpaper. Such places must first be insulated with oil paint, varnish, and sealed with foil. Priming should be done while avoiding temperature changes in the room. This must also be followed when wallpapering.

During many repair work, the priming stage is mandatory, and this does not always depend on the material at the base of the structure, but more often on a complex of factors. Which primer is best for walls under wallpaper? — It is impossible to give a definite answer to this question, because several factors need to be taken into account. important nuances. In a nutshell, you need to take into account what kind of wallpaper you will be gluing and on what surface. In this article we will look in detail regarding the right choice soil covering of walls.

Why is it worth priming walls?

Is it really necessary to apply this very primer, because previously during repairs they managed just fine without it. Maybe this is an invention of marketers to pump out money?

We have to disappoint you, you will have to fork out for the ground. After all, we live in the 21st century, so we are unlikely to glue paper wallpaper onto newspapers. In the building materials market, buyers have long given preference to vinyl, non-woven, liquid and paintable wallpaper. They are much heavier than paper ones. Moreover, the walls modern houses They have long gone beyond concrete and brick. This can be plasterboard, gas and foam blocks, expanded clay concrete, different kinds putty, plasters. And all these materials require your own approach in order to combine the surface and type of finish.

Important! What is the best way to prime the walls before wallpapering? If you want to make cosmetic repairs using cheap materials, then you don’t have to spend money on a primer. For paper wallpaper on a brick or concrete wall, instead of primer, wallpaper glue or PVA glue diluted with water (1:7) will do just fine.

But if you want to do everything efficiently and correctly, then be sure to cover the walls with a primer. In this case, priming the walls with glue before wallpapering would be a bad option.

What is a primer used for?

Primer is an intermediate link between finishing and the basis. This link plays an important role in the quality of the entire repair. So what does a primer do?

• Increases the adhesion of the wall and finishing materials, wallpaper, for example.
• Impregnating the wall with soil reduces the consumption of wallpaper glue.
• The soil increases the moisture resistance of the wall without reducing air circulation.
• The soil additionally levels the surface of the wall, filling pores, cracks, and small irregularities.
• Applying a primer is an additional dust removal of the surface after preparatory work.
• Good primers usually contain drugs that prevent the formation of fungus, mold, and rust.
• The soil prevents the bottom layer of wallpaper from delaminating.

As you can see, primer has a lot of advantages. In addition, applying it to the wall is not particularly difficult. You just need to stir it in a bucket and roll the wall with a roller.

PVA glue for priming walls under wallpaper, like wallpaper glue, can be considered as an economical primer option. But they don’t perform as many functions - they only slightly improve the adhesion of the wall to the wallpaper, and then they are not suitable for all types of surfaces.

Important! For painted, wood or metal wall You will need a special primer; PVA will not help here.

Types of primers

There are two groups of soil:

• adhesive - improves the adhesion of two surfaces;
• strengthening - holds surface particles together and fills pores.

But by type, soils are divided according to the surface on which they are applied:

• Acrylic.
• Alkyd.
• Glypthal.
• Mineral.
• Perchlorovinyl.

By appearance they can be in the form of a liquid solution, concentrate or dry mixture.

Important! Before making a purchase, measure the area of ​​your walls, since the container with soil is designed for a certain square area. Do not forget to take into account the number of layers that will have to be applied - it depends on the characteristics of the surface.

Now let's look at each type of soil in more detail.

Acrylic (emulsion) primer

Probably the most universal of all, as it is suitable for most types of surfaces: concrete, brick, wood, plywood, even loose plaster.

Important! The only surface that is not intended for acrylic primer is one containing ferrous metal.

Features of acrylic primer:

• Acrylic primer for interior work is easily soluble in water, has no unpleasant odor and dries fairly quickly (from 2 to 5 hours).
• There are several varieties of this soil:
  1. impregnating - designed for impregnation of a loose base up to 10 cm deep;
  2. strengthening - does not penetrate deeply, is needed to bind the fine fraction on the surface, that is, it strengthens the base;
  3. adhesive - lies on the surface with a dense film and levels the base.

Important! Good soils The products of the companies “Primer”, “Kompozit”, “Osnovit”, “Knauf”, “Perfecta”, “Starateli” are considered.

Alkyd primer

Designed for wooden, even previously painted (indoors) and metal (indoors and outdoors) surfaces.

Important! Durable alkyd primer can also be used on galvanized steel, glass and tiles. But it is not suitable for plaster and drywall.

Features of alkyd primer:

• This primer is soluble in organic solvents and therefore has a characteristic odor. It dries in 10-16 hours.
• They are divided into those containing zinc chromate and those containing zinc phosphate.
• Intended for wooden surfaces - they fasten wood pores, reduce absorbency, prevent fibers from swelling, and also protect against rot and mold.
• Primers intended for metal transform rust and prevent its further spread.

Important! Such soils are represented by the brands “Kompozit”, “Aura”, “Tikkurila”.

Glyphthalic primer:

• Suitable for wooden (wood and lumber) and metal (ferrous and non-ferrous metals) surfaces, to prepare them for painting.
• Designed for surfaces that are more or less resistant to moisture.
• The coating is homogeneous, hard, anti-corrosion, with a high degree of adhesion.

Important! The oldest primer in this series is GF-020; now they use GF-0119 and GF-021 instead (there is a quick-drying type). This coating takes about a day to dry.

Mineral primer

It is made with the addition of lime, gypsum or cement. It is used for processing concrete (also expanded clay concrete), brick (including gas silicate brick), and also plastered surfaces.

Features of mineral primer:

• After application, it fills the surface pores well.
• It dries in literally a couple of hours.

Important! If the humidity in the room is high, the drying time may increase.

• Primers from Primer, Remmers, Ceresit, and Caparol have good reviews.

Perchlorovinyl primer

Designed for brick, concrete, metal surfaces. Suitable for interior and exterior work. Most often it is used for metal surfaces that are covered with scale and rust.

Features of perchlorovinyl primer:

• In warm conditions it dries quite quickly, about an hour.
• This primer contains toxic substances, so its use in residential areas is undesirable.

Important! There are also these less commonly used types of soil:

• Polyvinyl acetate - intended for concrete, brick, drywall and stone before applying polyvinyl acetate paint.
• Phenolic - intended for metal and wood before painting. Toxic.
• Polystyrene - for plaster and wood. Toxic.

Wallpaper primer - which is best for preparing a wall for wallpapering?

Let's dwell on which primer to choose for walls under wallpaper:

• Practice shows that acrylic primer is in greatest demand as the most versatile, easy to apply, non-toxic and without strong odor. It suits most walls and can also be used before applying liquid wallpaper, although in this case the primer is applied in several layers.
• If you will be gluing wallpaper not in an apartment, but, for example, in a garage or in a country house, where conditions are not quite standard, then study the features of all types of primer and choose the right option.

We prime the walls for wallpaper

To do everything in order and correctly, you need to prepare in advance necessary tools and study the process itself in detail.

Necessary equipment for work:

• Bucket to stir the mixture.
• Bath.
• Roller. Preferably with a telescopic handle so that you don’t have to drag a chair or stepladder around.

Important! The surface of the roller attachment can be made of foam rubber, velor or pile.

• Brush. Needed for corners and hard-to-reach places.

Sequence of the priming procedure:

• Before priming, it is necessary to prepare the surface. To do this, you need to clean the walls of sockets, nails and screws, old wallpaper, whitewash and plaster. If the wall was previously painted, the paint must be removed.

Important! Oil paint It’s more convenient to remove it with a spatula or a special scraper - it will fall off in layers. But water-based paint is more difficult to remove; you will have to clean it with sandpaper.

• When the surface is clean, stir the primer according to the instructions, pour a portion into the paint bath and begin applying it to the walls with a roller.
• Apply enough primer to the roller so that it does not run down the wall in streams.

Important! There should be no drips, but also make sure that there are no dry areas left. The surface of the wall should be evenly covered with soil. Coat hard-to-reach places with a brush.

• Next, wait for the first layer to dry.

Important! Each type of primer has its own drying time.

• If necessary, apply the second and subsequent layers.
• Only after the surface is completely dry, proceed to finishing it, for example, wallpapering.

Useful tips to help you avoid the most common mistakes:

• Do not apply dispersion or water-based paints instead of the appropriate primer.
• Take your time to glue the wallpaper; let the soil dry completely.
• Try to always apply two coats of primer, as you may miss some areas during the initial treatment.
• When choosing a primer, correctly match the type of surface and type of finish.

It is better not to skip the stage of priming the walls during the repair process, because this is a kind of guarantee of the quality of the cosmetic coating. Priming with glue before wallpapering is not always suitable; in most cases it will be better to purchase specially designed raw materials and treat the walls with it. The recommendations from this article will help you choose the right one and carry out the work.

Or wallpaper - work that is always carried out before further finishing. Such events are mandatory regardless of what the “finish” coating itself will be. But many either skip this stage altogether or treat it with disdain.

Why is a primer necessary before wallpapering?

• Thanks to this composition, it is easier to make the walls monochromatic. In addition, it will allow you to get rid of almost any defects on the main surface. This is especially true for transparent and light wallpaper.
• Primers allow you to completely isolate from the finish areas where dust and dirt can accumulate.
• This composition will fill all the pores of the source material. Thanks to this, the glue itself will not penetrate into them. Which improves the quality of “grip” with a roll of wallpaper.
• In general, the reliability of adhesion between different materials increases.

If you do not pay due attention to finishing at this stage, the results will not keep you waiting.

We prime the walls with wallpaper to level and clean the area

What should you consider when choosing a primer?

Soil is a suspension in liquid form. When applied to walls, it penetrates 2 cm or further into the partition. Deep penetration concentrate is used for walls with a very durable surface. Perfect solution, if you need to get a strong and smooth surface.

Which primer to choose for walls under wallpaper? Depends on the material from which the walls themselves are made.

Regular wallpaper glue is the cheapest and most accessible solution. It reduces the ability work surface absorb moisture.

But buyers don't receive additional protection from stains and dirt. This impregnation is most suitable only for perfectly smooth substrates.

There are many types of primer on the market that can be used to treat walls. In addition to the wall material, it is necessary to take into account not only the humidity in the room, but also the time that buyers are willing to wait until the composition dries.

Several types of composition can be distinguished depending on the constituent components:

1. Perchlorovinyl
2. Mineral
3. Glyphthalic
4. Alkyd
5. Acrylic

Choosing a primer for wallpaper based on composition

More details about each group

Before applying to the surface raw material must be completely cleaned of chips and dirt. The quality of the result and wallpaper sizing in general largely depends on what composition was chosen in a particular case.

Acrylic compositions are considered the most universal. Often used during the preparation of plywood and wood, brick and concrete walls. But it is forbidden to apply it to walls that contain ferrous metal. What about the main characteristics?

• Dries in 5 hours
• A universal solution for all surfaces
• No smell
• Easily dissolves in water

Most often, wood-based surfaces are treated with alkyd primers. This is especially a relevant option for those who live in country houses. After applying the composition, a layer is formed on the surface that easily holds not only wallpaper, but also other Decoration Materials. Alkyd mixtures themselves are divided into several types according to composition.

1. With zinc phosphate. Impregnate the partitions in front final painting walls
2. With zinc chromate.

Alkyd compositions have the following main parameters:

• Dries in 15 hours
• You can apply them before laying tiles
• Suitable for further painting and wallpapering
• Can be used for both interior and exterior surfaces
• Provide perfect grip

If you need to work on metal or wood surfaces, ideal option will become glypthal impregnation. In fact, this is generally the only type of soil that allows high-quality processing hardware. Choose a primer of this type Worth it for anyone who plans to wallpaper the inside of a garage built specifically from metal.

We use acrylic primer on concrete, brick and wooden walls.

About adhesive varieties

Literally a dozen years ago, any housewife could prepare a paste, which was most often used in working with wallpaper. They applied it in two layers, only after that they moved on to strips of material.

Therefore, you can often come across advice according to which it is enough to spread glue on the wall and cover everything on top with wallpaper. Such statements are true, but only partially.

On the modern market, many manufacturers offer their own version of the mixture. The specifics of application and components can be completely different. You don’t have to separately purchase a wall primer for wallpaper if it is written on the adhesive that it can also perform this function. If there are no such references, the treatment is carried out only with compounds recommended for this type of work.

What to do with liquid wallpaper?

In terms of consistency and composition, liquid wallpaper is the same as decorative plaster. This design is based on cellulose and silk type fibers.

A white suspension or a transparent emulsion is what you can use to prime liquid wallpaper. In order to completely level the surface, you will need up to 3-4 layers of material. This will help in the future to avoid stains that may appear after rolling with liquid wallpaper.

A primer containing quartz dust is applied to an absolutely smooth surface. Thanks to this, there will be no breaks, roughness or structure. The material will lie flat. You can prepare this composition yourself. It is enough to add quartz or marble dust, clean sand to the usual impregnation.

For liquid wallpaper we use a primer with quartz dust

More details about acrylic compositions

They can work perfectly with concrete, plaster and putty on walls. They always get the job done.

“Deep penetration primers” are ideally suited for situations where the wall surface has not undergone the highest quality treatment.

But conventional developments also cope well with their responsibilities.

• It is important to really choose high-quality compositions. It is better to trust well-known companies, this will help avoid troubles in the future. Inscriptions like “for wallpaper” are just a marketing ploy, so you definitely shouldn’t trust them.
• Stores often sell regular PVA glue under the guise of a special primer. You should not purchase products that do not contain acrylic polymers at all.

Pros and cons: is a primer always necessary?

Few people dare to spend money on purchasing such special compounds. After all, many manufacturers guarantee one hundred percent results even when using conventional glue. Indeed, applying a primer layer may not be considered necessary in every case.

• When performing temporary repairs, you can completely do without applying primer. Or when the wallpaper itself is not designed for a long service life.
• Lungs are acquired paper types finishing? Then you also don’t have to spend money on a primer. Perfect result cannot always be guaranteed, even if a special composition is used.

The adhesion of materials is increased thanks to a high-quality wallpaper primer. This means that the material will connect faster and better to the base. Primer compositions completely penetrate even the smallest pores. This ensures that much less glue is consumed in the future. In the majority modern means Substances with an antiseptic effect are also added. This means that you don’t have to worry about fungi appearing under the wallpaper.

We improve the adhesion of materials by priming

But the material will lag behind the walls, even if the technology is slightly compromised.

A primer should definitely be used when working with heavy wallpaper. Then special materials will help strengthen the base and ensure higher adhesion rates.

At the same time, repair costs will practically not increase. On the contrary, you will not need to buy special glue.

Methods for priming walls before wallpapering

PVA glues are indeed cheaper than other compounds, but that’s where its advantages end. It does not penetrate deep into the pores, it only creates on the surface protective film. If the base collapses, the same fate awaits the film itself.

We use PVA glue as a primer only if we have a limited budget.

He can help out only if the repairs are temporary, or the owners have serious restrictions on the funds invested. The main thing is to trust only trusted manufacturers so that the result meets your expectations. IVSIL, Knauff, Prospectors - these are just a few names that have long stood the test of time. When purchasing compounds from a little-known company, you need to pay attention Special attention composition.

For further work, you will need to purchase not only the primer itself, but also a brush for applying the composition in hard-to-reach places, a bath, paint roller with a fur coat based on velor, pile or foam rubber. The telescopic handle is much more convenient to use than a stepladder. Depending on the porosity of the walls, soil consumption can be about 100-200 ml per 1 sq.m. It will take several hours for the material to dry completely. After this, the wallpaper can be glued immediately.

Many craftsmen advise first checking the moisture content of the putty and the plaster itself. You just need to cut a square with sides 10-15 centimeters from polyethylene film, attach to the wall using a brick. The main thing is that air does not penetrate under the inner space of this film.

It is enough to leave the device for only 10-12 hours to see the first results. The walls are not completely dry if even a small amount of moisture is noticeable. If everything is dry below, then you can take the wallpaper and start gluing it.

The applied layer should not have a thickness greater than 0.4 millimeters. Loose and porous surfaces always require re-treatment.