Do I need to prime the putty before sticking the wallpaper. Priming walls before wallpapering

Primer for walls under wallpaper is in retail, and they themselves do it quite often. But many are wondering if it is necessary to prime the walls before wallpapering, and if so, then how to prime the walls before wallpapering.
This topic will be the focus of our article. You will be able to see photos and videos on this topic and do the job correctly.

Before you decide whether you need to prime the wall before wallpapering, let's figure out why you need to prime the walls before wallpapering. After that, you can decide whether it is necessary to prime the walls before wallpapering in your case.

If you are not sure that you can correctly assess what kind of work is required in your case, you can invite the master. He will draw up a work plan, outline them and complete them in a short time.

Whether it is necessary to prime the walls before wallpapering is probably always decided by the room itself. If this is a millet utility room and almost no one is there, then it is quite possible to think why the walls should be primed before wallpapering.
But this is far from correct. After all, the wall is part of the frame of the house and the fungus can then expand throughout the structure.
So:

• The primed wall is made even and dry, the primer increases the reliability of the adhesion of the adhesive to the surface. A good primer ensures that the bottom layer remains intact and does not crack, in addition, it will not allow moisture to soak into the walls.
• The primer applied to the wall allows it to "breathe", thereby creating a good microclimate, and preventing the fungus from spreading. Do not think that the wallpaper will stick well on the wall without a primer, this is a huge misconception.
• Wall primer strengthens the outside of the wall and penetrates the inside. It simply fills the cracks and pores of the surface. It enhances the bonding of surfaces and prolongs the life of the wallpaper (see Wall decoration with wallpaper in the correct design). This is one of the main parameters why a primer is made for wallpaper.

Training

Now we will figure out how to properly prime the walls before wallpapering. Like any job, this one requires preparation. From this will be in many respects the envy of longevity.
So let's take a look at how to prime the walls for wallpaper:

• Wall priming is carried out after all the initial stages of work, including the removal of nails and old plaster.
• The primer is applied after applying the putty, which has had time to dry.
• The primer for walls under wallpaper begins with the fact that the wall is moistened with a special impregnation. This is necessary in order to wash off the dirt and dust that remains after rough processing surfaces, because wallpaper cannot be glued on a dirty wall.
  Everyone knows that newspapers were first glued to the wall and wallpaper was already on them, but now the primer has forever replaced printed materials.
• After the primer dries, the wall does not get dirty and becomes stronger than before. Thus, the wallpaper lays flat on the wall and holds firmly and for a very long time.
• If you got a wall that was previously covered with wallpaper, you need to remove them and wash off the glue. This is done with a metal spatula or scraper and water.

Attention: If the wallpaper does not absorb moisture well and does not lag behind the wall well, then cuts should be made on the wallpaper for better moisture penetration. These days, stores sell a special liquid that quickly removes wallpaper.
This liquid is added to a bucket of water, and wet the wall, leaving it soaked for half an hour. After half an hour, wet the wall again and easily remove the old wallpaper from the wall.

• When the wallpaper is removed, it is necessary to properly wash the wall warm water and clean the surface of the wall with a wide spatula from glue and whitewash.
• Often in rooms with high humidity, such as the kitchen or bathroom in the corners is going to mold. This mold must be removed so that it does not appear on the newly repaired wall.
• Places where mold has settled should be treated with bleach. As a rule, 200 grams of lime are required per liter of water. It should be noted that when pasting places where there was mold, glue must be bought with a fungicide content.
• After removing old wallpaper, glue and mold, it is necessary to meticulously inspect the surface of the walls. Found cracks and irregularities must be puttied. If your apartment is not warm enough, you can make it warmer with a thin layer of Styrofoam. This method will not only make the apartment warmer, but also hide wall defects.
  Before you prime the ceiling, you need to get rid of the hook, holes and cracks properly by filling them. If the ceiling consists of drywall, gypsum or other porous surface, then it must be primed in any case.

Primer work

Now we decide how to prime the walls before wallpapering. There are many materials in retail.
Some do it just with pva glue. The walls are also primed before wallpapering with the glue that will be used when gluing the material itself, for this it is simply made more liquid.

Dilution of the primer

Therefore, it is up to you to decide how to prime the walls under the wallpaper. Just before that, the instructions for using the primer should be carefully studied, it can simply be for different surfaces. Although all of it is applied and completely with your own hands.
So:

• The primer composition is best diluted in a bucket. The primer is different and before diluting it, you need to read the instructions that are written on the package.
• Stir the mixture well so that there are no lumps left. To stir the solution, you can use a drill with a mixer nozzle, in this case it turns out very good composition. Manually, this quality of the composition is difficult to achieve.
• The primer is applied with a wide brush. This is very similar to whitewashing the ceiling (see Ceiling lining: types of material). Having spread an even layer of the composition on the wall, avoiding irregularities and untreated areas.
• After you have primed the wall for the first time, you need to give it time to dry. Drying time is usually written on the packaging. Even if by your standards the surface of the wall after the first primer looks perfect, you still need a second coat of primer.
• A lot depends on the quality of the wall on which the primer is applied, which can be impregnated differently on the same wall. When re-priming, the quality will be excellent and there will be no differences. You can work on a completely flat wall paint roller, it is much more convenient and smoother than working with a brush.

Soil types

Before deciding how to prime walls for wallpaper, let's just look at a couple of types of mixtures most commonly used for priming a surface.

acrylic primer

This type of primer is able to work with putty, plaster and concrete. Acrylic primer always does its job.

Attention: If the wall surface is poorly treated, then a “deep penetration” primer will work just fine, but a regular primer does its job well too.

So:

• Primer for wallpaper must have good quality and in order to avoid trouble, you should buy a primer from well-known companies. You should not look at the inscription "for wallpaper", as this is nothing more than a marketing ploy.
• In the store you can still find a substance called “wallpaper primer”, which is actually just diluted PVA glue. But you need to know that this composition is several times more expensive than the PVA glue itself.

Attention: Before buying an acrylic primer, be careful and see what would be written on the package that the primer consists of a mixture of acrylic polymers, and not PVA glue.

• Acrylic primer for one square meter you will need 100-200 milliliters. This may depend on how porous the wall is.
• The primer is applied with a paint roller, but if there is hard-to-reach places, then for this it is worth working with a wide brush. The primer should dry for about three hours, after which you can start wallpapering.

Primed walls with wallpaper paste

Many are familiar with the option of priming the walls directly with wallpaper glue. Only with this option you should not rush. You need to know that not just any glue, but only a few brands of wallpaper glue is suitable for priming walls before wallpapering.
So:

• If the adhesive is intended for priming walls, then this must be written on the package.
• On the same package, it should be written how to dilute the glue in order to use it as a primer. If you did not see such an inscription, then this glue is intended only for wallpapering. Maybe this option is suitable in some cases, but still it cannot be compared with an acrylic primer, because working with it is much easier and more pleasant.

Thus, we can safely say that it is not worth saving on a primer for your home and you should not “reinvent the wheel”, because acrylic putty has already been invented and will make your home better. Although it is up to you to decide whether it is up to you to prime the walls before wallpapering.

In this article, you will learn how to properly prime the walls before wallpapering the video posted at the end of the article. And to make it clearer, I propose to consider all the nuances of this procedure.

Surface priming is an important stage in finishing work. It is carried out before applying the finish coat: plaster, wallpaper, paint. Previously, diluted with water was used as a soil. adhesive mixtures. Now the production of special synthetic compounds has been launched in production, designed for priming surfaces before plastering, painting, and especially before wallpapering.

Why do you need a primer

Let's see if the walls need to be primed before wallpapering?

The primer composition applied to the surface of the walls performs several functions.

1. It protects against dampness, mold and mildew.
2. The antiseptic components included in its composition provide reliable protection from harmful insects.
3. Plaster applied to a primed surface does not crack and lasts for a long time without crumbling.
4. The primer used in the preparation of walls for wallpapering provides a strong adhesion of decorative canvases to a cement or wooden surface. There is a significant savings in the adhesive composition, which is not absorbed into the porous structure of the main coating. Wallpaper on a pre-primed wall lasts longer and is more reliable.

Thus, in order to ensure high quality finishing work, it is imperative to prime the walls before wallpapering.

How to primer walls with your own hands

If you are doing repairs for the first time, then you will be interested in the question of how to prime the walls before sticking wallpaper and applying plaster? To find out, read on…

To treat surfaces with primer when wallpapering, you need:

• prepare surfaces;
• choose the right special composition;
• put it on the walls.

Preparing walls for primer

At the first stage, you should carefully inspect the main coating for the detection of large and small defects: cracks, chips, potholes. If there are major damages on the surface, they . Minor flaws are covered with plaster or putty. The entire wall is carefully leveled and smoothed.

Primer selection

Alkyd primer designed for application to wooden surfaces. Completely dries in 15 hours. Provides good adhesion of wallpaper sheets with wood structure.

Griftal primer used to cover metal and wooden bases located in rooms with minimal humidity. Drying time - 24 hours. For sticking wallpaper with your own hands, it must be applied to metal parts.

acrylic primer- universal protective agent used to cover any type of surface, except for metal. It dries quickly (5 hours), does not smell at all and is ideal for wallpaper.

Applying the composition to the walls

Before starting priming work, precautions should be taken: wear rubber gloves, goggles (so that splashes do not get into your eyes), cover your head with something.

Each package with building material there is an instruction for use. If the walls are primed for the first time, you need to read how to use the composition.

All soils have a liquid consistency, so they are poured in small portions into special troughs.

For work, soft rollers are used, preferably with a long handle, so that it is convenient to apply the composition while on the floor.

When priming the walls, it is important to ensure that there are no uncovered places. For this, some liquids have a colored color visible on the surface. It's so easy to spot errors.

After the primer has been applied to the walls, it is given time to dry (how much, according to the instructions) and only then the wallpaper is glued.

Quite often before applying decorative coating on the wall, it needs to be treated with a primer. The primer is different, so choosing it is a serious undertaking. In this article, we will consider whether it is necessary to prime the walls before wallpapering, painting and puttying, and also consider the main advantages of such treatment.

Why do you need to prime

Not infrequently, many refuse to prime the walls before wallpapering. Sometimes it really isn't needed. For example, if the wall is flat and strong. But if it is necessary to strengthen the surface or increase the level of adhesion, then the primer is simply irreplaceable. It can be used not only for wallpapering, but also for painting or putty. It will not only strengthen the surface of the wall, but also protect it from the negative effects of moisture and prevent the appearance of mold and mildew. In the case of wallpaper, the primer will increase the level of adhesion, which will ensure good adhesion of the coating to the wall.

Therefore, if the wall is loose, priming is simply necessary. If it is neglected, the wallpaper will not last long, and the base itself will begin to crack and crumble. Also at high rate humidity in the room, be prepared for the appearance of mold, fungus and stains on the coating. Priming is a necessary process and it is very important to carry it out correctly. First of all, you will need to choose the composition for the type of surface: wood, concrete, metal or other.

Applying a primer to the wall

Before proceeding to the main work, you first need to prepare a primer solution. So let's take a look at how to do this.

How to dilute the primer

The primer can be bought already prepared or in powder form. You can also prepare the mixture yourself from the components, but we recommend purchasing a professional version. For wallpaper as a primer, you can take wallpaper glue, after diluting it with water. To dilute the solution, first open the jar and stir its contents, this will help the solution become homogeneous. Then you can pour the required amount into a pre-prepared container. To properly dilute the solution, follow these recommendations:

Primer Benefits

Priming the walls before wallpapering is an extremely important step in repair work. Therefore, you need to do everything right and avoid mistakes, so that later there are no unforeseen complications. The wall is primed before the putty is applied, the wall is painted or the wallpaper is pasted. Let's look at the main advantages of this wall treatment:

Priming under wallpaper

How to prime the walls before wallpapering? This question worries many beginners in the construction business. As mentioned above, ordinary wallpaper glue can be used as a primer, but it must first be diluted with water. Or you can buy a ready-made mixture. So, let's look at the basic rules for priming a wall before wallpapering:

• primer can only be applied certain temperature. It should not be less than five and more than thirty degrees. The average humidity should be seventy-five percent;

Advice! After the first treatment, wait a couple of hours for the solution to dry. Remember that the drying time directly depends on the type of product you choose.

Primer for puttying and painting

To the question of how to prime the walls before puttying or painting, the answer is as follows: the procedure and basic principles are the same as for processing a wall for wallpapering. But the primer solution itself will have to be used differently. For subsequent painting of the wall, it is better to use adhesive mixtures. They will not only improve the adhesion of the paint to the wall, but also reduce the consumption of paintwork products, which will allow you to save a lot on the material.

As a primer before puttying the walls, it is better to use an acrylic or polystyrene mixture. They will not only strengthen the walls, but also provide additional protection against bacteria and moisture. In case of refusal to primer, you are at great risk, since the painted wall may crack at any time, and the putty mixture may deteriorate.

Material application methods

There are several options for treating the wall with a primer mixture for wallpapering. Can apply paint brush and a roller or purchase special equipment: a spray gun and a sprayer.

For priming the walls before wallpapering, it is better to use an ordinary roller. But if you need to process large volumes, it is better to purchase an atomizer. This will save you a lot of time and effort.

Priming walls may seem like a simple task, but it is far from it. Use our recommendations to avoid complications:

Eventually

Priming the wall before wallpapering is a must. It is also often used before painting or puttying. Priming not only strengthens the surface, increases the level of adhesion, but also additionally protects the walls. Priming methods are identical for all cases, but the types of mortars that need to be used vary significantly. The finishing process itself is not difficult, even a beginner can handle it. The main thing is to buy only quality tools and materials, because the result of the work done will depend on them. Before buying a primer, we strongly recommend that you consult with the seller, he will be able to give advice on which mixture to use to treat a particular coating. We recommend watching a special video to see the process of priming walls in practice:

Do walls need to be primed before wallpapering? This question is often asked by the owners of the apartment in anticipation of the repair. Renovating a home is always a lot of work and hassle. Even if it will be done by workers, the owners also have something to think about.

Do I need a primer before wallpapering?

A properly organized process is half the result. At the same time, I want to save money without doing extra work. The process of updating walls (wallpapering) consists of several stages. or the coating should be removed, and then the surface is prepared for gluing new wallpaper. This raises the question - "Do I need an additional primer?". Let's figure it out and find out the correct answer.

Sometimes teams of workers are ready to perform even an extra stage of repair in order to receive a large payment. But how do you know how much priming is needed? Perhaps this step in finishing can be skipped? walls before wallpapering? Today there are many options for finishing wall decoration, but wallpaper is still popular not only in residential buildings but also in offices. In matters of wall preparation, heated debates do not stop - some consider the primer to be a necessary process, others say that it is a waste of time.

When choosing a soil, it is necessary to stop the choice on the soil of deep penetration. Same way important criterion is the water resistance of the soil, because Wallpaper glue is basically water with glue added.

The soil must be strengthening, because. for internal works as a rule, gypsum materials are used, and gypsum is not distinguished by high strength (plasters, putties), unlike cement ones. Particular attention should be paid to antiseptic or anti-mold additives.

An acrylate-based, deep-penetrating, non-film all-purpose primer (important to keep your walls breathable), this primer will perfectly strengthen the substrate, even out the absorbency of the substrate, reduce the consumption of wallpaper glue, and at the same time has a highly penetrating ability. Acrylic primers are also economical in terms of consumption.

Or, it is a ready-made acrylate primer that does not require the addition of solvents or water. The antiseptic additives that make up the primer prevent the growth and spread of fungus and mold, which is why these primers are very recognizable and in demand among builders.

The primer of the walls in the first place prevents premature peeling of the wallpaper. After all, it will be a pity for the work spent, when the owners, already pacified by the end of the repair, will notice that the wallpaper, pasted with such diligence, is moving away or bubbling in some places. Such a "surprise" will spoil any mood. After all, re-gluing wallpaper is an additional cost and time spent. Whether it is necessary to prime the walls before wallpapering, we will try to explain in the next paragraph.

Reasons for priming - useful know-how

Here are a few reasons in favor of priming:

1. 1. Having impregnated the surface of the walls with a primer, we create a binding effect for the base, reducing the formation of dust and crumbling.
2. 2. Coating with a primer eliminates fungus and mold, prevents them further development and distribution.
3. 3. The base is enhanced by the binding effect of the primer, which fills microcracks.
4. 4. Adhesion increases, there is a normal coupling of the surface with the wallpaper.

So, the question of the primer should not even be disputed. There is only one clarification left - how many times to prime the surface? For optimal adhesion - several times, because the greater the thickness of the soil layer, the better the adhesion of the wallpaper to the walls. However, a measure is also needed here - after all, unjustified application of extra layers of the base will lead to overspending of materials and additional useless expenses. Consumption is calculated when using material per 1 square meter. The types of composition are different, depending on its functions, quality, density, but on average this value for a primer ranges from 100 to 350 ml per square meter. The spread is also affected by the condition of the surface to be processed.

Why prime the walls before wallpapering, we figured it out a bit. Now the question arises, what is the best way to do this. The answer suggests itself - glue-like soil. It belongs to the most unpretentious materials for any type of surface. Modern manufacturers They also offer other primers, which are selected depending on the specific surface. When choosing a composition, one should also take into account the conditions under which the room will be operated, at what temperature and humidity. But you need to start with wallpaper glue.

How to prime the walls before wallpapering, if the adhesive is not always suitable as a base for preparing the walls? There is a special adhesive composition, and whether it can be used as a primer is written in the instructions on the package. When buying glue, you need to take this moment into account. The same instructions will tell you how to use it and how to breed it. In addition, the packaging usually indicates what area the container is designed for. You may need several packs for your walls.

What else can be done to prime the walls? Has proven to be excellent acrylic material, which includes latex and acrylic, which increase adhesion by an order of magnitude. There are many types of acrylic primer, and you can choose the one that best suits your type of wall, room and conditions. environment. Such impregnation can also be used before gluing glass and non-woven wallpaper. Acrylic impregnation works best on smooth walls treated with plaster. The advantage of acrylic primer is the absence of caustic, bad smell, fast and deep penetration, the ability to dry in the shortest possible time - 4-5 hours, which will allow finishing work to be done much faster.

What else can be a primer? If you have a question about wallpapering wooden walls, then it is recommended to pre-apply an alkyd primer. The alkyd composition is highly compatible with wood, it creates perfect adhesion after application. The coating dries within 15 hours. Another option is glyptal priming, designed for wood and metal. The disadvantage of this impregnation - long time drying (days). There are restrictions for the conditions of application - reduced humidity in the room. Thus, a primer in at least one layer is a prerequisite for the durability of subsequent work. Pasting can be done only after the complete drying of the layer.

Main stages of work:

1. 1. the wall is cleaned from the previous layer - in this case, from old wallpaper;
2. 2. the surface of the wall should be leveled if there are bumps and roughness;
3. 3. if the walls are not plastered, you will need plaster and screed;
4. 4. cracks and holes must be repaired;
5. 5. all previous layers must dry completely;
6. 6. primer is applied last layer before wallpapering;
7. 7. Impregnation is applied with a roller or brush.

How to control the process - aspects of the work

So, a primer is a must. The procedure itself will not give a 100% guarantee that the wallpaper will not peel off. It also depends on the quality of the wallpaper, and on the strength of the adhesive. But we can confidently say that the refusal to impregnate the walls with a primer will lead to the wallpaper falling off and the need for re-gluing. Priming should be preceded by other important preparatory work, they depend on the type of surface. For example, old walls need putty, screed. In damaged walls, all cracks and holes are sealed, the area is leveled.

Drywall must be treated with putty without fail. You may be surprised, because the surface of drywall is already perfect. But the question is that you want to change the wallpaper before the drywall loses its properties. At the same time, it will be possible to remove the old wallpaper only by partially tearing off the drywall, that is, the surface will be damaged. If there is putty on top of the base, then it will be easier to protect the walls from damage. The final application of the primer is the final chord, which will allow you to level the walls as much as possible, ensure the prevention of the development of dampness, bacteria, fungi, and guarantee the strength of the adhesion of the wallpaper to the surface.

We choose a primer depending on the types of wall surfaces and environmental conditions - temperature, humidity. Work on applying the soil should be carried out only after the plaster has completely dried, and wallpapering - only after the last layer of impregnation has dried. Drying times, composition and consumption of materials are described in the instructions on the packaging of a particular factory composition. An adhesive can be used for all walls, an alkyd base is good for wood, and a glyptal primer is also suitable for metal. If you have Smooth surface concrete wall, but its color is too gloomy, use a white putty before priming so that the gray color of the concrete does not shine through the wallpaper.

You can save on a primer by purchasing dry mixes, but they must be diluted with water, observing correct proportions. Dry mixes may not always suit a particular surface. Moreover, preparation for use requires additional tools, it takes more time. It is more convenient to purchase ready-made formulations in liquid form. Then the processing of the walls will take less time.

Please note that the consumption of the primer composition is indicated per 1 square meter and subject to the application of only one layer.

If you are planning two or three layers, you need to take this into account when purchasing material. Another important point. Based on the consumption of the primer mixture, you can calculate which type will be the most economical. Perhaps the supermarket offers a low price for a primer, but it lasts for a smaller area than a more expensive mixture. Having carried out simple mathematical calculations, you can estimate how many cans of one primer will go to cover in two layers the area that you are going to wallpaper.

To produce priming, it is enough to purchase a suitable composition and a roller for painting or a brush. Application takes place on the entire surface. Carry out the work carefully so that every centimeter of the area is primed. After application, we wait for drying (as indicated on the package), and you can start gluing wallpaper of any type - paper, non-woven, glass. Having pasted wallpaper, in accordance with elementary rules, you can enjoy the result for many years, saving time and not spending extra money. After all, saving on finishing works always results in poor quality results and double the cost of materials and workers.

Inexperienced finishers often ignore the process proper preparation surfaces before gluing wallpaper, believing that it is enough just to eliminate irregularities, but in reality everything is more complicated.

It is easy to understand whether it is necessary to prime the walls before wallpapering, evaluating the advantages that this procedure brings:

• walls treated with a primer do not support the spread of mold and mildew;
• impregnation provides better adhesion - the wallpaper will stick firmly to the wall;
• the treated surfaces have a higher moisture resistance, which also ensures a strong adhesion of the wallpaper to the wall even at high humidity;
• the primer levels small irregularities of the wall and eliminates excessive porosity of the surface.

Listed beneficial features primers make it possible to perform work on pasting walls with a higher quality, ensuring the durability of the coating, which is especially important when installing expensive products.

Types of primers and their characteristics

When choosing a certain type of primer, you should consider the material that is the basis of the product. Manufacturers have developed special formulations, which are optimally used for heavy and light materials. The composition of the soil is divided into several types:

• Acrylic. These impregnations are used for the treatment of concrete surfaces, drywall and wood. Great for living rooms, as they are odorless. The term of complete drying is up to 24 hours. Impregnations of this type are classified as universal.
• Alkyd. Used to prepare wooden and metal surfaces for subsequent painting or pasting. Dries quickly enough - up to 12 hours. Cannot be used to protect plastered walls.
• Glyphthalic. These impregnations are designed for metal products. It will take at least a day to dry.
• Perchlorovinyl. Prohibited for application in living rooms. Designed for coating mineral substrates and metal products. Drying time - up to 4 hours.
• Polyvinyl acetate. For high-quality impregnation under standard conditions, 30 minutes is enough. It is used to cover walls before gluing with PVA-based products.
• Polystyrene. Also not recommended for interior protection. Designed to protect wood and plaster walls.
• Phenolic. Designed to protect wood and metal elements.

Which is better to use depending on the surface

The undeniable advantages of impregnating walls using a primer prove that a primer under the wallpaper is necessary to obtain high-quality pasting. Which impregnation to choose depends not only on the composition of the roll material, but also on the type of surface.

handle concrete surfaces are best with universal acrylic or alkyd impregnations. These solutions, getting into the structure of concrete, create a slightly rough coating, which provides excellent adhesion when sticking both paper and non-woven wallpaper.

If the owners decide to paste over the ceiling, then these types of primer should also be applied to the surface of the floor slabs. Proper handling will not only increase adhesion, but also give water-repellent properties to the surface. H

apply impregnation on concrete, painted water-based paint, it is forbidden. To prepare such a wall, they clean off the old water-based emulsion, putty, level the base and only then treat it with a primer.

When to paste wooden walls, use primers for painting based on oil solutions. For processing plywood or fiberboard suitable acrylic primer.

For sheet materials (GVL, drywall, OSB), which are often used in new buildings, it is recommended to use universal acrylic solutions with an antiseptic. Such a base will be poorly impregnated due to the characteristics of the material, but on the treated surface it can be reliably placed vinyl wallpapers and glassware.

When choosing a primer, you should first of all focus on the material from which the wallpaper itself is made. So, the primer for liquid wallpaper can be either acrylic or quartz. For paper products, it is enough to treat the base with a latex composition. A special vinyl acetate primer has been developed for vinyl products.

Necessary materials and tools

To prime the walls before wallpapering, it is recommended to acquire some material base. You will need:

• primer suitable for the surface to be glued;
• a container for preparing a solution;
• a bath with a cuvette for rolling out a roller;
• brush 150 mm;
• a roller with a fur skin on the handle, 50-70 cm long;
• damp cloth to remove primer smudges.

The use of a stepladder or any other elevation is required only when processing corners at the top of the wall, which must be processed with a brush. Applying a primer to the main surface is easy to do with a roller on a long handle directly from the floor. Using the listed tools, it will be easy to do the soil protection of the base with your own hands.

Preparation of a mixture for priming

The primer before wallpapering is prepared using the instructions that the manufacturer places on the package.

Primer in factory packaging is most often supplied ready-made and already prepared for use. Mix this mixture well enough. If necessary (for the treatment of reinforced concrete foundations), the walls are primed for wallpaper with less concentrated compositions, for this, acrylic primers are diluted with water, and alkyd primers with white spirit.

Concentrated primers are adjusted to the desired consistency according to the manufacturer's recommendations.

To dilute the dry concentrate, you will need a deep container, a mixer and the solvent provided for in the instructions. The powder is poured into water and brought to a homogeneous state, a properly prepared primer should not have lumps.

Flow calculation

Primer consumption is affected by many factors, so you should not rely solely on the value of the norm per square meter recommended by the manufacturer. Increases cost:

• increased air temperature in the room;
• surface structure (degree of porosity).

When calculating the required volume of material, you should follow the manufacturer's recommendations, but there are average primer consumption rates for various surfaces:

• concrete surfaces - 350 g / m 2;
• drywall, GVL, OSB and GKL sheets - 120 g / m 2;
• plaster for painting - 100 g / m 2;
• wooden surfaces, including plywood - 120 g / m 2;
• metal surfaces - up to 120 g/m2.

The indicated standards are indicative indicators, but in the absence of accurate data, they can be used to determine the required amount of priming solution.

How to prime walls for wallpaper

Preparing the surface of the walls for pasting is quite simple. This task will be mastered by any beginner in construction, the main thing is to follow the recommended sequence of actions:

1. For successful treatment of walls with impregnation, it is recommended to ensure the temperature and humidity conditions in the room. Temperatures from +5 to +30°С, and humidity up to 75%, are allowed for work.
2. All tools are prepared before work begins.
3. Before priming, the walls should be cleaned of old wallpaper and paint. To do this, use a spatula and hot water. If the old coating is difficult to remove, you can use special solutions to remove wallpaper.
4. The cleaned surface is checked for cracks and irregularities, which are corrected with putty, followed by the application of leveling solutions.
5. In a bucket or other container, thoroughly mix (with a mixer or manually) ready-made solutions or prepare a primer according to the instructions. If it is planned to paste over the walls with wallpaper for painting, it is allowed to add appropriate pigment compositions to the soil, which will create a better base that does not contrast with the main color of the coating.
6. With the help of a brush, the finished solution is first treated with hard-to-reach places (corners, adjoining walls to the ceiling).
7. The main area is covered with a roller. For convenience, the primer is poured into a bath with a cuvette.
8. Re-treatment is possible after the final drying of the previous layer. For high-quality preparation for gluing, it is enough to process the surface twice.

How long does the primer dry

Drying period for different types material is different and can vary from half an hour to a day. Many finishers prefer not to wait due date and start work 20-30 minutes after applying the primer.

Such haste is not welcome, but in conditions where the room temperature is above + 25 ° C, the primer dries really quickly, which allows you to apply wallpaper paste without fear.

Under standard temperature and humidity conditions in the room, the drying times for different primers are as follows:

• Acrylic - up to 8 hours.
• Oil or contact - up to 24 hours.
• Alkyd - up to 12 hours.
• Special quick-drying - up to 7 hours.

It should be remembered that high temperature and low humidity reduce the drying time of the solution, and vice versa, in more humid conditions at temperatures below +16 ° C, the process of absorption and drying is slower.

How long can wallpaper be glued

In order to set the exact time frame for gluing the wallpaper after the primer, it is necessary to determine the drying time of the primed surface. Stick on roll materials It is possible only after the complete absorption of the last layer of the solution.

To ensure the completion of the polymerization process of the composition, it is imperative to wait at least a day after applying the finishing layer, this time is enough to calmly stick the wallpaper on the prepared walls of the apartment.