How to prepare walls for wallpapering? Wall treatment before wallpapering. Preparing walls for wallpaper, workflow Preparing concrete walls for wallpapering

Before pasting the walls with wallpaper, you should properly prepare the surface. If the concrete walls are even, then they do not require much effort to process. Minor irregularities are corrected with putty, and large distortions can be eliminated with drywall. It is necessary to become more familiar with the preparation of each of these surfaces.

Required Tools

Of the tools you need to have:

Putty knife.
roller.
Spray.
Bulgarian with a metal brush.
Brush.
Construction knife.
Container for putty kneading.

Spray and roller used to remove old wallpaper from walls. The remains of the canvas are cleaned spatula. The same applies to whitewash, plaster and other materials that are on the surface. The wall must be perfectly clean, free of dust, debris and loose plaster. If the wall was previously painted, then the old coating is removed using grinders with a metal brush.

For surface treatment primer is used roller(preferably with a long handle). With it, you can easily paint the surface under the ceiling. The liquid can be applied with a roller with a short handle or a wide brush. But in order to reach the high areas, it will take ladder. brush hard-to-reach places (corners, places around the door, windows) are processed.

Necessary materials

From the materials you will need:

Primer.
Putty (to eliminate minor irregularities).
Gypsum boards (to eliminate large irregularities).
Serpyanka.
PVA glue.

A primer is required for any type of surface. This material perfectly protects the walls from fungus and mold. This is especially true for those walls of the room that are in contact with the street.

If the concrete wall is perfectly flat, then it is enough to reprime it for preparation, then you can proceed to pasting.

The primer must be deep penetrating to ensure the strength of the surface layer of the wall and good adhesion of the canvas to it.

But if there are small differences (up to 3 mm), then plaster is used for leveling. Significant differences are eliminated by leveling plasterboard sheets. After leveling, it is also necessary to treat the wall with a special solution.

Preparing the plastered wall

If minor irregularities were found on the walls, then it is best to get rid of them by plastering. To do this, the entire surface of the wall is covered with a finishing putty. To eliminate differences of more than 3 mm, a thicker layer of gypsum putty is used, which is applied over the beacons.

After that, grouting and grinding of the surface is carried out. Such a perfectly flat wall will contribute to higher adhesion with wallpaper. But to increase adhesion, several more steps are required:

Use a brush to clean off the remaining dust and debris after sanding. You can also use a vacuum cleaner.
Moisten a cloth with water, twist well and lightly walk along the wall. Let her dry.
Carefully inspect the surface for defects.
Reprime the wall.

Debris should not remain on the surface, otherwise it may interfere with the quality setting of the canvas to the wall.

If after cleaning small defects were revealed, then they can be covered with putty. Do not leave a bump on the wall with the hope that the wallpaper will mask it. Under the canvas, this nuance is even more pronounced. After drying the wall, it must be re-primed.

If you plan to paste wallpaper on the old putty, then the wall must be inspected as carefully as possible. If the material holds firmly enough and its chips and damages are not visible, then you can safely proceed to cleaning from dirt and priming.

But there may be another option - a crack that is easy to get rid of. To do this, the gap is filled with cement mortar or ordinary tile adhesive. Then left to dry.

If the plaster has crumbled in places, then they must be cleaned with a metal brush and check whether the remaining putty is holding well. Additionally, you can tap on the surface to identify those areas of the plastered wall that do not adhere well. The holes are sealed with cement mortar, then covered with finishing putty. After that, the wall is cleaned of dust and primed.

Plasterboard wall preparation

Significant wall irregularities are eliminated by leveling with drywall, on which wallpaper is planned to be glued in the future. If there is no curvature of the walls, then there may be another option - installing a plasterboard partition. The first and second cases require proper surface preparation.

To do this, you need to perform several steps:

Primary surface primer.
Sewing seams.
Putty.
secondary primer.

The primary primer is necessary to protect the material from fungus and mold.

In this case, special attention must be paid to the joints of the material. After that, it takes time to dry. Therefore, you can do the work in the evening, and in the morning proceed to the next step.

Then the seams are processed using a special sickle tape. It is glued to the joints of the sheets with PVA glue, then covered with putty on top. After the seams have hardened, grouting is done with sandpaper.

You also need to pay attention to the drywall screws. Sometimes a small depression forms at the attachment points, which also needs to be covered with putty.

The next stage is the complete plastering of the walls. But why putty a plasterboard wall completely if it is already even?

Puttying a plasterboard wall is done for those reasons so that during subsequent cosmetic repairs, the old wallpaper from the surface should not be torn off along with the top layer of drywall.

Therefore, it is necessary to plaster the wall with a thin layer using a wide trowel, then grout and dust. After the secondary priming is carried out.

Concrete wall preparation

Often the concrete surface of the walls in houses is not perfectly smooth. Therefore, full plastering is used. But if the wall is visually even and there are no defects, then full plastering is not required. In this case, the surface is inspected for the presence of small defects: pits, cracks.

Such irregularities are covered with putty. You just need to make sure that a tubercle does not form in the places where the plaster is applied. Then sanding and cleaning from dust is performed. After that, the primer is performed.

On the video you can see all the stages of preparing the surface of the walls for wallpapering. Tips and tricks are provided to simplify the process.

Preparing the walls for wallpaper with your own hands. Step-by-step instruction

When the defects on the surface of the concrete, plaster and plasterboard walls are eliminated, the priming stage is performed immediately before gluing. Its implementation must be taken with full responsibility, otherwise all the work will go down the drain.

When applying a primer to a wall, you must adhere to the rules:

Use a large brush.
Apply in a thick layer.
When applying, make circular rubbing movements until a white foam forms.

The material is applied to the surface from the top corner. Care must be taken to ensure that all walls of the room remain covered with a primer.

Although the material is transparent, it leaves behind a wet trail that you can follow. After priming the surface, the room is left for a day to dry. Then you can start wallpapering the walls.

If you do not perform such preparation, then the wallpaper at the joints will begin to diverge or peel off in other places. The surface must be perfectly flat, which will provide better adhesion to the canvas. If the wall remains rough, then the wallpaper will adhere to it by 50%, which will also lead to further peeling off.

Small irregularities are eliminated by finishing putty. After that, the wall is sanded to smoothness. If the surface remains rough, the canvas will not hold up well.
If, after applying the putty, tubercles form, then they must be cleaned off with a spatula, otherwise this unevenness will protrude under the wallpaper. And after pasting, these places will be wiped faster.
Pay special attention to the corners of the room. They need to be leveled with metal corners that sit on putty. Otherwise, it can ruin the whole look.

If you plan to align the corners, then first you need to put putty on 2 walls opposite each other and let it dry. After that, the walls and corners adjacent to them are processed. Due to this, the spatula will not leave streaks on the part of the wall that has already dried.

If it is planned to paste the walls with light thin wallpaper on a concrete wall, gaps may be noticeable. Therefore, even if the surface is perfectly flat, it still needs to be applied with a thin layer of finishing putty, then sanded and cleaned of dust.

Proper preparation of the walls before wallpapering will ensure high-quality adhesion of the canvas to the wall. Priming prevents the penetration of moisture from the adhesive into the wall, which will also increase a stronger bond. You should also remove irregularities, if any, for which plastering or leveling with drywall is used.

There are no trifles in the design of the room where it is planned to live for a long time. The covering of the floor, ceiling and walls is thought out, all the pros and cons of this or that material are considered. Coatings are popular, even with artificial stone. But the championship in the number of rooms they have decorated is still behind the wallpaper.

Previously, walls were upholstered with wallpaper: they were made of leather and other materials. Modern flooring is made from vinyl, densified paper, and other materials. Some of them are washable.
We already wrote in a separate article about that, but before doing the calculations, it is recommended to prepare the walls.

Wallpapering is a simple and inexpensive way to update the walls of a room. If the surface is plastered and fairly even, this is not difficult, but if it has been previously painted, has significant flaws or traces of other coatings, serious pre-treatment will be required before wallpapering the walls. Consider the nuances and stages of the preparatory work carried out in this case.

Pasting the walls - an affordable way to refresh the repair

Wall preparation features

In order for the wallpaper to adhere firmly to the walls, the surface must be even, without flaky areas and cracks. Traditionally, they are glued on top of plaster, pre-treated with putty and primer. Regarding the admissibility of wallpapering painted walls, opinions differ, and this is not surprising, since not every paint can become a suitable base.

Oil coloring compositions that are in poor condition (peeling, blistering) are cleaned off completely. Water-based paints are also not suitable as a base due to their sensitivity to moisture. The most acceptable option in this situation is water-dispersion compositions.

Oil paint prone to flaking

Therefore, before deciding on wallpapering over paintwork, you need to know exactly its type. If there is no such information, it is determined visually and experimentally - oil paints have a smooth shiny surface, and water-based paints are more matte, in addition, they are washed out when in contact with water.

Water-dispersion and oil compositions, in turn, successfully pass the moisture resistance test, and you can distinguish them from each other by picking off a piece of coating with a spatula in an inconspicuous area. The former will hold tight and lag behind in small portions, while the latter will crumble in large pieces.

Important! Any coloring composition on the walls impairs adhesion to the wallpaper and increases the risk of premature peeling. Therefore, before gluing expensive materials, it is still recommended to clean the surface.

Getting rid of old wallpaper

If we are not talking about a new building, the walls, as a rule, have to be cleaned of previous coatings. Not all owners consider it necessary to remove old wallpaper, but preparing walls for gluing should begin with this.

Old wallpaper is easier to remove with a spatula

To get rid of the remnants of old material, you will need:

water;
foam roller or sponge;
putty knife;
sandpaper;
vinegar or other substance suitable for dissolving glue.

It is better to start wallpaper separation from the joints with window sills, radiators, sockets and the like, since in these places the coating usually holds less firmly. Poorly drained material should be moistened with a roller soaked in hot water.

Advice! Softening the wallpaper will be more effective if you add vinegar or a special glue solvent to the water.

Wet wallpaper is removed by prying with the sharp edge of the spatula. The remaining small particles of glue and coating are removed by sanding with sandpaper or by treating the surface with a drill with a grinding nozzle.

Preparation for wallpapering previously painted walls

As already mentioned, the preparation of painted walls for wallpapering depends on the condition and type of previously applied coating. Possible options are complete cleaning (preferred) and improving surface adhesion without removing the old paint.

Removing the old coating

Building hair dryer

Cleaning paint from the walls is a laborious and long process, but if the condition of the paint layer is unsatisfactory, it is better not to neglect this stage of work. For high-quality removal of the coating, you will have to use one or more of the auxiliary tools:

Sander. Using a brush attachment, it is convenient to clean flaky coatings, but there is also a minus - the formation of a large amount of dust. Therefore, before starting work, all items that may become dusty are removed from the room, or covered with a film. You should also close the door, open the windows and be sure to use goggles and a respirator.
Building hair dryer. With this method, the painted areas are heated until softened and removed with a spatula. The method is effective, but, due to the evaporation of harmful substances, unsafe for health. It is possible to clean walls under wallpaper using a building hair dryer only in a well-ventilated area.
Special paint remover. Good results are obtained by the complex use of mechanical means and washing. First, a chemical composition is applied to the walls with a roller or brush and left for several minutes (the recommended exposure time is indicated on the package). Then, the softened coating is removed with a metal brush or spatula. Finally, the walls are washed with water. In view of the toxicity of the composition, all work should be performed only in protective equipment and with open windows.

Chemicals quickly soften the coating

Further preparation of the walls for wallpaper consists in leveling and priming the surface. Suitable formulations and methods for their application will be discussed below.

Pasting walls coated with a water-dispersion composition

If the walls were painted with water-dispersion paint, a thorough cleaning can be dispensed with. In this case, the preparation consists of:

identification of problem areas (cracks, lagging paint), their stripping and filling;
surface degreasing;
applying the primer mixture.

Pay special attention to the adhesive composition. It is advisable to use ordinary wallpaper glue in half with PVA, applying it to the surface of the wallpaper and to the walls.

Advice! It is better to glue paper wallpapers on top of the paint, since moisture evaporates faster when the glue dries out of them and, therefore, has less effect on the paintwork.

Preparing a surface painted with oil paint

How to prepare the walls for wallpaper after painting with oil paint? If the coating is held securely, the main problem that prevents the adhesion of the wallpaper to the walls is that the surface is too smooth.

There are two ways to fix this:

The walls are cleaned with coarse sandpaper and coated with a primer mixed with PVA glue in a ratio of 1: 1.
Every 20 cm, the paint is removed from the wall surface with horizontal lines 5 cm wide. The resulting strips are filled with putty so that the surface is leveled.

When working with oil-painted surfaces, sanding is indispensable

These methods do not give a 100% guarantee of reliable fastening of the wallpaper, however, they increase the chances of success.

Putty uneven walls under the wallpaper

After removing the paint, surface irregularities may be detected. To eliminate them, you will need spatulas of different sizes, a building level, sandpaper and putty mixture for wallpaper. It is preferable to use polymer compositions, as they are moisture resistant and do not shrink.

Deep cracks are covered with starting putty

If a large number of chips and cracks are detected, the walls are completely leveled, and small defects can be covered up separately. To do this, the damaged areas are cleaned to a solid base and the starting putty is applied. Applying the composition in 2 layers helps to smooth out the bumpiness: one in the horizontal direction, and the second in the vertical direction. To make the surface perfectly smooth, after the starting layer has dried, it is covered with a finishing putty.

Preparation of concrete walls with exposed reinforcement for wallpaper requires a special approach. Aligning them, the reinforcing bars should be hidden under a thick layer of putty, otherwise traces of rust may appear on the surface of the new coating over time. It is more convenient to distribute the composition with a wide spatula (30-40 cm), holding it at an angle to the wall. After waiting for drying, the surface is cleaned with sandpaper, checked by the level and the top coat is applied.

Primer application

Another stage, without which the preparation of the walls before wallpapering cannot be considered complete - priming. If you managed to completely remove the old paint, a regular wall mix will work to improve surface adhesion. On top of painted surfaces, it is recommended to apply compositions specially designed for this, for example, VGT VD-AK-0301 or Neomid.

It is advisable to purchase a white primer, as it evens out the color and prevents the base from showing through the new coating. This is especially important for thin non-woven wallpaper.

White primer - the best solution for walls

The composition is applied to walls leveled and dust-free from top to bottom, evenly distributing it with a roller. If there are hard-to-reach areas (near the radiator, window sill, pipes), it is better to use a paint brush. To ensure high-quality adhesion of surfaces, the primer is applied twice, waiting for each layer to dry.

The time after which you can stick wallpaper varies depending on the composition of the primer mixture, temperature and humidity in the room. But for reliability, it is recommended to wait at least a day.

Conclusion

Preparing previously painted walls for wallpapering requires considerable effort and careful adherence to technology. Whether to glue the coating on top of the paint, thereby saving time, or to clean the walls completely - it's up to you. But remember that haste in this matter is not always appropriate, especially if you use expensive material and want it to serve you for a long time. Happy repair!

Preparing the walls for wallpaper is a mandatory procedure that is carried out in advance and eliminates many problems in the future. Many believe that this event can be carried out partially or completely excluded from finishing work, especially when using roll material. This is an erroneous opinion, because it is precisely the correctly performed preparation that is the key to obtaining a high-quality pasted surface.

Several decades ago, it was believed that preparing walls for wallpapering should be done only as a last resort. Pasting the walls with newspapers was widespread everywhere, due to which they tried to increase the adhesion of materials to each other. The lack of training at that time can be explained quite simply: there were no special products for such work on the construction market or it was very expensive. To date, the situation has changed radically, now there are many products for different stages of wall processing before wallpapering.

What is the purpose of wall preparation?

Improving the quality of gluing canvases to the surface. Walls, regardless of the material, have many pores. If they remain open, then numerous voids form under the applied coating, constituting up to 50% of the total area. This is clearly visible when dismantling old paper wallpapers - they are literally removed in strips. And this means that at any moment they could simply fall off. Also, the lack of adhesion leads to the appearance of a divergence of the seams between the strips.
Obtaining even, without depressions and bulges, surfaces. Various coatings are subjected to wallpapering, which do not always have the necessary evenness. But this finishing material is not a means of correcting wall defects. If you leave everything as it is, then any flaws will immediately be evident and the visual effect will be spoiled.
On a note! Some manufacturers claim that liquid wallpaper can hide many surface problems. In fact, they are only able to correct a slight difference in elevation. Vinyl varieties have a similar property.
Exclusion of the occurrence of fungus and mold. This is an eternal problem for plastered walls, it can occur on any basis. The reasons for the appearance of microorganisms are cracks and crevices, as well as increased humidity in the room.

It is imperative to properly prepare the walls for wallpapering, otherwise the resulting decorative coating will quickly lose its original appearance.

Stages of preparation

Preparation is a complex of interrelated activities, each of which plays a specific role. All procedures are carried out in strict sequence.

So, before sticking wallpaper you need:

If there is an old decorative layer, completely remove it and clean the surface. Assess the general condition of the walls.
If the work is carried out on the old base, then the existing delaminations are removed, after which the sections are primed.
The surface is covered with plaster to correct significant irregularities. For small imperfections, puttying is performed.
One or two layers of primer are applied.

The main stages of wall preparation: 1 - cleaning from the old finish; 2 - base primer; 3 - surface leveling

Preparing for pasting is a fairly simple event, but each stage has its own subtleties and features.

Removing the old layer

If the work is carried out in a habitable house or apartment, then the preparation begins with the sequential removal of the previously applied decorative layer. As a facing material, paint or wallpaper most often acts. The removal of each coating has its own characteristics.

Removing the paintwork

It should be understood that any paint needs to be completely removed, even a simple whitewash is washed off entirely.

Procedure:

Surface cleaning with a grinder

On a note! This is a rather time-consuming process, so you need to be patient.

Removing old wallpaper

How to prepare walls for wallpapering with a paper layer? Removing such an old coating is much easier. To work, you will need a spatula and a spray bottle with warm water.

The dismantling process is as follows:

Initially, you need to pry off the layer in some places, if there are voids, the material will be removed in layers.
The remaining areas are sprayed with water until completely wet.
Then, with a simple spatula, paper residues are removed with sharp movements from the bottom up or diagonally.

This principle of operation is suitable for all types of wallpaper, including liquid ones.

Surface condition assessment

Due to the fact that the subsequent steps depend on the correct assessment of the condition of the coating, this process is carried out with the utmost care. The wall is tapped over the entire area: if voids are found, then it is recommended to break them. In the presence of defects that make up more than 40% of the surface, the layer is removed completely, to the base. It is important to make sure that there is no mold or mildew.

In case of minor damage, the cracks are covered up, with a slight curvature, puttying is performed. If the defects are numerous and the old coating has been completely dismantled, the walls must be plastered and, if necessary, a finishing putty layer should be laid.

On a note! These activities take a significant amount of time, but they allow you to avoid further problems.

First priming

Preparation of walls for wallpapering includes two stages of priming. There are conditions that require the correct execution of this sequence.

The first layer is applied after the surface has been cleaned and all existing cracks have been patched. This process is necessary so that the composition for covering a few defects is firmly held.
When the plaster is completely removed, the base is covered with a primer in order to increase the adhesion of the newly applied coating. But it must be borne in mind that with this option, the second priming is carried out in two layers.
Be sure to wait until the surface is completely dry.

Often little attention is paid to this, but it will ensure the reliability of fixation.

Plastering with significant defects

Plaster is used to repair significant defects or create a starting coating for subsequent puttying.

Action algorithm:

The required amount of the mixture is prepared, the proportions and technology depend on the selected composition. Each manufacturer supplies their products with instructions.
Due to the fact that the solution serves to correct significant defects, beacons are pre-installed.
The mixture is thrown onto the wall with a spatula and leveled with a rule.
After drying, the beacons are removed, and the resulting traces are covered up.

The resulting coating can play the role of a base, but due to the roughness of the composition, only non-woven and vinyl material options are suitable for gluing.

Puttying with small imperfections

Puttying is considered a mandatory procedure, but in reality, it is advisable to carry out this event to correct minor flaws or distortions. If the old coating has only small cracks, then it will be enough to cover them up.

The putty is applied as follows:

The putty composition is mixed. It is important to consider that it dries out rather quickly, so it is recommended to cook it for 30-40 minutes of work.
With a wide spatula, the solution is applied to the surface and distributed over the base with uniform movements.
There is no need to rub the coating, so only the initial alignment is performed.

Preparing the walls for wallpapering with your own hands is considered almost complete. The final step will be priming, which is done after the surface has completely dried.

Working with different wall materials

When performing finishing work, it must be taken into account that the walls can have different surfaces, each of which has its own characteristics.

concrete foundations

How to properly prepare a concrete wall for wallpapering? It must be remembered that this process is considered the most laborious.

The surface is cleaned from dust and dirt. A layer of deep penetration primer is applied. If it is absorbed quickly enough, it is recommended to repeat the process.
A plaster mortar is being prepared, it will serve as a starter. The mixture should be applied in compliance with all procedures.
If a rough composition was used for work, it is recommended to cover the surface with putty.
On a note! Many craftsmen note that to obtain the desired result, the plastered coating must be carefully sanded.
Priming completes the process, it is important to apply at least two coats.

The preparation of concrete walls for wallpapering is considered complete.

Plastered coatings

To begin with, the coverage is evaluated, further actions are determined by its condition:

If the surface after cleaning has sufficient evenness, but there are small gaps, then you need to expand the cracks and cover them with putty, and then prime them.
If there are small gaps on the coating, but there are noticeable curvatures in height, then the work consists in lining with putty. It will level the base and correct minor defects. The result is fixed with the help of soil.
The most time-consuming is the option in which the coating has numerous defects. This means the complete removal of the plastered layer and the application of a new one.

On a note! In new buildings, finishing is carried out according to the principle of "screed and plaster", therefore, in such premises it is advisable to check the quality of the work performed. There are situations when everything is done wrong, this involves a complete reconstruction.

Plasterboard surfaces

When deciding how to properly prepare drywall walls for wallpapering, it is necessary to evaluate the fixing of the GCR boards. If the installation work was carried out in accordance with all the rules, then further manipulations are carried out according to the following scheme:

Thus, the surface is completely prepared. Finishing work can be done after the walls have dried.

Wallpaper is the most popular type of finishing materials. A huge variety of colors and patterns, a wide range of prices make the described material the most in demand in the construction market.
But you need to know how to properly prepare the walls for wallpapering, so that the most expensive wallpaper looks beautiful on the walls if it is properly executed for pasting.
Let's say right away that preparing the surface for wallpapering is not difficult, but it requires certain knowledge, skills and special tools. A beginner can easily cope with such a task if he carefully reads the proposed article.

Where to start repair

Any work begins with the preparation process. You need to purchase the material itself and related products, tools and fixtures.

About we have repeatedly told on the pages of our site.

Of the tools you will need:

a mandrel for fixing an abrasive or a grinding block;
abrasive material;
sanding sponges for processing hard-to-reach places.

Grinding mesh can be used as an abrasive material, but it is cheaper to use sandpaper. The quality of work will not suffer from this.
The use of a grinding mesh makes work more comfortable, since the mesh is not clogged with debris and dust during operation. But the right choice of paper gives very good results. In addition, it is much cheaper than the grid.

The abrasive material is marked on the reverse side. The numbers 80…200 characterize the coarse-grained structure of the abrasive, and the numbers 250…2500 indicate the fine-grained structure of the emery material.

Sanding sponges are available with cut corners for easy processing of hard-to-reach places.

Of the devices you will need:

ladder or sturdy table;
spotlight or lighting device;
spatulas;
rule or level.

Always remember safety

Any work should bring joy and not have a harmful effect on human health. Preparing walls for wallpapering is a messy, dusty process.
You can not do without goggles, a respirator or a gauze bandage, a headgear.

Removing the old coating
If you are going to glue wallpaper in a new room, then the brick surface will need to be sanded and primed.
The drywall surface also requires priming.

A more laborious process awaits you if you are going to re-paste the wallpaper or stick it on a painted or wooden surface.

You will need to prepare the surface by cleaning it of old wallpaper, paint and nails. The wooden wall will have to be plastered or sheathed with drywall.

Everything in order
Any surface is freed from the old coating, dried and primed. If the surface is very uneven, it is plastered.
After drying for a day, the surface is primed again. The primer is applied after each layer of plaster or putty.

Rule 1
For a high-quality surface that can last for decades, be sure to use all consumables from the same manufacturer.

If you bought plaster from a certain manufacturer, then putty and primer should preferably be from this manufacturer.

More about removing old wallpapers

To remove old wallpaper, you can use different methods.
The simplest and most reliable way is to moisten the surface with a warm cleaning solution. The solution is applied to paper wallpaper with a sponge, roller, sprayers. After a pause of 15 minutes, you can carefully remove lagging and swollen wallpaper with a spatula.
This method is good for removing thin paper wallpapers.

Do not forget that multilayer wallpapers cannot be removed in this way. They are removed by using a steam generator or by stroking with a hot iron through a damp cloth.
Multi-layer wallpapers include non-woven, vinyl, washable wallpapers, since they have an upper protective layer that prevents water from entering the surface.

About the most important

To obtain a high-quality surface for wallpapering, it is necessary to perform finishing grinding.
To prepare the walls for wallpapering, follow the basic steps:

Install the correct side lighting. The light source must remain in one place throughout the work.
Grind the walls from top to bottom in a circular motion of the tool.
Treat strips no wider than 1 meter. Having passed the strip to the very bottom, grind the next strip of the same width.
Control the surface through the light using a level or rule applied to the surface to be treated.

Never attempt to resurface pits or depressions. You will only spoil the surface. It is better to putty the identified defect. Followed by surface cleaning

When preparing walls for wallpaper, small scratches are allowed on the polished surface.

A few words about process mechanization

The use of mechanical devices is advisable for plastering, rough grinding.

At the finishing stage, it is best for a beginner to use hand tools. It is both more reliable and cheaper, although longer in time. For more advanced builders, we recommend using eccentric or orbital sanders.

Preparing the wall surface for wallpapering

You have completed the preliminary steps - removed the old coating. Where necessary, a layer of plaster was applied.
Let's talk right away. Plaster should only be used on a very uneven wall or on a brick or wooden base.
By the way, plaster is applied to a wooden base on a pre-nailed shingle.
Before applying the putty, a layer of primer is applied to the thoroughly dried plaster layer.

Rule 2
The primer is applied to a completely dry layer of plaster or putty.

About the rules for applying plaster or putty when leveling walls, we have repeatedly written in detail on the pages of our website.

Useful tips for beginners when preparing walls for wallpapering

When wallpapering in a damp room, treat the surface with an antiseptic.
With a significant curvature of the walls, apply a layer of plaster.
Apply putty on drywall or pre-plastered surfaces.
Sanding is necessary on the surface under a thin wallpaper or paint layer.
Grinding is carried out with circular movements of the skin grater, without pressing hard on the tool.
Start sanding with a coarse abrasive. If deep scratches remain, select a finer abrasive structure.
In hard-to-reach places, use special grinding sponges. But you can use the old-fashioned method by folding sandpaper in several layers, putting rags or a soft washcloth inside.
Surface quality control is carried out by applying a level plane or rule to the ground surface.
After sanding, be sure to thoroughly clean the surface of the resulting dust.
Apply a layer of primer to the dried surface. Porous surfaces will require several coats of primer.

As a primer for walls when pasting wallpaper, it is ideal to use wallpaper paste. The dilution ratio is written on the glue packaging.

Rule 3
How to properly prepare the walls for wallpapering. For coarse grinding, sandpaper No. 100 ... 220 is used, and fine grinding is carried out with abrasive material No. 250-280.

Marking on the sanding grid and sandpaper is applied on the reverse side of the material.

Conclusion:

prepare the surface for wallpapering is available to any person who has read the proposed instructions;
you can get a high-quality surface using related materials from one manufacturer;
strictly observe the sequence of work on preparing the walls for wallpapering;
do not rush and do not stop halfway.

Our article and video will help you understand

It’s even scary to remember all the subtleties of wallpapering that our parents had to deal with - as a rule, at that time the walls were decorated without prior preparation. The maximum that was done to improve the quality of wallpaper stickers was the preliminary “leveling” of the walls with newspapers, in this way the roughness of the plastered surfaces was reduced and premature peeling of the wallpaper was prevented. Today, the preparation of walls for wallpapering is almost of paramount importance - and no wonder, because a lot depends on this process, and first of all, how long such a wall covering will last. In this article, together with the site stroisovety.org, we will study in detail the technology of preparing walls for pasting them with wallpaper and learn how to do it with our own hands.

how to prepare walls for wallpaper photo

How to prepare walls for wallpaper photo

Preparing walls for wallpapering: four reasons why you need to do it

There are a lot of reasons not to ignore the process of preparing walls for wallpaper - listing them all is simply unrealistic. The main ones are the following.

Firstly, this is the most important thing - the quality of gluing the canvases. It has already been said above that the porous surface is simply not able to hold the wallpaper on itself for a long time. The reason for this is simple - where there is time, the base of the wallpaper is not glued to the wall. As a result, only 50 percent of the canvases are glued - this is easy to verify when faced with the dismantling of wallpaper glued to an unprepared wall. They come off as if by magic. By the way, for the same reason, already during the first month, the seams between the individual strips of wallpaper begin to open. It should be remembered that earlier almost all wallpapers were glued with an overlap - it turned out that one strip held the other, but now they are glued joint to joint.

wall preparation before wallpapering

Wall preparation before wallpapering

Secondly, it is the unevenness of the walls. If one of you thinks that they will hide under the wallpaper, I hasten to assure you of the opposite - even the most dense and thick wallpaper is not able to hide bumps and pits. It's all about lighting - even if such flaws are not visible when the chandelier is on, they will definitely appear in daylight. Or vice versa, here how the card will fall.

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priming walls before wallpapering

Priming walls before wallpapering

Fourthly, adhesion (the ability of materials to combine with foreign substances), simply put, this property of materials is fully responsible for the duration of the wallpaper on the walls.

These reasons are quite enough so that the preparation of walls for wallpaper is not ignored. Many, of course, can argue with these arguments and oppose them with their arguments, they say, all the same, the wallpaper is re-pasted every 3-5 years. I will answer simply - that's why they are re-glued, because the preparation of the walls for wallpapering has not been completed. In addition, the wallpaper itself does not differ in quality and quickly falls into decay. Expensive wallpapers with proper gluing can last at least ten years or until they get bored.

Preparing walls for wallpapering

Preparing walls for wallpapering photo

How to prepare walls for wallpaper: work sequence

We will not beat around the bush, but consider how the walls are prepared before wallpapering, as they say, point by point.

Wall primer. This operation is necessary for three reasons.

Firstly, a deep penetration primer penetrates the wall and holds its surface layer together, thereby preventing small particles of plaster or concrete from peeling off.

Secondly, the primer composition deprives the wall of the ability to intensively absorb moisture, thereby increasing the drying time of subsequently applied putties, which affects the quality of the coating. It should be understood that the rapid drying of all mortars does not lead to anything good - at least the surface will crack.

Thirdly, the primer simply removes dust - and, as you know, nothing sticks to it. The primer is applied with a large brush or brush - it must be rubbed into the surface until a white foam is obtained. Before moving on to the next step, which involves preparing the walls for wallpapering, you need to wait for the walls to dry completely.

why prime the walls

Why prime the walls

Sealing of cracks and potholes. You should not hope that the subsequent puttying of the walls will solve the problem with cracks and potholes - it will hide them superficially, and these defects will certainly return in the very near future. The crack should be enlarged to about a centimeter width, after which they should be opened with a primer and sealed with cement mortar, and preferably with glue for tiles.

It should be understood that cracks in the plaster do not just appear - this is a sure sign that in this place the plaster has lagged behind the base of the wall. You may have to work hard with a hammer and remove the falling plaster. This is where problems can arise - old plaster can crumble in large pieces, and then preparing the walls for wallpapering will result in a major overhaul, which involves leveling the walls with plaster again.

But let's get back to our wallpaper, or rather, to preparing the base for gluing them - we are waiting for the complete drying of the repaired areas, we again prime them with high quality and proceed to the next stage of work.

patching cracks before wallpapering

Sealing cracks before wallpapering photo

Wall putty. You can’t do without it - you will have to apply at least a thin layer of putty on the walls. And the point here is not at all the leveling of the surface, although this factor is also important. Puttying is necessary mainly in order to reduce the surface roughness and increase its bonding area.

Ideally, of course, it is necessary to level the walls, but in most cases this is practically unattainable for non-professionals, so the task is set as follows - with the help of putty, you just need to smooth out all the bumps. It should be understood that the finishing putty is applied only in thin layers, since large ones will crack as they dry.

Irregularities are eliminated in several passes - to make the wall even, professional plasterers sometimes have to putty the wall three, four, or even five times. After the putty has completely dried, all flaws in the form of tubercles and sagging are mechanically removed from the surface of the walls - an abrasive mesh is used for this purpose. In principle, it is possible to remove small protruding putty deposits with a spatula.

do-it-yourself wall preparation for wallpaper photo

Preparing walls for wallpaper with your own hands photo

Well, the last stage of work, which involves the preparation of concrete walls for wallpaper, is again their primer. I want to note that in order to achieve high quality of any work related to gluing, puttying, plastering and other similar works, a primer is almost always performed. To exaggerate, it looks like this - took a step, primed, took the second step, primed again, etc.

Each layer of the cake applied to the wall must be primed without fail. The same applies to painted surfaces, which are quite common in old apartments - only in this case you need to use a primer called "betonokontakt" or the like.

preparation of concrete walls for wallpaper primer

Preparation of concrete walls for wallpaper: primer

That seems to be all - after priming the putty walls, which reduces their ability to quickly absorb glue and removes dust residues, you can proceed to the direct wallpapering, but first, of course, you must wait for the primer to dry completely. Preparing the walls for wallpapering ensures that the new coating will not only have an attractive appearance, but will also serve you for a long time.