Is it possible to paste wallpaper on previously painted walls: how to paste it correctly, what glue and wallpaper to choose, how long the surface dries. Wallpapering over oil paint: is it possible? Is it possible to glue wallpaper on alkyd paint

08.11.2019

Most wanted finishing material for walls - it's wallpaper. They have a lower price compared to others. Working with them is easy and simple. And of course, they benefit from a rich choice of colors, designs and materials from which they are made.

Wallpaper material is not always bought in order to fulfill overhaul with new design. Very often, consumers want to simply freshen up a room without spending a lot of effort. In many apartments, especially in kitchens, the walls were previously covered with paint. And now the question arises: is it possible to paste wallpaper on it? Of course, according to technology, they should be glued to a base leveled with plaster or to drywall. But as practice shows, wallpapering on a painted surface is quite successful. The challenge is just how to make them last longer.

What to pay attention to

To get a positive result when gluing wallpaper on painted walls, you should first take into account a few points:

Features of different types of paint

Surface treatment with different types paint differs in its technology, and, consequently, the result of the work. Therefore, it is very important to determine which one was applied to the wall earlier. She happens:

A prerequisite for surface preparation is the determination of the type of paint. To do this, we begin to clear the walls of it. If removed in small layers, then oil-based paint was applied. Acrylic is very difficult to remove, so during this process only small chips will form under the spatula. After determining, we proceed to prepare the surface for gluing.

Wall with acrylic paint

A plane with acrylic paint applied to it is prepared as follows. A thorough priming is carried out with a solution, which is a solvent with the addition of a primer. Such a mixture with the help of a solvent forms small depressions on the surface. This will help improve the adhesion of the wallpaper material.

After the applied layer has dried well, the process is repeated. The second is applied only with a primer. Finishing layer- this is the application of well-diluted wallpaper glue to the walls.

Surface with oil based paint

Preparing substrates with oil paint can be prepared in two ways:

Wallpaper and water-based paint

When deciding to wallpaper a wall with water-based paint applied to it, you should first perform several studies. First of all, you should check the strength of its hitch. To do this, apply ordinary water to the walls with a paint brush. If, after getting wet, the painted layer does not swell, then, in principle, wallpaper can be glued onto such a plane.

Otherwise, it will have to be washed off. When deciding to paste wallpaper on a painted wall, we first carry out work on its preparation. Water-based paint attracts particles of dust and grease. Therefore, on initial stage wash the walls well with clean water. Then we examine the base for unevenness. If there are any, then we putty them. And the final moment - priming the walls. This process cannot be skipped, even for the sake of economy. Only thanks to priming, it is possible to ensure the quality of pasting painted walls with wallpaper.

Wallpapering concrete walls

Since we are talking about wallpapering non-standard surfaces, let's see if it is possible to paste over non-plastered concrete walls. After all concrete surfaces have such a feature as the presence of ruts and tubercles.

You can try, but first we carry out certain preparations. To begin with, we will process the concrete walls with bricks to remove all possible bulges. Then we carefully carry out grinding with sandpaper and clean the walls from the dusty layer. We carry out a primer of concrete, after which we paste over with wallpaper. But it’s better, after all, to plaster at least once to level the base.

After completing all the preparatory work, you can begin the process of pasting the walls. To achieve a positive result, you should follow these recommendations:

By following these simple rules, you can paste wallpaper and quickly update the design of the room.

Is it possible to glue photo wallpaper on water-based paint explained in the following video:

As you know, before applying a new . This rule also applies to wallpaper, but what if the walls are covered with paint, which is not so easy to get rid of? In this case, you can stick the canvases directly on the paint, however, in order to get a high-quality result, it is necessary to follow a certain technology, which we will consider below.

General information

Many home craftsmen doubt whether it is possible to glue wallpaper on painted walls. I must say that these doubts are quite justified, since it is really not always possible to perform this procedure. It all depends on the type of paintwork.

If the old finish is made with an oily coloring composition, then it is advisable to remove it, since this material tends to peel off on its own. In addition, it is difficult to ensure good adhesion of the adhesive.

Water-based paint must also be removed, as it is susceptible to moisture. As a result, after processing the base with wallpaper glue, it will begin to lag behind. The best option, in which gluing over the paintwork is allowed, are walls coated with a water-dispersion composition.

Therefore, before gluing wallpaper on painted walls, you need to find out what type paintwork material they are covered.

To do this, follow these steps:

First of all, you need to wipe the painted surface with a wet cloth. If foam appears on it, and the rag itself is slightly stained, it means that a water-based composition was used for finishing, which can be washed off warm water.
If the material is not susceptible to moisture, then it must be tried. If the coating falls off in pieces, then the paintwork was used. If, on the contrary, the material holds on quite tightly and lags behind in small parts, then water-dispersion paint was used.

Note! Wallpapering over paint always comes with some risk. Therefore, if the price of the material is high, it is still better to spend extra time and effort to stick it on a well-prepared base.

Sticking

Coating adhesion test

How to determine the type of paintwork, we examined. However, in order to finally decide whether it is possible to glue wallpaper on painted walls, you should check how firmly the old material holds. To do this, you can use construction tape.

Having pasted a small piece of tape on the painted surface, it should be torn off with a sharp movement. If pieces of paint and varnish material remain on the adhesive tape, then the paint will have to be removed. If the coating was not damaged as a result of such a check, then you can start preparing the base for further painting with your own hands.

Note! Do not finish damp or moldy walls. In this case, it is necessary to tear off the old materials and treat the base with a special compound. If necessary, the wall must be insulated.

Oil paint preparation

I must say that in the case of good adhesion of oil paint to the base, you can glue the wallpaper on top of it. The only thing is that you have to carefully prepare the surface.

The instruction looks like this:

First of all, the surface must be sanded to make it matte.. This will improve the adhesion of materials.
Then the base must be cleaned of dust. It is best to wash the surface with water and dry.
After that, the base is treated with a special adhesive primer.. The composition is applied with a paint roller in an even layer over the entire surface of the walls. After the first layer has dried, the surface must be primed again.
Further steps are the same as for ordinary gluing, except that wallpaper glue should be mixed with PVA glue in a ratio of 2: 1. Such a composition will ensure high-quality gluing of the canvases to the base.

Note! This technology is not suitable for gluing vinyl wallpaper, since the level of adhesion may not be enough to hold heavy webs.

In the photo - the treatment of the painted surface

Preparation of water-dispersion paint

When sticking, as a rule, there is no need to rub it with sandpaper, since the surface itself is matte. The only thing is that before sticking wallpaper on painted walls, they need to be treated with an adhesive primer.

The work is performed in the following sequence:

Previously, the walls are washed from various contaminants and dried.
Then the surface is covered with two layers of primer. The second layer can be applied after the base has completely dried.
Then, before gluing, a layer of highly diluted adhesive is applied to the primed base.
After the base has dried, you can start gluing the canvases. The further procedure is carried out in the same way as when working with a conventional unpainted surface.

The vast majority of professionals prefer to stick tapestries on cleaned and primed walls, strictly following the technology. Homeowners doing their own renovations want to avoid the time-consuming and dusty job of removing paint from the base of the walls, preferring to stick the wallpaper to the paint layer.

Practice shows that such experiments often turn out to be successful - the trellis canvases are perfectly kept on the wall until the next repair. The whole question is how to glue wallpaper on painted walls so that they do not begin to fall off before changing the design of the apartment.

What are the pros and cons of such a solution

In reference books, methodological and educational literature, the decision to paste over the paint is recognized as unambiguously unsuccessful - it has only minuses. However, it is difficult to agree with such an opinion. The method has advantages, and weighty ones:

The room and the apartment as a whole avoid a very unpleasant moment - dusting during paint removal;
Reduced repair time - paint removal takes more than one day;
The labor intensity of work is reduced;
Money is saved - there is no need to pay for cleaning the wall from the previous type of finish (if a team was hired) or buy expensive washes.

Among the shortcomings, experts note:

Lack of good adhesion (adhesion) of the trellis to the wall. There are two negative points here. Firstly, in most cases, the paint itself does not adhere well to the wall surface, and secondly, wallpaper glue is not intended to adhere to the paint layer;
The property of a water-based emulsion to absorb water, as a result of which it changes its structure (deforms) - leads to the destruction of the adhesive and the backlog of the wallpaper from the wall surface;
Lack of vapor permeability in oil paints - fungus and mold appear;
The smooth surface of enamels and oil paints does not create the necessary adhesion to wallpaper glue - the tapestries fall off rather quickly.

How to glue wallpaper on paint - analysis of the nuances

To achieve an acceptable result when sticking wallpaper on paint is possible only if a few simple rules are followed:

determine the type of paint;
prepare the wall surface for tapestries: remove the paint layer from problem areas (loose, poorly adhered, along cracks), repair the wall, remove mold and fungus;
without fail, prepare the top layer of the paintwork for good adhesion to the wallpaper glue.

Determining the type and type of paint

Most important point in pasting by paint - correctly determine its type and type. The degree of adhesion of the trellis with the paint layer, and the level of its adhesion to the wall, and in general, the service life of such a finish depend on this.

There are several types of paint:

emulsion;
alkyd;
silicate.

In turn, each type has several types of paints and varnishes.

Emulsion paint can be water-based, acrylic, water-dispersion, polyvinyl acetate, latex, and silicone-based. In alkyd paint materials, oil and enamel types are distinguished. Silicate paints are water-soluble and have no varieties.

There are several ways to determine the type and type of paint:

Whitewashing is easily determined by the contact method - it is enough to run your hand over it. The hand became white, which means we have chalk or lime in front of us.
The water-based emulsion under the influence of water (run along the wall with a wet sponge) bubbles and is washed off.
The enamel on the wall can be immediately identified visually - it has a glossy sheen.
Oil paint after many years of operation is similar to enamel - it is difficult to visually determine. But this is not necessary - the technology for pasting with tapestries for these paints is the same.
Acrylic must be distinguished from both water-based paint and oil paint. In the first case, such paint does not change its shade when moistened (does not get wet). In the second, you can determine by smell - the smell of drying oil does not disappear from oil paint over the years. In extreme cases, you can check with a spatula - try to remove a small paint layer from the wall. Oil paint falls off quite easily in pieces, and acrylic is hard to remove, with a small film.

Preparatory work

The process of pasting walls over paint begins with a standard procedure: you need to make sure that the wallpaper will stick. To do this, ordinary (not masking) tape is glued to the wall. If, when it is removed with a sharp jerk, the adhesive surface is clean, you can carry out preparatory work for pasting with tapestries (if not, the paint layer will have to be removed).

The second way is to apply wallpaper paste to a small section of the wall with a brush and let it dry completely. If it is possible to easily separate the adhesive film from the paint with a spatula, it is completely removed from the entire surface. If not, you can safely glue.

To prepare the walls for a new finishing material, you must have at hand:

ladder;
sandpaper;
bucket with water;
sponge
primer;
construction tape;
putty;
putty knife.

Step by step, the entire preparatory process is as follows:

The walls are inspected to identify problem areas: cracks, lagging (swollen) paint, mold and fungus;
Cracks are repaired with a repair mortar (the process is described in detail in the work ""), loose layers of paint are removed with a spatula or a metal brush, mold is washed off with special solutions (as an option, the wall in this place is cleaned of paint);
Bald spots and patched cracks are processed with sandpaper, primed, and then puttied. If you skip this operation, there will be air cavities between the wallpaper and the wall, which will certainly lead to lagging wallpaper sheets;
The wall is washed with clean warm water - dust and dirt are removed. If necessary, remove soot and fat, and this must be done, either household chemicals are used (“Silit”, “Komet”, “Shumanit”, “Sif”, etc.), or folk remedies(mustard powder, soap-soda solution, vegetable oil with soda, alcohol-acetic solution, etc.);
Places with mold are treated with antifungal drugs.

After that, technologies for a specific type of paint are applied. Considering that approximately 99% of the walls are painted with oil, water-based (water-dispersion, which for many consumers is the same as water-based), acrylic, enamel and whitewash, we will consider the possibilities of wallpapering each of them in more detail.

Methods for gluing tapestries to paint

For oil

There is an opinion among experts that oil paint wallpaper does not stick, it must be removed. Practice actively refutes this. Let's try to figure out how to stick wallpaper on oil paint in such a way that it "isn't embarrassing": it lasts a long time, looks beautiful.

The problem with oil paint is its smooth surface (she clings tenaciously to the wall, so there are no difficulties on this side), for which the glue does not want to cling. Therefore, all preparation comes down to one thing: to ensure the adhesion of the wallpaper paste to the painted surface. There are two ways to do this.

The wall is matted - a rough surface is created with a large sandpaper. After that, the paint is primed with a primer solution (the primer is selected for the type of walls, which can be read about in the work "") and PVA in a 1: 1 ratio.
With a chisel on the wall at a distance of 20 cm from each other, vertical stripes 5 cm wide are made (paint is removed). Applying a primer to paint-free places first, and then putty, allows not only to level the walls, but also to create areas ideal for adhesion. This method is not as effective as the first one, but it has the right to life.

For water-based

You can also stick tapestries on water-based paint in two ways:

Rinse off old paint with warm water, and then glue;
Treat the paint with a mixture of primer and thinner in a 1:1 ratio. The next coat of clean primer can be applied only after the first one is completely dry. As a result of this operation, the solvent partially corrodes the paint layer, allowing the primer to penetrate the wall structure, creating a base that provides reliable adhesion of the wallpaper to the wall.

On acrylic

Wallpaper is glued to acrylic paint after the surface of the walls has been treated with a solution of primer and solvent in a ratio of 1: 1, i.e. this is one in one second option for gluing tapestries on a water-based emulsion. The only difference is that some specialists additionally process the wall with liquid wallpaper glue, the one that will be used to glue the tapestries.

For whitewash and enamel

You can glue wallpaper on an enamel surface using the same technologies as on oil paints: make stripes or sandpaper - an absolute coincidence.

A more difficult option is whitewashing, since such painting does not withstand even minimal loads. Consider how to glue wallpaper on chalk or lime paint. As in the previous cases, there are two options.

The whitewash is removed completely with a soapy solution: it is first wetted and then scraped off the wall with a spatula. In conclusion, the wall is washed with clean warm water. The quality of work is checked after the surface of the wall is completely dry - just move your hand. If it gets dirty, the whole operation must be repeated - even a small area with the remaining lime or chalk will cross out all the work of changing the lining.
Treat the wall 2 times with a whitewash primer deep penetration. The second layer is applied only after the first has dried. On the dried second layer, a third layer of wallpaper paste is applied, prepared using a special technology - only 20% of water and no more. After this layer has dried, you can glue it.

Above are ways to prepare painted walls for wallpapering. The pasting technology itself is described in detail in the materials "" and "".

Is there a difference whether to glue on old or new paint

There is not much difference whether the old or fresh coat of paint is on the wall. When properly carried out preparatory work, the wallpaper will stick to the wall equally firmly. There are only nuances in the fact that on the old paint there is more dirt and bald spots with microcracks that need to be repaired.

Are there any nuances of pasting painted walls depending on the type of wallpaper

Wallpapers are light and heavy, dense and translucent. All this requires a special approach to the preparation of painted walls for gluing tapestries. For example, light non-woven wallpaper can be glued to almost all types of paint. Heavy vinyl should not be stuck on oil paint and enamel if the preparation has been reduced to cutting strips. Here you need to carefully work with grainy sandpaper and create a rough surface.

Before sticking translucent wallpaper, a brightly colored wall must be muffled with a special white primer or such tapestries should be abandoned.

Is it possible to glue liquid wallpaper on paint

Liquid wallpaper that has gained popularity can be applied to a painted wall. The only caveat: the process of painting the existing paint with a white water-based emulsion is added - otherwise the wall will either shine through the liquid tapestries, or muffle their colors, changing the color beyond recognition.

Conclusion

Only practice will resolve the constant debate whether it is possible to glue wallpaper on painted walls. So far, it has been experimentally established:

tapestries can be glued to the paint;
before gluing, the paint layer is additionally processed with sandpaper or special solutions;
you can glue all types of tapestries, including liquid ones;
the service life of the paint practically does not affect the technology of pasting walls.

Very often, when deciding to glue new wallpaper on the walls, there is a problem in preparing the walls for repairs. The main problem is the previous wall decoration with paint. In this case, a serious question arises about the possibility of wallpapering painted walls. It is not necessary to peel at all old paint. Although this option is associated with many fears and difficulties. Unintended consequences can be expected. But a successful resolution of the issue is possible if the instructions are followed correctly.

It is possible and quite successful to paste wallpaper on painted walls, but this is possible only with the right and scrupulous approach to business. The first task will be to determine the type of paint that the walls are painted with.

There are several types of paints:

Water-based or acrylic paint. It does not have the ability to repel water, does not have a pronounced smell, interacts well with the surface, is absorbed into it deeply, holds firmly, fixing itself in the structure of the material.
Oil paint. It has a characteristic smell, forms a special layer on the surface, repels moisture well.

Preparing the wall before painting

Before sticking wallpaper on a painted wall, you need to carefully prepare it for this. The entire success of the operation depends on this. If there are any flaws on the wall, this will affect the quality of wallpapering, as well as the likelihood of them completely falling off the walls.

Stages of preparing a painted wall:

Washing the wall. Wash the wall with soapy water or a small amount detergent. Then rinse thoroughly with clean water.
Painted wall primer. It is this procedure that will carefully prepare the wall for wallpapering without problems. Primer can be purchased at a hardware store. It is best to take a primer on concrete. It is she who will best lie on the wall and bring the expected effect. It is better to choose a light color so that it does not shine through the wallpaper.

How to hang wallpaper on painted walls

There are several different ways wallpapering on painted walls. Each method is quite simple, and the choice depends on the characteristics of the wall itself.

Wallpapering on acrylic or water-based paint

For this type of gluing, it is necessary to update the finish old wall. It is necessary to neutralize the previous layer of the substance that was used for finishing. It is necessary to prepare a solution of solvent and primer in a ratio of one to one. The solvent will corrode the coating and allow the primer to penetrate deep into the walls. This ensures that the new finish is firmly attached to the wall.

It is important to let the wall dry completely. Then the final coat of primer should be applied. This method makes it possible to obtain a special surface with roughness, which will be an excellent basis for wallpapering. When this procedure is done, the wall is dried, you can paste the wallpaper on the painted surface.

To do this, prepare a special solution: mix PVA glue and wallpaper glue in equal parts. The resulting composition must be applied to the wall and to the very surface of the wallpaper.

How to glue non-woven wallpaper for painting on the ceiling (video)

Wall papering with oil paint

This method depends on what the expected end result will be. There are many ways to work with oil paints.

The two main methods for preparing walls are:

Using a spatula, it is necessary to separate the paint from the wall. Then the surface of the wall should be primed.
Using sandpaper to process the surface of the painted wall. This will create special irregularities for the adhesion of the wallpaper, after which the surface should be primed.

Glue should be chosen only if you are confident in the manufacturer. When preparing it, it is necessary to strictly follow the instructions so that the glue fully shows its bonding properties.

It is necessary to take a very responsible attitude to all stages of wallpapering: from careful gluing of wallpaper joints using paper tape to cutting corners. You should beware of drafts, a sharp temperature drop.

Wallpaper sticker without prior preparation

In order to make sure that the walls will withstand this method of gluing, the following test must be carried out. Take the tape, attach it to the wall and tear off sharply. If the paint has not peeled off, the wall is ready for wallpapering. It is important to pay attention to the adhesive tape. If paint remains on its surface, wallpaper should not be glued to such a wall. It will be a waste of time and effort. In this case, the paint must be removed using special tools.

How to paint wallpaper

If special wallpapers for painting were pasted on the painted walls, a procedure for painting new wallpapers is to be done. Painting does not take much time and effort. It is enough to strictly follow the tips and instructions to achieve the desired result.

Wallpaper painting technology is as follows:

It is necessary to prepare materials for painting: paint roller, brushes.
Prepare your work surface. Lay the floor, hide sockets and switches.
Prepare paint for painting.
It is necessary to apply a new strip of paint, mixing it with the old paint.
Walls need to be painted alternately, moving from one wall to the next.
In order for the paint not to dry quickly, you can use the method of air humidification.

After applying one layer, wait for it to dry and apply subsequent layers as needed.

How to paint wallpaper for painting (video)

If it is necessary to make a quick repair and there is no time for a long and thorough preparation of the working surface, it is possible to stick wallpaper on painted walls. This will save time and effort. However, it should be remembered that this option for wallpapering will not be durable and there is a high probability of swelling and peeling of the wallpaper. In order to avoid trouble, you can follow strict instructions for wallpapering painted walls: determine the type of paint on the wall, check the quality of its attachment to the wall, thoroughly wash and sand the wall, prime the surface.

Wallpaper, as a finishing material, appeared in wide use in the second half of the 20th century and since then their popularity has only been growing. For a quick repair, this is best option. But in old houses sometimes there are painted walls, and many are interested in how to stick wallpaper on paint with their own hands so that they hold securely.

The classic instruction says that under the wallpaper or under the putty, the paint must be removed completely. But from experience, we can say with confidence that the wallpaper on the paint holds well, only before sticking the wallpaper on the paint, the surface must be prepared in a certain way. There are several ways to prepare, and each of them is quite affordable to do it yourself.

Decide on the type of paint

The first thing to start with, before gluing the wallpaper on the paint, is to determine what kind of base you got. because different surfaces prepared differently.
To begin, moisten a section of the wall or ceiling with plain warm water and leave for 10 to 15 minutes.. If the surface has absorbed moisture, it is easily washed off with a sponge or, then you have water-based paint.
If water flows off the wall without lingering, the coating has a durable glossy surface and when you try to remove it with a scraper or spatula it breaks off in whole pieces, then you got a wall painted with oil paint or enamel.
These 2 reigned supreme in the last century and, as a rule, they will be on the old walls. As for modern paints, such as acrylic, alkyd, Zinga electrically conductive paint or Polysteel fire retardant paints for metal, the approach should be somewhat different here. But first things first.

When choosing and buying wallpaper, one should take into account the fact that a canvas with a clear pattern will need to be combined. In this regard, the consumption will be slightly higher, on average by 10 - 15%.
Of great importance is the selection of glue, we advise you not to philosophize and take glue for this type of wallpaper. Otherwise, the canvas will not hold securely or, on the contrary, will stick tightly, which will create serious difficulties for you during the next repair.
Work starts from the window and further along the perimeter of the room. You can glue alone, but it’s still more convenient and easier to work together, especially if you need to combine the pattern. The first strip is checked by a plumb line.
We recommend immediately spreading glue on several pre-cut strips so that the glue does not dry out, fold the strips on both sides, from the edges to the center. It is best to spread with. Thus, the canvas will be saturated with glue and lie well.
After docking, you need to level the lane and drive out air bubbles with a soft cloth or roller. The adhesive protruding along the edges is wiped off immediately with a soft, dry cloth.

Works on water-based emulsion

Next, we'll talk about how to glue wallpaper on water-based paint. This type of coating does not have a strong, sealed film on the surface and absorbs moisture well. If you try to glue immediately on a water-based emulsion, then it will draw moisture out of the glue and the canvas will fall off. Therefore, old washable water-based formulations must be removed completely.
The most elementary way is to wet the wall and after 15 minutes wash it off with warm water or scrape it off with a spatula. But you can do otherwise. The surface is wetted with water, after which the paste is applied, when the paste is completely dry, you just have to scrape it off the wall with a spatula and wipe it with a damp cloth. With this approach, there will be much less dirt.
But now, especially on ceilings, water-based acrylic or alkyd paints are common. In some sources, they are also called water-based. But water will not take them, a different approach is required here. Before sticking wallpaper on water-based paint with acrylic or alkyd filling, the wall is covered with a special solution.
The preparation instructions are extremely simple, the solvent and primer are mixed in a 1: 1 ratio. It is better to take a solvent special for this type of composition, the soil is selected depending on the type of base. The solvent will partially corrode the surface and allow the primer to penetrate deep into the wall. After the wall is completely dry, wallpaper can be glued onto it.

Oil paint work

The question of how to glue wallpaper on oil paint is also relatively easy to solve. The fact is that oil paint is a fairly strong coating, in old houses it can be applied in several layers, it can be problematic to remove it. Before gluing wallpaper on oil paint, the surface can be treated in 2 ways.
First, we will talk about a simpler and optimal, in our opinion, method. If the paint layer has eaten in tightly, you do not need to overexert yourself trying to scrape it off. In this case, you should take sandpaper with a large grain and clean the wall well, to a matte state.
After that, a special solution is prepared, the primer is mixed in equal proportions, for this type of wall, with PVA glue. This composition is applied to the surface and left to dry completely. After that, you can start gluing.

Tip: if there are walls on the plane small scratches, chips or bumps, it is better to use thick, heavy vinyl wallpaper.
Their price is slightly higher, but with their help you can hide all the defects and do without putty.

But the layer of oil paint does not always hold firmly, in this case method 2 is suitable. Before sticking wallpaper on oil paint, we advise you to tap the wall for voids and try to scrape it off with a spatula. If the coating is removed in fragments, the masters advise to arrange these fragments. That is, not peel off the entire wall, but only scrape off horizontal stripes 50 mm wide, with an interval of 200 mm.
Next, the strips are primed and puttied so that the surface is even. As a result, we get even stripes of putty, on which our wallpaper will hold. Some craftsmen advise something in between, putty what has been torn off, then sand and cover with a mixture of soil and glue. Each of the above methods deserves attention, and which one is closer specifically to you, decide for yourself.

Tip: when working on oil paint, in order for the canvas to hold more reliably, experienced craftsmen advise adding a little PVA to the wallpaper paste. Depending on the density of the canvas, it can be diluted in a ratio of 1:3 or 1:5.

The video in this article shows general principle wallpapering.

Conclusion

In conclusion, I would like to note one more important detail. Regardless of the basis on which you glue the wallpaper, from the time you started work until the time when the walls are completely dry, the windows should be closed in the room and there should be no drafts. Otherwise, no matter how hard you try, the wallpaper will fall off.