Is it possible to glue new wallpaper over old

Is it possible to glue new wallpaper over old Is it possible to glue the new wallpaper on the old one - how to do it correctly

To carry out repair work, residents of apartments and houses often hire craftsmen or even prefer to carry out finishing with their own hands. But sometimes the old wall covering is very difficult to remove, and most people start to find out if it is possible to glue the new wallpaper onto the old one.

With the usual procedure, the old finish will be completely removed from the walls and only then can the new one be glued. But sometimes, in order to save money, effort, time, and even to simplify the procedure as much as possible, certain people began to glue the new wallpaper straight onto the old coating. At the same time, they will exclude the putty process and wall sanding.

But this method has many advantages and disadvantages, you should consider in detail the cases when it can be used, and in this case, the result of the repair will look terrible.

General information

Is it allowed to glue new wallpapers on old ones

Looking in detail, is it possible to glue new wallpapers on old, then the answer is yes. This should be done taking into account the restrictions:

  1. Is it possible to glue new wallpaper over old If the old layer has a good adhesion to the wall and clutch. It is worth paying attention to corner areas, seams, joints, where flaking and discrepancies are most often possible.
  2. Wallpaper canvases should be glued to the old smooth finish, and in variants with patterns there will be much less adhesion area, and therefore the quality of pasting can be greatly affected, and the service life of this coating will be shorter.

  3. Any material should be glued to entire wall surfaces.
  4. It is best to choose a wallpaper for a new layer in a dark shade with large patterns. Due to this technique, the previous wallpaper will not shine through, and a large ornament is able to hide roughness and irregularities.

Please note that before gluing the material over the old one, you should pay attention to the type of finish that is already on the wall surface. Depending on the variety, a new suitable coating should be selected, as well as a gluing technique.

Types of wallpaper

Paper

Is it possible to stick new wallpaper canvases on top of old, paper - definitely a positive answer. This is an ideal base that can last for years. If paper wallpaper acts as a base, then they will make it possible to avoid bulges, irregularities and roughness. If you stick paper wallpaper as a second layer, then they will quickly, well and easily attach and hold for a long time.

Useful recommendation! In the case of paper options, you should choose a color and pattern that is darker than the old coating, because brighter colors can show through from the bottom through half-transparent paper.

If paper wallpapers were glued to the surface of the wall, you can safely glue photo wallpapers on top of them.The main thing is that there is no roughness on their surface, because the thin material of the photo wallpaper, any irregularities are very noticeable. Before starting work on finishing, it is imperative to check the quality of adhesion of old sheets, make sure that there are no peeling and bubbles on their surface. If found, stripping is required so that when in contact with moisture, the new repair does not become damaged.

Vinyl

With vinyl wallpaper on the wall, things are much more complicated.

No covering, even similar ones, can be glued on top of vinyl wallpaper. They have an oilcloth corrugated surface to which other types of materials will not adhere well. the new layer will only fall off if you stick them on top. Themselves, vinyl canvases can be glued to old paper wallpapers, but then they will not last long, because they are very heavy. There will be a high probability that they will simply begin to tear off the paper base, which means that it is important that the base has a strong adhesion to the walls.

If you have chosen vinyl wallpaper for pasting, then to increase the operational life, you need to take time to remove the old coating.

Non-woven

New wallpapers can be glued over old ones. In a large number of cases, many wallpapers are transparent, and therefore it will not be advisable to glue them on old ones, because they will be transparent. Experts will tell you with confidence that it is not recommended to glue non-woven fabrics on a paper covering, because the material is synthetic in structure. Gluing over such wallpaper is also not important, because it is actually unrealistic.

They usually have a corrugated surface and a very smooth film coating, and therefore it will not be possible to achieve a bonding effect.

Glass cloth

This popular option, like fiberglass, needs to be glued to a pre-prepared wall. It is not advisable to place them on top of old paper, because such a coating will require future plastering. The paper on the first layer is not capable of supporting the enormous weight. But if you work in the reverse order, then the fiberglass will be the base for gluing the new material, then you will need to achieve positive results.

In work, it will serve as an alternative to the reinforcing plaster layer, it makes it possible to level the walls, insulate and strengthen them. In its pure form, glass fiber will not be able to replace it, but it will act as an excellent corrugated base for staining. As a rule, it does not make sense to glue fiberglass wallpaper to paper.

Liquid

Previously, this variety, namely liquid wallpaper, is not intended to be glued to any type of finish, including paper. The final layer of putty requires processing the surface not as thoroughly as in the case of fiberglass.

This is the main advantage. New wallpaper on liquid wallpaper will be convenient to glue, and it will also create a smooth wall.Thanks to the cellulose, which is included in the composition, which is able to absorb the adhesive, excellent adhesion will be provided.

Penoplex

This is a new generation tool that will require gluing on perfectly prepared wall surfaces without remnants of old wallpaper or finishing. According to the installation technology, a film should be placed on the surface of the walls, which will help prevent the formation of fungus, help moisture to linger in the decoration with paper wallpaper.

Wallpaper can be glued to penoplex, but preparatory work is mandatory. The structure of the material will be very fragile, for this reason, reinforcement with a layer of putty is required.

Please note that finishing materials for wall insulation, which include expanded polystyrene, are best used outside the premises, because they contain certain substances harmful to humans.

Cork

The cork finish will have many benefits. Among them:

  • Convenience of gluing.

  • Availability of fire-fighting properties.
  • Keeping warm.
  • Ecological cleanliness.
  • Long operational life.
  • Great appearance.

The cork type of wallpaper is very convenient to stick to the surface of the walls, because the outer layer resembles paper. Due to this, they will be securely attached to the walls, even if they have an old paper layer on them. You cannot glue the rest of the paper wallpaper over the cork material, and most of the cork wallpaper is coated with wax or varnish, which will increase the service life.

For coloring

Any other material will not work on painted wallpaper, the paper is not able to adhere to the paint and varnish material. Any type of finish to be painted must be prepared and cleaned in advance.

Many layers of paint and varnish material will weigh down the wallpaper, and they will begin to lag behind the wall surface. For this reason, it is not worth sticking on the painted layer or applying the composition to the second layer.

Other cases

When decorating a room, one should not even forget about the ceiling, and the decoration of which is the most whimsical. The selected small-sized ornament will emphasize all the irregularities, bends, heavy wallpaper from the ceiling, ways to quickly lag behind. For this reason, the ceiling should be properly prepared for pasting, and it is advisable to completely get rid of the previous layers of paper so that the new ones stick well.

You can glue wall murals on old ones, but you shouldn't. In poor daylight or even in the evening, all joints and seams will be perfectly visible.

Good advice! It is best to trust the work with photo wallpapers to masters, since it will be difficult to glue this whimsical material on your own.

There is such a variety of wallpapers as washable. Nothing can be glued on them, because they are covered with a protective film on top.

It prevents the adhesive from penetrating into the inner layer, and the new wallpaper will not stick. It is better to glue the self-adhesive option on flat wall surfaces without remnants of old paper. If you decide to make a new decoration in the room on the old wallpaper, then the following problems may appear:

  • The formation of joints and seams, bulges, irregularities in the wallpaper.
  • Dark tones, large, bright and convex ornament begin to show through the lighter tones of new canvases.
  • Poor adhesion and flaking due to existing defects on the old layers in the form of bubbles, peeling and others.

    Before starting work, you need to get rid of the remaining defects, and if there are a large number of them, you need to get rid of the old finish layer.

  • Wallpaper peeling due to excessive weight.

Let's talk about the rules of work.

How to properly glue wallpaper over old ones

If you adhere to the basic rules in working with the old coating, and then you can achieve a reliable and high-quality result:

  • Tight fastening of the base without delamination and unevenness.
  • Only a paper version with a perfectly flat structure should act as the bottom layer.

  • The top layer should be darker than the old one.
  • It is required to glue the new wallpaper between the seams of the old wallpaper in order to hold the parts together.
  • Even application of adhesive to prevent blistering.

Next, let's talk about the adhesive composition.

Adhesive composition

The selection of a suitable adhesive for gluing new wallpapers for a long time is required based on the following criteria:

  • Their weight.

  • Wallpaper material.
  • Additional wall features.
  • Humidity level, temperature.

A large number of wallpapers are glued on universal adhesives. Advance should be measured out of proportion depending on the criteria.

But in order to glue vinyl wallpaper on an old coating, you can choose special formulations with antifungal components.

Tools and materials

The main tool for work is a spatula. They can check the base and fill up problem areas in the plaster layer. You will also need:

  • Is it possible to glue new wallpaper over old Adhesive composition and wallpaper.
  • Utility knife for cutting off excess.

  • Construction tape for measurements.
  • Soft cloth to remove excess glue at the joints.
  • Oilcloth.
  • Roller for leveling surfaces and removing air.
  • Adhesive application brush.

Now let's talk about how to get ready for work.

Preparation

You can glue the new wallpaper at a time when the old coating has been completely cleaned of any defects. The putty should dry completely. Air bubbles can be removed with a hot iron through cheesecloth.To increase the tenacity of the materials, a deep penetration primer is required and once dry, work can begin.

Technology of pasting

There are such nuances of technology:

  • The adhesive composition should be applied either to the wall, or also to wallpaper canvases, depending on the variety.
  • It is required to fully dock the pattern before cutting the canvas.
  • It is not important to rush to throw away the scraps, they can fill the space near the batteries, door or window openings.
  • The sheets should be glued from the ceiling downwards.
  • The room temperature should be kept between +15 and +25 degrees.

  • Do not open windows, connect an air conditioner so that there are no drafts.

If you have time, you need to carry out the test on one blade, and after gluing it we wait a day and check the quality of adhesion.

Disadvantages of the solution

It is possible to glue the new wallpaper onto the old one, but the procedure has many disadvantages. Among them:

  • High probability of fungus formation.
  • Clearances.

  • Reduced attractiveness of new materials due to bulging and unevenness.
  • The fragility of the repair work.

To completely remove the old coating from the walls, you can use an innovative tool, namely the "wallpaper tiger", which will efficiently rid the walls of paper, as well as leave the plaster intact.

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