How to glue wallpaper on concrete walls. application of deep

In this article we will talk about how to prepare concrete walls for sticking wallpaper, and why such preparation is needed. It’s not a secret that most modern buildings are built using monolithic or prefabricated concrete structures. Regardless of the brand of cement-based solutions used, the finished surface of the walls and floors is characterized by uneven density.

How can this feature affect the result of wallpapering?

Reasons for conducting pre-treatment of concrete surfaces

Before you paste wallpaper on a concrete wall, this surface just needs to be properly prepared.

In order to do the preparatory work in time, there are several reasons, including:

• Uneven density of reinforced concrete structures and, as a result, uneven absorption of glue. As a result, the glued materials will be attached unequally to the unprepared walls, and in some places they will move away.
• Concrete surface without finishing is characterized by the presence of microrelief, which will probably peep through the paper..

Important: The statistics of improper repairs shows that through the paper coatings, as the glue dries, gray spots appear, which are especially noticeable on plain wallpaper.

• Paper materials that have been stuck to raw walls are more likely to cause mold..

Features pre-treatment of the walls before sticking finishing materials

The instruction of carrying out preliminary preparation of concrete surfaces is simple.

But, before starting such work, it is necessary to determine the goals that are pursued by their implementation.

• First of all, due to the pre-finishing necessary to ensure uniform absorption of the adhesive. In this case, the material will adhere equally to the walls along their entire surface.
• Elimination of microrelief characteristic of the majority of untreated concrete goods.
• Dust removal of the walls and, consequently, the prevention of the formation of dark spots on plain wallpaper.

So, we have listed the main objectives pursued in the course of the preparatory work, now we will determine how to achieve such results.

Budget time-tested way

You do not know how to glue paper wallpaper on concrete walls with a limited budget for finishing works? It does not matter, there is a good old-fashioned way that can be applied today.

To implement the budget method of pre-finishing will require a lot of old newspaper. Our task is to glue over the walls with newspapers using ordinary wallpaper glue.

The advantages of this method are as follows:

• The cheap price of the finished result, of course, if there was a pile of unnecessary waste paper on the mezzanine;
• Effective alignment of the microrelief;
• Ensuring uniform adhesion of wallpaper across the wall, as the newspaper is thinner and lighter, and therefore well glued to a variety of coatings;
• Easy installation.

However, there are drawbacks:

• It is not always possible to find a file of old Izvestia on the mezzanine, and the purchase of new newspapers for pasting onto the wall is not advisable due to the high cost.
• The newspaper will not save your repair from the appearance of mold, especially if the apartment does not have an effective ventilation system and heat-saving double-glazed windows are used.

The use of primers (impregnation) deep penetration

This method of preparing concrete is becoming more common due to its effectiveness and ease of use.

As already mentioned, the concrete wall and other structures have a heterogeneous density. This is due to the presence of a porous structure, or rather a different pore size. The use of reinforcing impregnations makes it possible to equalize the parameters of concrete density by filling in all the pores, which is important if the reinforced concrete was previously cut with diamond circles.

Impregnation penetrates the micropores, fills them and dries, forming a truly monolithic structure. The result of the application of primers with increased penetration is the optimal hydrophobicity of the building material, and therefore more efficient use of glue. The advantages of impregnation are reasonable price, high quality of the finished result, as well as ease of application with a different instrument.

Putty coating

Currently, the market offers a wide range of putties and plaster mixes, using which you can quickly and efficiently prepare your own wall for wallpapering.

As a rule, most of the specialized dry mixes are based on gypsum. The advantage of using such materials is a completely homogeneous coating, which not only absorbs liquids with the same intensity, but also becomes as smooth as possible and equally suitable for wallpapering and painting.

Putty is applied to concrete walls as follows:

• The surface is cleaned of dirt and covered with the most liquid primer in order to nail down the dust (this is especially important if diamond holes were drilled in concrete before).
• The mixture is diluted in accordance with the instructions until a uniform consistency without pronounced seals and lumps.
• The solution is collected with a small spatula on a wide spatula and hold them on the wall at an angle of 30 degrees
• At the end of the putty, the wall can be sanded with a special plaster grater to give the walls the required flatness.

In some cases, instead of dry gypsum-based plaster mixes, you can use cement-based mixes, such as tile adhesive.

The advantage of this solution is optimum adhesion, since the composition of the adhesive and the composition of the concrete include Portland cement. But there is a drawback, because at the end of drying, the tile adhesive is poorly fed to the polishing.

The use of special substrates

If the question is how to glue non-woven wallpaper on concrete walls, you can apply a special substrate.

The substrate on the basis of polyurethane or cork is a universal remedy because it allows you to simultaneously glue the wallpaper with high quality, and also provides good thermal and sound insulation. The last property is especially important when finishing the external walls, the temperature of which varies depending on weather conditions.

Substrates are glued directly to the concrete. Glue is selected depending on the material from which the coating is made. Along with adhesives recommended by the manufacturers of the substrate, you can use traditional compounds like "Bustilat" or "Liquid nails."

Important: The advantage of most modern substrates is their resistance to the appearance of mold and other fungal infections.

Conclusion

So, now you know how to prepare the surface of the walls for subsequent finishing work. Sticking wallpaper on pre-prepared surfaces is not a big deal, and you will surely cope with such a task. Detailed instructions for pasting surfaces prepared in advance with wallpaper can be found in the relevant articles on our portal.

Are there any questions that need clarification? In this case, a lot of useful information you can find by watching the video in this article.