Repair work related to wall finishing,must be accompanied by proper surface preparation. Before wallpapering, it is necessary to prime the partitions to strengthen and protect the surface from destruction. It does not matter what material the walls are made of.
Priming is a process that ensuresstrong adhesion of the wall surface and wallpaper. This can be brick, wood, metal or concrete. Each of these materials requires treatment. Priming is a process that will ensure reliable adhesion of the surface and wallpaper. Some impregnations for walls add antiseptic substances that prevent the development of mold and mildew.
What is a primer for and what is it
Many are confident that it is currently possible to applythere is no need to apply a primer to the walls before wallpapering, because modern wallpaper factories initially impregnate the material with a special glue. In fact, the walls need to be protected with a primer. Firstly, impregnation minimizes moisture absorption by the walls and levels the structure of the base.
Table of properties of primers and coatings.Secondly, after treating the surface with a primer, a strong bond is formed between the wallpaper and the wall. Thirdly, when working with materials that have high porosity, a primer solution is simply necessary. The strength of aerated concrete, plasterboard, foam blocks and plastered surfaces is increased by filling the pores and microcracks with impregnation. At the same time, air circulation through these materials is not disrupted. What is a primer? It is a liquid suspension that, when applied to a wall, penetrates into the partition by 2 cm. If the walls have a strong surface, then a deep penetration concentrate is used to impregnate such materials (for example, concrete and brick). Due to the ability to fill cracks and envelop pores, the primer allows you to get a perfectly strong and smooth surface. Return to the table of contents</a>
Which primer for wallpapers to choose
The choice of soil mixture depends on the material fromwhich the walls are made. The cheapest option for priming the surface is considered to be impregnation of the walls with ordinary wallpaper glue. The main advantage of such a primer is a decrease in the possibility of moisture absorption by the work surface, but it does not protect against possible stains on the wallpaper. This type of impregnation can only be used on perfectly flat surfaces. Today, construction supermarkets offer a wide selection of primers for walls. But despite this, the question of how to choose a primer is still relevant. In order to make the right choice, you need to take into account the wall material, the humidity of the room and the time you can spend waiting for the impregnation to dry.
Properties of adhesion primer.If you plan to glue wallpaper on walls that do not absorb moisture well (for example, with existing plaster or paint finish), you will need to apply an adhesion primer to the surface. Depending on its components, it is divided into the following subtypes:
Before priming the walls, they must be cleaned.surface and rub down all chips and cracks. Next, it is very important to choose the right mixture, because the quality of wallpapering and the overall result depend on the composition of the suspension. But which primer should you choose for wallpaper? Let's consider each type of impregnation in detail. Acrylic mixture is one of the most versatile and common impregnations that meets all consumer requirements. It is most often used to prepare concrete, brick, wood and plywood walls. Acrylic suspension is contraindicated for impregnating bases that contain ferrous metal. Main characteristics:
- easily soluble in water;
- has no smell;
- almost universal for surfaces;
- dries up within 5 hours.
To treat the wall before painting, useacrylate primer. Alkyd primer is used to treat wooden surfaces. Most often, the substance is used in country houses. When applying the suspension to wood, a layer is formed on which not only wallpaper, but also other finishing materials adhere perfectly. Alkyd mixtures are divided into several types depending on the composition:
Main characteristics of alkyd solutions:
- provide an ideal coupling with any surfaces;
- use for external and external works;
- application for wallpapering and painting walls;
- the possibility of using before laying tiles;
- Drying time - 15 hours.
Glyphthalic impregnation is ideal for surfaces,made of metal or wood. Due to its composition, it creates the correct layer between the wall and the wallpaper. It is recommended to use this primer only in rooms with low humidity, otherwise it loses its properties, which is why the result of the work may be disappointing. The suspension dries within 24 hours. The components of the mineral primer include gypsum, cement and lime, so it is ideal for impregnating concrete and brick walls. Depending on the volume of the room, the density of the wall and the characteristics of the material, the mineral impregnation dries in 3-24 hours. Perchlorovinyl suspension is used for both external and internal work. It is resistant to low temperatures. The primer is used when working with brick, concrete and metal walls. At high temperatures (in summer), the perchlorovinyl mixture dries in 1 hour. Return to the table of contents</a>
Primer for liquid wallpaper
Before applying liquid wallpaper, the walls must beprime for better adhesion of the wall surface with the solution. Liquid wallpaper is a decorative plaster in composition and consistency. It is based on silk and cellulose fibers with bonding agents. To prime walls under liquid wallpaper, use a transparent emulsion or white suspension. Prime the walls in 3-4 layers to level the surface and eliminate the possibility of stains after rolling with liquid wallpaper. For better adhesion of fibers and partitions, use acrylic deep penetration primers. If the surface is smooth, it is necessary to apply a primer containing quartz dust to it. This will give structure and roughness, therefore, the liquid wallpaper will lay smoothly and without breaks. You can make such a primer yourself by adding fine clean sand or quartz (marble) dust to the usual impregnation. So, the description and characteristics of all impregnations known today have been considered, now you can easily choose a primer that suits you. Manufacturers of primer suspensions offer concentrated primer, diluted impregnations and dry material. The quality of the product does not suffer, so choose any of the types. The use of primer mixtures improves the adhesion of the surface to the wallpaper and significantly reduces the amount of wallpaper glue spent on finishing. The advantages of impregnation include the creation of a layer that is destructive to fungus and mold. This is of great importance during repair work in corner rooms and apartments located on the 1st floor.</ ul>
