The modern building materials market is constantly updated with new compounds. They have improved features. This allows you to carry out construction and repair work faster. The end result with the use of innovative technologies is of high quality. One of the important tools that is used in finishing work is an adhesive primer.
The category of funds presented includes several different compositions. To choose the appropriate option for construction and repair work, it is necessary to consider the technical characteristics, features of each type of primer.
General characteristics
The beginning of repairs in the apartment is associated with the emergence of a lot of questions. What material for finishing work will be required in a particular case, many owners of private real estate do not know. Therefore, the advice of experienced repairmen will help in resolving this issue.
Adhesion is the ability of the base to adhere firmly to the finish. In this case, the layer deposited on the surface does not peel off. He willstay on the ground for a long time. Some materials need to increase the level of adhesion. In this case, a special primer is applied.
There are many similar formulations on sale. They are able to increase the adhesion of the surface to a greater or lesser extent. When choosing, it is important to consider what characteristics the base is marked with. There are rough and smooth materials. When processing them, the primer must have not only adhesive properties. A number of additional effects are present in such formulations.
Rough surfaces
The properties of the adhesive primer can vary considerably depending on the type of compound. All surfaces on which the presented materials are applied are conventionally divided into two groups. These are rough and smooth bases. When choosing a primer, it is important to consider the type of surface it will be applied to.
All adhesive primers that are used for rough substrates differ in a number of characteristics. They have high penetrating power. Even dusty surfaces are glued and strengthened with high quality. The initial characteristics of the base in this case are noticeably improved.
The pores of surfaces close. The consumption of finishing materials in this case is significantly reduced. Paint, glue, plaster are absorbed evenly. If there are special components in the composition, the primer may prevent the development of fungus and mold on the surfaces.
Smooth surfaces
Please note that concrete primer may differ significantly fromsimilar means for plastic. There is a large list of surfaces that do not have pores and are not highly absorbent. For them, the primer presented above is not suitable.
Smooth surfaces include plastic, glass, metal, paint and other similar materials. It is for them that compositions are used, which are called primers. They are distinguished by high adhesive ability. Such compounds make the surface rough. Finishing in this case can be qualitatively fixed on the base.
One of the most popular materials used in this case is Betonkontakt. It is made by many large companies. The composition of such primers differs significantly from those intended for rough surfaces.
Composition
To understand the difference between an adhesive primer and a concrete contact, what material to purchase for various surfaces, it is necessary to consider their composition. The presented products are made on the basis of polymers. They add quartz sand of a certain fraction. The smaller it is, the thinner will be the layer of cured primer film on the surface.
For compositions intended for smooth surfaces, the presence of a larger number of adhesive components is characteristic. If the sand fraction is large, the surface will be rougher. Therefore, it is important to consider what type of finish will be applied afterwards.
In addition to the components listed above,additional components may be included in the primer. They will give the composition water-repellent, antibacterial, anti-corrosion qualities. It should be noted that, regardless of the variety, all soils are vapor-permeable. This is a positive characteristic of the material.
Destination
The beginning of the repair in the apartment is accompanied by the purchase of the necessary materials. You should find out in advance in which cases you can not do without a primer. First of all, it is used for cladding. A primer is applied before installing tiles, laminate, self-leveling floors or linoleum.
The presented composition must be applied to the surface before painting. This significantly extends the life of the finish. For latex, acrylic, water-based, oil and other types of paints, a certain composition is selected.
Another area of primer application is plaster. The application of starting and finishing compositions is impossible without an adhesive agent. This becomes especially important when the plaster layer is from 3 cm thick. In this case, the finish does not slip, does not collapse.
Primer action
Primer compositions can be divided into two groups. The first category includes reinforcing materials. The second group included a penetrating adhesive primer.
Strengthening compositions are distinguished by a significant increase in the adhesion of the finish to the base. There is much more dispersion filler in this primer. This allows you to providemaximum adhesion for smooth surfaces. If it is necessary to create a finishing layer on a smooth material in which there are no pores, it is precisely reinforcing compounds that are used. They increase the strength of the surface they are applied to.
Deep penetration primers are used for porous materials. They contain a much smaller amount of dispersed particles. Such compounds penetrate surfaces to a depth of 10 cm. Their adhesive characteristics will be much less.
Composition
There are several varieties of adhesive primers that differ in composition. There are 4 main categories of funds. The first group includes an acrylic adhesive primer. These are environmentally friendly formulations. They don't emit a strong odor. This is the most versatile type of soil.
Alkyd varieties are used for internal processing. They are made on the basis of organic solvents. Such compounds have a pungent odor. Suitable for non-absorbent surfaces.
Glyptal primers are applied to metal and wooden surfaces. They take a long time to dry. Also, these compounds should only be used for dry rooms.
Perchlorovinyl primers are used for a wide range of surfaces. This is a toxic compound. It is used exclusively for outdoor work. The soil dries out quickly. After an hour, you can proceed to the subsequent finishing.
Betonkontakt
Choosing a primer for concreteand other smooth surfaces, preference should be given to such a variety as "Betonkontakt". The presented tool was first produced in Germany. It was first introduced to the market by the Knauf company. Subsequently, the presented composition began to be produced by other global brands.
This is a versatile product that can significantly improve the adhesion of the finish to the surface. It is used not only for concrete, but also for glass, metal, tiles and even painted surfaces.
If the base has a low ability to absorb moisture, it is “Betonkontakt” that should be preferred. Today, in addition to the primers "Knauf", the compositions of the company "Cerezit" and "Prospectors" enjoy great popularity of this type. Their prices vary considerably. It can be, depending on the manufacturer, from 200 to 500 rubles. for 1 l.
Acrylic primer
If it is planned to create an adhesive layer for an absorbent surface, deep penetration primers are used. They are made on a water basis. These are environmentally friendly acrylic compositions. The most famous and high-quality adhesive primers in this area are Knauf and Ceresit.
The presented compositions process not only porous concrete, but also plaster before subsequent finishing, drywall sheets and other similar surfaces. In some cases, it will be necessary to apply several layers of the product. If you plan to process wood, the primer should include an antiseptic and pigments that mask resinous stains.
Acrylic primer can be used in anypremises. It is highly environmentally friendly. Due to the absence of a pungent odor, this variety can be used even when decorating a bedroom or children's room.
Alkyd primer
One of the popular primers are alkyd compounds. This variety is used in the process of applying paint to prepared surfaces. It is also used when old paint has already been applied to the base. The product is characterized by fast drying.
Otex adhesive primer is in great demand in this category. It is produced by the world famous company Tikkurila. Use this primer before painting galvanized steel, aluminum, plastic, fiberglass and ceramic tiles.
The presented composition is characterized by a matte structure. She is white. However, if necessary, the composition is tinted with special additives. Can be used as an intermediate layer before painting. The lower old layer in this case will not affect the shade of the finish.
Expense
Considering the technical characteristics of the adhesive primer, you should pay attention to its consumption. This figure depends on a number of factors. First of all, the consumption is affected by the structure of the surface on which the agent is applied. The more porous it is, the more primer will be required. However, after its application, you can save on the amount of subsequent finishing.
Also, the fraction of sand added to the base affects the consumption. If it is shallow, the primer film layer will be thin. In thatcase, less surface material is required. A large fraction leads to an increase in the thickness of the layer, the consumption of the primer.
To determine how much product you need to purchase, you need to read the manufacturer's instructions. For thin-layer primers, the consumption can be at least 20 g/m². The average value of this indicator is 150-200 g/m². If necessary, you will need to apply the product in two layers. In this case, the primer consumption increases to 500-550 g/m².
Design Features
In order for an adhesion primer to improve the quality of finishing work, it must be applied correctly. All requirements are stated by the manufacturer in the instructions. In some cases, the surface will need to be cleaned to remove traces of dirt and grease.
Next, the first layer of primer is applied. For this, brushes or a roller are used. Professional installers can use the method of spraying the composition on the surface. In this case, the processing is carried out in a short time, and the consumption of materials is significantly reduced.
The layer should dry well. In some cases, it will be necessary to apply the primer to the surface again. Many formulations leave a white or pink film after drying. If individual sections have not been processed on the wall, this will be visible. In these places, it will be necessary to re-apply the composition.
Recommendations from experts
Experienced builders recommend carefully choosing an adhesive primer. At the same time, it is important to take into account the characteristics of the processedsurface, subsequent finishing materials, and environmental conditions.
Applying the product to the surface is not recommended at low temperatures. Processing is carried out at an average level of humidity. The ambient temperature must be +5ºС or higher. Otherwise, the quality of the composition deteriorates significantly.
It is necessary to purchase products for surface treatment only in specialized stores. Do not buy cheap, little-known formulations. They are not able to provide the required adhesion strength of different materials.
Having considered what an adhesive primer is, its features and varieties, you can choose the best option that meets the conditions of finishing work.
