Betokontakt Knauf consumption per 1 m2. Concrete contact primer is the best tool for low-porous substrates. Rules for the use of material

Preparing walls for painting, plastering or other processing always involves the maximum leveling of the base. If formally, according to the descriptions of the compositions, it turns out that they can also lie on uneven surfaces, it’s not worth the risk once again. When finishing concrete, a concrete contact primer comes to the rescue.

Peculiarities

Adhesion between two dissimilar materials is often a major problem in finishing. Primers such as betonokontakt increase adhesion, even if the substrate does not absorb moisture well. The composition of such materials includes sand, cement and some special additives (they are determined by the recipe of the mixture). The rough outer layer created by the contact primer is formed by sand, and cement helps it to better adhere to the surface.

In the production, only environmentally friendly materials are invariably used, which do not emit bad odors and do not spoil the appearance of the walls.

Application and characteristics

You can use the material once after shaking. It is recommended to use it to:

prevent the destruction of paint on dry plaster;
facilitate plastering;
improve the adhesion of tiles to concrete walls;
close seams and cracks;
reduce premature shedding of finishing materials.

The Knauf brand primer contains acrylic, which gives it increased resistance to moisture. At the same time, the quality of surface preparation is not worse than that of most other auxiliary materials (and sometimes even better).

Issued:

both a universal mixture and adapted directly for interior work;
both large fraction and small fraction.

A carefully thought-out recipe and production technology allows the primer to remain unharmed for many decades.

After applying to the wall, it is enough to wait a few hours, and then immediately proceed to the main surface finish.

The German concrete contact is painted pink. It is designed to impregnate substrates that are not able to absorb glue or leveling compound. The polymer dispersion composition helps even in cases where the previous finish is not dismantled, but overlapped.

Betonokontakt is suitable for lubrication:

tiles;
expanded polystyrene;
drywall.

The leveling mortar laid on the primer dries evenly. Thanks to pre-treatment, it will be possible to reduce the amount of plaster or paint used. Betonokontakt has antiseptic properties. It effectively suppresses the occurrence of foci of any pathological microflora. When using it, the permeability of the intermediate layers of the finish increases, and because of this, the ventilation of the premises is facilitated, their exchange of air with the outside world.

The material from Knauf has a neutral acid-base balance. It retains its positive characteristics both in frost at -40 degrees and in heat up to +60 degrees. Due to the absence of toxic components, Knauf concrete contact can be used even where ventilation is unsatisfactory - there will be no harm to the health of households.

In a container of the most practical capacity (5 or 20 kg), the primer retains its characteristics for up to 1.5 years, unless the tightness is broken.

More about primer concrete contact Knauf- in the next video.

Mixture consumption

The consumption of high-quality Knauf concrete contact per 1 m2 is a very important and urgent issue. Professionals, and even those who have ever worked with such compositions, will say for sure that this indicator is determined by the type of surface, its initial state and the level of moisture absorption.

When analyzing construction practice (on average), the following figures were obtained:

Consumption for brick, sand concrete and porous concrete is 500 g per 1 sq. M. Costs can be reduced if impregnations that penetrate deeply into the material are used.
First-class monolithic concretes are primed in the amount of 350 g per 1 sq m, provided that the pore size is medium.
When there are few pores or the surface is already covered with paint, you can spend only 150-250 g of primer to cover 1 sq. M.

In order for adhesion to be fully ensured, the condition of the original wall surface must also be taken into account. If gaps are found during work or the base absorbs the finishing material very eagerly, it can be covered again, but only after the initial mixture has completely dried.

Determining exactly how much primers will have to spend is not so difficult. Its insignificant volume is weighed in a pallet and distributed over an area of 1 sq. m on walls and ceilings.

Such a test facilitates the calculation, allowing you to avoid both the purchase of unnecessary material and its sudden completion in the midst of work.

Home craftsmen and even experienced professionals are naturally interested in whether it is possible to deviate from the recommended figures, use a smaller amount of concrete contact. As practice shows, this is a big mistake: the cost of buying a primer is relatively small, and its lack worsens the quality of preparation. The created layer will be fragile - it can crack and exfoliate. The worst thing is that then it will not be possible to achieve a normal level of adhesion with the main finish.

Main characteristics and properties

The modern construction market offers a huge selection of finishing materials. In order for your repair to be of high quality and unique, you need to purchase good materials for it. One of such finishing materials is concrete contact. We will talk about it in this article.

Thanks to concrete - contact, you can make a smooth surface of the wall rough. The interior will be individual and at the same time decorated. This material is popular both among beginners who perform repair work with their own hands, and among specialists who have extensive experience in priming and puttying. Concrete contact primer does not contain large consumption.

Priming walls with concrete contact

Ground concrete contact is considered a universal finishing material. Has a number of advantages:

The finished coating dries quickly. 2 hours after applying the mixture, you can already proceed to another finishing material.
Thanks to the concrete contact, the surface (walls, floors, ceilings) has good adhesion to paints or varnishes.
Moisture resistant. After the mixture dries, a waterproof film forms on the wall, which prevents moisture from penetrating into the wall. High operating rate. A wall treated with concrete contact can last 60 years
Can be colorized in any color. Has a large range of colors.
It is applied to the wall with a spray gun, roller, brush.
Manufacturers produce a dry mix and a ready-made solution of different weights.

Surface types

The composition of the soil is applied to different surfaces:

Tile.
Tiles.
Concrete.
Painted wall with paint or varnish.

Tip: depending on the size of the fraction, the mixture is used before puttying or before plastering. Concrete contact with a fraction of 0.3 mm - before the putty mixture, with a fraction of 0.6 mm - before the plaster solution.

The concrete contact primer has the most economical consumption per 1 m2 for concrete.

Concrete contact primer: features and consumption per 1 m2
What is a concrete contact primer. Its consumption per 1 m2. Properties and step-by-step application technology. Benefits of concrete contact.

In the modern world, there are a huge number of building materials with certain properties. Primers, which are an indispensable material for preparatory work, differ in properties and bases on which they are applied. The concrete contact primer is a universal remedy, and today I will talk about its technical characteristics, composition, where it is used and what is its consumption per 1 m2. In addition, we will find out why concrete contact is needed and for what work Betocontact Knauf is suitable.

Primer for concrete

Scope of use

Primers are used to improve adhesion properties, as well as to improve the strength of the base, which is processed using the material. For each type of soil there is an instruction that prescribes the composition, material consumption per m2, as well as for what kind of work, external or internal, it can be used.

Concrete contact primer is used for the following purposes:

The properties of the primer make it possible to use it before performing screed or self-leveling floors, which is why it is often called a primer for a concrete floor.
Primer for concrete is used for surface treatment before finishing with plaster or putty
To reduce the porosity of drywall boards before gluing trellises or laying tiles
The composition allows the use of betokontakt before whitewashing the ceiling

The technical characteristics of the primer on concrete can be used for work with non-absorbent surfaces. These can be bases covered with varnish or paint, as well as tiled. Most importantly, for this there is no need to dismantle the old coating, because a penetrating primer is applied over these materials, forming a rough surface that adheres well to new finishing elements. It is worth clarifying that the concrete contact primer has an environmentally friendly composition, and this allows it to be used in any premises. Although GOST specifies what composition the primer should have, many manufacturers may deviate slightly from the list of elements, although this does not affect the quality of the material.

Let's look at the technical characteristics and properties of the primer:

Concrete contact primer - the best tool for low-porous substrates
What is concrete primer and where can it be used? Table of technical characteristics of the primer. Consumption per 1 m2. Betonokontakt from Knauf

Concrete contact primer is a special composition used for gluing standard finishing materials to rather unusual surfaces. Roughly speaking, this is not even a primer, but a kind of glue used to create special conditions that allow standard glue to stick to each other those materials that cannot be glued under normal conditions. This may be the need to glue tiles to metal or glass, etc. - the possibilities are quite extensive. Moreover, after applying the concrete contact primer, the material can be glued using almost any type of glue. Primer betokontakt knauf consumption per 1m2.
Primers, Betokontakt

Application area

After the completion of the repair work, many of us had to deal with such problems as peeling wallpaper sheets or peeling paint. The reason for these shortcomings is the lack of proper preparation of the base before finishing work, which in turn significantly affects the adhesion (adhesion) of materials. Primer betokontakt knauf consumption per 1m2. It is in ensuring the proper degree of adhesion that the role of the primer lies.

At the moment, there are many types of primer. Some of them are designed for processing a specific type of surface, such as wood or metal, while others are considered universal and can be used on any surface, regardless of the material. Primer betokontakt knauf consumption per 1m2. Concrete contact primer refers just the same to universal primers and can be used to work with brick, drywall, concrete, tile and many other materials. In addition, it is worth noting that there are special types of concrete contact that belong to compositions with local application, that is, according to the instructions, they are used exclusively for processing the specified type of surface, for example, for wood or metal. However, as practice shows, these separations are very conditional and, in principle, such concrete contact can also be used on other surfaces, although adhesion for the specified composition as a whole will be somewhat better. Primers, Betokontakt

Primer Betokontakt Knauf consumption per 1m2
Sale and delivery Primer betokontakt Knauf consumption per 1m2 from 150 rubles.

Betokontakt from Knauf is a building material that is unique in its properties. The peculiarity of the primer is that it can be applied as a separator to different layers, thereby ensuring their strong adhesion to each other. Betokontakt primer fits perfectly on tiles, paint and other smooth surfaces, increases adhesion, which makes it possible not to dismantle the old coating, but to carry out puttying and subsequent finishing on top of it.

Peculiarities

Primer Betokontakt is an acrylic dispersion mixture that provides high adhesion to the surface. After hardening, it forms a rough pink film. Due to its unique characteristics, Betokontakt from Knauf can be applied to expanded polystyrene, reinforced concrete structures, drywall.

It is used for the following purposes:

applied to concrete as an impregnation that prepares the surface for the subsequent application of adhesive,
strengthens and strengthens surfaces with low density before plastering,
applied to surfaces covered with oil or alkyd paint, when further finishing is required,
as a pre-treatment for gluing stucco moldings,
to prepare metal structures for subsequent filling.

Advantages and disadvantages

The advantages of the Betokontakt Knauf primer include the following features:

vapor permeability, since the surface can "breathe",
resistance to the formation of mold and fungus, thanks to the fungicidal additives included in the solution,
moisture resistance,
ease of application, and can be used both for work performed manually and with the help of special equipment,
fast drying (under optimal conditions, the drying time is 12 hours),
long service life (up to 80 years).

The Betokontakt primer is very convenient to use, as there is no need to prepare the composition for application.

The manufacturer recommends only mixing it thoroughly before starting work. Thanks to the ease of use and high quality of Betokontakt, it is convenient to apply by hand. without using complex construction tools. Even a beginner with little experience in repair and construction can cover the surface with this primer. Thanks to the pink color of the composition, it is easy to control the application of the primer so that there are no uncovered areas.

The disadvantages of the Betokontakt primer include the fact that after the layer has dried, it should immediately be blunted to the next finishing steps. Delay will cause dust and construction debris to settle on the rough surface, which will significantly reduce its adhesive properties and the final result of the repair.

Knauf produces Betokontakt of the following types:

with a fraction of 0.6 mm (for rough alignment),
with a fraction of 0.3 mm (for application under putty).

The amount of primer required depends on the porosity of the surface to be applied.

To determine the required amount of Betokontakt, you can be guided by the following data:

for surfaces with high porosity (brick, concrete slabs, stone), the optimal consumption per 1 m² is 0.4–0.5 kg,
for materials with an average porosity coefficient (monolithic concrete, decorative bricks, self-leveling concrete floors), the consumption is 0.2–0.38 kg per square meter of treated surface,
surfaces with a low porosity coefficient (reinforced concrete structures, ceramics, oil and alkyd enamel, glazed tiles), the optimal consumption is 0.15–0.25 kg per 1 m².

In order to slightly reduce the consumption of the Betokontakt primer, a conventional primer is first applied to the surface, which, after drying, reduces the porosity of the material. This method is most often used for highly porous surfaces, but it can reduce the adhesion of Betokontakt.

You can also determine the consumption rate per 1 m² using a test application, why do the following:

on the surface to be treated, measure a square of 1x1 m and limit it with a masking tape,
thoroughly mix the primer before application and pour 500 ml into a small container,
a container with a primer and a brush or other equipment used for application should be weighed,
apply the primer in accordance with the recommendations, ensuring a high quality coating,
again weigh the container together with the tool and the primer remaining in it,
the value obtained is the consumption of Betokontakt primer per 1 m². To calculate the required amount of primer, this figure must be multiplied by the area to be treated.

Consumption of primer Knauf Betokontakt per 1 m2
Betonokontakt is a primer with a wide range of applications. How to calculate the required amount of material and what is the consumption of Knauf Betokontakt primer per 1 m? would be optimal?

During the repair, preparatory work is always carried out: plastering, leveling, painting, etc. For better adhesion and reliable preservation of the material, primers are used. One of these compositions is concrete contact. The consumption of concrete contact per 1 m² of cultivated area depends on several factors.

When joining two materials with different characteristics, in most cases there are problems. The use of primers can correct the situation even with the most problematic surfaces. These compositions include concrete contact. After its application, due to the special composition, the surface becomes rough, which significantly increases adhesion.

Manufacturers of concrete contact use environmentally friendly materials. The mixtures do not have a pronounced smell and do not change the appearance of the walls.

The composition is applied after thorough mixing. Ready primer is used for the following purposes:

For example, the Knauf primer contains acrylic in its composition, which provides moisture resistance and high adhesion.

The concrete contact primer greatly simplifies the work with different materials and reduces the consumption of finishing materials. Most often it is used for concrete surfaces, but good results have also been seen when applied to brick and drywall.

Concrete contact consumption per m2 is calculated depending on the type of surface on which it is applied. Of decisive importance is its porosity - this will determine how quickly the composition will be absorbed. The higher the degree of absorption, the greater the consumption.

Surfaces have different absorbency:

Not always the user can determine the degree of porosity of the surface. To determine the consumption of concrete contact in such cases, test processing is carried out. On the experimental plot, with the help of adhesive tape, the boundaries of 1 m² are determined. Take a fixed amount of soil, for example, 1 kg. Begin to apply a layer to the selected area until a uniform coating is obtained. The remainder is weighed, then the consumption of concrete contact per 1 m² of wall is calculated.

famous brands

The primer mixture of different manufacturers has its own characteristics. This also applies to consumption indicators:

Application features

The effectiveness of concrete contact depends on a number of conditions. First of all - from the correct implementation of several stages:

Surface preparation, cleaning of dust and dirt, removal of old finishes. If the defects are minor, then plastering is not necessary.
Treatment of walls with impregnation or a simple primer mixture before using concrete contact.
Waiting for complete drying.
Priming the surface with a thin layer of concrete contact using a roller.
Drying the mixture for 2 hours.
Application of the second layer (their number depends on the condition of the surface, and each subsequent layer must dry well).

The surface is ready for puttying or finishing work.

Compared with other primer mixtures, the consumption of concrete contact per 1 m² is about 0.25-0.3 kg. It is not difficult to calculate its required amount: the consumption rate is multiplied by the quadrature of the treated surface.

Online calculators are available on specialized sites, and their use is completely free. Qualified builders took part in the development, so the probability of error is reduced to zero. By going to the desired site and opening the online calculator, just enter the required parameters:

Many consumers do not consider that priming with concrete contact is necessary, and for the sake of cost savings they refuse this procedure. But if the priority is quality and the exclusion of further problems, then it is necessary to apply a primer. Savings are negligible, and it is sometimes very difficult to eliminate unpleasant consequences.

Before finishing any surfaces with building materials such as cement, concrete, gypsum, lime cement and others, it is necessary to treat the base with a special compound. Then the further finishing will turn out to be of high quality and will not require repairs for a long time.

consumption per 1m2

The primer serves to enhance the adhesion of the cladding and treated surfaces, increasing their adhesion. In other words, this composition changes the properties of concrete, brick, slabs, which is very important, since the key to the success of any repair is precisely the increase in the adhesion of materials.

Mandatory for use during repair work, the composition is waterproofing and "Betonokontakt". The consumption of this agent directly depends on how porous the treated surface is. More porous ones require several layers of coating and more careful processing. Less porous ones are usually coated with a primer one or two times, and the consumption of "Betonokontakt" per 1 m2 is 0.2-0.5 kg.

"Betonokontakt" is used most often before:

Arrange concrete floors on magnesian concrete.
Install polymer cement concrete floors.
Install Portland cement based screeds.
Apply levelers, plasters, putties and other finishing coatings.

Considering an example on a wall or on a plasterboard partition, it is easy to see in practice that if the wall is abundantly coated with a primer before applying the adhesive, the tile will adhere quickly and reliably.

Due to its technical characteristics, the Betonokontakt primer is effectively used when working with expanded polystyrene, gypsum boards, reinforced concrete, concrete and many other building materials. Its consumption can be called very economical, which favorably distinguishes it from the mass of similar materials.

In addition, this primer is indispensable in preparing for the repair of walls with the remnants of old tiles or previously painted with any kind of paint. Sometimes it is simply not possible to completely remove the old tile and remove the paint layer. With the help of "Betonokontakt" you can easily prepare the old surface for laying new tiles, while the quality of adhesion of materials will be quite high.

A distinctive feature of this primer is that it is ideal for poorly absorbent or non-absorbent surfaces.

Operating principle

A primer gives old ceramic tiles or a painted wall the roughness, in other words, a kind of tackiness that is needed for this resurfacing.

Why is it convenient to use a primer

Unlike many other primers, this one is sold completely ready to use. The instruction suggests only thoroughly mixing the Betonokontakt mixture. The expense for the upcoming work is calculated according to the instructions. For work, you do not have to buy any special tools, and even a beginner can handle it.

Primer benefits:

Vapor permeability.
Moisture resistance.
Ease of work.
Fast drying.
Long shelf life.

Execution of work

The work with the primer is divided into two stages. This is the preliminary preparation of the surface to be treated and the application of a primer mixture to it.

Preparing the surface. We remove dirt, dust, moisture and any oil or grease stains and smudges, if any. There should be no cracks or chips on the surface. If necessary, the surface should be puttied.

Important: never apply a primer to wet putty!

Thoroughly stir in the container "Betonokontakt". We calculate the consumption per m2 following the instructions, adding water if necessary.

Advice: using a spray gun, it will be much easier to apply a primer. Although it is also possible to apply the mixture with a brush or paint roller.

When performing work, monitor the temperature in the room. It should not be lower than +5 °C. However, too hot air is also undesirable. Since the primer is non-toxic and does not have any specific smell, special protective equipment is also not needed.

We apply primer. It is produced which is very convenient when working. All areas that have not been treated are visible, which is very important when priming large surfaces.

As soon as the composition is completely dry, you can proceed to the main thing - to prevent dusting of the primed surface, as this will cause a decrease in adhesion, and the quality of fastening of the finishing material will suffer.

The consumption of "Betonokontakt" per 1m2 reaches 300 grams, which is considered the norm. You should know that the primer looks dry after 1-2 hours, although it actually dries only 6-8 hours after application to the surface.

Specificity and purpose

They are the most popular among builders. These are mixtures based on latex and acrylic. There are several types of primers.

Deep penetration.
Universal.
adhesive.
Special and impregnating.

When buying primers "Betonokontakt" you should definitely ask the seller for a certificate of conformity, since there are many fakes.

The penetration depth of the primer can reach 10 cm, while fakes sometimes remain on the surface and do not contribute to the adhesion of materials. Therefore, it is not worth saving, but it is better to purchase a high-quality Betonokontakt primer, the consumption of which is even less than that of many other compositions.

An important property of the primer is its characteristic, such as a decrease in the absorbency of a brick, plaster, wood or cellular concrete surface. The composition strengthens the pores of these materials. This also speaks of the efficiency and profitability of the Betonokontakt primer, the consumption of which is very economical, which makes it attractive for construction work of any complexity.

In repair or construction, the use of primers and contact concrete is of great importance. These compounds serve to firmly bond the base and the next coating, which may consist of a cement or gypsum base. Betokontakt is a ready-made priming solution, it does not penetrate deep into the base, but contains quartz sand, resulting in a sticky and rough coating. This is its main difference from the construction primer. It is applied under a coupler of a concrete and self-leveling floor, and also under plaster. With concrete contact, it is possible to process dense, smooth, slightly absorbent surfaces, such as concrete slabs and blocks. Below each product are consumption per m2, application and main characteristics. The composition creates a certain structure on a smooth surface, due to which a strong adhesion is created with the next coating, applicable for indoor and outdoor work, resistant to temperature extremes. Buy primer betonokontakt, you can order delivery and unloading to the site in our building materials store.

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