Primer "Betonokontakt" From Knauf: Technical Characteristics And Features Of The Composition, All The Pros And Cons

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Primer "Betonokontakt" From Knauf: Technical Characteristics And Features Of The Composition, All The Pros And Cons
Primer "Betonokontakt" From Knauf: Technical Characteristics And Features Of The Composition, All The Pros And Cons

Video: Primer "Betonokontakt" From Knauf: Technical Characteristics And Features Of The Composition, All The Pros And Cons

Video: Primer
Video: Бетоноконтакт 👍 Зачем и когда применять (ПОЛНОЕ ВИДЕО) 2024, March
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Primer "Betonokontakt" from Knauf is widely used to treat problem surfaces during repair and construction. The material is intended for impregnation of difficult substrates with low absorbency and poor adhesion.

Features and Benefits

Primer mix "Betonokontakt" is intended for coating concrete, reinforced concrete, plasterboard, gypsum, brick and lime bases. The material is a universal agent used for surface treatment before painting, tiling, plastering and wallpapering. The composition has proven itself well when working with metal surfaces, and is suitable for preparing any metal for the application of a decorative layer or plaster.

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The primer adheres well to the problem substrate and provides a reliable adhesion to the subsequent layer. This is due to the presence of fine-grained alkali-resistant sand in the primer mixture, which forms a rough surface structure capable of holding well the finishing material applied to it.

"Betonokontakt" can be used on surfaces painted with oil or alkyd enamels, while guaranteeing excellent adhesion to all types of plasters.

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The advantages of the material include several points

  • The main advantage of "Betonokontakt" is the possibility of its application on loose and crumbling surfaces. The primer not only slows down the destruction of the problem base, but also increases its strength and normalizes the porosity of the material. The mixture is suitable for treating wood elements that come into direct contact with the soil. This significantly expands the field of application of the primer, making the material even more popular and in demand.
  • Another advantage of the composition is the ability to neutralize chemical reactions that occur when lime or gypsum plaster is applied to cement. This makes it possible to carry out finishing work without fear of the incompatibility of these dissimilar materials.
  • Among the advantages is the possibility of installing stucco moldings on smooth bases. To do this, it is enough just to treat the decorated surface with "Concrete Contact" and wait until it dries completely.
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  • Thanks to Betonokontakt, it became possible to lay new ceramic tiles on top of the old one without the need to dismantle the latter.
  • The undoubted advantages are the ability to strengthen a dusty concrete base without the use of fiberglass mesh and a significant reduction in the consumption of liquid types of finishing materials.
  • Attention should also be paid to the ability of the primer not to let water from self-leveling mixtures into the base. Due to this quality, the formed layer does not lose moisture, which contributes to the normal setting of the solution, and prevents its cracking during the drying process.
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  • "Betonokontakt" is an alkali-resistant material and is suitable for manual and machine application. It can be used to securely bond a wide variety of materials, including glass, wood and metal.
  • The advantages include the durability of the treated bases. The primer layer is able to maintain its performance characteristics for 80 years without cracking or collapsing over the entire period of time.
  • Excellent waterproofing properties of the primer serve as a reliable barrier to moisture penetration into the base, which allows using "Betonokontakt" when decorating rooms with high humidity and a tendency to condensation.
  • The material dries very quickly and makes it possible to start finishing work within a few hours after its application.
  • The advantages are also the uniformity of distribution of the mixture over the surface and the absence of harmful components in the composition of the solution.
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The disadvantages include the need to apply the next layer immediately after the primer has dried, otherwise the rough surface will become dusty and partially lose its high adhesive properties.

Characteristics

Primer "Betonokontakt" is presented in the form of an adhesive mixture with the addition of crushed quartz sand. The presence of these two basic components is responsible for the ability of the material to provide high adhesion between adjacent finishing layers. The composition has a pink tint, which allows you to control the uniformity of its application to the surface, and helps to immediately see unpainted areas.

The material is produced in two modifications - with a fraction of 0.3 and 0.6 mm. The first type is used for surface treatment before puttying, and the second - before plastering.

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Soil acidity indicators correspond to pH 7.5-8.5, which indicates the neutrality of the solution. The mixture can be used both for external and internal work, retains operational properties in the range from -40 to +60 degrees and withstands up to 5 freeze-thaw cycles. In an unopened container, the mixture can be stored for up to 18 months.

The average consumption of "Betonokontakt" is 20 kg per 60 square meters and depends on the structure and type of substrate, ambient temperature and the required number of layers. For example, to process one square of tiles, 200 g of the mixture will be required, while to paint the same area of a concrete base, 350 grams will be required.

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The composition of "Betonokontakt" includes additives from fungicidal preparations, due to which the appearance of fungus or mold on the treated surfaces is completely excluded. Despite the excellent moisture resistance of the primer layer, the material has good ventilation and provides full air exchange in the room. The soil is produced in plastic containers with a capacity of 5, 20 and 22 kg.

The average cost of the material is 2.5 thousand rubles per bucket weighing 20 kg. The solution is completely ready for use and does not need additional dilution with water.

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Usage Tips

It is important to know the following:

  • Before starting work, it is recommended to thoroughly mix the solution using a construction mixer or an electric drill with a paddle nozzle. This must be done in order for the fine particles of quartz sand to be evenly distributed throughout the entire volume of the mixture.
  • Then the work surface should be prepared by removing mechanical debris and dust removal.

If the base has large differences in height, large chips or a general curvature, the irregularities should be eliminated with a cement-sand mixture and wait until the wet areas are completely dry.

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  • Despite the fact that the primer is completely ready for use, dilution of the mixture with water is allowed to reduce material consumption. However, for manual application, the amount of liquid should not exceed 50 ml / liter. For surface treatment by spraying, as well as for painting soft substrates, it is allowed to dilute the mixture with water in a 2: 1 ratio.
  • "Betonokontakt" can be used in conjunction with deep penetration soils, which are applied first. Processing is carried out in two layers, and the layer of "Concrete Contact" is applied after the previous one has completely dried.
  • It is easy to check the complete readiness of the treated base for applying the finishing layer: for this, it is enough to touch the primed surface. If the formed layer has stopped sticking, then the next coat can be applied. On average, it takes 12 hours for a primer to completely dry.
  • The temperature of the surface on which "Betonokontakt" is applied should not be lower than 5 degrees. The use of a primer in conditions of negative temperatures is prohibited.
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Testimonials

Primer "Betonokontakt" is a popular finishing material and is in high demand. Consumers note the environmental safety of the solution, excellent technical characteristics and full compliance with GOST, which allows priming surfaces in closed rooms without the use of personal protective equipment.

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Attention is drawn to the convenience of applying the solution and the ability to control the uniformity of the distribution of the mixture.

The pink color of the material prevents the formation of untreated areas, which improves the overall quality of finishing work.

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Reliable protection of concrete from the appearance of bacteria and mold is noted, as well as the possibility of strengthening unstable foundations. The ability of the material to provide good adhesion to dissimilar materials, such as wood and glass, is highly appreciated. Of the minuses, the high cost of the material is noted in comparison with traditional primers.

"Betonokontakt" of the famous Knauf trademark practically has no worthy analogs in its segment on the market of finishing materials.

With the help of this universal tool, you can clad problematic and unstable surfaces with any decorative coating, while ensuring the high quality of the work performed and significantly reducing the repair time.

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For information on how to choose a primer, see the next video.

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