Knauf - plaster for interior and facade finishing

To finish the interior and exterior surfaces of the house today, a lot of different materials are used, each of them requires the availability of work skills, as well as some knowledge in the field of construction. Regardless of whether you are doing repair work or not, you should be aware of the Knauf brand, the plaster of this manufacturer is popular all over the world today.

In the range you can find materials for internal and external works. Among the first should be allocated "Knauf Rothband", while the representative of the second variety is "Knauf Unterputts UP 210", which will be discussed below. In order not to overpay, experts do not recommend buying a compound for external work, if you plan to do interior decoration of premises. This is due to the fact that such compositions are more expensive for the reason that among their characteristics is increased resistance to aggressive effects of moisture and temperatures, which can vary significantly throughout the year.

Characteristics of the gypsum mixture "Knauf Rothband"

Plaster gypsum Knauf is designed for domestic work, it is manufactured in Russia, so its cost is not too high for the domestic consumer. For 30 kg the package will have to pay 360 rubles. The 10 mm layer will dry for three days, and the consumption per square meter will be 8.5 kg, which is true if the layer has the same thickness. This composition has a gray color, and can be operated at a temperature of +5 to + 45 °. After the preparation of the solution, it should be consumed within 30 minutes, so do not shut the excessively large volume of the mixture. The thickness of the layer can vary from 5 to 50 mm. This product is not intended for use outside. Among its qualities, one should emphasize elasticity.

Main features of Knauf Rothband

Plaster "Rotband" Knauf is a universal gypsum mixture for manual finishing of walls and ceilings. Suitable for almost any foundation, whether it is brick, concrete, expanded polystyrene, plaster or cement. If you plan to use this mixture to finish the ceilings and walls, then you should consider that it should be used in rooms with a normal level of humidity. Suitable product for use in kitchens or bathrooms. If you plan to form a centimeter layer, then one square meter should go 8.5 kg. Particularly fond of the builders of the plaster Knauf Rotband for smooth walls and ceilings of concrete.

Preparation before use of Knauf Rothband

The substrate must be dry before applying the mixture and have a temperature of at least 5 °. The surface is cleaned of layers, dirt and dust, as well as formwork grease. From the protrusions should be disposed of, and the metal elements are covered with anti-corrosion compounds. When it comes to highly absorbent surfaces, they are covered with a primer using a spray gun, brush or roller.

Plaster Knauf "Rothband" can be applied on a slightly absorbent surface, which is pre-treated with a primer "Concrete contact" to improve the adhesion of materials. Expanded polystyrene, plasterboard and cement plaster must be dried after processing with Betonokontakt. Gypsum fiber sheets, silicate products and ceramic bricks, and also aerated concrete should be treated with the Grundirmmitel primer, which after drying is dried.

Installation of lighthouses and preparation of plaster mortar

Plaster of gypsum Knauf "Rothband" should be applied to pre-installed beacons and protective profiles. On the surface with a step of 30 cm should be applied mounds from the solution "Rotband", in which the beacons are pressed. Their alignment is carried out in a separate plane. The distance between the profiles should be less than the length of the rule by 20 cm. On the inner surface of the angular profiles should be applied mounds of "Rothband", removing them by 30 cm from each other. Starting from the central part and moving to the edges, the profiles are set to the corners, this must be done in one plane with the beacons.

To prepare the plaster solution for 1 bag of dry mixture, add 18 liters of water. In the container should be covered with about seven trowels of the composition and mix everything well. After the mixture left in the bag is poured into a container and mixed until it is possible to obtain a uniform consistency. If necessary, you can add liquid or a dry compound to the tank by mixing it. The result should be kept for about 5 minutes. When applying the solution to a wall or ceiling, it is not permissible to add a dry mixture or water, as well as other components.

Application of plaster

Recently, consumers are increasingly choosing products Knauf, plaster "Rotband" of this manufacturer can also be bought by you. With the technology of its application it is necessary to familiarize yourself before the moment of solution preparation. Using a plaster falcon, the solution is applied to the ceiling surface. If you work with a wall, then the movements should be directed from the bottom up. As an alternative solution, the composition is thrown by the trowel. In the first case, the surface is leveled by the rule.

If necessary, to form a sufficiently thick layer of plaster, first the mixture is applied to the drying before drying, using a plaster comb. The next layer is applied one day after the first solidifies completely. For stained polystyrene or DSP plaster is applied together with reinforcing mesh, the dimensions of which should be equal to 5x5 mm. The grid is fixed to a third of the depth of the layer.

Recommendations for leveling

Visiting the store, you can see that in a large range of products represented by Knauf brand, the plaster of this manufacturer can be designed for external and internal works. If you used the last version, the setting will take place 45-60 minutes after application. At this stage, the master aligns the surface with a metal spatula or slats, filling the cavities and cutting off the excess. On slopes and corners of roughness should be cut plaster plane.

Smoothing and smoothing the surface

If the wall is supposed to stick wallpaper or paint the base, then after 15-minute exposure, the surface is wetted and wiped with a spongy or felt float. This allows you to even out depressions and traces from a spatula or slats. As soon as a matte shade appears on the surface, the plaster is smoothed with a wide spatula or a metal float. Such a wall after drying will be ready for gluing wallpaper. If you want to achieve a glossy surface, then after 3 hours after applying the mixture, the plaster is wetted with water and smoothed with a float. Do this in a day, after the plaster does not have to putty, because it will be ready for painting.

Characteristics of Knauf Unterputts UP-210

For external works, you can use Knauf cement plaster, which is supplied in 25 kg bags and costs the consumer 243 rubles. This leveling mixture is made on a lime-cement basis. A composition for manual and machine application is intended. "Knauf Untermputts" can be used for plastering not only facades, but also ceilings, as well as walls in rooms with high humidity. This should include garages, cellars, etc. With success, this composition is used to level the foundation under the cladding with natural stone, decorative plaster or tiles. A mixture is intended for internal and external works. The consumption of dry composition per square meter is 16.5 kg with a layer thickness of 10 mm. In the process of work, do not freeze and quickly dry the plaster until hardening. The decorative coating can be applied only after the plaster layer has dried.

The product is made on the basis of special additives, cement and fractionated sand. The mixture is capable of increasing the water-retaining capacity of the surface, the material is plastic and allows the formation of the most thin layer of the solution. During the drying process, the mixture does not shrink, cracks do not form on it. The application can be carried out with a continuous pump or manually. Facade plaster Knauf has a grain size of less than 1.5 mm, adhesion is 0.4 MPa. The compressive strength is more than 2.5 MPa, and the viability of the solution can vary from 1.5 to 2 hours. The water-holding capacity of the mixture is more than 98%. The indicators of frost resistance are also quite impressive and amount to 150 cycles of freezing and thawing.

Features of application

Knauf's products are of reasonable cost, plaster for the facade is no exception. But to achieve a positive result, you must follow the rules of application. For example, Knauf "Untermput" can be used only at plus temperatures, and also on completely dry surfaces. The base must be freed from flaking particles, otherwise it will be impossible to avoid errors during the application. Subsequently, some plaster elements can simply move away from the wall surface.