When surface finishing, putty is quite often used today. It is intended to form a leveling or finishing layer. In the future, various decorative coatings, including paint, can be applied to such preparation.
Area of use
By leveling the surface with putty, you get bases that are resistant to negative factors and humidity, so quite often these mixtures are used to decorate bathrooms and kitchens. Using putty, you can eliminate defects in ceilings and walls, making the consumption of decorative materials less. Among others, the Knauf finishing putty is presented on the building materials market, which will be discussed below.
Technical specifications Knauf HP Finish
This gypsum putty for finishing interior work is sold in 25 kg packages. The composition is applied to the starting layer. Its consumption is 2 kg per square meter, which is true if the layer thickness is 2 mm. Among the main properties should be highlighted:
- moisture resistance;
- profitability;
- environmental friendliness;
- ability to regulate indoor humidity
If the thickness of the layer is equal to 1 mm, then every square meter of the surface will need 0.9 kg. Having familiarized yourself with the technical characteristics of the Knauf finishing putty, you can find out that the composition has polymer additives and gypsum. For 25 kg of dry mix, approximately 13.75 liters of water will be needed. This volume can be increased to 16.25 liters.
Specialist recommendations
The application of the mixture can be carried out in a layer in the range from 1 to 3 mm. Cook should be such an amount of solution that you can develop in 80 minutes. The temperature of the work varies from +5 to +30 ° C. The composition is intended for thin puttying of ceilings and walls in residential environments, the operation of which is characterized by normal humidity. Apply the composition manually.
Instruction for use
Finishing putty “Knauf”, the flow rate of which was mentioned above, must be prepared before application. To do this, the dry mixture is mixed with water manually or with a mixer until a homogeneous mass can be obtained. After completion of work, tools and container should be washed in clean water. The base should be prepared, for this it is cleaned of dirt, dust and free particles. It is important to exclude the presence of formwork oils on the surface.
The cultivated area must be dry. It is important to make sure that it is solid, even and resistant to damage. Finishing putty “Knauf” is used to fill joints and cracks. If necessary, the surface can be cleaned thoroughly. If there are irregularities and depressions on the basis, they should be repaired at the initial stage of facing. This is due to the fact that the Knauf finishing putty is used to make the surface smoother.
Methodology
Using the described composition, you can form a relief pattern on the surface. The working solution is prepared so that the consistency resembles thick sour cream. The composition is applied to the walls, which were previously processed "Rotband Grund." To create an invoice, you can use one of the methods existing today. The simplest is the texture of the "rock". To do this, the plaster is applied to a small area, the area of which varies from 0.5 to 1 m 2 . This is to ensure that the 3 mm layer does not dry ahead of time.
Next, the trowel needs to be applied flat to the plastered area, but you should not press it too tightly. The lower edge of the ironer rises, while the master should make a smooth movement directed downward. Before the final separation of the tool from the surface, it should be directed in different directions. As soon as the plaster dries, its surface should be wiped, which will remove the most protruding areas. This can be done using a grout grid or a construction grater. The dried surface can be painted.
Characteristics of the finishing putty "Knauf Rothband Pasta Profi"
For the finishing of the walls you can purchase the Rotband paste. It is sold in 18 kg buckets, the cost of one is 757 rubles. The paste is created on a vinyl basis and helps prepare the walls for wallpapering or applying paint. The composition has excellent adhesion, is resistant to cracks and is characterized by increased whiteness.
It is quite simple to apply the mixture, it can be used to smooth walls and ceilings without applying too much effort, because the finishing putty “Knauf Rotband Pasta Profi” is flexible. It is manufactured in Russia, therefore, at a cost it is more affordable compared to foreign counterparts. The composition is intended for dry rooms. For each square meter with a layer thickness of 1 mm, approximately 1.5 kg will be consumed. The Rotband paste is white and is intended for internal application.
Among the special properties should be highlighted shrinkage. The solution remains viable during the day. The thickness of the layer can vary from 0.1 to 2 mm. As a finishing coating, decorative plaster can be used. You can grind the surface after 24 hours. The mixture is completely ready for use. The binder is a polymer glue.
Instruction for use
Before applying the paste, make sure that the temperature of the air, base and putty are in the range of +10 ° C and above. If the application is carried out on plasterboard sheets, then they must be firmly fixed to the supporting frame. Concrete and plaster substrates must be dry, even and free from dirt, dust and delamination. Damages or large irregularities should be leveled using the Knauf Fugen mixture and wait for drying.
This finishing Knauf putty does not require preliminary priming of surfaces. Before starting work, the mixture must be mixed. If necessary, you can add a little water and mix the composition again. It is important to remember that the amount of liquid should not exceed 30 ml per 1 kg.
If the putty is excessively diluted with water, this can cause it to shrink severely and reduce adhesion. For work, clean tools and a stainless steel container should be used. This finishing Knauf putty is applied with a layer the thickness of which does not exceed 2 mm. You can use a mechanized or manual method.
The putty is leveled with a spatula. After drying, the layer can be sanded; it is best to use P240 paper for this. You can apply a finer grain. Dust is removed, and each subsequent layer is applied after the previous one has dried. Tools and containers must be flushed with water after completion of work. Drying time may vary, the final value will depend on the thickness and humidity of the layer, as well as temperature.
In order to speed up the process, heat guns should not be directed onto the surface to be treated. In 24 hours, a layer with a thickness of 1.5 mm will dry at a temperature of +20 ° C. The air humidity should vary within 60%.
Reviews about putty “Knauf Polymer Finish”
Before purchasing the goods, it is important to read the reviews on the putty of the polymer finishing Knauf. Consumers argue that the cost of a 20-kg bag is quite affordable. You will have to pay for it from 468 rubles. The dry mix is made on a polymer basis and is intended for application on indoor surfaces. After drying out the words, it is ready for wallpapering or painting.
Application should be carried out in a thin layer. The composition is used for the following types of surfaces:
- cement plaster;
- gypsum fiber;
- drywall;
- concrete.
This finishing putty for Knauf wallpaper, according to consumers, has unique properties, because after mixing the solution, you can use it for 72 hours. This indicates that by mixing the mixture once, you can work with it for several days. Consumers like that this allows the mixture to be developed completely, to use the composition economically and to prevent drying of the residues.
Putty has high adhesion, it is resistant to cracking, plastic and does not stick to the spatula. Application can be carried out in a uniform thin layer. According to home masters, putty is perfect for use not only by professionals, but also by beginners.
In order to achieve an ideal result, other materials of the manufacturer should be used for the initial alignment. The mixture is also good because it has a small grain size, which eliminates the possibility of shedding surface fragments. The coating will not shrink. Consumers argue that the mixture can also be used as a basic putty. Polymer mortar is an innovative development that embodies the best qualities of modern building materials.
Conclusion
Ready-made finishing putty “Knauf” for many consumers is the best solution. This is because there is no need to combine the mixture with water before use. However, some consumers believe that it is better to purchase dry powder, because in this case you can leave it in a certain amount if you could not work out the entire volume.