Gypsum plaster HP start. Types of Knauf plasters and their features Advantages of Knauf MN Start gypsum plaster
Dry plaster mixture based on gypsum binder with polymer additives.
Application area:
Plaster KNAUF-MN START is intended for plastering walls inside buildings by machine using plastering machines, for example, PFT G5, PFT G4.
The mixture adheres well to solid substrates ( brickwork, cement plaster, concrete, etc.).
KNAUF-MN START can be used for finishing rooms with normal humidity, as well as in kitchens and bathrooms with a coating that provides protection against moisture.
Suitable for interior work.
Advantages:
- High productivity of works - 3-4 times more in comparison with manual drawing.
- Does not crack even with a thick layer.
- The consumption of gypsum plaster KNAUF-MN Start is almost 2 times less than traditional cement-sand plaster mixtures.
- Application of a plaster layer up to 30 mm thick in one sweep without preliminary spraying. If necessary, thicker layers can be applied twice.
- High water-holding capacity - the mortar mixture does not delaminate and does not dehydrate even on porous, moisture-absorbing substrates and at elevated temperatures.
- Regulates the mode of humidity - the surface "breathes", creating a favorable microclimate in the room.
- The material is made of environmentally friendly natural mineral (gypsum) and does not contain substances harmful to human health.
Dry plaster mixture "Knauf MN Start" based on gypsum binder with polymeric additives is intended for machine plastering of indoor walls with normal humidity, including kitchens and bathrooms (SNiP II-3-79*).
Scope of gypsum plaster "Knauf MN Start":
Gypsum plaster can be applied on all common hard substrates (masonry, cement plaster, concrete, etc.) as well as on EPS and CBPB surfaces.
Consumption of plaster "Knauf MN Start":
For plastering 1 m 2 of a surface with a thickness of 10 mm (excluding losses), about 10 kg of dry plaster mixture (~ 10 kg / m 2) is required.
Advantages of gypsum plaster "Knauf MN Start":
Increased productivity - 3-4 times higher than manual application.
Does not crack even with a thick layer.
The consumption of gypsum plaster "Knauf MN Start" is 2 times less than traditional cement-sand plaster mixtures.
Application of a plaster layer up to 30 mm thick in one stroke without preliminary spraying. If necessary, it is possible to apply thicker layers in two coats.
High water-holding capacity - the mortar mixture does not delaminate and does not dehydrate even on porous, moisture-absorbing substrates and at elevated temperatures.
Regulates the humidity regime in the room - "breathes", creating a favorable microclimate in the room.
The material is made of environmentally friendly natural mineral (gypsum) and does not contain substances harmful to human health.
MN_START_Infolist_(Press)_CS6_preview (213,32kb)
Designed for indoor plastering of walls and ceilings by machine using plastering machines, for example, PFT G5, PFT G4.
Can be applied to all common solid substrates (masonry, cement plaster, concrete, etc.).
- High productivity of work - 3-4 times more than manual application.
- Does not crack even with a thick layer.
- The consumption of KNAUF-MN Start gypsum plaster is almost 2 times less than traditional cement-sand plaster mixtures.
- Application of a plaster layer up to 30 mm thick in one stroke without preliminary spraying. If necessary, it is possible to apply thicker layers in two coats.
- High water-holding capacity - the mortar mixture does not delaminate and does not dehydrate even on porous, moisture-absorbing substrates and at elevated temperatures.
- Regulates the humidity regime in the room - "breathes", creating a favorable microclimate in the room.
- The material is made of environmentally friendly natural mineral (gypsum) and does not contain substances harmful to human health.
Knauf dry mixes are in demand among professional finishers and those who first picked up a spatula. This article provides an overview of the line of ready-made gypsum and cement mixtures of this company. The data on technologies of their use are given.
General recommendations. The surface temperature must meet the Knauf requirements, usually 5 °C or more. The substrate must be dry, free from loose materials, dust or dirt. To do this, hard brushes are passed along the entire wall, the protruding parts of the masonry mortar are knocked down with a hammer.
Gypsum compositions
Mixtures, a significant percentage of which is gypsum, are widely used in interior decoration residential premises. This is one of the most convenient options. However, you yourself can draw a conclusion by reading. When using Knauf products, the surface after plastering is ready for further finishing after a week.
| Name | a brief description of | Thickness of one layer, mm | Consumption at 10 mm layer, kg per sq. m. | Packing, kg | approximate price |
|---|---|---|---|---|---|
| Rotband | All-purpose, dry mix, unless otherwise noted | Wall: 5-50, ceiling: 5-15 | 8,5 | 25 | 300 rub. |
| 30 | 350 rub. | ||||
| 20 (paste) | 600 rub. | ||||
| Goldband | — | 8-50 | 8,5 | 30 | 360 rub. |
| MP 75 | Machine application | Wall: 5-50, ceiling: 5-15 | 10 | 30 | 270 rub. |
| MN Start | 10-30 | 10 | 30 | 250 rub. | |
| HP Start | — | 10-30 | 10 | 25 | 240 rub. |
Almost all compounds that are labeled "for machine application" can be used when manual work. But on the contrary - in any case! This can lead to a breakdown of expensive equipment with all the ensuing consequences.
Preliminary work
- Applying a primer. It is possible to increase the adhesive properties of the base plane by pre-priming it. For walls made of various materials their approaches. So, walls made of cellular concrete and bricks (materials that strongly absorb water) are primed with Grundirmittel (consumption 0.1-0.15 kg / m2) or Grund (consumption 0.4 kg / m2), which dry out for about 6 hours. This is done so that water from the plaster does not soak into the wall, which prevents it from setting prematurely and unevenly. Concerning concrete surfaces or walls insulated with EPPS, then they are coated with a primer Betonokontakt (consumption 0.3 kg / m2), which provides better adhesion to such smooth bases. The coating dries for about a day.
- Wall marking and installation of lighthouses. Beacons are installed at a distance of no more than the length of the existing rule, fastened to the mortar or dowels. If you are dealing with a relatively flat base plane, then beacons can be dispensed with, for example, when plastering a wall of blocks or bricks.
- Installation of corner profiles. To obtain the correct angles, the plaster is applied to the fastening part of a specially profiled profile in increments of 20-40 cm, after which the element is mounted in a plane indicated by beacons. After the solution has hardened, you can proceed to the main stage of work.
Rotband
Many well-known mixture of Knauf Rotband. In the video below, the features of the composition and the procedure for working with it. You can find more information about this plaster and how to work with it here.
Goldband
Dry mix Knauf Goldband is suitable for interior decoration, regardless of the material of the walls. The main requirement is the use in conditions of normal humidity. Let us denote the main points of the technology for using the mixture:
- Solution mixing. About 18 liters of cold water are poured into the prepared container. tap water for 30 kg of dry mix. First, several trowels of the mixture are poured, the composition is mixed until a homogeneous liquid mass is obtained. Only after that, the remains of the plaster are poured out, everything is mixed with a mixer. If necessary, the consistency of the solution is adjusted by adding water or a mixture of Goldband.
- Application. The viability of the solution is no more than 25 minutes - during this time it must be applied to the prepared surface. When finishing bearing walls from blocks or an insulated base, a layer of plaster is reinforced with a mesh. If it is necessary to apply a thick layer of mortar, then this is done in two stages: first, the first is applied, a week is waited for it to dry, then a primer is applied, after it dries, the second layer of plaster follows. The solution is evenly distributed by the rule according to the level of the beacons.
- Alignment of the resulting surface. An hour after the preparation of the solution, its excess is cut off with a cutter rule. By this time, Knauf Goldband should grab.
- Rubbing the plane. After 15 minutes, for the subsequent painting of the wall, the surface is moistened with water and, after the release of milk, it is rubbed with a sponge grater in a circular motion. The purpose of this operation is to smooth out the bumps from previous operations as much as possible.
- smoothing down. At the finishing stage, when the liquid from rubbing is absorbed into the material, the wall is smoothed with a trowel.
In the video below, a comparison of Knauf products with one of Volm's dry mixes. How objective the verdict is - only you can judge.
This must be taken into account when using all Knauf gypsum plasters:
- in order for the applied plaster to dry faster, it is required to ensure normal ventilation of the room to be finished. In order to intensify the process, it is not allowed to use heating appliances- the finish may crack from too rapid evaporation of moisture;
- if finishing is planned in the future decorative plaster, then the leveled base is additionally primed. In our case, the use of Tiefengrund primers is relevant;
- the water used for the preparation of the solution must be clean, its optimum temperature is in the range of 5-30 °C. More cold water negatively affects the mixing, while exceeding the temperature bar affects the increase in the rate of evaporation of the liquid from the solution - the appearance of cracks in the plaster layer;
- after completing the planned daily scope of work, it is necessary to thoroughly clean the containers, tools and equipment from the solution. Otherwise, a serious decrease in the viability of mixed mixtures is possible.
HP Start
Another version of Knauf plaster is HP Start, designed for manual application to the inner surfaces of the walls of residential premises (conditions: normal humidity and temperature within 16-30 ° C). The contents of a 25 kg bag of the mixture are closed with approximately 14 liters of water previously collected in a 50 liter container. Viability plaster mortar does not exceed 40 minutes - during this time it is necessary to go through all the stages that are relevant for the Goldband mixture.
Almost the same, as well as the visualization of the technology for using the HP Start mixture, is shown in the video below.
MP 75 and MN Start
These brands of plaster are positioned as mixtures for machine application. They are often used for large volumes of work by specialized companies. In a few words, we describe the technology for working with Knauf MN Start and MP 75:
- Preparation of the plaster station. This stage carried out in accordance with the recommendations for a specific station model for mechanized application plasters, which you could read about in this article. A mixture of MP 75 or MN Start is poured into a special hopper, after which the water flow is adjusted to mix the mixture in order to obtain the material of the desired viscosity.
- Application of the solution. Approximately 0.3 m from the surface, holding the gun in a position perpendicular to the base, the solution is applied from top to bottom. The thickness of the layer varies due to the speed of the gun.
Alignment, mashing and smoothing are carried out in the same way as when working with the Goldband brand.
Remember that machine plaster does not tolerate mortar immobility. In the case of materials from Knauf we are talking about 15 minutes - you can’t pause more than this time, because. station may fail.
The video below will focus on one of the most popular compositions for mechanized plastering - MP 75.
cement mixtures
Cement-based dry mixes are used where hydrophobic properties, mechanical resistance of the hardened coating and the possibility of mixing a large batch of mortar are put in the first place. In the latter case, the viability of the solution reaches 1.5-2 hours - this time is enough to finish a large area.
When carrying out exterior finishing work, care must be taken that the applied composition is not exposed to direct sunlight, precipitation, strong wind. In some cases, this is affected by excessively rapid evaporation of moisture from the solution, in others - by waterlogging of the coating. All this negatively affects the durability of the plaster layer.
Depending on the nature of the wall material, there are two approaches to pretreatment:
- coating with a primer composition Quartzgrund or Isogrund diluted with water 2 times - for walls made of cellular concrete (absorbing moisture);
- spray with mortar Adhesive with pre-saturation of the walls with water - to increase adhesion to smooth substrates
adhesive
The main purpose of this plaster mixture from Knauf is to guarantee an increase in the adhesive properties of the base surface. At the same time, a change in the hygroscopicity of the wall material is achieved, which has a positive effect on the hardening of the plaster layer. In most cases, it performs the functions metal mesh, can be applied both manually and by machine.
Briefly about the work:
Closure of the mixture. 25 kg of dry mixture are mixed with about 5 liters of water, the components of the solution are thoroughly mixed.
Application. Hygroscopic surfaces are abundantly moistened. Adhesive is sprayed with a layer of 5 mm. Subsequent operations can be carried out after a day.
Universal technology for applying Knauf cement plaster:
- a layer of mortar up to 15 mm thick is applied, which is leveled with an h-shaped rule;
- after it seizes, the excess mass is removed with a lattice grater;
- if a thicker layer is needed, then it is applied already on the hardened surface of the first;
- weak points of the base and corners are additionally reinforced with mesh reinforcement. When applying a layer of plaster with a thickness of 30 mm or more, it is recommended to use a metal mesh;
- subsequent work is carried out only after the complete curing of the solution, usually from three to four days to two weeks (depending on the thickness and temperature and humidity conditions)
Grunband
Grunband is a cement dry mix, the solution of which, when applied to walls, provides them with additional heat-shielding properties. It can be used both for exterior and interior decoration, regardless of the material of the walls and the method of application.
Below is a short video on the composition of Grunband and its application.
Unterputz
If you are faced with the task of leveling the walls, which will subsequently be under the influence high humidity, then for these tasks it is worth using the Unterputz mixture. Like other Knauf cement compositions, it can be applied by machine or by hand. To knead 25 kg of the mixture will require approximately 5 liters of water. All other works are carried out according to the universal technology given above.
What is the mixture at work, you can see in the video below. It does not take much time.
Zokelputz
For walls that can be subject to mechanical stress, you have to use high-strength plaster - such as Knauf Sokelputz. Preliminary and all subsequent work is carried out according to the universal rules that are relevant when using dry cement mixtures. One bag per 25 kg contains about 5 liters of water.
Sevener
Knauf Sevener is an advanced development of the company, a dry mix endowed with several qualities at once: high adhesion to any substrate, hydrophobic properties, and a guarantee of protection against cracking. It can be used as an adhesive when insulating the facade with insulation boards, for repairing old plastered surfaces and as a normal leveling plaster. Suitable for both machine and hand application.
To avoid the formation of cracks, after applying the solution, a plaster mesh is embedded in it. Technology of use depending on the goals:
- Like glue for thermal insulation. The Sevener solution is applied pointwise to the insulation - in the middle part, with a strip 5 and 2 cm wide and 2 cm thick, respectively - along the perimeter. After two days, the plates are considered glued.
- Like plaster on insulation. A solution with a thickness of 5 mm is applied to the surface. It is convenient to do this with a toothed trowel with a tooth size of 10 × 10 cm. A fiberglass mesh with a cell of 5 × 5 mm is embedded in the layer, the resulting plane is leveled and left for a week until completely dry.
- Plastering of concrete and brick foundations. Works are carried out according to the universal rules for cement mortars.
Diamond
Of the entire list of plasters described in our review, only Diamant belongs to the category of decorative structural plasters for manual and machine application. Its peculiarity lies in the fact that, along with decorative properties, it is resistant to adverse conditions - suitable for indoor and exterior finish. To mix 25 mixtures, approximately 7 liters of water will be required. After the first stirring, the mixture is kept for a quarter of an hour, and then repeated stirring follows. Depending on what material was used to level the base, the wall is additionally primed with the following compositions: GKL or concrete wall- Putzgrund, gypsum mortar - Quartzgrund, cement plaster - as in the previous case or Isogrund. In all cases, the primer should dry for at least a day.
Dry building mixes are used not only by professional builders, but also by those who rarely pick up a spatula. Start plaster is often used to treat residential premises, hospitals and other buildings with normal humidity.
The Knauf start universal mixture is designed for plastering walls. Buildings where this product can be used should be of normal humidity, the walls of kitchens and bathrooms in residential areas can also be treated with the mentioned building material.
Gypsum plaster knauf xp start is incredibly easy to use, it is necessary to level the walls before finishing them manually. It consists of gypsum, polymer additives and special fillers. The dry mixture after preparation for work has an elastic structure, it can be applied in 1 layer at a thickness of 1-2 cm. created from environmentally friendly natural materials.
The advantages of the product include wear resistance, optimal drying time, in addition, this composition is able to regulate the temperature and humidity conditions in the room. Gypsum composition start can be used after dilution for 40 minutes. The cost of gypsum mixture start nr is 2 times less than traditional sand-cement plaster.
The described product is endowed with water-retaining ability, the composition does not delaminate on the walls, does not dehydrate on porous, highly absorbent surfaces.
Preparation of surfaces for work and preparation of the mixture
Walls that can be treated with this mixture should consist of concrete, brick, gas blocks, they can be plastered with cement or gypsum. Any base must first be cleaned of dirt and dust, eliminate obvious irregularities on them. Walls made of concrete, brick and other materials are pre-treated with a primer that is designed for the respective material.
The gypsum compound is diluted with cold water, 30 kg of dry plaster will require 18 liters of liquid. The finished composition for the initial surface treatment should not contain lumps, foreign inclusions. It is possible to work with a solution at a temperature not lower than +5º. The minimum layer of starting plaster can be 3-5 mm, the maximum 30 mm. In the event that the composition layer is supposed to be more than 15 mm, it should be applied twice. The time for complete drying of the plaster, starting with a layer thickness of 10 mm, is 5-7 days.