Features of machine plaster walls

This article will discuss one of the most modern methods of applying a finishing layer - machine plaster walls.

It is produced with the help of special equipment - stations for machine plastering.

Compared with the cost of manual labor, plastering, machining significantly reduces the cost of finishing the building.

Apparatus for plastering

The market represents reliable machines for work by machine method - PFT, Putzmeister and Kaleta. Depending on the manufacturer and set of functions, the weight of the machine can be from 100 kg to 280 kg.

The heaviest machines, in addition to finishing plaster, are designed to create bulk floors, masonry solutions, insulation plasters.

The feed range varies from 10 to 50 meters.

Capacity of the unit, depending on the type of pump and mixture from 2 to 20 liters( up to 60 liters in multifunctional professional machines).

The hopper allows one to cover 30 to 75 kg of material at a time. If you need a machine to finish the walls of your building, then pay attention that it works with the types of mixtures you need.

In case a wide range of applications is required, pay attention to the multifunctional device with a higher price.

The device consists of a hopper for filling the dry mix, a compressor that supplies compressed air, a mixer for mixing with water, a hose and a working gun.

The choice of dry mix depends on whether it is outdoor work or internal plaster. For the façade mixtures are suitable on a cement-sand base.

For internal wall finishing in rooms where there is no moisture, a gypsum base is used.

In both cases, the manufacturer adds hardeners and additives, which are responsible for the uniformity of the dried plaster and ensure the absence of cracks.

When choosing a mixture, make sure it is suitable for machine application.

Temperature regime, allowing the work on machine plaster, from +10 degrees. Do not allow drafts in the room and a strong wind for outdoor work.

The higher the humidity, the longer the time required for complete drying.

Read the training video before starting plastering by machine. Notice how the composition is applied.

The video shows that the worker puts the solution away from the corner, the plastering range is chosen so that there is no need to move with the gun turned on.

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Further work with plastered surfaces is made in a manner similar to the technology of wall treatment with hand-applied plaster - leveling and grouting.

Before the first start, study the instructions to the machine, make several test applications, changing the speed and strength of the solution, note the time required for batching before feeding and the time during which the solution can be stored in the tank when the device is running.

Procedure

For machine plaster, follow the following procedure.

The device is prepared as follows - the device is connected to the network and the source of water supply.

If there is no access to the central water supply, the pump can be connected to any water tank. In the process of plastering it is important to monitor the presence of water in the tank.

It is undesirable to use technical water not suitable for drinking from wells - the presence of salts in a significant amount in such water can react with the additives contained in the mixture, which will weaken the plasticity of the mixture for wall finishing or other negative effects.

Surface preparation is carried out in a standard way - debris of construction debris is removed, deposits are scraped off.

When it is necessary to plaster different contacting wall surfaces( for example, a brick wall is joined to a plasterboard wall), then the junction points are reinforced with a thin building grid with a 1x1 cm cell.

This will avoid cracks in the plaster at the joints of dissimilar materials. If the walls have open metal elements, then they must be treated with anti-corrosive composition.

After that, the building dust is blown off the surfaces, this is especially important if a preliminary primer is produced.
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Unless otherwise specified in the instructions for the plaster mixture, the walls of the slag block, foam block, brick and any other building material having abrasive inscribing surfaces must be primed and allow the primer to dry completely. Now the wall is ready.

Application of the working solution to the surface of the walls is carried out from a distance of 20-30 centimeters from the surface.

The working gun should be kept so that the supply of the solution is strictly perpendicular. Before the plaster is applied to the main surface, fill all the corners and joints.

The thickness of the layer is controlled by the speed of the pistol moving along the surfaces. The mixture is applied from top to bottom in such a way that the lower layer of the solution covers the upper one.

When plaster is applied to one strip, you can proceed to the next one, while always do everything overlap.

The cropping is done after the plaster has completely solidified, using a tool called a rule.

It or trowel is tightly applied to the surface and under pressure is carried down. To see if the plaster has hardened, it is possible in the following way - to attach the tool to the wall and try to cut the mortar.

If the rule does not stretch viscous mass and after the cutting remains an even layer, then the plaster is ready for cutting. The permissible deviation from a perfectly flat surface is 1-2 mm by 1.5-2 meters in length of the wall.

The plaster of the walls by the machine method will be smooth, 30-40 minutes after the end of the plastering of the strip, moisten the wall with a small amount of water and make a grout.

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Advantages of

machine plaster Machine plaster has several advantages over manual plastering, namely:

• Plastering speed. When plaster is carried out manually, the solution is prepared in a small amount, it takes time to stir it. The station mixes the solutions automatically. The speed of the plastering of the walls with the help of the station is 4-5 times greater than when using manual labor;
• Saving materials. The average cost of dry mix for manual application is 16 kg / m 2.Estimated output per 1 sq.m.with the machine method - 13 kg / sq. m. When plastering, for example, a private house, by hardware, you can achieve savings of 300 kilograms of plaster and more;
• High quality adhesion to the wall is ensured by applying a mixture under high pressure, which can not be achieved with a manual method;
• Minimizing labor costs. The laborious and time-consuming mixing process is performed automatically. There is also no manual transfer of the prepared mortar to the wall where the plaster is made.

As we discussed in the article and in the video, the quality and speed of work on plastering walls by machine is much higher than the manual method.

The station fully pays off when carrying out a significant amount of work( depending on the station - from 700 to 1200 sq.m.).

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The acquisition of the station is also justified if you plan to rent it or provide a car-trim service.

With much smaller volumes or one-time works, you can buy a used station on your site or rent it.