Facade Plaster (45 Photos): Facade Wet Plaster Mesh For The House On Insulation And Foam, Application Technology

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Facade Plaster (45 Photos): Facade Wet Plaster Mesh For The House On Insulation And Foam, Application Technology
Facade Plaster (45 Photos): Facade Wet Plaster Mesh For The House On Insulation And Foam, Application Technology

Video: Facade Plaster (45 Photos): Facade Wet Plaster Mesh For The House On Insulation And Foam, Application Technology

Video: Facade Plaster (45 Photos): Facade Wet Plaster Mesh For The House On Insulation And Foam, Application Technology
Video: Application and installation of an external wall insulation system 2024, March
Anonim

Facade plastering is a very popular type of decoration for country houses and cottages. In addition to the pronounced aesthetic advantages, wet or monolithic plaster is designed to protect the structure from atmospheric influences in the simplest way - by applying a dense protective coating to the external walls. However, facade plastering, like any construction process, has its own subtleties.

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Features of the

When building a country house or renovating a building according to a design project, the responsibility of choosing a plaster mixture for finishing the facade falls on the shoulders of a professional architect-designer. The specialist is able not only to choose a beautiful color, but also to take into account the features of the material in order to maximize the individuality of the structure and not exceed the estimate.

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Various types of plaster mixes for outdoor use have some similar characteristics, including:

  • Ability to create a durable yet "breathable" outer wall covering, under which condensation does not accumulate.
  • High elasticity of the compositions, which makes it possible to apply it to any fantasy wall options.
  • Good adhesion to various substrates (subject to application technology).
  • High resistance to humidity, UV rays, temperature extremes.
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  • The presence of compounds that perform the function of insulation.
  • Excellent decorative qualities.
  • Long service life and easy maintenance.
  • Environmental friendliness.
  • The ability to quickly apply.
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Views

Facade plasters are usually divided into 4 categories, depending on the substance they are based on. These are the following varieties:

  • Mineral based on a cement mixture.
  • Acrylic plaster based on the resin of the same name.
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  • Silicate, at the base of which there are compounds called liquid glass.
  • Silicone (polymer), made on the basis of synthetic silicone resins.
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Variants of mixtures are also distinguished for their decorative qualities. The most famous are "bark beetle", "fur coat" and "lamb". Recently, "pebble" and "mosaic" plasters have become popular, which allow you to create an unusual and even sophisticated design of facades and plinths of the foundation.

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Modern manufacturers produce decorative plasters on various bases: they contain mineral, silicone or acrylic binders. However, regardless of the type of base, having the general name of the mixture, form a similar texture of the coating due to the presence of the same decorative fillers in the composition.

Terrazite plaster, which is widely used for decoration of facades, which is based on a mineral mixture, looks especially attractive due to the inclusion of additives such as marble, glass and mica.

The facade is covered with decorative terrazite plaster, reflects and refracts the sun's rays, this visual effect looks very advantageous.

To insulate the walls from the outside, vermiculite plaster is used, which contains a bulk filler - vermiculite, due to which the thermal conductivity of the walls covered with this composition is noticeably reduced.

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Application area

A private house, the facade of which the owners wish to plaster, can be built from various materials: from monolithic concrete, brick, aerated concrete, wood or stone. For each type of wall, you must select the appropriate type of plaster mix.

There are facade plasters that are applied over insulation materials and are perfectly fixed to mineral wool, polystyrene and expanded polystyrene.

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Based on the recommendations of the manufacturers indicated on the packaging and the practical experience of professional builders, the following recommendations can be made:

  • On mineral substrates (including gypsum plasterboard and mineral wool), silicate plaster will adhere perfectly.
  • For gas and foam blocks, bricks and concrete, all types of plasters are suitable, however, it is worth considering the fact that some manufacturers, for example, Ceresit, produce a mixture that is most adapted to work on aerated concrete.
  • For external wooden walls or OSB boards, gypsum compositions are contraindicated. The use of a cement-sand mixture is recommended. Acrylic facade coating and some types of silicone or silicate plaster are also used for wood.
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  • Ventilated facades with insulation can be plastered with silicone, acrylic and silicate compounds, not forgetting the need to use appropriate primers and building mesh to ensure maximum adhesion to the substrate.
  • Even a metal surface, for example, a channel, can be plastered, the main thing is to clean and degrease the metal well, fix the plaster mesh to the surface and be sure to prime it before applying the composition.
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Consumption for 1 m2

Facade decoration work should be divided into 2 stages:

  1. Aligning the walls.
  2. Application of decorative finishes.
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Using facade plaster, an experienced craftsman, when leveling the wall surface, is able to eliminate significant differences and hide small defects. However, in these cases, the consumption of the mixture increases, and calculating the required amount is not an easy task. To facilitate the calculations, it is customary to initially calculate the consumption of the plaster mixture per 1 m2. This task is performed by installing beacons. There are several ways to install beacons, but the most convenient for this purpose is to use steel corners ranging in size from 35 mm to 60 mm and a plastering rule.

First, a rule with a built-in level determines the deviation of the wall from the vertical. Then a plaster mortar is prepared, which is applied to the surface of the corner. The corner is pressed against the wall and leveled, in the necessary places placing a solution under it.

The higher the lighthouse is, the more mortar will have to be spent on leveling the wall. The next beacon is installed at a distance of 130 cm (in the case when the master works with a one and a half meter rule).

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The vertical between the beacons must be checked by level, the rule should not knock on the beacons, and there should be no gaps between it and the beacons. The more often beacons are installed, the more accurately it will be possible to calculate the arithmetic mean value, and determine what the mixture consumption should be to equalize 1 sq. m. When the beacons are installed, it is necessary to measure the maximum and minimum layers. The minimum layer starts from 5 mm (the thickness at which the lighthouse is covered with mortar), the maximum can be quite significant and depends on the curvature of the wall. Between these indicators, the arithmetic average of the thickness of the plaster layer is calculated.

On the packaging of any plaster mixtures, the approximate consumption required for applying a 10 mm coating layer is always indicated. Based on this value, the required flow rate is calculated for each specific case. For example, if the average thickness of the plaster layer is 25 mm, then the figure for the consumption of the mixture indicated by the manufacturer should be multiplied by a factor of 2.5.

The decorative coating, which is applied over the leveling plaster, most often has a thickness of no more than 10 mm, so its consumption corresponds to the value stated on the package.

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Application technology

There are several ways to apply facade plaster, for example, one of the very attractive options is cladding a building with decorative corner finishes. However, such sophisticated options require the involvement of professionals with experience to complete. For a beginner plasterer who wants to do this work with his own hands, such an option as a simple facade decoration under a "fur coat" is more suitable.

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Before applying the decorative finishing plaster mixture, the walls must be leveled. For this, inexpensive mineral plaster is usually used, which is sold dry. The preparation consists of the following steps:

  • When working with dry mixes, it is initially required to dilute the composition, for which it is better to use a construction mixer. It must be remembered that when mixing the plaster composition, the dry mixture should be poured into the water, and not vice versa.
  • For plastering wooden facades, surfaces with insulation and buildings subject to significant shrinkage (for example, new buildings), a facade mesh is installed on the surface, which is fixed with screws or nails.
  • Then beacons are set that allow you to determine the curvature of the walls. After installation, the beacons are fixed with a solution until completely dry.
  • The surface must be primed for the best adhesion of the plaster layer to it.
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  • A plaster mortar is thrown onto the wall, this can be done with a trowel, a plastering bucket or a spatula. It is necessary to adhere to the layer thickness recommended by the manufacturer (usually 30 mm).
  • Using the plastering rule, the solution is raised, achieving the most even result.
  • While the mass is elastic, defects are corrected and seams are smoothed. These works are performed using a grater and a spatula.
  • When the material has matured (approximately 4 hours after application), it is necessary to dismantle the beacons, which can subsequently give off rust. To do this, cuts are made on both sides of the lighthouse with a spatula, after which the strip is carefully removed.
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  • Sinks left after removing the beacons must be repaired. To do this, they are swept with a brush, moisten the surface with water and putty.
  • The surface is impregnated with a primer, taking into account the peculiarities of the subsequent decorative composition.
  • After applying the plaster, it is necessary to provide comfortable conditions for its drying within 24 hours (the temperature should not be lower than + 5 ° C, and there should also be no direct contact with water and the scorching rays of the sun).

The execution of a decorative coating directly, for example, such as a "grated fur coat", is carried out only after the leveling layer has completely dried. The time required for this is individual and depends on the final layer thickness.

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Facade decoration work includes the following stages:

  1. Covering. You can use a spray brush to apply the hand finishing "fur coat"; in machining, a device such as a large nozzle and funnel pneumatic gun connected to a compressor can be used. When using a ready-made mortar, the covering procedure should be carried out 2 times, with pauses allowing the mortar to "grab".
  2. To perform the coating known as "Grated fur coat", the surface of the facade wall is polished using a special float with a steel surface. Sanding movements should be light, only the ends of the surface are smoothed.
  3. Calibration until the final pattern is reached carried out on a dried, but plastic surface. This work is carried out with pressure, while the movements should be wavy.
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For information on how to apply a "fur coat" to the facade, see the next video.

Tips & Tricks

Carrying out work on finishing the facade with plaster is a rather time-consuming process that requires not only physical strength, but also practical skills. It is with this that the high cost of such work is associated, and therefore it is natural for home owners to want to try to plaster the facade on their own.

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Novice plasterers who do not have experience in this work should experiment on non-critical objects, for example, garage walls, before you take on the decoration of the facade of the building and listen to the recommendations of experts:

  • Facade finishing works are carried out at the final stage of construction, after the installation of the roof, window and door blocks. In order not to stain windows and doors with mortar, protective screens should be installed.
  • External plastering work should not be carried out in winter, as well as in rainy weather and under the rays of the scorching sun. The optimum temperature is between + 5 ° C and + 35 ° C.
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  • When working with dry mixtures, you should not prepare too large a portion of the solution at once, since it has time to "grab" within an hour and the unworked volume will become unusable. The remnants of the set solution must be thrown away, it makes no sense to dilute them again.
  • The metal reinforcing plaster mesh should not be confused with the chain-link construction mesh.
  • In cases where there is no significant height difference on the wall (less than 20 mm), you should not waste time on mesh reinforcement.
  • With a layer thickness of more than 50 mm, the use of a reinforced fiberglass mesh is required for reinforcement. The application of each subsequent layer is permissible no earlier than 4 hours after the previous one.
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  • By using a polymer mesh for plastering, you can avoid the risk of oxidation (rust), which is especially important when finishing facades with a thin layer of mortar. It should be remembered that the polymer mesh is very elastic, therefore it can stretch when the solution is applied, accordingly, you need to work as carefully as possible.
  • Non-professionals should not use mechanized spraying equipment.
  • You can create a texture on the surface of the final layer using a special roller or brush.
  • Do not neglect the priming, which will make the coating more uniform and fix it.
  • If, as a result of work, stains, stains and other troubles remain on the surface of the wall, they can be painted; acrylic or silicone-based dyes are most practical for tinting facades.

In the event that the finishing is planned on the surface of the insulation (penoplex, polystyrene), you should not risk it and carry out the work yourself. It is better to invite masters - professionals in their field.

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