Mesh for reinforcing facade plaster. Application of plaster mesh

Plaster is one of the most known species wall decoration. In order for the solution to last a long time and provide strength, it must be reinforced with a special mesh. In this article we will take a detailed look at the types of reinforcing mesh and tell you how to install them correctly.

Types of plaster mesh

Meshes for plastering walls can be made of metal or polyurethane. They are glued to the wall using glue, self-tapping screws or self-tapping screws. The canvas is sold in special rolls and has different dimensions, depending on the area of ​​the wall that is being plastered.

There are a huge number of types of plaster mesh for plastering walls. Let's look at the main ones:

How to apply plaster

Depending on the method of applying the plaster, the reinforcing mesh can be fixed in various ways. First plaster layer reinforced on top of the mixture, while it needs to be slightly pressed into the wall.

Advice! Before applying the last layer, we recommend securing the mesh with special devices. If the area of ​​the wall being treated is not too large, you can use the solution itself as fasteners. To do this, apply the mixture at the fastening points; you do not need to treat the entire wall.

Which one is better to choose?

When choosing a reinforcing material for walls, first of all evaluate the thickness of the future plaster layer. You need to choose from the following options:

Plastic version

When purchasing it for a wall, remember that the density must be greater than 110 grams per square meter and alkali-resistant. Minimum thickness layer is 3 mm, and the maximum is twenty. Before proceeding to work, the rolls must be cut according to the area of ​​the wall. They depend on the chosen placement method - along or across. If there are defects on the wall, it is better to place the material along the mortar seams. Make sure the entire surface area is covered. It is better to trim with a margin of ten centimeters to further strengthen the seams.

Plastic mesh fastening technique

The first step is to apply the first layer of plaster to the wall. Next, a plastic mesh is applied, and it needs to be pressed as hard as possible. Then a second layer of plaster is applied. There is no need to wait for it to dry; you can continue plastering immediately. The plastic mesh should be placed in the middle of the wall. It can also be used for finishing external walls.

Most often, screws or staples are used for mounting on the wall and then the processing is carried out. But this method is only suitable for a thin layer of plaster. In this case, the grid will be located exactly in the middle. If the thickness is more than 10 mm, then it should be placed on the caps of pre-installed beacons. In this case, adjacent panels will need to be overlapped by 10 mm. And only after this it will be possible to continue plastering the wall surface.

When working with plastic mesh, the plaster must be applied evenly. In this case, it is better to start from the middle of the wall, distributing the mixture in different directions. We recommend pressing the corners with a rule or a wide spatula.

Working with metal structures

This option is used if you plan to apply plaster more than 30 mm. The material is distinguished by its low weight, easy installation and, despite metal base, quite good protection against rust. But, unfortunately, installation of such a canvas is not suitable for outdoor work.

First of all, the metal mesh will need to be degreased. To do this, you can rinse it with water or simply rub it with a damp cloth. The installation process consists of the following steps:

You will need to apply the solution twice, and you can continue only after the first stage of plaster has completely dried. It is applied using a trowel, the plaster is pressed into the mesh so that the mixture reaches the wall itself. Next, it is distributed over the entire plane of the wall using a spatula.

Plaster mesh netting

The chain-link mesh, or as it is also called wicker, has a design with a cell diameter of two centimeters. This canvas is mainly used for reinforcing large areas or house facades. At the same time, the chain-link is perfect for outdoor work; due to its materials, it is well protected from weather influences. The method of mounting on walls is no different from metal installation. It is quite light, so even a beginner can easily cope with such work.

Conclusion

As you can see, the reinforcing mesh has a positive effect on strengthening the wall surface. It will protect the plaster from possible peeling. This material can be used for both internal and external external works. The installation itself will not take much time and effort, because the process is quite easy. The main thing is to follow the instructions given in the article, and the result will not be long in coming. We recommend watching the training video:

The mesh is a rolled building material used to reinforce internal and external surfaces for various purposes. The maximum effect is observed in new houses that have not yet gone through the shrinkage stage, but in a number of works it cannot be done without it. The cell sizes, diameter and base are different; in each individual case it is important to choose the right option.

The material is used to strengthen the working coating, protect the applied mixture from delamination and cracking, and prevent deformation of the finish. Its installation significantly reduces the influence of mechanical, humidity and temperature influences and increases the quality of adhesion of solutions to substrates. Plastering walls on a grid (and other surfaces) is considered mandatory when:

• External façade cladding.
• Reinforcement of floor screeds.
• Finishing smooth tile building materials with low adhesion, such as polystyrene foam.
• Strengthening areas with a high risk of plaster shedding: openings, slopes, joints.
• Thick-layer application of the solution (over 2 cm).
• High risk of building shrinkage.

Types of meshes, features and applications

The base material must be strong, alkali-resistant, as light and durable as possible; steel, plastic and fiberglass have suitable characteristics. Hardware Depending on the manufacturing method and type of fabric, they are divided into thin and flexible woven (with a small wire diameter), braided, welded (the most rigid, recommended for high mobility of the base) and expanded metal, obtained by cutting holes in a stretched sheet.

Depending on the rental used, they are all divided into types from stainless steel and galvanized and non-galvanized wire. When using them as a mesh under plaster, it is worth choosing a protected type, with a zinc coating; it better withstands the alkaline effects of cement and is less susceptible to corrosion.

Fiberglass fabric is made from strands of molten glass and is impregnated to increase strength, flexibility and resistance to moisture, alkali and biological influences. special compounds. It is the thinnest, it is recommended to choose it when finishing, applying a rough or finishing layer within 2-3 cm, arranging warm and self-leveling floors. TO characteristic properties Also include high thermal stability (up to 1500 °C), this plaster mesh tolerates temperature changes well. Purpose fiberglass is determined by the size of the cells (for interior works It is advised to buy a 2x2 m canvas, for facades and exteriors - 5x5).

The polypropylene-based variety is universal, its advantages: lightness, compactness, strength and affordable cost. The specific option depends on the size of the cells: small (up to 6 × 6) is used for reinforcing thin-layer plaster (up to 20 mm), medium (13 × 15) is recommended to buy when reinforcing coatings up to 5 cm thick, including loaded ones, large (22 × 35) – when working with large surfaces and uneven facades. This group includes many subtypes and brands: Plurima (based on polypropylene with high chemical inertness), Syntoflex (ultra-strong and geometrically stable brand), STREN (recommended for use under the influence of aggressive environments), Armaflex (reinforcing any type of masonry, including uneven ones). Price square meter depends on the quality, chemical inertness and strength of the plastic and varies from 11 to 110 rubles.

Which mesh should I use and in what cases?

The main determining criterion is the thickness of the applied solution; when working indoors, a reliable foundation and thin-layer leveling (up to 20 mm) can be abandoned. When facing facades, reinforcement is always carried out: metal mesh reinforcement for plaster it is selected when the wall level deviates by more than 30 mm, and if there is a significant risk of destruction of the base or shrinkage of the building, it must be welded. In other cases, to cover standard masonry, fiberglass or plastic with a density in the range of 160-300 g/m2 is sufficient. Smooth foam boards that insulate the facade are recommended to be finished with light fiberglass.

It is better not to skimp on external surfaces; these areas require varieties coated with zinc or impregnated with alkali-resistant compounds. To eliminate doubts, the material is checked by immersion in soap solution for several days, high-quality products do not spread and do not change color. When purchasing façade mesh, attention is paid to the breaking load value. On flat areas a blade with 1800 N and above is used, on curved ones - in the range of 1300-1500.

When finishing interior spaces The same rules apply - a thick-layer coating requires reinforcement with metal, a thin-layer coating with fiberglass or polypropylene. The latter type is also used as masonry: an elastic fabric with 5x5 cells is placed between bricks or blocks and increases the adhesion of rows and products. Recommended density range for synthetic mesh under interior plaster is 110-160 g/m2, this is enough to ensure crack resistance and keep the layer within 2-3 cm. For sealing joints of building boards (plasterboard, fiberboard or chipboard), strengthening window openings and areas adjacent to the ceiling, reinforcement of mastic roofs, serpyanka is well suited - thin fiberglass with a cell size of 2x2 mm and a density in the range of 45-60 g/m2.

The nuances of installing a mesh with your own hands

The metal variety weighs the most and requires secure fixation with screws or nails. It is degreased (galvanized steel is simply washed with water or wiped with a rag) and cut into pieces with special scissors the right size taking into account the obligatory entry into neighboring areas by 10 cm. In some cases, holes for dowels are prepared in advance, the step is 25-30 cm, on average 16 fasteners are used per 1 m2. If possible, the edges are fixed with mounting tape (when working with large-mesh options, its use is mandatory).

It is better to finish metal-reinforced surfaces in two layers (not counting the spray), the second, thinner and leveling one is applied after the first has dried slightly. This type must be reliably covered with the mixture; it is important to choose the correct cross-section and method of connecting the wire; the thickness of the coating cannot be reduced below the recommended value.

When working with fiberglass and polypropylene meshes for plaster, the mortar itself or self-tapping screws can act as fastening materials. In the first case, the canvas is placed in the middle of two layers; to increase density, it is better to unwind it directly on the spot, rather than cut it into separate pieces (the exception is the finishing of foam plastic, where segments are better suited). Plaster in the direction from the middle to the edges.

During the process, it is important to prevent the formation of air bubbles and avoid stretching of the plastic mesh.

But the more reliable and correct option is to fasten the dowels to a still dry wall, followed by spraying and applying the first layer as a base. The number of fasteners is minimal (one per canvas with a uniform step of 1-2 m), with a significant level difference they are used for installing beacons. The first layer of mortar is placed along the width of the product; after laying it, they proceed to the adjacent one, tracking the overlap of 10-15 cm with each other. Plastering for the purpose of leveling should also be done from the middle to the edge. Avoid sudden movements with a spatula, especially when working with facade mesh, otherwise they will come off along with the finishing composition. Correctness is checked visually - if they are visible under the leveling layer, then it is better to increase it by 1-2 mm.

Material cost

When facade plaster on a grid is used for finishing, the technology of the procedure must be followed to the smallest detail. The quality of the facing work depends entirely on how well the appearance structure, and its protection from adverse weather influences. How less wall the building will be exposed to adverse external influences, the longer its service life will be.

Why reinforce plaster?

Due to its availability and low price, plaster acts as a sufficient popular material for finishing buildings. But we must take into account that it is not applied equally conveniently to all surfaces. Facades made of wood, concrete and brick should be plastered using a special mesh.

The addition of this material provides the layers with high-quality adhesion and helps the finish last longer.

Plaster facade mesh significantly increases the strength of the prepared plaster mortar, which is especially valuable when working with large areas and transitioning from one material to another. Plastering the facade using mesh allows you to improve the efficiency of work during the construction and finishing of new buildings, whose walls have been settling for some time.

Plaster layers can be reinforced using polymer, metal, fiberglass and other types of material. Its selection is determined by the characteristics of the application.

What are the types of reinforcing mesh?

The finishing layer of plaster, after being applied to the surface of walls made of brick, concrete or wood, often cracks and can peel off from the base. Reinforcing surfaces using a special mesh helps avoid this problem. Auxiliary materials for finishing they differ according to the type of raw materials used for manufacturing:

1. The woven mesh is flexible and very durable material with a small thickness. It is made from wire of a certain cross-section, which is woven into a single fabric. The woven facade mesh for plaster is equipped with a zinc coating and has square cells of 1x1 cm. The material is produced in rolls.
2. The chain-link mesh has a larger cell size than the previous version. It is used in cases where the coverage area is very large. It is only suitable for processing an absolutely clean facade that does not have a relief coating, so surface preparation should be carried out with special care.
3. In the welded variety, the cells are square in shape. The material is made using spot welding at the intersection of wire rods. They are distributed perpendicular to each other, then the connection is made. The material used to make the mesh is low-carbon wire, light-colored, coated with a layer of polymers or galvanized. To prevent cracking of the finishing layer due to the active shrinkage process, welded mesh will do in the best possible way. It is most convenient to use material with cells of 2–3 cm.
4. The expanded metal mesh for the facade is made from metal sheets using special pressing equipment. Its cells are obtained in the shape of rhombuses; their arrangement is staggered. It applies if per 1 sq. m area, a small amount of plaster is planned. The material is produced in rolls, the width of which is 1 m.

If the layer of plaster is very thin, then use a material made of polymers or fiberglass.

How to perform plastering work on a façade using metal mesh

Starting finishing works, it is necessary to take into account that the facade metal mesh under the plaster is laid under a layer of finishing mortar with a thickness of at least 3 cm. The work process consists of the following stages:

1. All surfaces that require mesh plastering are primed.
2. The height of the facade from the roof to the ground is measured. Then, based on these values, pieces of material are cut.
3. The mesh for plastering the facade is located on the surface of the wall; the pieces overlap. For fastening you will need screws and a screwdriver.
4. After measures have been taken to strengthen the façade mesh, you can begin preparing the finishing mortar. An antiseptic drug is added to it.
5. Plastering the surface of the building must begin from the bottom. Apply the solution using a spatula; To level the layer, use a rule or a spatula of a suitable size.
6. When the first layer has dried, the next one is applied. It should be more subtle. After applying it to the wall, the mortar is leveled using a spatula.
7. The finishing of the facade is considered complete when the reinforcement is completely hidden under a layer of mortar.

If, after completion of the work, unevenness is noticeable on the surface, or the color of the dried solution seems too dull, then additional finishing can be done. Irregularities are puttied, cleaned, and then painted.

Plastering the facade using a polymer mesh

Polymer reinforcement has a very valuable quality: it successfully resists deformation of the plaster layer.

Thanks to your chemical properties it cannot react with oxygen, so rust does not form.

The plastering work procedure is similar to the previous version. But there are also some features:

1. Fastening is often carried out by pressing staples or nails into the plaster layer. For fixation, you can use a construction stapler if the wall material allows.
2. The plastering process should begin not from the bottom, but from the middle of the polymer mesh. Then the plaster layer is distributed in each direction, gradually approaching the edges. The movements are performed in the same way as when gluing wallpaper, when the air is expelled from under it.
3. It is necessary to carefully ensure that the mesh does not stretch during the finishing work. Polymer material It is elastic, so when working you need to carefully monitor it so that it does not form bubbles.

Plastering facades using insulating materials

When using wall insulation when cladding a facade, the same technologies are used that are used when applying the solution to an unobstructed surface. The mesh used is hidden with a layer of plaster and, if necessary, after drying, receives additional processing. The operating procedure is as follows:

1. A layer of foam plastic or mineral wool is attached to the façade using special glue or dowels.
2. A mesh is laid over the insulation and fixed with screws or plastic fasteners.
3. Installed plaster beacons- they help control the smoothness of the finish.
4. The plaster layer is applied so that it does not reach the ridges of the beacons a few millimeters; then leveled.
5. The next layer is applied after the first has dried and is thinner. It is leveled using the rule, and you should rely on the beacons.

When plastering on a grid, you must carefully select each of the materials - the layers must interact well. It will be necessary to compare the indicators of their vapor permeability and hygroscopicity, thermal conductivity, and frost resistance. Careful attention to materials will ensure a long service life of the finishing layer and help maintain the performance properties of the insulation.

How to finish the plaster layer

The most common method of execution finishing coating for external and interior walls After plastering it can be called painting. Before performing this stage of work, it is necessary to conduct a rigorous assessment of the condition of the coating. Check the quality of the base and repair cracks if necessary. Try to determine how strong the connection of the plaster layer with the surface of the building is. Plaster particles should not fall off, and the layer should be uniform.

Putty the walls. After the putty layer has hardened, sand the surface using sandpaper. Before applying the coloring agent, additionally treat the area with a primer. water based. Choose your coloring composition carefully.

A fresh finishing layer usually contains a large amount of alkali. Therefore, you should not choose solvent-based formulations. When working with soluble organic compounds Be sure to protect the surface with a synthetic primer.

The most convenient tool for painting is to use a roller.

Work the surface carefully, not skipping any areas. You can apply the 2nd coat of paint only after 1 has completely dried. To paint a plastered facade, it is better to use acrylic paints; Alkyd and latex are suitable.

When plastering using facade mesh, good adhesion of materials is ensured.

The finishing layer is visually attractive due to the use of polymers and increased service life of the material.

So that the work carried out could give maximum effect, it is necessary not only to decide which mesh to choose for a particular surface, but also to carefully consider the properties of each of the materials used for finishing.

Carrying out work on plastering surfaces is an important and responsible task. Must be observed the right technologies, which will allow you to securely fasten the material to the wall without unnecessary difficulties so that it does not peel off under any circumstances.

Reinforced mesh for plaster is best suited for solving this issue, since it can be used to create a special layer that, on the one hand, will improve adhesion to the wall, and on the other, will allow the material to be securely fastened together. This approach is used when performing large quantity construction work, and he proved himself only with the best side. So they use it everywhere and are always satisfied with the result.

What is a mesh for plastering walls?

The reinforcing mesh for plastering walls fully corresponds to its name and is a special product that has small cells that make it possible to effectively contain the solution so that it does not fly apart in different directions and sticks to the wall as firmly as possible.

The following varieties are distinguished:

• . masonry mesh, which has cells measuring 5x5 millimeters and is used with brick walls. Made mainly from polymers;
• . universal mesh, which can have different cell sizes and is used in all types of work where it is necessary to cover large area;
• . fiberglass mesh, which has a cell size of 5x5 millimeters and is highly resistant to any type of chemical attack, and also easily tolerates high loads that can be detrimental to other materials;
• . Plurim mesh, made of polypropylene and having a lightweight weight, which makes it easy to use without greatly increasing the load on the walls;
• . armaflex - polypropylene material with reinforced nodes. It is used in those types of work where it is expected increased level loads;
• . syntoflex - has “immunity” to chemical and mechanical impact;
• . steel mesh - is one of the most durable models, but is not suitable for outdoor use due to low resistance to precipitation;
• . galvanized mesh - is a modification of the previous model. With the help of special treatment, it has received protection against corrosion, so it is applicable for any purpose, including operation in conditions of high humidity.

The range of products is quite large, so you need to know how to choose the right material when purchasing. The sales consultant will try to sell the product that is beneficial to him, so it is better if the client himself understands the varieties.

How to choose a mesh for plastering work?

Inexperienced users often have the question of what mesh to reinforce the plaster with? Here everything will depend on the current working conditions, since there are not only universal models, but also narrow-profile products suitable for only one purpose. Therefore, you need to first consult with the experts or search for the necessary information yourself. The right choice is very important for further operation, so you need to take it very seriously.

Fiberglass reinforcing mesh for plaster is one of the best universal models, as it combines almost everything positive qualities which you must have similar material. It is not afraid of corrosion, since it does not contain metal elements, is not sensitive to moisture and temperature changes, and withstands mechanical loads well. Therefore, many professionals advise purchasing this particular model.

In any case, the reinforcing mesh for plastering walls has its own performance qualities should not be inferior to the base material. This is especially true for strength, reliability and durability. The base simply must stand for no less time than finishing material, otherwise all sense in its use is lost.

How to work with reinforcing mesh?

The reinforced mesh for plaster must be securely and tightly attached to the wall so that it does not disturb the correct balance that will be established upon completion of the finish. Its installation is carried out in stages according to the following scheme:

• . In the beginning work surface is divided into separate zones, each of which is marked a certain amount lighthouses. They can be calculated using a standard formula, the main indicator of which is the square footage of the wall being processed.
• . Next, using a drill, holes are drilled and reinforcement mesh fastenings for the plaster are inserted. They are quite standard screws, but with large diameter heads that will securely hold the mesh and press it against the wall.
• . Next, apply a base layer of plaster, without using a mesh.
• . After this, the mesh is put on the fastenings and tightened as much as possible. But do not overdo it so that the material does not burst from excessive stress.
• . On top installed mesh final level finishing work can be carried out. In this case, the plaster will lie smoothly and adhere without any problems. The main thing is to smooth it out well top layer to make it look beautiful.

The price of reinforcing mesh for plaster will depend on the type chosen. How larger size cells, so accordingly more expensive cost material.

Tsugunov Anton Valerievich

Reading time: 5 minutes

Alignment various surfaces using ─ one of the popular ways to prepare walls and ceilings for painting or wallpapering. However, the plaster does not always lie smoothly without defects. Some surfaces have low adhesion, so the solution applied to them begins to crumble and peel off. The destruction of the protective and decorative layer is especially rapid on the facades of buildings that are exposed to negative impact climate and moisture. Using a mesh for plastering walls, you can ensure strong fixation of the mortar to the surface and improve the quality of the finish.

Application

The mesh is used for external and internal work, and helps to achieve the following results:

• Increase durability decorative finishing due to proper load distribution and reducing its impact per 1 m2. The mesh is point-fixed to the base, and with its help the weight of the solution is supported.
• Avoid cracking of the plaster by reinforcing the surface layer. Walls and partitions made of blocks and bricks are prone to shrinkage and deformation. The reinforcing fabric gives the finish plasticity and prevents the appearance of cracks and other defects on the surface.

Types of mesh

To make the mesh, use different materials, which, along with other parameters, determine its type, characteristics and scope of application.

• Chainlink. Made from low carbon steel wire by weaving and is a fabric with square or diamond-shaped cells and a size of 20x20 mm2. To protect against moisture and aggressive substances, the mesh is coated with a layer of zinc or polymer. The chain-link is used for working on surfaces large area, including wooden or brick.

• Welded. It is made from steel wire, which is laid at right angles to each other, and then fixed at the joints using spot welding. As a result, a strong mesh with cells is formed square shape different sizes. It is used to strengthen plaster in case of strong shrinkage of walls, which is important for finishing new buildings or houses located on unstable soil.

• Expanded metal. Represents sheet material with diamond-shaped cells and is intended for reinforcing walls with low plaster consumption. Expanded metal is made by cutting holes of the same shape and size into a sheet of metal, which is then stretched and formed into a mesh for plaster.

If necessary, apply the solution as much as possible thin layer It is advisable to use a plastic or fiberglass mesh.

• Fiberglass. Indispensable for finishing ceilings, facades and walls if there are depressions, grooves and depressions on their surface. It is lightweight, durable and resistant to temperature changes, and can be used for facades. Fiberglass mesh is not susceptible to moisture, so it is used to reinforce roofs and plaster bathrooms and swimming pools.

• Polymer mesh. It is produced by extrusion from polymer raw materials, which is most often polypropylene. Using molding machines, the plastic melt is converted into a mesh fabric, the cell size of which is determined by the modification of the material. The plastic mesh is used to hold plastering works on the surface of facades and internal partitions. Since over time, a mixture of sand and cement destroys the polymer canvas, it is advisable to use it for finishing. A mesh with 2×2 mm2 cells is indispensable for applying finishing putty.

Mesh laying technology

Several types are used for finishing work plaster mixtures, which differ in composition, nuances of application and degree of impact on various materials. In addition, when choosing a grid you should consider:

• thickness of the applied layer;
• base material;
• conditions for finishing and operating the coating.

Metal

When choosing a metal mesh for reinforcement, you should give preference to galvanized mesh: it prevents corrosion and prevents the occurrence of rust spots on the walls. In addition, it is easy to cut and quite simple to attach to the surface. Before work, the metal mesh should be degreased, and the galvanized mesh should simply be washed with water. The formation of the reinforcing layer occurs as follows:

1. Using metal scissors, the mesh is cut into separate sheets, the size of which depends on the orientation of the material on the surface. If there are rusts, the reinforcing layer for plaster is placed along each seam as a single piece.
2. Drill holes with a diameter of 6 mm using a hammer drill. Their depth should exceed the length of the dowel by 2-3 mm, and the pitch should be 25-30 cm.
3. Insert dowels into the resulting holes, and then secure the mesh to the surface of the walls using mounting tape and screws. For reliable fixation, the canvases are overlapped, overlapping each other by about 10 mm.
4. The beacons are installed and the first layer of plaster is applied using a trowel. In this case, the solution must be pressed in such a way that it passes through the reinforcing fabric and is fixed on the surface. After which the finishing layer is evenly distributed over the surface of the wall or ceiling.
5. The second layer of plaster is applied when the first one has dried. If the basis is a façade with insulation, then it is advisable to use chain-link to reinforce the surface. It is also necessary when finishing wooden walls.

Plastic

If necessary, protect the plaster from cracking using plastic mesh. It is especially in demand in those cases interior decoration, when shrinkage of the base is possible. The algorithm of actions is as follows.