Currently, plaster is considered one of the most popular finishing materials for interior surfaces of ceilings and walls.

Technology has stepped far forward, and not so long ago, shingles for plaster were used to strengthen the surface of walls. Nowadays, construction reinforced painting mesh for plaster is widely used.

1 Application features and types

The mesh for plaster is used to securely attach this plaster to the wall; its thickness can be different. The presented wall finishing technology involves the use of those products that have a certificate of conformity.

As a rule, their typical size and aspect ratio is 10x10 mm. Such a mesh, measuring 10×10 mm, is attached to internal surfaces walls can be done quite simply and without much difficulty. Plastering mesh, which has an appropriate certificate of quality or conformity, is used to fasten or reinforce walls from the inside of a building.

In this case, the thickness interior walls is not decisive, but The mesh for plaster performs its fastening function. In most cases, the mesh for plaster has dimensions of 10x10 mm. Before you start using it, you must make sure that you have an accompanying document such as a quality certificate.

The thickness of the product may vary within small acceptable limits. Such a product is used for plastering on the wall and must have a certificate.

This certificate confirms the product’s full compliance with all standards and requirements. It should indicate the thickness and dimensions(for example 10x10 mm). Such products can be made using polyurethane or metal, and should be attached to the wall after reading all the relevant instructions.

In this and similar cases, the thickness of the walls does not affect the quality and pace of work performed. Fastening a product with dimensions 10×10 is done using special adhesives, self-tapping screws, screws, as well as other devices, the use of which is permitted by the certificate.

The thickness of the products, in this case, must correspond to the technological conditions. For the most part, the mesh is sold in the form of rolls and can have different sizes, the most common among them is 10x10 mm.

When purchasing, be sure to pay attention to the quality certificate. Depending on the method of applying plaster to the surface of the walls, fastening metal or analogues can be carried out with an orientation towards different ways implementation.

The certificate for metal products may differ from the same document relating to plastic products.

That layer of plaster on the wall, which is called the bottom layer, is reinforced with the participation of the selected mesh product immediately on top of the already applied mortar. The applied solution must have required thickness and press the mesh lightly. The certificate reflects all these production points in their respective paragraphs.

The most acceptable option during which the last decorative layer will be applied will be the one during which the reinforcement will be attached to the wiped and dry surface using special devices.

The certificate allows the use of such technologies. In the case where the surface of the walls being treated does not have a large area, the plaster mortar itself can act as a fastener to the wall.

At the same time, it should be applied to the surface of the walls to be treated in a dotted manner - this will help securely fasten the mesh.

After completing this action, the entire thickness of the plaster layer is spread evenly over the entire surface area. Currently, there are a number of types of products presented, among them it should be noted:

• universal (small);
• universal average;
• universal large;
• fiberglass mesh;

• plurim mesh;
• armaflex;
• syntoflex;
• steel;
• galvanized.

The presented types of products are distinguished by a wide range of functionality and exhibit a high degree of resistance to exposure high temperatures and harmful chemical exposure.

Some of the presented species are characterized by their chemical inertness and can be used for both external and internal finishing works. These products are distinguished by the presence of artificially reinforced components and are used in areas where they are subject to increased load.

2 Which mesh is best to use?

When choosing the presented products, the primary parameter is the value of its thickness. Before carrying out work, the lowest point located on the ceiling is located, and then its mark is made using a laser or building level.

After carrying out such manipulations, it will be possible to assess the maximum thickness of the plaster layer, which will subsequently be formed. After a certain result is obtained, a series of specific actions are performed.

In the case when the plaster thickness parameter will not exceed the value equal to 20 millimeters, provided there are no rusts at the ceiling base, a plaster layer can be applied.

After this, you can proceed to installing beacons. If there are rusts on the ceiling, or the leading layer is 20-30 millimeters thick, it would be most rational to use a mesh product made using fiberglass.

This is due to the fact that the main purpose of the presented meshes is to protect the entire surface from the formation of cracks.

If the layer has a thickness of 30 millimeters, then it should be applied.

It will be able to highly effectively prevent peeling under the influence of its own weight.

If the ceiling is uneven and the height differences are more than 50 millimeters, then plaster will need to be abandoned altogether.

2.1 Technical nuances of installation and application

When purchasing such a product, you need to take into account the fact that the cell size should be slightly larger than 5x5 millimeters, with a density value of 110 to 160 g/m².

In most cases, the presented material must have a quality such as resistance to the harmful effects of alkalis. At the same time, the indicator minimum thickness the plaster layer when using a mesh made using fiberglass should be equal to 3 millimeters, with a maximum value of 30 millimeters.

Before starting work, the product must be trimmed in accordance with the proportions and dimensions of the canvas itself. The size of the canvas will directly depend on the location of the grid. It can be longitudinal or transverse.

If there is rust on the ceiling, then the mesh is located there as one solid sheet with orientation to the location of each of the seams. In the case where there are no rustications, there will be no requirements for a special arrangement of products.

It is only enough that when performing work, all working surface will be evenly covered with the mesh.

It is best to trim with a margin of 10-15 centimeters in order to strengthen the existing seams located between the walls and ceiling. At the beginning of the work, the entire surface is covered with the very first putty layer. A plaster mesh is placed on top of it and slightly pressed in.

Next, the second layer is applied. According to the regulations, such an operation can be carried out in one go. Or you can wait until the intermediate layer dries. The fiberglass mesh is designed to be attached to the wall with screws or staples, and the plaster will go on top.

The presented method is applicable when it is planned to create a thin plaster layer. Then the product will be located right in the middle of the plaster layer.

If the layer thickness exceeds 10 millimeters, the mesh may slide to the edge, and not the plaster will be reinforced, but only its surface. The initial working stages are carried out taking into account the following algorithm.

Repairs, especially in secondary housing, are impossible without leveling various kinds surfaces, be it walls, ceiling or floor. The most suitable option for leveling work is to use plaster. This option provides not only leveling of the surface, but also heat and sound insulation in the apartment, which is often an important factor for residents. For a more reliable and durable leveling layer, it is necessary to use a special plaster mesh. It not only secures the leveling layer, but also prevents cracking and peeling of the material from the surfaces.

Peculiarities

First of all, it should be noted that plaster mesh is a universal material, the use of which is possible at all levels of construction and finishing. For example, it can serve as the basis of a wall panel, or it can be used as an adhesive layer when leveling surfaces. The purpose and effectiveness of its use will directly depend on the material from which this or that type of mesh is made, in addition, it can play a significant role design features different types.

Most often, plaster mesh is still used for outdoor work., it is an adhesive layer between the wall and the leveling layer of plaster. Better adhesion occurs due to the structure of the cells, which are inherent in all mesh surfaces; it is thanks to them that empty spaces are filled plaster mixture and its better adhesion to the leveled surface. And it is precisely thanks to this property that the result is an even monolithic texture.

Another feature and at the same time an advantage of this material is the ease of its installation, so leveling the surface with plaster and mesh is possible even for an inexperienced person. repair work to the master.

The solution sets securely, does not flow, and as a result forms a reliable, leveled surface.

Today, plaster mesh is used not only as adhesion when leveling surfaces, but also in other repair work. Thus, mesh is often used when installing a heated floor system. This material is a coupling for concrete screed, which covers the heated floor device. Metal mesh is often used to strengthen various types of structures, as well as in the construction of cages and pens. The mesh can also be used as a protective covering material.

The selection of its material directly depends on the thickness of the required layer of plaster. If serious leveling is not required, and the thickness of the facing layer will not exceed 3 centimeters, it is quite appropriate to use a thin fiberglass mesh. This is the cheapest option, which has the lightest weight, but at the same time perfectly protects the surface from cracking.

If the layer thickness is in the range from 3 to 5 centimeters, it is more advisable to use a metal mesh. It can not only strengthen the layer and prevent cracking, but also eliminate the possibility of peeling off the coating. If the thickness of the required layer exceeds 5 centimeters, ideally you should abandon leveling using this method, since even the strongest sealing mesh will not be able to prevent detachment of a layer of material that is too thick.

What is it for?

So that the plastered surface is as smooth as possible long term has retained its original appearance, so that unnecessary detachments, cracking and other deformations of the material do not occur, it is necessary to adhere to a special technology when facing work.

The technology consists of using a special bonding layer between the rough wall and the plaster that will be applied to the selected surface. A special construction mesh is used as such a layer. It is this that is capable of creating a strong adhesion between walls and plaster, eliminating cracking and peeling.

Before for outdoor and interior work They began to use special meshes made of various materials; for repairs, they used a reinforcing layer made of wooden rivers, as well as thin rods; later, a reinforcing mesh made of metal began to be used. However, this material was quite heavy, its installation was labor-intensive, so soon enough a replacement for metal was created and a soft and lightweight plaster mesh made of plastic or fiberglass began to be used for finishing the facade. This option is easier to use, absolutely anyone can handle it, in addition, plastic and fiberglass are more convenient to cut and are much lighter than wire options, but in terms of adhesion and strengthening of the finish they are in no way inferior to other materials used.

The use of plaster reinforcing mesh is advisable when:

• It is necessary to create a special reinforcing frame that will not allow the facing layer to crumble or crack, which can happen during the drying process of the material.
• It is necessary to strengthen the bond between two materials that have too different compositions. For example, without using a binder layer it is impossible to hope for successful plastering of materials such as chipboard, plywood, polystyrene foam, since such materials have a texture that is too smooth to adhere to the leveling mixture.

• You can use one of the materials to process joints or seams that are formed during the installation of any materials. For example, it is very convenient to process joints between sheets of drywall or other sheet options.
• You can also resort to using mesh during the installation of the waterproofing layer and insulation. A bonding layer is also often needed between these layers and the rough wall.

• The mesh structure is also good for better adhesion of materials when installing a heated floor system; it ensures compaction of the concrete screed used in the installation.
• In addition, the use of a reinforcing layer is also advisable during the installation of self-leveling floors. Connecting and strengthening functions will also be performed here.

Without strengthening, the layer of plaster may crack or begin to peel off; this is due to the fact that the drying process of the layer, which is more than 2 centimeters thick, occurs unevenly, resulting in zonal shrinkage of the material, which can lead to cracking and other coating defects. The mesh layer ensures more uniform drying of the material due to the special honeycomb structure.

The material in the cells dries much faster and more evenly, preventing structural changes both during the repair process and after its completion.

It is also worth remembering that such strengthening is necessary not only for internal work, because external walls are exposed to much more negative impact. Temperature changes, moisture, wind and other natural factors can ruin the cladding, so for this type of finishing it is advisable to use a reinforced version, which in specialized stores is called façade or mesh for external finishing work.

Types and characteristics

So, having determined why a plaster mesh is needed, you can smoothly move on to analyzing its possible types, as well as the pros and cons of one or another option. Today the construction market offers a huge number various types: serpyanka, wire, welded, polypropylene, painting, basalt, abrasive, plastic, metal, galvanized, fiberglass, steel, polymer, nylon, installation. It’s easy to get confused and choose something completely wrong.

When choosing, first of all, you need to understand that all the presented options are divided into those that will be used for interior decoration, and those that can be used for external facades. They will differ in strength and materials of manufacture.

The most popular materials include:

• Plastic. This material is one of the most durable options. Can be used both as a layer in interior and exterior decoration. This material is better than others for strengthening and leveling brick wall. Thanks to this combination, plastic mesh can often be found under the name masonry mesh, since it is often used in the process of laying walls. It allows not only to obtain stronger adhesion of bricks, but also to reduce mortar consumption, since the layer can be thinner.

• Another popular option is a universal mesh, it can also be used for both interior decoration and exterior work. However, the universal option also includes three subgroups, the definition of which depends on the size of the cells. Define: small, here the cell size is minimal and equal to the measurement of 6x6 mm; medium - 13x15 mm, and also large - here the cell size already has dimensions of 22x35 mm. In addition, depending on the type and size of the cell, the scope of application of a particular option will be determined. Thus, small cells are the most suitable option for finishing walls and ceilings in residential premises. The middle mesh is usually made of polyurethane, which provides it with additional rigidity and strength; its scope of use is also limited to interior work. But large cells can be used when cladding external surfaces.

• Most suitable for use on very textured surfaces is fiberglass mesh. This is one of the most durable and easy-to-use universal materials, which is also suitable for both external and internal finishing work. Reinforcement using of this type the lightest due to the fact that fiberglass is not a brittle material at all, which means that it is not afraid of even the most severe kinks and deformations. Thanks to this property, the material is almost the most popular option used in repair work. In addition, its cost is quite low and the payback will occur very quickly.

• Polypropylene is another popular option. Due to its lightness it is the most the best option For ceiling decoration. In addition, polypropylene is immune to various types of chemicals, which means it can be used in combination with a variety of mixtures and materials. Polypropylene mesh also comes in several varieties. The type is determined by the size of the cells.

For example, the best option for ceiling finishing is plurima - a polypropylene mesh with cells measuring 5x6 mm.

For the thickest layers, it is recommended to use a polypropylene version called armaflex. Thanks to reinforced units and cells with a size of 12x15, it is capable of withstanding maximum loads and provide strengthening to even the thickest and most textured walls.

As universal material The finishing is polypropylene syntoflex; it can have cell sizes of 12x14 or 22x35.

• Metal mesh does not lose popularity. The cell sizes here can range from 5 mm to 3 centimeters, but options with sizes 10x10 and 20x20 are more popular. The scope of application, however, is limited only to internal work, since the metal is extremely susceptible to external influences. natural factors and can simply become covered with rust even under a layer of plaster, which can ruin appearance facade, not to mention the fact that the material will lose its functionality.
• Galvanized mesh It can already be used for outdoor work, since it is not influenced by external factors.

Which one should I use?

It would seem that there is nothing difficult in choosing and installing this or that mesh; you just need to choose an option based on cost and purpose, but you should also pay attention to some nuances that can become the determining factor in choosing one or another option.

There are two main factors that will determine in choosing a suitable mesh for finishing. This is the material of the rough surface and the thickness of the plaster layer. This thickness will directly depend on the initial relief of the wall.

Depending on the wall material, the mesh material will be selected, as well as the method of its fastening. So, for cement, aerated concrete, concrete blocks and brick walls, fiberglass or plastic is better suited; fastening occurs using dowels.

On wooden surfaces, fastening occurs using galvanized self-tapping screws. Metal bases can only exist with a metal mesh, and the fastening process occurs using soldering with a welding machine.

For foam and paint, as well as for ceramic surfaces, it is better to use lightweight polypropylene, plastic or fiberglass.

Polypropylene often does not require additional fastening, it is easily attached to the wall by applying it, but it is worth considering that polypropylene cannot be used on very uneven surfaces, the so-called extreme ones, where a too thick layer of plaster is required.

In the process of determining the thickness of the layer required to level the wall, you must use a special tool - building level. With its help, you need to find the lowest point and, focusing on it, determine the thickness of the future layer of plaster.

Depending on the measurements obtained, you can also choose one or another option.

So, for layers of plaster lying within 2 to 3 centimeters, it is advisable to use fiberglass, plastic or polypropylene. If the layer is more than 3 centimeters, it is recommended to use a metal mesh, having first secured it to the wall, otherwise finished design It will be too heavy and will simply fall off under its own weight. In cases where the required layer becomes more than 5 centimeters, it is better to pay attention to other methods of leveling, for example, plasterboard covering. This will significantly reduce the cost of dry mixes and significantly speed up the process.

Another significant factor when choosing a mesh will be its density. The higher the density, the better the reinforcement.

Based on density indicators, all meshes can be divided into several groups:

• 50-160 grams per 1 sq. meter. The use of such a mesh is most common in interior decoration of apartments. The differences between these options are only in the size of the cells, which in itself has a slight effect on the reinforcement performance, and therefore depends only on the choice of the buyer.

• 160-220 grams. Such grids are an option for exterior finishing, they are not afraid of temperature changes and can withstand thicker layers of plaster; they can be used on extreme walls and other structures, for example, on a stove. The cell size here is usually 5x5 mm or 1x1 centimeter.
• 220-300 grams– reinforced mesh options. They are able to withstand maximum loads and extreme conditions.

It is worth remembering that the higher the mesh density, the higher its cost.

Installation

The nuances of installation will depend on the following factors: the material of the wall and its condition, the type of mesh, and the thickness of the plaster layer. Since fiberglass and metal are the most popular options today, it's worth looking at these examples for mounting.

Fastening technology metal mesh and further plastering of the surface is very simple. First you need to secure the metal cuts to the rough wall. This stage is necessary because the metal has a fairly large dead weight, and with plaster applied it will increase even more, which will lead to the collapse of the structure. It is also worth remembering that in order to install the grid on external facade, you need to purchase a galvanized version that will not be afraid extreme conditions existence.

In addition to the mesh itself, installation will require dowels and special mounting tape. You need to start attaching the mesh with measurements; this will help you cut the required sections and cover the entire surface to be treated.

On next stage it is necessary to drill holes for the dowels. The distance between the holes should be about 40-50 centimeters.

In addition, it is worth maintaining a checkerboard order in placement.

Installation starts with top corner near the ceiling, this option is the most convenient and correct. When screwing screws into the wall and thereby securing the material, it is necessary to use special washers or mounting tape, pieces of which must be placed under the screw head. In addition to self-tapping screws, it is possible to use dowel nails that are simply driven into the wall, which significantly speeds up the process. The mesh can be secured to a wooden surface using a regular furniture stapler.

If one layer of metal mesh is not enough, you can increase the volume; in this case, the overlap between the layers should be about 10 centimeters. Once the entire surface to be treated has been covered, you can begin coating with plaster.

Fiberglass mesh can be stretched in several ways. This is very comfortable material for interior decoration and can be used by a master with any experience. In addition, fiberglass is low cost and very easy to install.

Modern standards for finishing internal and external surfaces have very high requirements for aesthetics, durability and reliability of finishing. Mesh for plastering walls significantly improves quality, which generally has a beneficial effect on the final result. And although the reinforcing layer is not visible, it is it that ensures the stability of the structure, preventing the plaster from cracking.

In the article we will examine the questions: what type of mesh is used for plastering walls, what type is used in a particular case, and why the plaster layer should be reinforced.

Mesh for plastering walls, photo - types of cells

Reinforcing mesh for plastering walls - types and characteristics

Several are used in finishing work:, and various options mixtures with changing the proportions of components and adding additives to improve the quality of the solution. Reinforced grating is selected individually for each type of work. It depends on the:

• selected mixture;
• the material from which the surfaces are made –, etc.;
• operating conditions of the coating: external (, ), internal, in rooms with a difficult microclimate (unheated, bathrooms, etc.)

Reinforcing mesh for plastering corners

The following types of reinforcing gratings are most in demand on the building materials market:

• Masonry - plastic mesh for plaster, made of polymers, cells of standard size 5 * 5 mm, used in brickwork.
• Universal mini - made of polyurethane, cells 6 * 6 mm, suitable for both rough plaster and fine finishing work. Medium, cell 13*15 mm, for finishing up to 30 mm thick in small areas. Large with a cell of 35*22 mm - a mesh for plastering facades; it is used to reinforce large areas under a thick layer of plaster: external walls of houses, warehouses, etc.

Fiberglass mesh for façade plaster – universal for all types of work

• Construction mesh for plaster made of styrofiber, standard cell size 5*5 mm, tolerates chemical and thermal influences well, durable. This type practically universal, its use has no restrictions.

• Plurima polymer mesh for plaster, oriented on 2 axes, with a cell of 5*6 mm, lightweight, inert to chemical influences, used for interior and exterior work.
• Armaflex polypropylene grating, distinguished by reinforced nodes, mesh size 15x12 mm. Ultra-strong, used in areas where heavy loads are placed on the plaster.
• Syntoflex made of foam propylene, cell 14*12 mm or 35*22 mm, not afraid of exposure to chemical environments, light, durable. Suitable for plastering interior walls and facades.
• The steel grating is made of metal rods of different cross-sections, soldered into nodes, the cells range from small to very large, it tolerates mechanical loads well, but it should only be used for interior plaster, as it is susceptible to corrosion under the influence of atmospheric phenomena.
• Metal mesh for plastering walls, galvanized, made from rods of different sections, welded units, cell sizes are different. Universal for external and internal work, not afraid of difficult operating conditions.
• Chain-link is a metal mesh for plastering external and internal walls, under a thick layer, distinctive feature– wicker cells come in different sizes.
• Expanded metal mesh. It is made from a single sheet of metal, after cutting out the holes it is stretched to form diamond-shaped cells in a checkerboard pattern. Mainly used under thin layer.

Galvanized expanded metal grating

Selection conditions

The mesh for plastering walls is needed so that the solution does not peel off from the surface as much as possible, and cracks do not appear after drying. This is the skeleton that provides strength and integrity to the structure.

Advice: If the plaster is no more than 20 mm, then the reinforcing layer can be skipped.

If there are rustications on walls, ceilings, facades - depressions, grooves, recesses, usually reaching 30 mm, in such work, fiberglass reinforcement is most often used, which is used with a layer thickness of 3 to 30 mm and prevents.

If the thickness of the finish is more than 30 mm, it is advisable to use metal gratings; they will prevent the heavy layer from peeling off the surfaces. Metal mesh is very relevant for plastering uneven surfaces and when using .

Corrodes over time plastic mesh, it is usually applied under a small thickness. A canvas with a mini cell of 2-3 mm is used for finishing putty on the wall.

Welded grating for finishing brick surfaces

If previously shingles were used, now an alternative to it is chain-link mesh, which has proven itself over time. It is also actively used for finishing walls with insulation.

Fiberglass fabric for reinforcement comes in different densities; it is convenient because it is produced in compact rolls, applicable for walls, ceilings, and self-leveling floors. It is moisture resistant, which allows it to be used for swimming pools and to reinforce the roof with a water-repellent layer. The elasticity and strength of the material make it possible to use it for sealing gaps between slabs and sealing cracks in the plaster layer, in this case good decision will become serpyanka - self-adhesive tape different widths. Fiberglass fabric, due to its heat and frost resistance, is also used as façade mesh for plaster.

Reinforcement is required if the width of the slopes is more than 150 mm; with a plaster thickness of up to 30 mm, fiberglass is used; a thicker layer is applied to metal gratings.

Important: The reinforcing frame must be integral, so each subsequent sheet is attached to the previous one with an overlap of at least 100 mm.

For plastering fireplaces and stoves, metal reinforcement is often used; it is nailed between the joints of the masonry. IN Lately In these works, a fiberglass sheet is often used, which is glued to the surface with a liquid solution. The choice depends on the thickness of the finish.

Mesh for plastering external walls: woven from galvanized wire, with a cell of 10 mm 2, chain-link – for large areas. Welded mesh façade for plaster – perfect solution for new buildings where the walls will shrink. If the thinnest layer of plaster is required, fiberglass, expanded metal and polymer mesh are suitable.

For a thick layer of screed it is better to use a metal grid

Plaster can both provide finishing and level the walls - this technology allows you to get the maximum flat surface, which has a whole range of operational properties. If during plastering a mesh is also used, which reinforces the applied layer, this means an increase in the strength of the plaster and is well reflected in the service life of the decor.

Applying mesh for plastering walls

The scope of application of reinforcing fabric is not only to strengthen the surface of walls - it is used to finish reinforced concrete foundations, plinths, and it can also provide reinforcement various floors in the attic and in the house between floors. There are quite a lot of operations in which reinforcing mesh is used, which makes it a very popular building material.

Scope and types of reinforcing mesh for plaster

In the recent past, the plaster layer was reinforced exclusively with wooden shingles. Modern construction industry offers users much more wide list materials with different performance parameters. The range of reinforced fabric for construction and finishing works includes products from various materials, which imply a wide selection of properties, and therefore application options.

Polymer

Plastic or, as it is also called, masonry canvas for plastering walls is made from modern polymers. It is characterized by high strength indicators, the thickness can be different, the shape of the cells is diamonds or squares different sizes, which led to the use of plastic sheeting in various areas of construction.

Variety of polymer meshes

As for the positive features, the following operational potential of plastic reinforcing mesh can be noted:

• Hydrophobicity
• Absence of corrosion and putrefactive processes
• Resistance to temperature changes
• Environmentally friendly - no toxins, does not cause allergies
• Elasticity - resistance to vibrations and mechanical loads
• There is no need to fix the canvas on the wall - just put it on the solution, which takes a minimum of time and will not delay the project’s delivery deadlines
• The mesh reinforces the plaster layer in the middle, which ensures uniform distribution of the reinforcement properties of the finishing layer
• Availability is one of the main positive features of this material, especially in comparison with other reinforcing material options.

As for the disadvantages, we can note:

• Limitation in the thickness of the plaster layer - the canvas can provide strengthening of the finishing layer no wider than 6-8 mm, otherwise the effectiveness of the reinforcement is reduced.
• Low-quality plastic, which can be used in the production of mesh, is not chemically resistant, and therefore interacts with alkalis and dissolves in them.

All these parameters have determined the areas of application of plastic mesh - it is used to strengthen the finishing of walls when plastering works oh, you can also use it to level walls, both internal and external.

Strengthening the finishing layer is no wider than 6-8 mm

It is also capable of ensuring adhesion, in particular, with polystyrene foam - the presence of a mesh in the cake eliminates the appearance of cracks and peeling of the plaster. You need to choose a material that is as rigid as possible large thickness cells - such meshes are also used when arranging the foundation; they are laid between layers, strengthening the cushion of sand and gravel on unstable soils.

The most popular version of polymer reinforcing fabric is with square-shaped cells and dimensions of 5x5 mm.

Fiberglass

The fiberglass reinforcing mesh boasts the presence of all performance characteristics plastic material. But unlike polymers, fiberglass exhibits chemical resistance, increased strength and higher tensile strength. The parameters of the fiberglass sheet largely depend on the size of the cells; also, to evaluate the characteristics of the mesh, the so-called density, which is measured in g/m2, is used. Based on network density, they can be divided into three groups:

• Density within 50-160 g/m2. Suitable for work inside the house. Meshes are divided into plastering and painting - the latter demonstrate lower density, and standard sizes The cells are respectively 2x2, 3x3, 2.5x2.5 mm. IN plaster sheets The cell size is significantly larger - the most popular options are 5x5 mm, the density of such a product is also higher.
• Density within 160-220 g/m2. — used for plastering and puttying on facade walls. The most common cell sizes are 5x5 and 10x10 mm.
• Density within 220-300 g/m2. - this mesh is used for the basement and underground part of the building. The use of reinforcement provides the finish with anti-vandal properties, since it is able to withstand severe mechanical and impact loads. Due to the larger amount of material used in the production of such materials, their price will also be higher.

Density within 160-220 g/m2.

In order not to be mistaken about the purpose of the mesh, it is worth understanding the rules for marking such material:

• C - network;
• CC - fiberglass cloth;
• N - exterior finish;
• B - interior decoration;
• Ш - for painting work;
• A - base anti-vandal;
• U - with amplification.

Manufacturers indicate information about the technical characteristics of the material on the packaging.

In production, fiberglass mesh undergoes a stage of increasing resistance to alkaline environment, which is relevant for putty and plaster solutions. To prevent the fabric from dissolving in a weak or medium alkaline solution, the fiberglass is impregnated with a polyacrylic dispersion, which reduces the aggressive effects of an alkaline environment.

This mesh is sold in the form of a 1m wide sheet, sometimes the material is sold in the form of cut rectangles. The material is actively used for reinforcing seams, corners, etc.

Metal

Metal facade mesh for plaster can strengthen not only the plaster layer, but also the walls themselves. This mesh is the most common option for finishing facades, plinths, and so on.

Can strengthen not only the plaster layer, but also the walls themselves

The choice of material is determined by its purpose, which determines the size of the cells, the thickness of the wire, and the method of fastening metal rods/wires:

1. When plastering, a woven metal mesh is used, the structure of which resembles the structure of fabric, only metal wire is used instead of thread. The main characteristics of this material are small cells measuring from 1 to 2 mm or more. The wire used for the manufacture of such networks is protected from corrosion destruction, and therefore can be made of either stainless steel or carbon steel, but with protection from a layer of zinc or polymers.
2. Chain-link is also considered in demand - due to the large cells, it creates a reinforcing relief layer that allows you to hold a thick layer on the wall finishing material.
3. Welded mesh made of wire rods welded to each other is also used to strengthen the masonry of walls, installation work, strengthening load-bearing surfaces, foundations, and so on.
4. Masonry mesh is another version of a metal reinforcing material that is used to strengthen walls, plastering works, pouring screeds, and so on.
5. Plaster network made of metal is used exclusively for plastering. It is made from hot-dip galvanized wire, and therefore is not susceptible to corrosion.

Installation of grids

The use of an assembly reinforcement network is advisable if the plaster layer exceeds 2 cm. When reinforcing, you can use any type of mesh under the plaster. Method of fastening the mesh during plastering. depends on the selected material.

Reinforcement of walls with fiberglass cloth

Since the lightweight mesh does not imply special fixation, the fiberglass sheet is attached with a solution and rubbed into the wall with a spatula. At the joints it is necessary to overlap the fabric, with an overlap of 150-200 mm. To speed up the process, before starting work, the mesh is cut into measured pieces, taking into account the required overlap.

If the network has traces of rust, it must be treated with a solvent

If the walls are different complex configuration, then you can secure the canvas with dowels, on wooden surface fastening can be done using a stapler.

Coating with polymer sheets

Fastening a plastic sheet is no different from fastening a fiberglass mesh. We also plant it on a layer of mortar and gently press it into it using a spatula. The material is attached with an overlap - one strip should overlap the other by 150 -200 mm. If necessary, you can strengthen the fastening with dowels or self-tapping screws.

Metal coatings

A metal mesh for plaster can provide adhesion to a sufficient layer of plaster of 2-5 cm. Since such a reinforcing fabric weighs quite a lot, it must be secured securely:

Methods for plastering meshes

Plaster is applied over a mesh in several layers:

• We install reinforced mesh on the wall.
• We perform the first layer with a regular cape - with a sharp movement of the hand, the solution is thrown onto the fence using a trowel. The consistency of the mixture should resemble sour cream. The result is a dense, durable layer of plaster. You need to wait until it sets - then you can start applying the next layer.
• The second layer of plaster is applied with a mixture of dough-like consistency. We carry out plastering from the bottom up, picking up the thrown solution and removing it using the rule. As you move the rule from bottom to top, you need to move it slightly and straighten it horizontally, which allows you to evenly distribute the mixture over the entire wall. We wait for the plaster to dry and remove the beacons, the places for which need to be sealed with mortar.

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A mesh for plastering walls is a product made of metal or polymers that is used to strengthen the surface created by plaster mortar. In most cases it is not required, but for external work or rough alignment very littered walls reinforced mesh for plastering it is simply necessary.

First of all, you need to decide. If it is less than 2 cm, then reinforcement can be abandoned, since the solution will be able to adhere to the wall on its own. For a layer thickness of 2-3 cm, lightweight products based on fiberglass or polymers are required. They will significantly increase the service life of the finished coating and also prevent it from cracking. For a layer thickness of 3-5 cm, a metal mesh under the plaster is recommended.

On a note! If, after taking all the measurements, it turns out that you need to apply a layer thicker than 5 cm, then it is better to abandon plastering and use drywall for leveling.

According to technology, the layer of plaster cannot be more than 5 cm, but some craftsmen make it even 8 cm, while strengthening each layer with reinforcing fabric.

Regardless of the layer, reinforcing mesh is necessary when finishing lightweight surfaces. cellular concrete(gas and foam blocks).

Types of plaster mesh

The modern construction market offers the following types plaster mesh:

Galvanized mesh for plaster

Choosing a mesh for plaster

Before answering the question: which mesh is better to use, you should pay attention to the layer of plaster that will be applied. Through laser level or hand tools find out the blockage of the wall, add to given value the thickness of the lighthouse and a little margin. The result is required thickness layer.

For small layers, lightweight polymer or fiberglass products are used, for large layers - metal mesh for wall plaster or reinforced polypropylene materials. The larger the layer, the larger the cell should be. If for 2 cm a light mesh with a cell of 5 mm is sufficient, then for 5 cm a product with a nest size of 3-5 cm is better suited.

The thicker the layer of plaster, the larger the cells should be

You should know! If you intend to use cement mortar, then the material must be resistant to alkalis; for gypsum solutions, the mesh can be of any kind.

IN last resort you need to pay attention to the cost. It is not recommended to buy expensive, heavy-duty products just in case; they will never pay for themselves.

Construction market offers a wide range of plaster mesh, but purchasing expensive products is not always justified

This material for plastering walls can be used with a layer thickness of 3 to 30 mm. The cell size should be from 5 mm or more, and the density of the product should range from 110 to 160 g/m2.

The first step is to cut the product into elements. The dimensions of the fragments depend on how many people are working (it’s easier for two people to apply a large part at once), and exactly how the material is positioned (lengthwise and crosswise). It is also important to leave 15 cm of margin to form an overlap with other fragments. After preparing the elements, it is necessary to apply the first layer of solution. A mesh is placed on it and recessed into the surface, after which subsequent plastering is carried out.

Installation of fiberglass material by embedding in a solution

In some cases, craftsmen attach the product directly to the surface to be treated using screws or self-tapping screws, and then plastering is carried out over the mesh. This method can only be used for decorative work and the layer thickness is no more than 1 cm. If the layer is thicker, the network will be too close to the wall itself, so the plaster will remain unstrengthened.

Ideally, the application of reinforcing material under wall plaster should look like this:

• Fragments are cut to the required length.
• The first layer of finishing material is applied and leveled to the dimensions of the mesh.
• A mesh is applied through the heads of the self-tapping screws that were previously screwed in for mounting the lighthouse profiles.
• Next, the next fragment of the wall is processed and so on until the end. In this case, the canvas should overlap.
• After this, the beacons are installed and plaster is applied to the product.

Installation of fiberglass mesh under plaster

On a note! The plaster should be evenly distributed over the entire area, and the material should be stretched from the center to the edges. When smoothing the edges of the mesh, it is necessary to hold them with a rule or a wide spatula.

Installation of metal mesh

Plastering metal mesh is used when it is planned to apply a significant layer of material. Craftsmen recommend choosing galvanized products with a cell size of 10-12 mm. This material is easy to cut with special scissors, weighs little, and does not rust.

When reinforcing walls with metal products, it is important to remember that they are first degreased, then washed with water and wiped.

Installation of metal reinforcing mesh under plaster

Installation instructions:

• First of all, the product is cut into fragments with metal processing scissors required size. It is important to take into account the fact that if there are rusts on the surface, then the mesh is applied in one piece along each of them.
• Install a 6 mm drill bit into the hammer drill and drill holes along the entire wall, retreating from the corners, floor and ceiling by 20 cm, while the pitch of the holes is 30 cm. Their depth is slightly larger size dowels
• Mount the dowels into the holes, after which, together with a partner, press the mesh to the surface and secure it with self-tapping screws. To increase the density of contact between the product and the wall, its edges are fixed polyurethane foam. The next canvas should overlap with the installed one. If the material lags behind the surface, you will have to make several additional holes.
• At the end, beacons are mounted on the wall and plastering is carried out.

Installation of beacons on reinforcing fabric

If the plaster layer is more than 3 cm, then it is necessary to additionally reinforce the surface. Let's say the first layer of 2 cm with a mesh was applied, after it dries, another mesh is attached to the coating, after which a layer of plaster is applied again, and so on with each additional layer, except for the decorative one.

On a note! If an expanded metal network is used, the layer of plaster depends on its thickness. If the rod thickness is 1 mm or less, a 5 mm plaster coating will be sufficient.

If a large layer of plaster is planned, then it would be rational to apply several layers and reinforce each one

It is important to remember that the durability of the repair depends on the quality of the materials used. You should not buy cheap products of unknown origin, but buying expensive Western-made products is also not always justified. In this case, it is better to opt for products from domestic enterprises.