Reinforcing mesh for walls. Types of reinforcing meshes for plastering internal and external walls

Grid for plaster - the key to the durability of the work performed. Wall plastering is a traditional leveling and finishing technology. And not only - plaster is also performed for the purpose of fire protection and sound insulation, during repairs, as a decorative finishing layer or as a preparation for finishing ... but most often gypsum, cement-sand and lime plaster is needed, just as a finish. The use of mesh for plaster is an important condition.

Reinforcement of products from cement-sand mortars is a condition for their long-term operation, and the plaster layer is no exception. In order for the plaster layer to be durable and serve for a long time, it is reinforced by placing a mesh of plastic, fiberglass, steel inside, there are a lot of types and materials of meshes. And you need to choose a grid based on some conditions.

The use of plaster mesh

Although the technology is simple - a grid must be placed approximately in the middle of the solution layer, but there are some nuances. Two factors are important - the thickness of the plaster layer and the material of the surface on which it is applied. The most difficult cases are a thick layer of plaster - more than two centimeters, and a finishing surface that does not have good adhesion to cement-sand mortars, that is, metals, wood, and some types of panels. If either or both of these factors are present, then it is important not only to ensure that the plaster adheres to the wall, the reinforcing mesh must also be firmly fixed. It is not enough just to lay it in the plaster layer - the result of such work can be a solid layer of plaster that has lagged behind the wall in a single layer.

Fasteners for plaster mesh

The types of fasteners for meshes also depend on the material of the walls - to concrete and brick, although they have good adhesion, the meshes are fastened with dowels using large washers, to wooden walls - sometimes with nails, but it is better to mount on self-tapping screws. If you need to plaster a metal surface, choose one of the types of steel meshes, and then fix it by welding. The thicker the layer of the applied solution is required, the more powerful the mesh is needed, sometimes a chain-link is used. It is clear that thin woven metal meshes are not suitable in this case.

Inexpensive and common meshes made of fiberglass and polypropylene are used for plasters that are not extreme. The thickness of the applied layer is 15-20 mm, plus the surface material, which is combined with plaster solutions - and work can be done without fasteners.

Surface preparation for plaster

Surface preparation for plaster is very important. It does not matter whether the layer is reinforced or not - cleaning, dedusting, removing all old peeling finishes, as well as processing with penetrating primers or primers is a must. A properly prepared surface with good adhesion, a smooth wall that does not require a thick layer for leveling - if all these conditions are met, then a thin, strong and elastic mesh should simply be correctly placed in the body of the plaster layer. First, a layer of mortar of about 5 mm is applied to the wall, then the mesh is pressed into it with a wide spatula. The mesh with a small cell keeps perfectly in the solution. Then this first layer should dry, grab. And the last, finishing layer, made with the same plaster composition, finally levels the surface.

Brief overview of plaster meshes

There are a lot of stucco meshes, and more and more new ones appear, from a variety of materials. Gone are the days when there was only one way to reinforce plaster on the wall and ceiling - wood shingles. It also happened that they stuffed nails and pulled wire over them. But modern expanded metal and woven steel meshes, with and without galvanization, are undoubtedly stronger and more technologically advanced at times.

Plastic plaster meshes

They are used not only for plaster, but also for brick and block masonry with the same purpose - reinforcement. The strength of the meshes fully provides reinforcement to the masonry - the meshes have high tensile strength. The material is polymers, the cell is usually 5 * 5 mm, the release form is rolls. Technological, light in weight, and easy to cut, but very strong. Suitable for plaster layers with a small thickness - up to 20 mm.

Polyurethane plaster mesh with fine mesh

Universal, suitable for both walls and ceilings, for reinforcing thin layers from mortars of any composition. Cell up to 6*6 mm. Grids with a cell up to 15 * 15 mm are considered average.

Large polyurethane plaster meshes

They are used for mechanized finishing of large areas - warehouses, hangars, facades of public and industrial buildings, etc. cell 20 * 20mm, 30 * 30 mm, 35 * 35 mm, mesh is produced in rolls.

Fiberglass plaster mesh

In terms of strength, it has better characteristics than plastic meshes, withstands significant breaking forces. Another advantage that many types of plastics do not have is that fiberglass is completely chemically inert, and the temperature range of its use is practically unlimited.

Classification of fiberglass plaster meshes

Fiberglass meshes are divided into groups according to density - the higher the density in g / cm2, the stronger the reinforced layer.

For internal plastering, painting and plastering fiberglass meshes are used. The name painting speaks for itself - this type of mesh is the lightest and thinnest, with a density of approximately 45-55 g / cm2. The cell is small - 2*2 mm, 3*3 mm. Plaster nets for interior decoration have a higher density - up to 180 g / cm2 and a cell of 4 * 4 mm, 5 * 5 mm.

Fiberglass mesh for exterior decoration and facades. Density from 180 to 220 g / cm2, cells 5 * 5 mm - 10 * 10 mm.

Fiberglass mesh for plaster on the plinth

In addition to the plinth itself, they are also used for its part covered with soil. And also for plastering underground structures and elements. Very strong and dense nets, for extreme working conditions and heavy loads, are anti-vandal building materials. The price is much higher than for thin meshes. Density up to 300 g / m2, and this is not the limit. The mesh markings indicate the density and tensile strength, as well as the purpose of the mesh.

A feature of fiberglass is its weak resistance to alkaline environments. The main building finishing solutions are alkaline - they are classified as weak and medium alkali. Therefore, all fiberglass meshes undergo a special treatment - impregnation with polyacrylic dispersions. The result is long-term protection. Unprotected fiberglass cement mortar is able to dissolve, "eat" for a period of approximately from several months to several years.

Fiberglass meshes are produced both in rolls and in tapes with different widths. It is possible to buy them with a canvas, usually a meter wide, and even with ready-made fasteners from corners - for reinforcing horizontal and vertical corners. Tapes are used for finishing plasterboard and gypsum plasterboard cladding, and for other surfaces made of panels, sheets or blocks, including foam plastics and expanded polystyrenes.

Fiberglass meshes are used not only for plastering surfaces and strengthening joints between walls and blocks of windows, doors, ventilation ducts, etc. very popular.

Steel mesh for plaster

There are many types of metal wire meshes. Cell sizes are different, usually up to 50 mm. Steel meshes are intended not only for reinforcing the plaster layer, but also for strengthening walls. Steel mesh is used very widely - both indoors and outdoors, for reinforcing and decorating surfaces made of reinforced concrete and lightweight concrete, brick and stone.

Metal Woven Plaster Mesh

It is carried out by the method of weaving from wire, like fabrics from threads - twill and linen. The cells are small, from 2 * 2 mm to 15 * 15 mm, the release is rolls of a meter or 1.5 meter width. The wire is used galvanized and stainless, less often - black.

By strength, woven metal meshes are divided into light, medium or heavy, depending on the thickness of the wire used. The main wire diameters are from 0.32 mm to 0.8 mm, less often 1 and 1.2 mm.

Rabitz

They also produce galvanized, and with colored polymer coatings. They are used not only in the construction of fences, partitions or screens. To strengthen adobe and clay walls for plastering, an elastic Rabitsa with a high relief is indispensable. The cells hold large volumes of plaster, creating a monolith of reinforcing and finishing layers, and the Chain-link itself is easily attached to the wall surface.

Welded metal mesh for plaster

Produced in black, galvanized and with polymer coatings. They are used not only for masonry, concrete screeds and foundations, but also for strengthening structures with a thick layer of thermal insulation and for finishing surfaces under load.

It can be used both for walls made of stone, brick and concrete, as well as for wooden surfaces, with a thick layer of plaster, uneven walls and for loaded surfaces. Welded meshes have a huge range of applications, cells from 5 * 5 to 100 * 100 mm, other sizes are possible, the wire thickness is usually up to 3 mm. Release - depends on the thickness of the steel, coils or sheets.

Mesh with galvanization and heat treatment

For plaster, a special type of plaster mesh is also produced - with galvanization and heat treatment. Nets are designed to distribute and hold solutions on vertical surfaces without loss. Cells from 10 mm to 100 mm, many standard sizes of grids with rectangular cells. Issue - rolls and sheets, depending on the diameter of the wire.

Perforated - exhaust plaster meshes

They are produced both wicker and from solid metal sheets with a thickness of 0.5-1.0 mm by drawing and notching the sheet. They are widely used, including under plaster, along with welded meshes and chain-link mesh. They perform the tasks of holding and cohesion of the finishing layers, their hardening and significantly increase the resistance to cracking during shrinkage of buildings.

Everyone who has been decorating walls knows that when applying a thick layer of plaster, the material may not support its own weight and begin to flake off the wall surface. To prevent this from happening, a reinforcing mesh is used. It is fixed on the wall and takes on part of the load.

When is a mesh needed?

If the walls are plastered without a mesh, there is a chance that the material will peel off under the influence of its own weight. Thanks to the reinforcing mesh, a monolithic slab is created that can withstand any load. For plaster of various thicknesses, different grids are created, designed for a certain load.

The use of the grid makes it possible to form a durable layer of the solution, on which even with prolonged use of the room cracks will not appear. This result cannot be achieved without the use of the described products.

It is worth noting that even with improper mixing or non-compliance with the temperature level, the mesh helps to maintain the integrity of the plaster. There are special grids for the facade that are not subject to corrosion.

Grid types

In the building materials market, you can find many varieties of grids on which plaster is applied. In order not to make a mistake during the choice, it is worth considering the main types of such products and their features:

To choose from the proposed options, it is enough to determine in what conditions the grid will be used. If you need to plaster the facade, it is better to buy metal or fiberglass products with large cells. When applying compositions to internal walls, you can use a plastic mesh.

How the plaster mesh is attached

To understand how to properly fix the grid on the wall, it is worth considering the two most popular types of grids - fiberglass and metal. It is much easier to fix the first named type of product, since for this you only need to screw in a few self-tapping screws at an equal distance from each other. Such fasteners are enough to securely hold the mesh.

To keep the mesh more secure, it is worth rolling it out across the entire width in one piece, without dividing the product into several. At a distance of about two meters from each other during installation, vertical beacons are installed. After the mesh is hung on self-tapping screws, the cast plaster seals it to the wall, so no additional fasteners are needed.

The process of installing a metal mesh is somewhat different. This is due to the fact that under its own weight such a product is not able to be securely held on the mounts. Also, the cells of metal meshes are large and require additional fastening with mounting tape.

To fix it, you only need to cut off a part of the mounting tape so that it can completely cover one cell. After cutting the mounting tape, it is fixed on the wall with self-tapping screws. Calculate the distance between the fasteners in such a way that the mesh does not sag in any section of the wall.

Surface preparation

Before you start plastering the walls, you need to clean the surface of dirt and old finishing materials. After finishing work, there should not be any additional materials on the surface, as they can cause peeling of the plaster.

After cleaning the surface of the walls, it is necessary to apply a primer. Such compounds increase the strength of the wall and improve the quality of adhesion. They also prevent mold and corrosion. The primer contributes to the rapid drying of the surface and promotes better absorption of the compositions that are applied after it.

Applying plaster

After preparing the surface and fixing the reinforcing mesh on it, the plaster is applied in several layers. To properly apply the composition to the surface, you should consider the features of creating different layers:

First layer. The plaster is usually applied in two or three layers, depending on the wall material. On concrete, for example, three coats must be applied. The first of these is called "splatter". The plaster at this stage has a creamy consistency and is thrown onto the surface of the wall in random order. The composition may be smeared, but throwing allows you to speed up the process. After applying the plaster to a certain section of the wall, you need to rinse the tool. After throwing, the composition is leveled with a two-handed spatula from the bottom up.

Second layer. After the first layer is completely dry, you need to knead the plaster, the consistency of which should resemble dough. Then you need to throw the composition on the wall and, taking a trowel, smear it in a horizontal and vertical direction. It is after applying the second layer that the reinforcing mesh is completely covered with plaster. If it still protrudes to the surface, you need to apply the plaster again.

Third layer. At this stage, it is necessary to align the composition more carefully so that no errors remain on the surface of the walls. Before applying the final layer, the surface of the plaster must be moistened.

This mesh plastering technology is universal and can be used when working with walls made of various materials.

The final stage of work

After the plaster is completely dry, it must be prepared to fix the finishing materials. For painting and wallpapering, it is enough to sand the surface with sandpaper. If there are noticeable bumps on the wall, you need to start using the largest brand of paper. For convenience, the piece of the product is clamped on a grater. Grinding is done in circular motions with little effort, so as not to make new defects on the surface.

When the wall becomes homogeneous, you need to change the brand and continue grouting. If the surface will be painted, you need to take P120 paper. During the whole process, it is worth using goggles and a respirator to protect yourself from dust.

Since it is quite difficult to grind the surface in the corners, it is worth working either without a grater or using bars with sharp corners. If you want to facilitate and speed up the process of work, you can purchase an electric grater. But for processing the walls of one apartment, buying such a product is unprofitable. After grinding, you need to sweep away the dust with a brush.

Applying plaster for wallpaper and painting

Before starting work, you should determine exactly how the room will look like and what will be used as finishing materials. If wallpapers are selected, their type and thickness must be determined in advance. If they are thin, you need to apply several layers of leveling plaster. This will allow you to glue the wallpaper without bumps and bubbles.

For the room in which the wallpaper will be pasted, it is better to purchase ready-made dry mixes, since using them you can prepare better plaster.

If the plastering of the wall surface occurs before painting, the wall should be carefully prepared without leaving even small irregularities on it. The whole process is carried out in several stages:

first, a leveling layer is thinly applied;
then, if necessary, two more layers are applied to eliminate defects;

The surface of the enclosing structures, even with their impeccable construction, needs to be leveled, the classic of which is plastering. The plaster coating is often reinforced - with a mesh of various materials of a certain mesh size. This additional step complicates and increases the cost of the process, but under certain circumstances it cannot be dispensed with.

Consider the role of reinforcement in the plaster coating, and which reinforcing mesh to give preference to in a particular case.

Functions of reinforcement in plaster

Reinforcement of the plaster layer is an effective, time-tested operation to improve the performance of the leveling coating.

Reinforcement in plaster performs the following functions:

It makes it possible to form a plaster coating, the thickness of which exceeds the maximum allowable value for the mixture used. The need for this arises when, after marking on the plastered wall of the lighthouse plane, it turns out that the required thickness of the leveling layer does not fit into the characteristics of the mixture used.
Ensures the integrity of the plaster layer, preventing cracking or neutralizing its consequences. The specific gravity of the plaster is significant, so cracks in the coating are dangerous, especially if they form in high-lying areas that do not have support under the leveling layer (above window and door openings) - the collapse of the finish is fraught with injury. The reinforcing mesh, even when the finish is peeled off, will prevent its collapse.
Increases the bearing capacity of the plaster. Delamination of the plaster coating in case of loss of adhesion to the base can cause the collapse of the finish on the solid surface of the wall. This can be provoked by the load from interior elements mounted on thick-layer plaster (shelves, cornices) that are not connected with the supporting base. Reinforcement gives the plaster layer additional bearing capacity.

Plaster from any mixture with a thickness of more than 3 cm must be reinforced to avoid delamination.

The functionality of plaster contains the answer to the question of when it is reinforced:

When performing a thick-layer coating - locally or over the entire area;
If the house is located near objects that have a vibrational effect on it;
In the presence of a factor of periodic uneven shrinkage of the building (re-planning in the apartments of frame houses);
To provide the coating with additional bearing capacity, including for the installation of interior items and household equipment.

Types of reinforcing mesh

In the middle of the last century, the reinforcement of plaster was carried out by laying it on shingles, which compensated for the lack of adhesion to the base and reduced the likelihood of coating collapse. But the installation of shingles is a time-consuming operation, and the mounted reinforcing grating, with its modest physical characteristics, was also vulnerable to moisture and microorganisms.

Today, plaster is reinforced with special meshes, which differ in the material of manufacture, production method and mesh size, on which the scope of their application depends.

The main classification of reinforcing meshes - according to the material of manufacture:

metal;
polymeric;
fiberglass.

Consider these materials in terms of suitability for reinforced plastering of various wall surfaces.

metal mesh

Of all the meshes used in construction, the most durable are metal meshes, which, according to the manufacturing method, are of the following types:

Woven - from low-carbon, galvanized or stainless steel, brass;
Chain-link mesh - ordinary, galvanized or polymer-coated steel;
All-metal expanded metal mesh (TSPVS, "cut") - made of ordinary or galvanized steel;
Welded - plain or painted steel.

Grids also differ in wire thickness and mesh size.

The plaster of stone walls is reinforced with metal meshes with significant level differences - more than 4 cm. Of the listed types, the first three are suitable for an apartment - with a wire thickness of up to 1.5 mm and a rectangular mesh with a side of 4-30 mm, but not all of them are equally effective.

The best characteristics are "cut" - made of a single sheet of metal and coated with zinc, therefore it is strong, durable and significantly increases the strength of the plaster layer with a minimum of waste during installation. But the listed advantages are also taken into account in its price - the material is more expensive than the two previous types of mesh in the list, and they also do a good job.

Welded meshes are made of steel bars and are used to significantly increase the strength characteristics of wall structures - in housing conditions, the need to use them rarely arises.

With a significant thickness of the plaster layer, the fastening of the metal mesh to the supporting base must be strong (like the base itself - concrete, brick, blocks), therefore, it is performed with self-tapping screws or dowels with home-made washers of large diameter, forming a gap between the reinforcement and the wall of at least 5 mm. Reinforcement of thick-layer plaster can be carried out in several layers - as the coating builds up.

But woven meshes made of galvanized wire or brass can also be used to reinforce thin-layer plaster - over insulation made of polystyrene foam or foam plastic, only it will cost more than using non-metallic reinforcement.

If large level differences on the wall are local, then there is no need to reinforce the base over the entire area, especially if a ready-made cement mixture is used for leveling. Where the thickness of the plaster is less than 2 cm, you can do without reinforcement - cut the mesh and nail it to the wall along the perimeter of the cut.

Polymer reinforcing meshes

The raw materials for the manufacture of these meshes are polyethylene, polyurethane, but most often polypropylene granules, which, after melting and mixing with optimizer additives, are extruded (punched) through a cellular shape of a certain profile. Plastic nets are produced with cells in the form of a square, rhombus or hexagon. The process of their manufacture is low-cost, so polymer mesh fabrics are widely affordable.

The technique of extrusion of polypropylene under high or, conversely, low pressure with the addition of additives makes it possible to obtain a material of sufficient strength, uniform structure and fixed thickness. However, polypropylene meshes are inferior in strength to metal ones. Mesh sheets made of this polymer are most effectively used to prevent plaster cracking - they should not be reinforced with a plaster layer more than 2 cm thick. In addition, the alkaline components of cement-sand mixtures destroy polypropylene over time, so most meshes made from this polymer are more often used to reinforce gypsum coatings - but also not thicker than 2 cm. Polypropylene meshes are especially convenient for laying on foam, but it should be remembered that they are fastened not on the insulation, but on the freshly applied layer of the mixture, sinking into it with a roller, after which the re-coating is performed.

Despite these disadvantages of polypropylene, the company "Astroplastica" (St. Petersburg) presents on the Russian market reinforcing meshes made of this material from the Italian concern "Tenax", which are declared to be chemically resistant:

"Plurima" - a cellular fabric made of threads strengthened according to the technology of orientation, with knots at the corners of the cells (5x5, 5x6 or 6x6 mm), used to reinforce thin-layer plaster and putty (5-1 mm);
"Armaflex" - a high-strength flat mesh fabric with a cell of 12x15 mm for reinforcing plasters 1-5 cm thick;
"Sintoflex" - 3 modifications marked E, M and D, high-strength mesh with cells 12x14, 17x24 and 22x35 mm.

The manufacturer managed to achieve the chemical resistance of polypropylene using special polymer additives.

Polyurethane meshes are produced in several modifications. Almost any leveling coating can be reinforced with them, therefore polyurethane meshes are also called universal.

Fine-mesh material (5x5, 6x6 mm) is intended for reinforcing external and internal plaster coatings from ready-made mixtures based on cement or gypsum with a thickness of 5 to 15 mm. Plastering with a home-made DSP solution on such a grid is not performed.

Grids with a cell of 13x15 mm (medium mesh) are designed for reinforcing facade and interior plasters up to 3 cm thick, made from ready-made or home-made compositions based on any binder (cement, lime, gypsum).

Coarse-mesh polyurethane meshes (22x35 mm) are designed for reinforcing plaster coatings of medium and large thickness, including large areas. Suitable for traditional do-it-yourself mortars and ready-made leveling compounds.

To reinforce the internal plaster, the polymer mesh with a cell size of 5x5 mm must have a density of at least 110 g/m2.

Fiberglass mesh for plaster reinforcement

Fiberglass filaments are produced by passing molten glass through micro-perforations. According to the place of application, meshes made of such fibers are divided into facade and interior ones. Both types have a mesh size of 5x5 mm, but the threads of nets for outdoor work have a higher density (160 g/m2), which leads to their high tensile strength, and are impregnated with a special compound that increases frost resistance.

With wide affordability, high flexibility and equal specific gravity, fiberglass meshes have the following advantages over polymer canvases:

Absolute chemical inertness;
Higher tensile strength;
Virtually unlimited operating temperature range (melting point 1500°C).

When choosing a fiberglass mesh for plaster, you should be guided by its specific gravity. The facade is reinforced with a material with a density of 90 g / m2, internal surfaces - from 60 g / m2.

On sale there is a fiberglass mesh with a cell of 10x10 mm with a density of 450 g / m2, used to reinforce thick-layer plaster coatings over large areas, but in an apartment, the outstanding characteristics of such a material will remain unclaimed.

Conclusion

Choosing a mesh for reinforcing plaster is not difficult. You only need to know the place of application, the maximum thickness of the future plaster coating and the leveling material.

As for the prices for reinforcing material, in Moscow and the Moscow region they are approximately as follows:

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Reinforcing mesh for plastering walls is a modern version of strengthening the plaster layer. Its use allows you to form a very strong durable layer of material. Then cracks will not form, the surface will look perfectly smooth and of high quality.

Today the market offers a choice of two options - a grid for plaster
metal and polyurethane mesh. Each has its own characteristics and its own scope. And, in turn, it is divided into several types:

masonry mesh(painting), made of plastic (polymer), with cells five by five millimeters; it is used when finishing brick walls inside and outside buildings; it is suitable for plastering with gypsum mortar, where there is no cement; the colloquial name for such material is paint mesh.

Universal small- it is made of polyurethane; the side of its cell is six by six millimeters; such a woven mesh for plastering 20 mm is used in combination with mixtures for finishing, plastering; This material is suitable for interior decoration.

Universal mesh medium- its cells are rectangular, 14 by 15 millimeters; it is commonly used in building interiors.

Universal large with cells, the side of which is 22 and 35 millimeters; it is convenient to use it when decorating spacious premises, for example, warehouses or production workshops; it is a suitable mesh for facade wall plastering; it tolerates loads, temperature changes well.

fiberglass mesh, which is made of fiberglass, pre-treated with a special method; the size of its cells is five by five millimeters; such a material is well tolerated by the action of low and high temperatures, the effects of precipitation, and is also not affected by chemicals, which makes it the best option when using cement mixtures; has very high strength characteristics, can "work" anywhere; This is a good mesh facade for plaster.

Plurima, which is a biaxially oriented structure; its material is polypropylene; cell sides - five by six millimeters; does not react to the action of chemical compounds; very light; it is applied in work in and outside of rooms.

Armaflex made of polypropylene, which has reinforced connections with cells 12 by 15 millimeters; its advantage is ultra-high strength, which allows the use of such a product when creating a thick layer of mortar; it is a suitable material for forming a reinforcing layer of facade plaster.

Mesh synthoflex, polypropylene, with cells of two types: 12 by 14 and 22 by 35 millimeters; it is distinguished by lightness, inert properties with respect to the chemical effects of various substances; used both inside and outside buildings for various purposes; It is an ideal mesh for exterior wall plastering.

Steel mesh- these are rods connected by soldering at the intersections; many cell options; suitable for high loads, when it is necessary to form a layer of large thickness.

galvanized mesh, which is made of galvanized metal rods; cell sizes vary; very durable and is used for facades and interiors; one of the most popular types of reinforcing mesh on the Russian market.

Mesh attachment.

On a wall or ceiling, a reinforcing mesh for wall plastering is attached in different ways, the choice of which depends on the type of mesh, on the composition of the plaster:

the solution itself can act as a fastener:
self-tapping screws or screws can be used.

The specific choice is also determined by the method of applying the mixture. So, if the covering method is used, the mesh for wall plastering can be attached to the first plaster layer.

When applying a spray, it is convenient to first attach it to the wall, and then fill it with a plaster mixture. At the same time, it is worth carefully monitoring that the solution adheres well to the surface being trimmed.

It is believed that the best way is when the reinforced plaster mesh is pre-attached to a dry wall using screws, self-tapping screws and other devices. And then the mixture is already applied - in a uniform layer over the entire surface to be trimmed.

When is mesh used for plaster walls?

Experts advise paying attention to several decisive points when deciding whether or not to use a reinforcing mesh.

First, understand how thick it is supposed to make a layer of mortar on a specific wall or ceiling surface. This is important, since this factor determines how thick the building mesh will be. To do this, make such measurements: find the most protruding point on the wall or ceiling. Apply one of the levels - laser or building. Then they look for the "lowest" place. Determine the thickness of the plaster layer to be applied.
When the solution layer is not more than twenty millimeters, and there are no rusts or significant protrusions on the ceiling or wall, reinforcement can be omitted - the mixture can hold on its own.
With a layer thickness of twenty to thirty millimeters, reinforcement will be needed. Without it, the coating may peel off over time, cracks may appear. Suitable polymer mesh or fiberglass. It will not allow cracks to form on the finished surface of the dried mixture.
A layer of more than thirty millimeters requires the use of metal material. This will help to avoid peeling of the plaster under its own weight.
If measurements have shown that in order to level the surface, it is necessary to apply a solution with a layer of fifty millimeters or more, it is better to choose a different material: instead of plaster, use, for example, drywall or stretch ceilings, or other materials. They will hide significant depressions, protrusions.
Do I need a mesh when plastering aerated concrete? In order for the mixture to be well fixed on the foam blocks, it is better to use it.

Installation work.

The installation process is divided into several steps.

First of all, the surface to be plastered is degreased and coated with a special primer. This is necessary to ensure good adhesion of the solution to the wall or ceiling.

Then the chain-link mesh for wall plastering is cut into canvases, so that it is more convenient to work with it. It is worth considering that along the joints of walls or rustication on the ceiling, reinforcement should be placed in the form of solid canvases. At the same time, it is good when the edge finds itself on an adjacent wall or a wall bend of ten to fifteen millimeters. This strengthens the corners. It is very important to make a right angle with plaster.

For each type of building grid for plaster, its own technology is used. For example, fiberglass material is attached to the first layer. It is pressed a little, then the next layer is applied. The fiberglass mesh for plaster is inside the plaster layer.

To keep the facade fiberglass mesh under plaster firmly, some experts prefer to use different fasteners - screws and self-tapping screws. First, the surface is marked out at the rate of sixteen holes per square meter.

Then holes are drilled at the selected points, where dowels or screws are placed. So that their hats protrude slightly above the wall or ceiling. Spread the first layer of plaster mixture. They put nets on the hats. Cover with plaster.

An important point is that it is better to apply the mixture throughout the space, but it is worth distributing it, starting from the middle - in different directions. At the same time, at the corners, the edges of the canvas are pressed with a wide spatula. And the second spatula is used for smoothing.

When plastering the ceiling, it is proposed to first make holes, then insert fasteners into them. After that, glue the plaster fittings to the ceiling with mounting tape. This option is suitable if lightweight material is used. Then metal plaster beacons are placed. The mixture is applied. It is important to ensure that it fills the cells, fixed on the surface of the ceiling.

Metal mesh.

Metal mesh for wall plastering, as already mentioned, is used when you need to make a mortar layer of thirty millimeters or more. It is better to choose galvanized material with cells of ten by ten or twelve by twelve millimeters.

Expanded mesh with a mesh size of 10 by 25 millimeters is also suitable.
Before starting to work with metal reinforcement, experts recommend degreasing it.

After that, the material is cut with scissors into separate sheets, taking into account how it is planned to place them on the surface of the wall or ceiling.

Then, using a perforator, holes are made for fasteners. The distance between them is proposed to choose from 25 to 30 centimeters. Thus, there should be about sixteen holes per "square".

The next step is to fix the metal mesh for reinforcing the plaster on screws or dowels, or self-tapping screws (in the case of finishing a plasterboard surface). Additionally, the material is fixed with a mounting tape. Individual pieces should overlap each other by about ten millimeters. If necessary, drill additional holes for fasteners - the reinforcement should not move away from the ceiling.

Then they put construction beacons. Apply the first layer of mortar using a trowel. It is important to properly push the solution through the cells. Then spread it evenly over the entire surface. Wait for the layer to dry before moving on to the next one.

We choose metal.

Professionals recommend choosing a mesh for metal plastering in cases where the surface differences are more than four centimeters. A strong metal will help to hold a thick layer of mortar that will have to be applied in this situation.

Steel materials are the only option if the mixture contains cement containing alkali. The fact is that metal is less susceptible to alkali than plastic.

A solution with clay also requires the use of metal reinforcement. Suitable material with cells of 50 to 50 millimeters.

The mesh for plastering the walls of the facade can be used for different purposes. For the screed, a material with a larger cell is produced, from a thicker wire. For plastering, the thickness of the wire can reach one and a half millimeters, and the cells usually have a size of 30 by 30 millimeters.

Another point: rolled material is used for facade work. Indoors, sectional is usually used.

A question of price.

The cost of reinforcing mesh in Russia today is offered from thirty rubles per square meter. Specific price per sq. m depends on the type, material, manufacturer. You can buy it in many stores of finishing materials.

Work on the installation of plastic mesh for wall plastering and other types, which can be ordered from specialized companies, is included in the calculation of all work on plastering walls or ceilings. Such services cost from four hundred rubles per m².

With my own hands.

You can install the reinforcement by inviting specialists, but you can do it on your own. The main thing is to follow the instructions exactly and remember the important nuances.
When properly installed, the grid for plastering the ceiling and walls can prevent various problems in the future:

plaster will adhere to the surface firmly;
there will be no swelling on the surface of the plaster layer;
plaster will not peel off the wall or ceiling;
the service life of the plaster will increase;
the quality of decorative finishes will improve;

Shingles for plaster.

This method of leveling the surface has long sunk into the past. Today there are a huge number of alternatives, each of which is described above.
Shingles for plaster were applied in the old days and, in essence, performed the same functions as a modern grid. In old houses and buildings, these structures can still be found as part of plastered walls.

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 passed the shrinkage stage, but in a number of works it is indispensable. Cell sizes, diameter and base are different, in each case it is important to choose the right option.

Types and description
Scope of use
Mounting technology
average cost

Why is a grid needed?

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

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

Types of grids, features and applications

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

Depending on the rolled products used, they are all divided into types of stainless steel and galvanized and non-galvanized wire. When using them as a grid for plaster, it is worth choosing a protected type, with a zinc coating, it better withstands the alkaline effect of cement and is less susceptible to corrosion.

Fiberglass fabric is obtained from threads of molten glass, to increase strength, flexibility and resistance to moisture, alkaline and biological effects, it is impregnated with special compounds. It is the thinnest, it is advised to choose it when finishing, applying a rough or finishing layer within 2-3 cm, arranging warm and self-leveling floors. The characteristic properties also include high thermal stability (up to 1500 ° C), this plaster mesh tolerates temperature extremes well. The intended purpose of fiberglass is determined by the size of the cells (for interior work, it is advised to buy a canvas 2 × 2 m, for facades and exterior - 5 × 5).

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

What grid to use and in what cases?

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

It is better not to save on external surfaces; these areas require varieties coated with zinc or impregnated with alkali-resistant compounds. To exclude doubts, the material is checked by immersion in a soapy solution for several days, quality products do not spread and do not change color. When buying facade meshes, attention is paid to the value of the breaking load. On flat areas, a canvas with 1800 N and above is used, on curved areas - within 1300-1500.

When finishing the interior, the same rules apply - a thick-layer coating requires reinforcement with metal, a thin-layer one - with fiberglass or polypropylene. The latter type is also used as a masonry one: an elastic web with 5 × 5 cells is placed between bricks or blocks and increases the adhesion of rows and products. The recommended density range for synthetic meshes for internal plaster is 110-160 g/m2, which is enough to ensure crack resistance and keep the layer within 2-3 cm. adjoining the ceiling, reinforcing mastic roofs, serpyanka is well suited - a thin fiberglass with a cell size of 2 × 2 mm and a density in the range of 45-60 g / m2.

Do-it-yourself grid mounting nuances

The metal variety weighs the most and needs to be securely fixed with screws or nails. It is degreased (galvanized is simply washed with water or wiped with a rag) and cut with special scissors into pieces of the desired 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 m2 takes 16 fasteners. The edges, if possible, are fixed with a mounting tape (when working with coarse-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 closed with a mixture, it is important to choose the correct cross section and method of connecting the wire, it is impossible to reduce the coating thickness below the recommended value.

When working with fiberglass and polypropylene meshes for plaster, the mortar itself or self-tapping screws and screws can act as fixing materials. In the first case, the canvas is placed in the middle of two layers; to increase the density, it is better to unwind it directly on the spot, and not cut it into separate pieces (the exception is the foam plastic finish, where segments are better suited). Plastered in the direction from the middle to the edges.

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

But a more reliable and correct option is to fix the dowels on 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 mounting beacons. The first layer of the solution is placed along the width of the product, after laying it, they proceed to the next one, tracking the approach to each other by 10-15 cm. 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 meshes, otherwise they depart along with the finishing composition. The 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

Name, basis	Special properties, brief description	Cell size, mm	Roll size, m	Price for 1 m2, rubles	Price per roll, rubles
Stucco Woven Galvanized Wire Mesh	Wire diameter - 0.25 mm	0.63×0.63	1×30	468	14040
	Wire diameter - 0.25 mm	1×1		208	6240
	The same - 0.4	2×2		162,50	4880
	The same - 0.4	4×4		143	4290
	The same - 0.6	10x10	1×60	65	3900
	The same - 0.6	15×15	1×80	62	4990
The chain-link is not galvanized	Wire diameter - 1.2 mm	6×6	1×10	240	2400
Welded galvanized	Wire diameter - 1 mm	10x10	1×25	240	6000
fiberglass mesh	Serpyanka with a density of 45 g/m2, white	2×2	1×50	18	900
	Plaster impregnated with alkali-resistant polymer composition, 60 g/m2, white	5×5		21	1050
	For facade, 160 g/m2, blue	5×5		31	1550
Plastic mesh Wagon S	Colors: khaki, black. Used for finishing and rough layers up to 1 cm thick	6×6	2×100	14	2800
Synthflex E	High-strength, flexible, biaxially oriented polypropylene, for reinforcing layers up to 5 cm	12×14	2×100	65	13000
C1-3, polypropylene	Grey, for reinforcing plaster (up to 2 cm) and masonry	13×13	1×30	21	630

Different types of mesh

Repairs are often accompanied by leveling the walls with plaster. In addition, it also improves thermal insulation, reduces the level of extraneous noise in the finished room. Surfaces plastered with decorative mixtures have a beautiful appearance. When the irregularities are small and there are practically no defects, then the solution is often applied simply to the prepared base. If the deviations are large, there are cracks, then a plaster mesh is necessarily used in the work to reinforce the walls. It is represented by a wide range, which allows you to choose products for certain operating conditions.

Scope of use

Reinforcing mesh for wall plastering has replaced the old methods (shingles, stuffed nails) used to improve the adhesion of the finishing layer to the base surface. It is made from materials with different properties. There are products from a large number of different manufacturers on the market.

Strengthening the base

The plaster grid is used both for internal, and external works. It is the basis of the leveling coating. The latter becomes stronger and more durable as a result. The mesh must be used to avoid the appearance of delamination, cracking, or to stop the process of crack growth itself.

The construction mesh for plaster is used to qualitatively prepare the base for further activities to decorate work surfaces. With proper installation and further plastering, it prolongs the life of the finish and helps maintain the integrity of the partitions.

Types of plaster mesh

Reinforced mesh for plaster differs in the materials used for its production, the structure and size of the cells, and the methods of creation. According to the first criterion, the following varieties are distinguished:

plastic;
fiberglass;
metal.

Products have all the advantages and disadvantages of the materials used for their production.

A more detailed classification is presented in the table below.

masonry (painting)	5*5	plastic sheet used when working outside and inside buildings using gypsum mixtures
universal: small, medium, large	66, 1415, 22*35	the fine-mesh version is a suitable mesh for plastering internal walls, while the coarse-mesh version withstands temperature extremes and loads from the outside well
fiberglass mesh	5*5	durable, resistant to moisture, cold and heat, chemical compounds material
plurima	5*6	made from polypropylene, chemically inert, used for external and internal work

The existing assortment allows you to choose high-quality products, taking into account all requirements. The use of material that meets the existing conditions determines the durability of the finish.

Choice of working material

The main determining factor in the selection of material is its suitability for specific conditions, so the mesh for wall plastering is selected taking into account the following number of factors:

the required thickness of the created finishing coating;
the type of plaster mixture that is used;
type of base (concrete, wood, brick, porous materials, stone);
external conditions in which the formed plaster layer will be located: outside the building, inside, or in unheated, damp rooms.

Plaster with the following types of mixtures:

cement-lime;
plaster;
cement-sand;
clay and others.

Various additives are often added to such compositions. Together with the main components, they have a certain level of chemical activity. This determines the degree of their influence on different materials from which the meshes for reinforcement are made.

Reinforced brick surface

Taking into account the above provisions, the main recommendations for choosing a mesh for plastering walls are as follows:

fiberglass products are recommended to be used when the thickness of the created plaster layer is up to 3 cm, when there are also recesses, cracks in order to stop the expansion of old ones and the formation of new ones;
if the height of the formed coating exceeds 3 cm, then a more appropriate option would be to install a metal mesh: it is able to withstand the weight of the finish and not peel off at the same time;
plastic products are best used for thin gypsum mortars, and, for example, cement-sand compositions corrode such reinforcing material over time;
when using mixtures based on clay, also when there are significant irregularities on the surface of the base, metal options are relevant;
plastic sheets with small cell sizes (for example, 0.2-0.3 cm) are used during finishing puttying;
fiberglass or galvanized (ordinary metal ones are not suitable), products are a good way to reinforce rooms with high humidity;
when there is a need to plaster the oven with a cement-clay mortar, then you can use a chain-link, and with a thin layer of it - fiberglass;
steel products are suitable for joint use with compounds containing cement;
during the plastering work on the exterior walls of the house, material with cells of 3 * 3 cm is usually used, and their larger sizes are selected to tighten the surface;
for internal work, they mainly use material in rolls, and for external work, in the form of sections.

When the height of the created layer of plaster does not exceed 2 cm, then reinforcement can be omitted. Following the above recommendations will allow you to choose the most practical material.

Features of mounting different types of mesh

Metal mesh for plaster, fiberglass or plastic, can be mounted using different methods. The choice of fixing option is determined by the composition of the working mixture, the material from which the mesh is made, and the plastering technique used. Fix with:

plaster mortar;
self-tapping screws or dowel-nails, screws.

The first layer of plaster for leveling the walls is reinforced by pressing the mesh into the mortar of the required thickness applied to the surface.

The best way to create a finishing coating (covering or decor) is to fix the adhesive web on a dry base with special fasteners.

When the area of the area to be trimmed is small, then you can use the working mixture for fixing, applying it pointwise.

It is enough to simply fix the paint grid with a thin layer of mortar.

The fiberglass cloth is mounted according to the following optimal algorithm:

perform markup for the installation of beacons;
holes are drilled along it, into which dowels are then inserted;
set the screw heads according to the level;
apply the solution to an area equal to the width of the canvas used;
a grid is immediately applied to the plaster, threading the caps from the screws through it;
throw the mixture further;
overlap (10 cm) fix the next strip;
so continue until the entire room is reinforced;
install beacons.

The solution should be smoothed over the canvas evenly, starting from the middle of the strip, while moving towards its edges. When creating a thin layer, fixing the fiberglass to the staples with further application of putty justifies itself.

Installation of a metal mesh

The stucco metal mesh is fixed in the following sequence:

cleaned of the lubricant composition by rinsing with water or wiping with a damp cloth;
with scissors for metal, cut the canvas into pieces of the desired size;
every 25-30 cm holes are drilled with a diameter of 6 mm for dowels (about 3 mm deeper than the length of the plastic part of the fastener), insert them;
using screws and mounting tape - fix the material on the surface;
the following fragments are laid with an overlap of 10 cm;
install beacons.

The minimum height of the created coating depends on the thickness of the mesh wire. Metal products additionally strengthen the base, and fiberglass - reinforces the plaster with a mesh.

Methods for fixing the plaster mesh are discussed in detail in the video below.

Installation of facade fiberglass material is shown in the video below.

Strengthening the base, increasing the strength and reliability of the plaster finish - all this is ensured by the creation of an adhesive layer. It is formed using different materials.

For the correct implementation of the reinforcement of the walls with a mesh, it is necessary to take into account the type of mortar used, the place of installation (outside or inside the building), the expected height of the coating. It is also required to use suitable mounting technology. Compliance with the above conditions allows you to plaster walls or ceilings with high quality, minimize the possibility of cracking, and not be afraid of shrinkage at home.

In the course of plastering wall surfaces in any room, specialists use a reinforcing mesh under plaster to prevent peeling of the plaster layer and the appearance of cracks. A special mesh helps to strengthen the main finishing material.

Varieties

There are several types of mesh for plaster; they differ in operating parameters and features of use. To date, a number of manufacturers offer a wide range of mesh products.

There are the following varieties:

Rates

How much does a plaster mesh cost? The cost of the mesh intended for plastering wall surfaces is different. The price is formed based on the type of product and the material from which it is made, operational parameters.

Approximate price:

fiberglass woven (1x55 m) - from 750 to 8000 rubles, depending on the density;
based on polypropylene (1x30 m) - from 700 to 1200 rubles;
from steel (1x10 m) - from 50 to 95 rubles;
with a galvanized coating - from 350 to 580 rubles.

Subtleties of choice

The need to use reinforcing mesh devices arises when plastering bases made of concrete, wood and brick.

Attention! If the mesh is not used, the likelihood of peeling of the facing material increases.

The choice of the type of building reinforcing mesh depends on the type of work to be performed, the thickness of the finishing layer and the conditions of use.

What mesh is needed for wall plastering and which is better? There are several rules that help you decide: what kind of mesh and in what situations is more suitable, and in what cases you can do without the use of a reinforcing product.

For lining the ceiling surface, monolithic reinforced concrete load-bearing structures and a plaster density of less than 10 mm, it is not necessary to use mesh stuffing.

It is desirable to install a fiberglass mesh with a finishing density of less than 30 mm.

Metal should be used with a density of more than 30 mm.

With a galvanized coating - it is considered the best option for facade work and for interior cladding in high humidity conditions.

Reinforcement with a plastic type of mesh is preferably used with a finishing layer with a maximum thickness of 20 mm, as well as in the event of a subsidence of the base. Excellent for gypsum surfaces.

To eliminate shallow cracks and mask joints, you can use adhesive tape: it will give strength to weakened areas of the base.

To reinforce slopes with a large plaster layer, a steel mesh is used, with a small layer - a fiberglass product. With a slope width exceeding 15 cm, and with a plaster layer of less than 6 mm, reinforcement is still used.

Plastering of wall surfaces on a grid

The plaster mortar allows you to level the wall surfaces, but if there are a large number of cracks or other defects on the walls, only plastering is not enough to smooth the base. In such a situation, it is recommended to use wall reinforcement with a special mounting mesh.

Reinforced surfaces become stronger, their ability to withstand mechanical pressure increases.

The technology of plastering wall surfaces includes several stages:

Foundation preparation. First of all, the old finishing material is removed from the surface, crumbling places are leveled. After removing the worn layer, the base is cleaned of dust and dirt, if there is mold, it is scraped off with a steel brush. After that, the cleaned surface is covered with a primer in order to improve the adhesion of the base to the plaster material and protect the wall from harmful microorganisms.
Reinforcing mesh installation. First of all, you need to measure the height of the wall, and then cut the canvas to the required size. Cut the mesh with scissors designed for cutting metal. The cuts are attached to the wall surface by laying them on top of each other by about 10 cm. How to fix the grid for plaster? It is fastened with self-tapping screws, fixed with washers or galvanized tape.
Installation of plaster beacons. To level the surface, it is preferable to use a profile for plaster. First, the location of the extreme beacon is indicated (vertically), they should be fixed with two screws. After that, the extreme beacon is mounted on the reverse side. To evenly space all the guides, pull the thread between the extreme beacons. Then install intermediate beacons at a distance less than the length of the rule.

On a note! Use a level to check the position of the beacon.

Plastering. Before you start applying the material, prepare a solution with a consistency close to sour cream. The primary layer is applied by spraying with a trowel so that the solution seeps through the mesh and adheres to the wall. It is important that the solution does not flow down the wall. The spray density is about 10 mm. After drying the primary layer, prepare a thicker substance and apply it to the wall surfaces with a trowel. Level the surface with a rule, pressing it against the beacons and turning it from the bottom up to remove excess mortar. After the plaster layer has dried, remove the beacons, and seal the recesses with mortar.

Corner Alignment. The joints of the ceiling surface and the walls are manually leveled with an angled spatula. The outer corners are leveled with perforated steel corners. This completes the work on plastering the walls.

We considered the option of installing a steel plaster mesh. Installation based on durable materials is somewhat different.

Fiberglass mesh installation method:

Preparation for the installation of fiberglass reinforcing material is no different from similar work for attaching steel mesh.

Attention! When applying the solution, make sure that it is evenly distributed over the surface of the grid, smooth it out - from the center of the canvas to the edges. Press the edges at the corners with a rule or an angled spatula.

The method of mounting a polymer mesh involves a number of steps.

At the first stage, the foundation is prepared. Preparatory work includes cleaning and priming the surface.
The next step is to measure the wall surfaces and cut the canvas in accordance with the measurements taken and add a margin of about 10 cm (for overlapping the joining of the canvases).
After that, the preparation of the adhesive-based composition is carried out.
The main stage is the application of the initial plaster layer with a density of 3-5 mm with the indentation of the paint grid into the solution.
After the initial layer dries, the surface is covered with a primer and the final layer of plaster is applied, leveling is carried out by the rule.
At the last stage, the dried wall surfaces are sanded.

A few useful quick tips allow you to do the job of plastering walls as efficiently as possible.

The denser the plaster layer applied to the base of brick or concrete, the stronger the steel mesh to be mounted must be.
It is undesirable to use a simple steel mesh in rooms with a high level of humidity, for example, in baths and bathrooms, as well as for external cladding. The thing is that steel types of material are prone to rust. It is preferable to install a mesh made of fiberglass or welded with a galvanized coating.
Before installing a metal reinforcing product, it must be degreased.
It is unacceptable to use a reinforcing mesh made of plastic for cement-based plaster, because over time the cement mixture will corrode the product.
Many people, when performing wall plastering work, first lay the mesh to the wall surface and only after that they plaster it - professionals do not advise doing this: as a result, cavities in the cells may form and the degree of adhesion will decrease.
When calculating the required number of dowels, keep in mind that per 1 sq. m. approximately 16-20 pieces are required.
When installing the reinforcing material, do not allow it to sag and peel off the surface by more than 10 mm.
For internal cladding, as well as for external cladding, the best option would be to use a reinforcing mesh with cells with a diameter of 5x5 mm and 10x10 mm.
The fiberglass mesh must be impregnated with a polyacrylic compound. If the mesh is not impregnated, it cannot be used with a plaster solution, otherwise it will gradually collapse under the action of alkalis.
If shingles were used to finish the wooden surfaces of the walls, it is preferable to choose a chain-link mesh.
With a layer density of about 50 mm, due to strong surface differences, it is undesirable to perform wall plastering. It is preferable to use wall panels for decoration - this finishing material will help hide existing defects.
In the case of plastering small areas, a plaster mix can be used as a fastener. It is applied pointwise, after which it is evenly distributed over the entire area.

The use of reinforcing plaster mesh in the process of performing internal work on plastering wall surfaces allows you to do it efficiently. The presence of the mesh prolongs the service life of the finishing material, the main thing is to choose the right type of reinforcing mesh, based on the conditions of its use.

Video

See the features of wall plastering with mesh on the video:

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