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Mesh for plastering the external walls of the house. Plaster façade mesh for exterior work. Universal fiberglass reinforcement mesh

During construction, reinforcement is an indispensable material. Reinforcement allows you to strengthen a structure and extend its service life. But why do you need to reinforce walls, and what materials are needed for the work? We'll figure out.

Very often, during the construction or renovation process, you can encounter many wall defects that are quite difficult to disguise or remove completely. You can level the wall using a ball of plaster. But if there are a lot of rough irregularities or cracks on the wall, then the plaster itself will not be able to hide them. In such cases, you can use mesh reinforcement of the walls.

The reinforced surface is more elastic and better absorbs mechanical loads. Reinforcement of walls with mesh is recommended if the thickness of the plaster is 2 centimeters or more.

What is reinforcement used for?

Reinforcement is used in the following cases:

1. Uneven walls. In the process of leveling the walls, you may encounter very large irregularities, to hide which you will have to apply a large layer of plaster. But the plaster itself is very heavy and if the layer is quite thick, it can swell and peel off.
2. Too much flat wall. In such cases, the mesh helps the mortar adhere more tightly to the wall.
3. Cracks. Using mesh reinforcement, you can significantly reduce the size of large cracks, and if the cracks are smaller, then completely hide them. The mesh also prevents the appearance of cracks and microcracks if used during the construction process.

How to choose the right mesh for wall reinforcement?

There are many nuances that are worth knowing when choosing a grid. Reinforcement mesh can be metal, plastic or fiberglass.

Metal mesh is suitable for reinforcing walls with large irregularities (more than 4 centimeters). Metal works well in an alkaline environment and such meshes can be used for plastering with a solution that includes cement. It is also recommended to use metal mesh if plastering will be done with clay. Only in this case it is better to take a mesh with a cell size of 50x50 millimeters. It is also good to reinforce walls that are often subject to mechanical load with metal mesh (garage walls, first floor of a building).

The use of plastic mesh is only possible if the plaster does not contain cement. Often used with gypsum mortar for finishing wall plaster. This mesh is cheaper than metal or fiberglass, but it is not durable either. When working with such a mesh, experience is required, as it quickly sags and deforms.

If the layer of plaster is thinner, then it is possible to use a fiberglass mesh. This mesh prevents cracks from opening relatively well, but they are small in size.

Mesh installation

In order to attach the mesh to the wall you will need:

• dowel-nails d=6mm and screws 4.5mm;
• perforator;
• wire for knitting mesh;
• metal cutting scissors:
• beacons.

The surface of the wall must be cleaned and treated with a primer. Cut the mesh into pieces so that the piece reaches the entire height of the wall. We start fastening from the bottom using dowel nails and move to the top.

To fix the mesh, you can bend the edge of the nail or use galvanized mounting tape. The mesh is also often fixed using a knitting wire. To do this, you need to drive the dowels incompletely and tie the wire onto the caps in a Z shape. After fastening the wire, the dowels are finished.

When calculating required quantity dowels, you need to know that about 16-20 pieces will be spent on 1 m².

In order for the mesh not to sag or deform, it must be stretched well and pressed tightly to the wall surface. If there are places where the mesh lags behind the wall by 1 centimeter or more, then the plaster may peel off from the surface. The joints must be overlapped. After fixing the grid, beacons are placed.

Next, you can proceed to the first layer of plaster. It must be done with liquid solution. The plaster solution must be applied with sharp movements so that it adheres well to the wall between the cells of the reinforcing mesh.

If the first layer has dried well, then you can apply the second. The finishing ball of plaster is made from a thicker solution. Application must be done from bottom to top.

Renovation is a complex set of works that help turn an ordinary room into something beautiful, stylish and comfortable. To achieve the best results, it is important to use materials correctly and choose those that are best suited for a particular type of job. The use of plaster mesh is becoming more and more frequent, so you need to know all its advantages and disadvantages.

Peculiarities

Modern renovation is not complete without the use of plaster, because the walls, floor and ceiling are finished form must be completely smooth, be heat and sound insulated, and serve for a long time and reliably. If you do not apply a layer of plaster to the rough wall, you will not be able to achieve the desired effect. In order for the layer of plaster to hold securely and not crack or fall off, it is important to strengthen it. The mesh is just such a fastening mechanism.

If previously more primitive and inconvenient materials were used to strengthen the surface for plaster, then with the advent of a mesh made of new materials, working has become much more convenient and faster. Plaster mesh can be made of various materials, have different cell sizes, shapes, and weight of the canvas. All this determines different result from its use.

If necessary to veneer outer wall, then it is often taken reinforced mesh with large cells, in some cases a chain-link is used.

Almost everyone hardware store now has a choice of mesh for plaster, which have different lengths, which makes it possible to select the optimal quantity required material for carrying out work. The principle of working with it is quite simple, which makes its use more popular for renovating all rooms in a house, apartment, office, obtaining excellent final results.

Plaster mesh is very important element for repair work, because with its use, finishing the walls is easier, and the result lasts much longer. After plastering using a mesh, the wall will not change its properties, and therefore the wallpaper will not be threatened by tears at the joints or along the canvas itself. Painted walls are most susceptible to showing through imperfections that appear on them, Therefore, when choosing this method, it is important to take care of the reliability of the wall and its strength.

Any type of cladding will be much more confidently attached to a surface that is properly processed, and its service life will increase several times if the surface has been reinforced and protected from various kinds influences and unpleasant environmental factors.

Kinds

Due to the great popularity of the material, it was necessary to create a certain number of options that would allow puttying on different surfaces as convenient and efficient as possible. Thus, there are such types of mesh as:

• Masonry mesh- This is a construction type that is best placed on brickwork. The material of manufacture is polymer, and the cell size is 5 by 5 mm.
• Universal– a small cell is used to reinforce the finishing and plaster mixture. It is convenient to use in any area due to the optimal cell size, which is 6 by 6 mm.
• Medium universal. The material of manufacture is polyurethane, as in the previous case, but the size is different - 13 by 15 mm.

• Large universal– the cells have dimensions of 22 by 35 mm and with its help you can easily reinforce a large area. It is convenient to make repairs in buildings with large dimensions.
• Fiberglass mesh. Its composition is glass fibers, which are processed in a special way. The cell size is not large and is 5 by 5 mm. This option easily tolerates temperature differences, exposure chemical elements, at the same time it has high strength and can withstand the heavy weight of the plaster. This option is most often used in work because it is light, convenient and has no special contraindications for use.
• Plurima– polypropylene biaxially oriented mesh with a cell of 5 by 6 mm. This option is also convenient to use because it is not exposed to chemical influences, is lightweight and can be used both indoors and outdoors.

• Armaflex– a polypropylene type of mesh with reinforced nodes. The cell in this case is quite long and measures 12 by 15 mm. The mesh has high strength, which is why it is most often used where the putty layer is very large.
• Syntoflex– polypropylene variety with a cell of 12 by 14, 22 or 35 mm. Lightness of the material and lack of reaction to chemical substances allow you to work with the mesh both indoors and outdoors.

• Steel version- These are soldered rods of steel. The size of the cells can be very diverse. It is used for interior decoration, because under the influence of precipitation, steel will not last long and will begin to rust.
• Galvanized version involves intertwining galvanized rods with each other, which is then soldered. This durable material, from which you can level the surface in any conditions, both indoors and outdoors.

• Reinforcing wall finishing assumed the use of metal meshes, which have certain design options - these are welded, woven and expanded metal varieties. Cells can be of different sizes, which is determined by a specific task, for which rods with different thicknesses and types of connections can be used. The resulting mesh has high strength and physical and mechanical characteristics. Wire mesh It is used indoors because it does not tolerate high levels of moisture and under its influence metal corrosion can begin.

• Galvanized variety it is applied for external works for a long time and very successfully, allowing reinforcement to be carried out quickly and efficiently. The size of the cells can be very diverse, and the type of their fastening is welding.

• Reinforcement mesh(also called chain-link) is used if the leveling layer is very thick and complex. When working with a cement wall, you can use any solution, because there are no special selection criteria for such a material, which indicates its versatility. Often, brick, concrete, stone walls, but can also be used for aerated concrete and wooden surfaces.

• Metal grid The expanded metal type can be made in any way. Due to the absence of welding points, the resulting product is durable.

Use mesh for plastering inner surface walls where the layer of material is no more than 30 mm.

• Steel mesh has its advantages, but progress does not stand still and has replaced it new material. Plastic mesh belongs to modern types, it is used on aerated concrete and brick walls. In this case, it is advisable to choose a small cell, because a large one is more suitable for working on facades and plinths. This material has no problems with a wide temperature range; it can even be used to create a thermal insulation layer.
• Fiberglass variation consists of glass in which there are no alkali impurities, but aluminum is added, which helps to significantly increase the strength of the resulting surface. Chemical influences are not dangerous for this material; rotting processes are also avoided, which is why this type is used most often and is considered the main one in the work.

• The polyurethane variety is also universal.. Very convenient to use indoors big size. But the biaxially oriented polymer mesh is the newest material of all existing in this industry. Due to its elasticity and the absence of contraindications for use, it is a universal means for communications that conduct current when working on various facades.

Polypropylene mesh is very durable and can withstand a lot of weight, so it is recommended to use it to strengthen bridges and roads.

• In addition, there is also serpyanka, with which it is very convenient to seal cracks in walls. Thanks to its fiberglass composition and ability to self-adhere to the surface, this material is now indispensable for wall repairs and puttying.

The mounting mesh for plaster is a very convenient invention that has made the repair process simpler and significantly improved its results. Varieties of meshes with different cell sizes help to choose the right one for a certain type of wall.

With a choice between metal and synthetic options Now it is possible to use the mesh both indoors and outdoors, which significantly improves the result of repairs and extends the service life of a particular object.

Which one to choose?

If we consider metal type grids, then there are criteria by which you need to make a choice towards one option or another. These include:

• Qualitative characteristics of the raw materials that are taken to make rod or wire. It is advisable to have information about the grade of steel alloy from which the mesh is made, which will show how high quality the product is.
• The cost of stacks will be higher for small traders, so for large quantities you should contact enterprises that deal with this. High speed products make it possible to pay for it, which means not to charge too high prices.
• The quality of the rods themselves, the presence of galvanized coating. Non-galvanized mesh can be used for interior works, if it is used for exterior purposes and is not coated with a special compound, then it will soon rust and traces of corrosion may reach the outer layer of finishing.
• You need to choose the right type of mesh. If it is welded, then it will be better to hold the plaster on itself than twisted one. This is important when work is carried out on a brick wall or aerated concrete outside the house, where the layer of plaster can reach significant sizes.
• The rods must have a clearly standardized thickness of the rods, therefore, when choosing a mesh, you need to pay attention to GOST standards in each package.

The plastic version of the mesh for plaster is not inferior to any of the above options; it can be used on any surface, inside or outside, for the base and facade. The only case when it is worth turning to a metal mesh is if there is a thick layer of plaster, which has considerable weight; in all other situations, modern meshes will be much more convenient to use.

Using the plastic option also involves choosing the right size cells, which often comes down to 6 by 6 mm, but you can choose another option depending on your wishes and ease of use.

Dimensions

Since there are quite a lot of mesh options for applying plaster, there are a certain number of cell sizes for each of them. Despite big choice, there are standards that are best suited for each type and determine the size of the cell. Here they are:

• For masonry type mesh the most convenient cell size is 5 by 5 mm. The main production material is polymers.
• For universal type There are several options - from a small cell 6 by 6 and a medium cell 13 by 15 to a large cell 22 by 35 mm. The material for production is polyurethane. Used for interior decoration.
• For fiberglass mesh the optimal cell size will be 5 by 5 mm, and it is made from fiberglass material.
• Plurima characterized by the same cell size, but it is made of polypropylene and can be used for a wide variety of types of work.
• For metal mesh There are no clear cell sizes; it is selected for a specific type of activity, but due to its composition, it can only be used indoors.
• For galvanized mesh The optimal cell sizes are 10x10 and 20x20, but if necessary, you can find more dimensions. This mesh is made from rods that are connected by soldering, which ensures long service life and reliability of the finished surface.
• Armaflex most often made with cells 12 by 15 mm and used in cases where work involves thick layer solution.

• At the syntoflex There is a fairly wide range of cells that can be used in work - these are 10 by 10, 12 by 14, 20 by 20, 22 by 35. It is made of polypropylene.
• For steel mesh The cell size can be different, but the most popular is 20x20 mm. It is made from rods made of metal, which are soldered together. To fix it on the surface, you need a corner.
• For plastic mesh There are no specific standards for cell size. It is most often used to attach foam plastic and is placed on glue, after which it is processed finishing putty. After this, the process can be considered complete.

It is important to choose the right mesh for repair and pay attention to GOST indicated on the packaging. This is the kind of material that will make it possible to make good repair and guarantees the durability of the coating, otherwise you can expect any result from repair work on mesh plastering inside and outside the room.

Installation

Since there are many varieties of plaster mesh, there are also several ways to attach it. The most popular of them are:

• applying the plaster mixture;
• use of self-tapping screws;
• use of dowel nails;
• fastening with screws.

If the first layer of plaster is applied, the mesh is simply pressed into it. With these actions you can effectively level the wall and get a strong coating. But for decoration, you need to secure the selected canvas using fasteners. If such a zone is small in size, then it can be applied to certain areas. For a painting mesh, a small layer of solution is enough.

If we talk about fiberglass, then to use it you need correct sequence actions:

1. applying markings for fastening beacons;
2. making holes for dowels;
3. the screws are screwed in to a certain depth so that the heads are at the same level;
4. applying the solution to the desired area;
5. you need to immediately fix the mesh on top of the plaster by threading the screw heads;
6. applying the mixture for a new site;
7. it is necessary to attach the next piece of mesh with an overlap of about 10 centimeters;
8. it is necessary to gradually cover the entire room with the solution and apply a mesh to it;
9. after this, beacons are installed;
10. subsequent work is carried out precisely along the beacons in order to obtain a flat surface.

The process of smoothing the mixture over the mesh goes from the middle to its edges. If the thickness of the putty is small, then you can use staples to fix the mesh, and then apply a new layer of putty on top.

If we are talking about metal mesh, then the sequence of work is different:

1. cleaning from grease, washing the surface and wiping with a damp cloth;
2. dividing the mesh into pieces of the desired size using metal scissors;
3. preparing holes for dowels at a distance of 30 cm from each other;
4. using dowels, screws and mounting tape, you need to secure the mesh to the wall surface;
5. a new section of mesh is laid with an overlap of 10 cm;
6. after this comes the installation of beacons and work on them.

The mesh installation technology is suitable not only for walls, but also for ceilings. The main thing is to mix the solution correctly, because for ceiling works The mixture should not be too liquid, otherwise it will not stick to the surface.

The use of reinforcing mesh for ceilings has its own characteristics. It is applied in cases where many small cracks appear on the surface, which cannot be eliminated in the usual way. In order to carry out the installation of reinforcing mesh on the ceiling, you must:

• remove all lagging areas from the surface;
• apply the primer using a penetrating mixture;
• dilute the PVA glue to a liquid state and apply it with a roller to the cracks;
• immediately place a piece of fiberglass on the area coated with glue and apply PVA on top again;
• Each new layer of fiberglass must have an overlap of at least 5 centimeters.

Work is carried out until the entire ceiling is covered, after which you need to wait until the surface is completely dry and begin finishing using any convenient way. By following the above rules, you can easily and correctly renovate any room.

The choice of mesh depends, first of all, on the thickness of the plaster layer. If it is less than 3 cm, then it is recommended to use a fiberglass version, which is placed on the solution. It dries very quickly, which helps strengthen the wall and fully work with it.

If the plaster layer is more than 3 cm, then it is better to use a metal mesh, which can easily cope with such weight and help strengthen the wall surface. Typically this type is used for exterior finishing.

If the work is carried out in the bathroom or pool room, then it is important to choose for the work reinforced material, otherwise the moisture will cause the mesh to become covered with rust, which will appear on the surface of the wall, ruin its appearance and compromise its strength.

If you need to make a plaster finish, then the best option There will be a plastic grill for this. During the finishing process it is important to use a stack with minimum diameter cells. If you need to get rid of a crack on a wall or ceiling and repair it, the most convenient and practical option– this is the use of serpyanka.

To work with slopes, it is important to use a metal grating when a thick layer of plaster is applied. For a thin layer, you can get by with fiberglass, but any work with slopes must necessarily use reinforcing mesh.

When it is necessary to finish the stove, a massive mesh called chain-link is used. It is attached to a composition of cement and clay, after which fiberglass is applied to a thin layer. Next, the finishing process moves to the finishing stage.

There are cases when you can do without the use of reinforcing mesh. But it's still better to use it:

• in the presence of joints made of various materials - walls made of plasterboard and brick, construction of partitions adjacent to another material;
• on the corner parts of the rooms, where bearing wall connects to the interior;
• in the presence of a monolithic concrete surface that is not yet five years old;
• there are places where the plaster has been lying for more than 20 years;
• if the mixture has a high degree of shrinkage;
• when working with drywall;
• If the surface is painted, wallpaper will be glued to it or decorative plaster will be applied.

If you are working with a painting mesh for the first time, you need to know exactly how it should be applied to the surface. The sequence of work in this case comes down to:

• preparing the base for the mesh;
• applying a base layer of putty to the area where the mesh will be applied;
• installation of the grid itself;
• pressing the mesh into the putty;
• leveling the mesh using a spatula so that there are no unevenness or folds on the surface;
• covering the painting mesh with a new layer of putty.

After this, be sure to dry the surface until completely dry and apply a finishing layer of plaster, finally leveling the surface.

If reinforcement is necessary, then the mesh is not placed end-to-end, but with an overlap of at least 10 centimeters.

In order to use the mesh correctly, you need to be able to choose it, and for this it is important to know how the main options for repair meshes differ.

• Putty mesh- a fabric-like material with a cell size of only 2 by 2 mm and a density of 60 g per m2. If you use a mesh with a cell of 5 by 5 mm for work, then you can reinforce the surfaces using a coarser solution. This mesh can be used both indoors and outdoors.
• Serpyanka the structure has the same appearance as the 2x2 putty mesh, but differs in size because it is made in the form of a strip. This strip is small in thickness, and the length can vary from 12 m or more. Important feature Such a coating is that one side has an adhesive base, which can be used to reinforce cracks in the walls.
• Spider mesh- a material that is not similar to fabric, but obtained as a result of pressing a large number of fibers. In a professional environment it is called fiberglass. You can buy it in the form of a roll, the width of which can vary. The minimum is 2 cm, and the maximum is 2 meters.
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The mesh for plaster is the key to the durability of the work performed. Plastering walls – traditional technology leveling and finishing. And not only - plastering is also performed for the purposes of fire protection and sound insulation, during repairs, as a decorative finishing layer or as preparation for finishing... but most often you need gypsum, cement-sand and lime plaster, just as finishing. The use of mesh for plaster is an important condition.

Reinforcement of products made from cement-sand mortars is a condition for their long service life, and plaster layer not an exception. In order for the plaster layer to be durable and serve for a long time, it is reinforced by placing inside a mesh made of plastic, fiberglass, steel; there are a lot of types and materials of mesh. And you need to choose a grid based on certain conditions.

Application of plaster mesh

Although the technology is simple - you need to place a mesh approximately in the middle of the solution layer, 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 solutions, that is, metals, wood, some types of panels. If one or both of these factors are present, then it is important not only to ensure adhesion of the plaster to the wall, the reinforcing mesh must also be firmly fixed. It is not enough to simply lay it in the plaster layer - the result of such work can be a durable layer of plaster that comes off the wall in a single layer.

Fasteners for plaster mesh

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

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

Preparing the surface for plaster

Preparing the surface for plaster is very important. It doesn’t matter whether the layer is reinforced or not - cleaning, dust removal, removal of all old peeling finishes, as well as treatment with penetrating primers or primers is a prerequisite. 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 about 5 mm of mortar is applied to the wall, then the mesh is pressed into it with a wide spatula. The fine-mesh mesh holds up well in the solution. Then this first layer should dry and set. And the last, finishing layer, made with the same plaster composition, completely levels the surface.

Brief overview of plaster mesh

There are a lot of plaster meshes, and new ones are appearing, from the most different materials. Gone are the days when there was only one way to strengthen plaster on the wall and ceiling - wooden shingles. It also happened that they hammered nails and pulled wire over them. But modern expanded metal and woven steel mesh, with or without galvanization, is undoubtedly much stronger and more technologically advanced.

Plastic plaster mesh

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

Polyurethane plastering mesh with fine mesh

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

Large polyurethane plaster mesh

Used for mechanized finishing large areas– warehouses, hangars, public facades and industrial buildings etc. mesh 20*20mm, 30*30 mm, 35*35 mm, mesh is available in rolls.

Fiberglass plaster mesh

In terms of strength it has best characteristics, how plastic mesh, withstands significant breaking forces. Another advantage that many types of plastics do not have is that glass fiber is absolutely chemically inert, and the temperature range of its use is practically unlimited.

Classification of fiberglass plaster mesh

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

For interior plaster Painting and plastering fiberglass mesh is 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 mesh for interior decoration has a higher density - up to 180 g/cm2 and a cell size of 4*4 mm, 5*5 mm.

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

Fiberglass mesh for plastering on plinth

In addition to the base itself, they are also used for the part covered with soil. And also for plastering underground structures and elements. Very strong and dense mesh, for extreme conditions work and heavy loads, are classified as 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 poor resistance to alkaline environments. The main construction finishing mortars are alkaline - they are classified as weak and medium alkali. Therefore, all fiberglass meshes undergo special treatment - impregnation with polyacrylic dispersions. The result is protection for long term. Cement mortar can dissolve and “eat” unprotected fiberglass in a period of approximately from several months to several years.

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

Fiberglass meshes are used not only for plastering surfaces and strengthening joints between walls and blocks of windows, doors, ventilation ducts, etc. In structural “pies” with heat and waterproofing, as well as for strengthening concrete screeds and self-leveling floors, these meshes have shown excellent performance, and very popular.

Steel mesh for plaster

Many types of metal wire mesh are produced. The cell sizes vary, usually up to 50 mm. Steel mesh is 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 made by weaving from wire, like fabric from threads - twill and linen. The cells are small, from 2*2 mm to 15*15 mm, produced in rolls of a meter or 1.5 meter width. The wire used is galvanized and stainless, less often black.

In terms of strength, woven metal mesh is divided into light, medium and heavy, depending on the thickness of the wire used. The main diameters of the wires are from 0.32 mm to 0.8 mm, less often 1 and 1.2 mm.

Rabitz

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

Welded metal mesh for plaster

They are produced black, galvanized and with polymer coatings. Used not only for masonry, concrete screeds and foundations, as well as for strengthening structures with a thick layer of thermal insulation and for finishing surfaces under load.

Can be used 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 mesh has a huge range of applications, cells from 5*5 to 100*100 mm, other sizes are possible, wire thickness is usually up to 3 mm. Output – depends on the thickness of the steel, rolls or sheets.

Mesh with galvanization and heat treatment

For plaster it is also produced special type plaster mesh – galvanized and heat treated. The grids are designed to distribute and hold solutions on vertical surfaces without loss. Cells from 10 mm to 100 mm, many standard sizes of meshes with rectangular cells. Output – rolls and sheets, depending on wire diameters.

Expanded-exhaust plaster mesh

Available in both woven and solid metal sheets 0.5 -1.0 mm thick by drawing and perforating the sheet. They are widely used, including under plaster, along with welded mesh and chain-link mesh. They perform the tasks of holding and adhesion of finishing layers, strengthening them and significantly increasing the resistance to cracking during shrinkage of buildings.

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

Varieties

There are several types of mesh for plaster; They differ in operating parameters and features of use. Today, a number of manufacturers offer a large assortment mesh products.

The following varieties are distinguished:

Prices

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

Approximate price:

• woven fiberglass (1x55 m) - from 750 to 8000 rubles, depending on density;
• based on polypropylene (1x30 m) - from 700 to 1200 rubles;
• made of steel (1x10 m) - from 50 to 95 rubles;
• with 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 construction 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 plastering walls and which is better? There are several rules that help you decide: which type of mesh is more suitable and in which situations, and in which cases you can do without using a reinforcing product.

For cladding ceiling surface, monolithic load-bearing structures made of reinforced concrete and plaster density less than 10 mm, it is not necessary to use mesh padding.

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

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

Galvanized - considered the best option for facade works and for interior cladding in high humidity conditions.

Reinforcement plastic look It is preferable to use mesh for finishing layers with a maximum thickness of 20 mm, as well as in cases where there is a possibility of subsidence of the base. Ideal for plaster surfaces.

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

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

Plastering wall surfaces using a grid

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

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

The technology for plastering wall surfaces includes several stages:

1. Preparing the base. First of all, old finishing material is removed from the surface and crumbling areas 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 this, the cleaned surface is coated with a primer in order to improve the adhesion of the base to plaster material and protecting the wall from exposure to harmful microorganisms.
2. Installation of reinforcing mesh. The first step is to measure the height of the wall, and then cut the canvas to the required size. Cut the mesh using scissors designed for cutting metal. The cuts are attached to the wall surface by overlapping them by about 10 cm. How to secure the mesh for plaster? It is fastened with self-tapping screws, fixed with washers or galvanized tape.
3. Installation of plaster beacons. To level the surface, it is preferable to use a plaster profile. First, the location of the outer beacon is indicated (vertically); they should be secured using two screws. After this, the outer beacon is mounted with reverse side. To evenly position all the guides, pull the thread between the outer beacons. Then install intermediate beacons at a distance smaller than the length of the rule.
On a note! Use a level to check the position of the beacon.

4. Plaster coating. Before you start applying the material, prepare a solution with a consistency close to sour cream. The primary layer is applied by spraying using 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 the primary layer has dried, prepare a thicker substance and apply it to the wall surfaces with a trowel. Level the surface using a rule, pressing it against the beacons and turning from bottom to top to remove excess solution. After the plaster layer has dried, remove the beacons and fill the recesses with mortar.
5. Aligning corners. The joints between the ceiling surface and the wall are leveled manually with an angled spatula. External corners are leveled using perforated steel corners. This completes the work of plastering the walls.

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

Installation method for fiberglass mesh:

Preparing to install 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 mesh, smooth it out - from the center of the canvas to the edges. Press the edges at the corners with a rule or an angular spatula.

The method of installing a polymer mesh involves a number of stages.

1. At the first stage, the base is prepared. Preparatory work include cleaning and priming the surface.
2. The next step is to measure the wall surfaces and cut the canvas in accordance with the measurements taken and add a margin of approximately 10 cm (for overlapping panels).
3. After this, the adhesive-based composition is prepared.
4. The main stage is applying the initial plaster layer with a density of 3-5 mm with pressing the painting mesh into the solution.
5. After original layer When it dries, the surface is covered with a primer and a final layer of plaster is applied, leveling is carried out according to the rule.
6. At the last stage, the dried wall surfaces are sanded.

A few useful quick tips will allow you to complete the job of plastering walls with the highest quality possible.

1. The denser the plaster layer applied to the base of brick or concrete, the stronger the mounted steel mesh should be.
2. Simple steel mesh It is not advisable to use it in rooms with high humidity levels, for example, in baths and bathrooms, as well as for external cladding. The whole point is that steel types materials are prone to rust. It is preferable to install a mesh made of fiberglass or welded with a galvanized coating.
3. Before installing a metal reinforcing product, it must be degreased.
4. It is unacceptable to use a reinforcing mesh made of plastic for plaster mortar prepared on the basis of cement, since over time the cement mixture will corrode the product.
5. Many people, when performing work on plastering walls, first lay the mesh to the wall surface and only then plaster - professionals do not advise doing this: as a result, cavities may form in the cells and the degree of adhesion will decrease.
6. When calculating the required number of dowels, keep in mind that per 1 sq. m. approximately 16-20 pcs are required.
7. When installing reinforcing material, do not allow it to sag or peel off from the surface by more than 10 mm.
8. 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.
9. The fiberglass mesh must be impregnated with a polyacrylic compound. If the mesh is not impregnated, it cannot be used with plaster mortar, otherwise it will gradually collapse under the influence of alkalis.
10. If shingles were used to decorate the wooden surfaces of the walls, it is preferable to choose a chain-link mesh.
11. With a layer density of about 50 mm, due to strong surface differences, it is undesirable to plaster the walls. Preferably used for decoration Wall panels- this finishing material will help hide existing defects.
12. In the case of plastering small areas, it can be used as fasteners. plaster mixture. 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 this to be done efficiently. The presence of a mesh extends 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

Watch the features of plastering walls with mesh in the video:

In building construction and production various types finishing works The use of metal mesh is becoming increasingly widespread. In order not to make a mistake when choosing a reinforcing metal mesh, you need to understand in advance all the pros and cons of its use. Knowing the characteristics of the types of this material will help you make the right and informed choice.

Peculiarities

Plastering building facades or interior spaces using decorative compounds is one of the most common and cost-effective finishing options. A wide variety of high-quality mixtures, distinguished by a variety of colors and textures, allows you to be confident in the attractiveness of the tiled surface.

The only drawback is the not very high strength of this finish. To increase its reliability and durability, special reinforcing materials are used. Their use helps prevent the appearance of cracks during inevitable shrinkage or movement of a new structure, improves the adhesive base and plaster mixtures.

Reinforcing structures are made from various materials, as a result of which they acquire specific properties that determine the scope of their application. Most often when performing plastering works apply:

• polymer;
• plastic;
• fiberglass;
• metal mesh.

The choice of one type or another, first of all, depends on the expected thickness of the plaster layer. You should also pay attention to finishing materials and the composition of mixtures for decorative coatings.

Reinforcing metal mesh

This material is the most universal reinforcing product. Its main functions are to strengthen and protect the plastered surface from mechanical damage. It prevents the possibility of cracking of the plaster layer due to sudden temperature changes. The rough finishing layer is more even and smooth, better prepared for finishing work.

Reinforcement with metal mesh helps to further strengthen structures that are not very strong and reliable.

In the production of this type of building materials, wire or metal rods are used. Depending on their thickness, meshes are divided into the following categories:

• lungs;
• average;
• heavy.

Advantages and disadvantages

Today the range of plaster mesh is very diverse. Constructions made of polyurethane, plastic and fiberglass have become available for use. But the most popular are those made from metals.

This is due to many features of their technical characteristics:

• The metal mesh is particularly durable, which helps it withstand heavy loads. If for alignment large area If the surface needs to be coated with a thick layer of plaster, it is better not to save money and purchase just such a material for reinforcement.
• Its use is possible when working on any base and with different compositions of rough finishing solutions.
• The application of the plaster layer is not limited by its thickness. When working with thin or light substrates, it is possible to apply a minimum layer of up to 20 mm. If it is necessary to equalize differences in surface heights on vertical wall, then it is permissible to apply a solution with a thickness of more than 50 mm.

• In preparation for plastering a metal base, you can weld a reinforcing mesh to it, which will ensure greater reliability of the entire structure.
• To cut out individual pieces of a free configuration from a solid fabric, it is enough to use hand tools, for example, metal cutting scissors or wire cutters.
• Fastening such reinforcement does not require much time and effort. To create a strong connection with the base, it is enough to secure the mesh in only a few places.

The main disadvantage of this type of material is its significant weight. It can be strengthened only on surfaces that can withstand the total weight of the metal mesh and finishing leveling mixtures. Reinforcement should not be used on surfaces made of plasterboard or hollow brick.

Types of reinforcing metal mesh

Reinforcing mesh is used both for plastering and for creating cement screeds or concrete pads. In their production, metal blanks are used, the thickness of which depends on the expected load on the lined surface. They also differ in cell size. For plastering work, lighter options are used, the wire thickness of which does not exceed 1.5 mm and with a cell size of up to 30 mm.

The most popular product sizes according to GOST:

• 10x10;
• 25x25 mm.

Manufacturers offer customers rolled and sheet reinforcing mesh. Each of these types is convenient to use in its own way. When carrying out finishing work on long areas, it is better to use rolled reinforcing mesh. This will require additional effort when stretching and fastening, but will significantly improve the quality and appearance of the finished coating - it will be more even, since the work uses a single piece of canvas, characterized by the absence of seams and overlays.

For artificial stone need to be selected small sizes coverings.

The technology for attaching the mesh differs depending on the base of the surface. It is enough to weld it to the metal using a welding machine. welding work. If the mesh is quite thin, then it is conveniently attached to a wooden base with an industrial stapler that shoots large staples.

To secure thicker reinforcement, you will need screws or nails. Reinforcing material can be attached to brick or concrete bases using dowels and washers.

Currently, several types are most widespread on the market:

• welded;
• woven;
• expanded metal all-metal;
• chain-link

Welded

This material is increasingly popular among buyers due to its relatively low price and very High Quality, it can also be used at any stage of construction or finishing. More often welded mesh used for the following types works:

• strengthening the foundation of the building;
• reinforcement of walls made of bricks and various blocks;
• when performing finishing work on load-bearing surfaces;
• when installing a thermal insulation layer.

Made from metal rods different diameters by welding them. In this case, the distance between them can differ quite greatly. The weight of the mesh is small compared to other types.

Particular attention should be paid to the material from which it is made. It is optimal to use stainless metals and their alloys, since the resulting corrosion leads to premature destruction of structures.

The main disadvantage of this type of plaster fittings is the weakness of the welds - they can cause ruptures and rust. How smaller size cells, the higher the probability of destruction, since there are more of these seams. In addition, the mesh for a long time When stored in rolls, it becomes deformed, which significantly complicates subsequent work.

Woven

This type of metal mesh is universal building material. It is a fabric made of cross-woven wires with the same cross-sectional size. It is produced on specialized looms from stainless and low-carbon steel, brass and other non-ferrous metals. Can be used in the production of painted steel threads. Cells can be different sizes and shapes, such as square or rectangular.

Stainless woven mesh is widely used in construction., made from the same material. Most often it is used as reinforcement to prevent cracking or sifting bulk materials in the production of mixtures of sand and cement.

Expanded metal mesh

On construction markets it can be found under the name “cutting” or the abbreviation TsPVS. This type of mesh is made from a solid sheet of metal, the thickness of which can reach 2 mm, but plates up to 1.5 mm are most often used. The manufacturing technology involves cutting holes and further stretching the material. As a result, cells are formed that are arranged in a checkerboard pattern. This gives finished product special strength and flexibility. When one or more cells are deformed, the rest of the web is not subject to further destruction, but it is quite difficult to restore after storage in rolls.

This product is manufactured without using plastic protection, which can cause corrosion. The use of galvanized alloys significantly improves the anti-corrosion properties of the material, which is especially important in the aggressive environment of plastering compositions. At the final stages of finishing, no traces of rust appear. The shelf life also increases significantly.

Depending on the base, its weight may vary. Distinctive feature is fire resistance and can be used on any surface. The ability to withstand heavy loads allows it to be used when reinforcing concrete screeds.

The main tasks of the TsPVS:

• protection of the plastered ceiling and walls from mechanical damage and sudden fluctuations in air temperature;
• preventing the appearance of cracks due to technological violations during finishing work;
• significant extension warranty period plastering services.

Chainlink

It is the most commonly used and most popular material among craftsmen around the world. The use of this mesh is not limited to its presence in fences - it is actively used as a reinforcing fabric.