How to plaster a façade using a mesh using technology. Plastering on metal mesh Plastering walls on metal mesh

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

Area of ​​use

Reinforcing mesh for plastering walls has replaced old methods (shingles, driven nails) used to improve the adhesion of the finishing layer to the base surface. It is made from materials that differ in their properties. The market offers products from large quantity different manufacturers.

Used for both interior and exterior work. It is the basis of the leveling coating. The latter as a result becomes stronger and more durable. The mesh should be used to avoid the appearance of peeling, cracking, or to stop the process of crack growth itself.

Construction mesh for plaster is used to qualitatively prepare the base for further measures to decorate work surfaces. At correct installation and further plastering, it extends the service 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;

Products have all the advantages and disadvantages of the materials used to produce them.

A more detailed classification is presented in the table below.

View	Cell size, mm	Characteristic
masonry (painting)	5*5	plastic sheet used when working outside and inside buildings using gypsum mixtures
universal: small, medium, large	6*6, 14*15, 22*35	fine mesh version - suitable mesh for plastering interior walls, and coarse-mesh can withstand temperature changes and external loads 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 interior work

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

Selection of working material

The main determining factor when selecting a material is its suitability for specific conditions, so the mesh for plastering walls is selected taking into account the following number of factors:

• the required thickness of the created finishing coating;
• kind plaster mixture which one 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 using the following types of mixtures:

• cement-lime;
• gypsum;
• cement-sand;
• clay and others.

Various additives are often added to such compositions. They, together with the main components, have a certain level of chemical activity. Which determines the degree of their influence on different materials, from which the mesh for reinforcement is made.

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

• It is recommended to use glass fabric products when the thickness of the created layer of plaster is up to 3 cm, when there are also depressions and cracks to stop the expansion of old ones and the formation of new ones;
• if the height of the coating being formed exceeds 3 cm, then a more appropriate option would be metal: it can withstand the weight of the finish without peeling off;
• It is better to use plastic products for gypsum mortars that are thin in thickness, and, for example, cement-sand compositions corrode such reinforcing material over time;
• when using clay-based mixtures, 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 putty work;
• fiberglass or galvanized (ordinary metal ones are not suitable), products are good way reinforce rooms with high humidity;
• when there is a need to plaster the stove with a cement-clay mortar, then you can use chain-link, and if it is a thin layer, fiberglass;
• steel products are suitable for joint use with compositions containing cement;
• during the plastering works for finishing the external walls of a house, material with cells of 3*3 cm is usually used, and larger sizes are selected to tighten the surface;
• For internal work, the material is mainly used 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 recommendations outlined above will allow you to choose the most practical material.

Features of installation of different types of mesh

Metal mesh for plaster, fiberglass or plastic, can be mounted using different ways. The choice of fastening 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:

• self-tapping screws or dowel-nails, screws.

The first layer of plaster to level the walls is reinforced by pressing the mesh into the solution of the required thickness applied to the surface.

The optimal way to create a finishing coating (covering or decor) is to secure the adhesive fabric to a dry base with special fasteners.

When the area to be finished is small, then you can use the working mixture for fixation, applying it pointwise.

The painting mesh is easy enough to fix thin layer solution.

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

• carry out markings for the installation of beacons;
• holes are drilled along it, into which dowels are then inserted;
• align the screw heads according to the level;
• apply the solution to an area equal to the width of the fabric used;
• immediately apply a mesh to the plaster, threading screw heads through it;
• add the mixture further;
• overlap (10 cm) fix the next strip;
• This continues until the entire room is reinforced;
• install beacons.

The solution should be smoothed evenly over the canvas, starting from the middle of the strip, moving towards its edges. When creating a thin layer, it pays to secure fiberglass to staples and then apply putty.

The metal plaster mesh is attached in the following sequence:

• cleared of lubricant composition, rinsing with water or wiping with a damp cloth;
• use metal scissors to cut the canvas into pieces of the required size;
• drill holes with a diameter of 6 mm for dowels every 25-30 cm (about 3 mm deep than the length of the plastic part of the fastener), insert them;
• Using screws and mounting tape, secure the material to the surface;
• the following fragments are laid with a 10 cm overlap;
• 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 products reinforce the plaster with mesh.

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

The 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 correct execution When reinforcing walls with mesh, it is necessary to take into account the type of mortar used, the installation location (outside or inside the building), and the expected height of the coating. Also required to use suitable technology installation Compliance with the listed conditions allows you to plaster walls or ceilings with high quality, minimize the possibility of cracking, and not be afraid of shrinkage of the house.

Tsugunov Anton Valerievich

Reading time: 5 minutes

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

Application

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

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

Types of mesh

For the manufacture of mesh, different materials are used, which, along with other parameters, determine its type, characteristics and scope of application.

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

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

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

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

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

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

Mesh laying technology

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

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

Metal

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

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

Plastic

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

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

Peculiarities

Modern renovation cannot do without the use of plaster, because the finished walls, floor and ceiling must be completely smooth, 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 every hardware store now has a selection of mesh for plaster, which have different lengths, which makes it possible to choose 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 construction variety, which 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, and 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. The lightness of the material and the lack of reaction to chemicals 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 is a 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 the type of their connection. The resulting mesh has high strength and physical and mechanical characteristics. Wire mesh 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. While working with 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.

A mesh is used for plastering the inner surface of 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 universal remedy 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. Types of meshes with different sizes cells help to choose the right one for a certain type of wall.

Thanks to the ability to choose between metal and synthetic options, it is now 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 the metal type of mesh, then there are criteria by which you need to make a choice in favor of 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, because in large quantities You should contact companies that do this. Large product turnover makes it possible to recoup 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 work, but if it is used for exterior work and is not coated with a special compound, 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 with brick wall or from 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, there will be a thick layer of plaster, which has considerable weight; in all other situations, modern meshes will be much more convenient to use.

Usage plastic version presupposes choice 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 the most diverse different types works
• For metal mesh there are no clear cell sizes, it is selected according to specific type activities, 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 large 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 the correct sequence of 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 proceeds 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 a lot appears on the surface small cracks, get rid of them in the usual way does not work. 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 decoration.

If work is carried out in a bathroom or pool room, then it is important to choose reinforced material for the work, otherwise 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 do plaster finish, That the best option There will be a plastic grill for this. During the finishing process, it is important to use a stack with a minimum cell diameter. If you need to get rid of a crack on a wall or ceiling and repair it, the most convenient and practical option is to use a 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:

• if there are joints from various materials– walls made of plasterboard and brick, construction of partitions adjacent to other materials;
• on the corner parts of the rooms, where bearing wall connects to the interior;
• in the presence of a monolithic concrete surface, who 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 finishing layer 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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Grid plaster is an effective way to rough-finish walls. A particular advantage of this method is that it allows you to apply a thick layer of mortar, which during the finishing process will not slide or peel off under its own weight. What is the procedure itself, what types of mesh should be used in certain cases, and how to attach them? More on this later.

When plastering walls without using a reinforcing layer, there is a high risk that the applied solution will simply fall off the base. And when finishing brick and wooden surfaces the plaster may begin to peel and crumble even after repairs have been made. This usually occurs due to insufficient adhesion of the materials indicated above. The mesh allows you to form monolithic slab, which is not afraid of any loads. Different meshes are designed for a specific load, and the type of material used depends on the thickness of the plaster layer.

On a note! With the help of reinforcement, a durable coating is created that will not crack during long-term use. Even if the solution preparation technology is violated, the mesh will ensure the integrity of the plaster layer.

Types of grids

There are several types of products used for reinforcement, the main ones being the following materials:

• fiberglass;
• metal.

Types of reinforcing mesh: a – metal; b – fiberglass

When applying a thin layer of mortar to a flat surface, fiberglass sheeting is usually used. For finishing curved walls, when the thickness of the plaster is more than 2 centimeters, only a metal product is suitable.

In turn, metal mesh also comes in several types:

• woven – durable and flexible material, which is made from small cross-section wire. This product is used for both external and internal work. When choosing woven fabric for reinforcement, it should be taken into account that optimal size the cells in this case are 1x1 cm;
• wicker - also known as chain-link mesh. Best suited for finishing large surfaces. The most common cell size is 2x2 cm;
• welded - made from wire using spot welding. The rods located perpendicular to each other form square cells, the optimal size of which for reinforcement is 2-3 cm. Welded products are most often used for finishing buildings subject to severe shrinkage;
• expanded metal- made from sheet metal by forming diamond-shaped cells on a special machine. Such material is usually installed in cases where a small solution consumption is expected per 1 m2.

How to attach metal mesh?

To work with a metal mesh you will need self-tapping screws, construction dowels and metal mounting tape.

1. Before installing the canvas, it is necessary to cut off the required piece, having previously measured the area on which the plaster will be applied in the future. To cut thin material, metal scissors will be sufficient. If the product is made of wire with a diameter of 2 mm or more, you will need a grinder. The cut fabric must be degreased by wiping it with a rag moistened with a solvent.
2. Attaching the mesh under the plaster should begin from the ceiling. The top of the material is secured along its entire length with self-tapping screws, under the heads of which cut pieces of mounting tape are placed. Wide washers can also be used as spacers, but they are much more expensive than tape.
3. When installing on a concrete or brick surface, you need to drill holes in the wall and insert plastic dowels into them.
4. The distance between the screws depends on the size of the cells and the thickness of the mesh itself. But in any case, it is desirable that the fastening step be no more than 40-50 cm. In places of fixation, the canvas may come into contact with the wall, and in the spaces between fasteners it should not contact the surface, since in this case the quality of the plaster layer will deteriorate.
5. At the joints, the material is installed with an overlap of 8-10 cm.
6. A properly secured fabric should be well tensioned. If the material does not vibrate in places where there are no fasteners, then everything is in order. Otherwise, voids may form under the mesh, which will negatively affect the quality of the finish.

Installation of fiberglass sheeting

In this case, the plaster mesh is attached to the wall by fixing the material only along the perimeter of the canvas. First, using self-tapping screws, secure the upper edge of the mesh in several places, and then all other sides. Additional fasteners are usually not used, since later, when applying the solution, the mesh is securely fixed in the thickness of the plaster.

It is possible to fix the fiberglass mesh on the wall with just a plaster solution; if difficulties arise, you can use self-tapping screws

Since the mesh is initially rolled into rolls, for ease of installation it is better to unwind and fasten the material along the walls, parallel to the floor. You need to start fastening from the top, from any corner of the room. The joints are overlapped with an overlap of 15-20 cm.

You should know! It is best to cut the material so that you can stretch the whole fabric. This will ensure higher strength of the plaster layer.

Preparing the wall for plaster and installing beacons

Even when using a mesh, the surface requires preliminary preparation:

• First of all, the wall is freed from old decoration(if any) – paints, plasters, etc.
• Next, dust is removed from the surface. If there is fungus and mold on the wall, the affected areas should be cleaned with a wire brush.
• After this, the surface is treated with a primer, which improves the quality of adhesion, strengthens the base and prevents the formation of mold and corrosion.

After preparing the base and installing the reinforcing sheet, it is necessary to help form a smooth surface during the plastering process. A special profile is used as beacons.

Installation is as follows:

1. Using building level, set the outer profile in a strictly vertical position and secure it with two self-tapping screws.
2. Next, the beacon is secured using gypsum mortar.
3. The next step is to install a beacon on the other edge of the wall. To mount all profiles in the same plane, a thread is pulled between the outer guides.
4. Then the remaining beacons are installed, the distance between which should be less than the length of the rule.

Plastering the surface

After installing the beacons, you can proceed to the plastering process. Plastering walls on a grid is carried out in several stages, at each of which one layer of mortar is applied.

First stage. Plastering is usually carried out in 2 or 3 layers, depending on the material of the walls. The initial layer is applied by “spraying”. To do this, prepare a solution whose consistency should resemble sour cream. Ready mixture throw on with a trowel or ladle in any order. The solution can be spread, but the first option is easier and faster. The applied mixture is leveled with a spatula. The thickness of the “spray” layer should be about 10 mm.

Second phase. After the first layer has completely dried, a thicker mixture of dough-like consistency is kneaded. The solution applied using a trowel is leveled with a rule, which is pressed against the beacons and pulled from the bottom up. This layer should completely cover the reinforcing mesh. After the solution has set, the profiles are pulled out and the remaining furrows are sealed.

Third stage. The final procedure is the final leveling of the frozen surface. To do this, prepare a liquid solution and, applying it to the wall, rub it in a circular motion using a grater.

The above plastering technology is suitable for finishing any surface, regardless of what kind of reinforcing mesh is used.

Mesh plaster is effective way rough wall finishing. But what is the essence of this method, which grid to choose and in what cases should it be used? Next, we will try to answer these and some other questions related to applying plaster to the mesh.

Why do you need a plaster mesh?

As you know, plaster is universal material, as it can be applied to almost any surface. However, not all of them have sufficient adhesion to the plaster mortar, as a result of which the finish can peel off and crumble. Moreover, sometimes this process begins almost immediately after the repair is completed.

Such surfaces primarily include brick and wooden walls. Accordingly, the use of plaster mesh will prevent this process. In addition, this material is used for another reason - it helps reduce surface cracking, which is especially important if the finishing is done in a thick layer.

Types of mesh and their application

Today there are several types of meshes on the construction market. First of all, they differ in the material from which they are made.

The following types can be used for plaster:

• Fiberglass;
• Metal.

If the wall surface is fairly smooth and the plaster will be applied in a thin layer, then a fiberglass reinforcing sheet will be sufficient to strengthen the finish. But if the walls are crooked and the thickness of the plaster is more than two centimeters, then you cannot do without a metal mesh.

Unlike fiberglass, metal mesh comes in different types:

• Woven;
• Wicker;
• Welded;
• Expanded metal.

Now let’s look at the features of each type of material, which will allow you to make the right choice when purchasing it.

Woven

This mesh is a fairly flexible fabric made from durable thin wire. It is sold in large rolls, making it quite convenient to transport.

Most often it is also used for interior work. The only thing when choosing this material, you need to pay attention to the cross section of the cell. Woven plaster mesh 10x10 mm is the best option.

Advice! Required condition The use of this fabric is the presence of a zinc coating on it.

Wicker

This material is also called mesh. As you might guess, it is done by weaving wire.

Most often, the cell cross-section of this plaster mesh is 20x20 mm. Most often it is used to strengthen large areas of walls and facades. The material is also sold in rolls, like the previous canvas.

Advice! If plastering is carried out with a clay-based solution, then a 50x50 mm plaster mesh is used for these purposes, i.e. with a large cell cross-section.

Welded

Welded mesh is made by joining wires using the welding method. This fabric has symmetrical square cells.

Most often, the wire for its manufacture is galvanized or treated with a special polymer protective composition. Typically, this material is used for plastering walls subject to severe shrinkage. Thus, welded mesh can be used when plastering new buildings or buildings that stand on moving soils.

Expanded metal

The TsPVS plaster mesh is quite different complex process manufacturing. It is based on a metal sheet, in which holes are made on a special machine. After this, such metal is subjected to tension, as a result of which it turns into a mesh.

The cells have the shape of diamonds and are arranged in a checkerboard pattern. This material is used only in cases where low consumption is expected. plaster mortar per one square meter.

TsPVS is also sold in rolls one meter wide and of different lengths. As a rule, the price for expanded metal mesh is the highest.

Technology of applying plaster to mesh

Preparing the base

Despite the use of mesh, the base still needs to be carefully prepared before plastering:

• First of all, the old coating is removed from the wall - paint, plaster, etc.
• All peeling and crumbling areas must be removed.
• Then the base is cleaned of dust. If there are traces of mold or mildew on the surface, the wall must be cleaned with a wire brush.
• A layer of primer is applied to a solid and clean wall surface, which improves adhesion, strengthens the base and protects the wall from the effects of microorganisms.

Mesh installation

After the base has been prepared and coated with primer, the plaster mesh can be installed.

The work is carried out in the following order:

• The first step is to measure the height of the wall that will be plastered.
• Next, you need to unroll the roll and cut the blades required size special metal scissors.
• After all the pieces are prepared, they should be attached to the wall. Installation of plaster mesh is usually done with self-tapping screws or construction nails. The canvases should overlap 10 cm. To ensure that the mesh is securely fixed, it is necessary to use washers or perforated galvanized tape.

Note! When installing the mesh, you should pay attention so that it does not sag or lag behind the wall by more than 1 cm.

It must be said that in most cases, for internal and, a plaster mesh of 5 - 5 mm or with cells of 10 by 10 mm is used, with the exception of certain cases, which are indicated above.

Installation of beacons

After the mesh is securely fixed to the wall, you need to install beacons with your own hands, thanks to which a flat surface of the walls is achieved. For these purposes, a plaster profile should be used.

Installation is carried out in the following order:

• First of all, the vertical position of the outer beacon is set using two self-tapping screws. The position of the profile should be controlled using a building level.
• Then the profile is fixed on self-tapping screws using gypsum mortar, which quickly hardens.
• After this, the outermost beacon is installed on the other side of the wall. To ensure that the remaining guides are located in the same plane, you can stretch a thread between the outer beacons.
• Next, intermediate profiles are mounted in increments smaller than the length of the rule, which will allow the tool to rest on them when leveling the wall.

Applying plaster

After installing the beacons, you can proceed directly to plastering.

The instructions look like this:

• Immediately before finishing, it is necessary to have a creamy consistency.
• Then the first layer of plaster is applied, which is called spraying. The composition is thrown onto the walls using a trowel or ladle. While doing this work, some force should be applied so that the mixture sticks to the surface and does not slide down.

The spray layer should be about 1 cm.

• After the spray has set, you should prepare a thicker solution and apply it to the walls using a trowel. If the required thickness is achieved, then the surface must be leveled using the rule. To do this, the tool should be pressed against the beacons and pulled from the bottom up, which will allow the solution to be rubbed in and its excess removed.
• When the plaster has set, you need to remove the beacons and seal the remaining marks with a solution.
• The final step is to level the corners. Joints between wall and ceiling, as well as internal corners, leveled using an angle spatula. For finishing external corners metal perforated corners are used.

At this point the plastering process is completed, now the mesh and plaster form on the wall durable coating which can last for many years.

I must say that we considered the installation of metal mesh. If fiberglass sheeting is used, it is usually glued to the wall directly during the plaster application process.

Conclusion

Having understood the types and types of mesh for plaster, as well as their purpose, it will not be difficult to choose the right material. However, to achieve a positive effect from its use, it is necessary to follow the finishing technology described above.

For more information on this topic, watch the video in this article.