Review and tips for choosing reinforcing mesh for plastering walls. Why do you need reinforcing mesh under plaster? The role of mesh in plaster

The mesh for plaster is the key to the durability of the work performed. Plastering walls is a traditional leveling and finishing technology. And not only - plaster 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 gypsum, cement-sand and lime plaster is needed, 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 the plaster layer is no exception. In order for the plaster layer to be durable and serve for a long time, it is reinforced by placing 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 complex cases- this is 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 - concrete and brick, although they good adhesion, the mesh is fastened with dowels, using large washers, to wooden walls - sometimes with nails, but it is better to fasten it 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 extreme. The thickness of the applied layer is 15-20 mm plus the surface material that 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. Properly prepared surface with good adhesion, flat wall, which does not require a thick layer for leveling - if all these conditions are met, then a thin, strong and elastic mesh should simply be correctly placed in the body of the plaster layer. First, a layer of mortar of about 5 mm is applied to the wall, then the mesh is pressed into it with a wide spatula. The 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 the 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 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 of large areas - warehouses, hangars, facades of public 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 completely 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 plastering, 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 have a higher density - up to 180 g/cm2 and a cell from 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, belong to 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 long-term protection. Cement mortar can dissolve and “eat” unprotected fiberglass in a period of approximately 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 corners. 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 mesh are produced from metal wire. 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 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.

Chainlink mesh

They also produce galvanized and 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 retain 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.

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

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

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

Types of meshes, features and applications

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

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

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

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

Which mesh should I use and in what cases?

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

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

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

The nuances of installing a mesh with your own hands

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

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

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

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

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

Material cost

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

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

What is a mesh for plastering walls?

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

The following varieties are distinguished:

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

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

How to choose a mesh for plastering work?

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

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

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

How to work with reinforcing mesh?

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

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

The price of reinforcing mesh for plaster will depend on the type chosen. The larger the cell size, the correspondingly more expensive the cost of the material.

No repair is complete without leveling the surfaces; plaster additionally provides protection, heat and sound insulation, thereby performing both aesthetic and practical functions. For the reliability and strength of the rough finish, a mesh is needed for plastering walls, ceilings, and floors, which secures the leveling layer and prevents the mortar from peeling and cracking.

Facade mesh for plaster, convenient way mounting on a mushroom dowel

Scope and types of reinforcing mesh for plaster

Previously, shingles were used to secure plaster, nails were often driven in, and later chain-link appeared. These traditional technologies have been preserved to this day, and along with them, new materials have appeared that significantly improve the quality of rough finishing, facilitate and speed up the repair process. Today, reinforced mesh for plastering walls is presented in wide range and its choice depends on the type of solution, layer thickness, area of ​​application: exterior or interior decoration, and operating conditions: microclimate. Plaster mesh– this is the basis of the leveling layer, which makes it reliable, resistant to mechanical stress, and capable of withstanding difficult chemical and biological operating conditions. Prevents peeling, bubbling and cracking of the solution.

Synthetic mesh is convenient to attach to quick-drying solutions

What types of meshes are there for plaster – you can’t make a mistake when choosing

High requirements for the quality of repairs, new technologies in the preparation and finishing of surfaces, a variety of solutions based on cement, lime, gypsum with the addition of additives forced a response construction market and new auxiliary materials. Used for different purposes different types plaster mesh.

Metal

Traditionally, plaster metal meshes are used as a reinforcing layer: welded, woven, made by expanded metal.

Steel mesh for plastering walls, available with cells different sizes. It consists of metal rods of different thicknesses, welded together at intersections. A very durable product, with high physical and mechanical characteristics, but it is only suitable for interior decoration in rooms with a dry microclimate, since under the influence of humidity, corrosion can form on the mesh, which will lead to the destruction of the plaster layer.

Welded grating is an indispensable solution for thick layers of finishing

Galvanized mesh for plastering walls is the most popular option for external facades and basement work, is not afraid of corrosive deposits. Cells from small to large, welded in knots.

Reinforcing mesh for plastering walls - chain-link, universal for a thick leveling layer, suitable for all types of mortars. Thanks to the movable wicker system of nodes, it can be used not only for finishing surfaces made of brick, concrete, stone, but also for aerated concrete and wooden walls, where the material constantly works under the influence of climatic conditions. In addition, the chain-link is relevant in new buildings, where shrinkage of the walls is inevitable.

Chainlink – traditional way reinforcement for plaster

Expanded metal mesh for plastering walls is made in a special way. Holes are cut out of a whole sheet of metal under a press, then the sheet is stretched to produce diamond-shaped cells. The absence of welded joints gives the product strength; expanded metal mesh is used for plastering internal walls, for a thin layer of up to 30 mm.

New technologies

Along with metal products For the manufacture of the reinforcing frame of the leveling plaster layer, meshes made of modern, synthetic materials are widely used.

For walls made of aerated concrete and brick in the best possible way suitable plastic masonry mesh for plaster, plastic with a small mesh, for finishing facades and plinths with a larger mesh. It tolerates large temperature deltas well, -40 o -+100 o C, and is suitable for use on a heat-insulating layer.

Fiberglass mesh for plastering external walls and interior decoration is made of glass without alkali impurities; an additional component is aluminum, which increases mechanical strength canvases many times. It is not afraid of chemical and biological influences, does not rot, and is considered a universal material for all types plastering works. Fiberglass mesh for facade plaster is made of extra-strong fiber, can withstand thick layers of mortar, and can be used as insulation.

Mesh for plastering walls, photo of a thin fiberglass sheet, suitable not only for rough finishing, but also as a base for decorative plaster

Polyurethane mesh for plastering facades and rooms is available with cells of different sizes, is suitable for all types of mixtures, and can be used to reinforce thin and thick plaster layers. The material is lightweight, inert to various kinds influence, best solution for large areas, including industrial buildings, warehouses, private houses.

Biaxially oriented polymer networks are a new word in finishing materials. Lightweight, not subject to corrosive changes, not afraid of alkali, not an obstacle to magnetic field, elastic, can be easily transformed to fit any base, so it is convenient for finishing curved and rounded structures. Polymer mesh for plaster is an indispensable solution for finishing conductive communications, facades and interior work. Heavy duty polypropylene façade mesh for plaster withstands thick layers of heavy cement compositions, the use of the product in the reinforcement of bridges and roads only confirms the strength of the material.

Mesh for plastering walls, photo of a polymer product

Secrets of the masters

The variety of types of reinforcing mesh for plaster sometimes confuses home craftsmen who carry out finishing work with their own hands. There are several simple rules, which will help you figure out which grid and under what conditions is better to choose:

• For a layer thickness of up to 30 mm, it is recommended to give preference to fiberglass fabric punching sheet, which sits on a quick-drying solution and stabilizes the surface.
• Metal gratings are recommended for layer thicknesses of 30 mm and higher. Galvanized products are relevant for outdoor work, as well as in bathtubs and swimming pools.
• Plastic grille suitable for plaster finish, and the canvas with mini-cells is for finishing putty.
• For sealing seams and cracks - serpyanka, self-adhesive tape, it reliably protects the weak area, giving it strength.
• When reinforcing slopes under a thick layer of mortar, a metal grid should be used; for a thin layer, fiberglass should be used; even if the thickness of the plaster does not exceed 5 mm, slopes with a width of 150 mm or more must be reinforced.
• To finish the stoves, they use chain-link for a cement-clay layer and fiberglass for thin plaster.

A convenient way to fasten and reinforce corners

Plastering walls on a grid- one of the ways to effectively decorate walls. What is the essence of this method, what happens mesh for plaster and what are the main advantages of this method of plastering? Let's try to figure it out further in our article.

Types of mesh for plaster

Plaster can be applied to the most various surfaces, which must be prepared in advance. However, some such surfaces have low adhesion to plaster components (these are mostly concrete and wooden facades).

In this case, the plaster lays down in an uneven layer and peeling and crumbling are often observed; the plaster on such surfaces often crumbles and peels off, and this process can occur either immediately after applying the solution or after a short time. This requires additional costs or a complete redo of plastering work on walls or facades.

To prevent such a disaster from happening, given time widely used in construction reinforcing mesh for plaster. Plaster mesh comes in four varieties, which are determined by the materials from which the structure is made.

- woven mesh for plaster is a thin and fairly flexible structure, which is made of very strong and thin wire with different cross-sections. Woven mesh is sold in construction stores in convenient and large rolls and can be used for self-plastering walls and facades. Moreover, such a mesh must have a zinc coating, and the cell size must be 1*1cm.

- chain-link mesh or wicker presented in a design with a cell diameter of 2 cm, used to strengthen plaster on a wall or facade. This mesh is used to process large areas of walls or facades.

- welded mesh It has square symmetrical cells and is manufactured by connecting the butt joints of the wire using the welding method. In other words, the wires are placed on top of each other perpendicularly at a right angle and then the joints are welded to each other, forming a strong mesh structure.

In the manufacture of this kind of mesh, wire treated with galvanization or a special protective composition polymer based. Welded mesh is used to strengthen plaster on walls with strong settlement (that is, such a mesh can be used when finishing new buildings or buildings located on highly moving soils with plaster).

- expanded metal mesh for plaster . The method of manufacturing this type of mesh for plastering walls is quite complicated. For this mesh, a sheet of metal is taken as a basis, from which approximately identical holes are cut out on a specialized machine.

After this, the sheet goes through a stretching process and turns into a mesh. Ready material It has cells in the form of diamonds, which are located relative to each other in a checkerboard pattern. This type of mesh is used only when a small consumption of plaster mortar per 1 sq.m. is expected. also sold in rolls of various lengths, with a width of 1 m.

If the layer of plaster is planned to be made as thin as possible, then in this case Plastering walls on a mesh is done by using a mesh structure made of polymers or fiberglass.

Plastering the facade using reinforcing mesh

Metal mesh for plaster is used only when the thickness of the plaster layer is 3 cm or more. Chain-link mesh is used in cases where plaster is applied to a completely clean wall, without any decorative finishing elements.

Before plastering, the mesh must be unrolled from the roll, then measure the height of the wall that is to be plastered (such measurements must be taken from the roof to the ground). After this, it is necessary to cut the unfolded mesh fabric into separate pieces using special scissors for metal. The wall must be primed before applying plaster.

When the mesh pieces are prepared, you need to attach them to the wall surface using construction nails or screws. The mesh sheets at the joints should overlap by 10 cm. After securing the mesh, it is necessary to prepare.

To prevent it from becoming moldy later, you need to add an antiseptic to this solution during preparation. However, in most cases, plaster contains such antiseptic agents.

The very first layer of plaster is applied to the wall surface using a special spatula in the form of a spatula, and then this entire mass is leveled over the entire surface of the wall special rule. After this, the mixture should dry out a little and then you can begin applying the second layer of plaster. The second layer of plaster should be slightly thinner than the first and therefore it can already be leveled with a regular construction spatula.

Plaster on mesh provides for complete concealment of the mesh, therefore, if the first two layers of plaster mortar did not hide the mesh, then it makes sense to also apply a third layer of plaster. Sometimes it happens that the plaster lies unevenly on the surface of the wall.

Then you need to let the solution dry, and then smooth out the unevenness with construction putty and then clean the walls sandpaper. After this, the plaster can be painted or covered with a suitable building material.

Polymer mesh for plaster

Plaster on mesh can also be carried out using polymer structures. The polymer mesh for plaster has several important advantages– it allows you to save beautiful coating plastering for a long time. This happens because the polymer network is not susceptible to oxidative stress at all. chemical reactions, therefore it does not form unsightly rusty spots on the wall during its operation.

There are different ways to attach the polymer stack to the wall before applying plaster. To do this, you can use construction nails, or you can also apply a thin layer of plaster to the wall and then simply press the stack into it. After this, apply the next layer.

You can also attach the mesh using a stapler; this is possible when the wall is made of wood or porous building materials. Plaster on mesh from polymer materials be done in the following way. It is necessary to start plastering on a polymer mesh from the middle of the mesh fabric.

You need to move towards the edges of such a grid. It is also worth considering that the polymer mesh is quite elastic and therefore tends to stretch under strong mechanical stress. For this reason, this design must be handled very carefully to avoid the appearance of bubbles in the reinforcing material.