Mesh for plastering interior walls: varieties and methods of application. What kind of mesh is there for plastering walls? Steel mesh for facade plaster

Hello dear friends! Today we will look at a very important component of facade finishing - a mesh for plastering walls. When insulating a house thermal insulation material with subsequent plastering one cannot do without the reinforcement process.

For this, a special material is used - reinforcing mesh for plastering walls.

What is its purpose, is it possible to do without a construction mesh for plaster when performing the “ wet facade“What types are offered today in the building materials markets and how to make a choice? We'll tell you below.

Properties:

moisture resistance, resistance to temperature changes;
low elongation and deformation rates;
high tensile strength;
short specific gravity, does not weigh down the structure;
resistance to aggressive environments.

All these properties help to significantly improve the quality of thermal insulation, as well as significantly extend the service life of the thermal insulation and decorative layer. But all this cannot be done without first reinforcing the wall.

Fiberglass mesh - made of fiberglass, it is often used as a reinforcing mesh for plastering walls. Depending on the purpose they are classified into:

conventional, used for the base layer of plaster;
reinforced, used for reinforcing special structures, for example, when insulating the foundation, ground floors etc.;
architectural, used for special architectural elements.

Metal mesh for plaster or galvanized mesh - this mesh has a long service life and can be used in finishing any facades. For example, metal mesh for plaster can be used when finishing a façade with tiles (they are heavy and require a strong reinforcing layer) or a plinth when finishing with stone.

And also when choosing a facade mesh for plaster, be sure to take into account its density. Since strength and other important physical characteristics depend on its density:

up to 90g/m2 – for interior decoration and painting works;

from 90 to 220 g/m2 - to strengthen the plaster of facades, we recommend using this mesh in thermal insulation work;

more than 220g/m2 – to strengthen building elements subject to maximum load or located in the ground.

What does the color say?

Today in construction stores you can find fiberglass mesh for reinforcement different colors. There are five basic colors: white, blue, green, orange, yellow.

Why do they come in different colors? Manufacturers do this so that meshes of different densities and with different cell sizes are visually different from each other, and the buyer can easily determine which mesh for plaster he needs and which mesh to choose.

For example, one famous manufacturer orange fiberglass mesh has a density of 150 g/m2 and a cell size of 5x5 mm, white - 45 g/m2 and 2x2 mm, respectively. Today, when choosing, I would not focus only on the color of this product. Below we will describe the stages of selection; after reading this, you will be more prepared and will easily cope with the task of selection.

Choosing a façade mesh

When choosing a material for reinforcement when installing thermal insulation, you should pay attention to the following indicators:

Density, it should be from 145 to 160 g/m2, optimal size 5x5 mm.
Weaving quality and strength. To do this, just take a small piece and crumple it up. A good mesh should not tear, deform and quickly return to its original shape.
Resistance to aggressive environments. The material must be treated with special alkali-resistant compounds.
Price. Cost of reinforcing material according to general rule should not exceed more than 5% of the total cost of insulation.
Safety. Do not hesitate to ask the seller for a hygiene certificate.

Fiberglass mesh for facades is available in rolls of various lengths (usually 20 meters or 50 meters). The roll must be smooth and dense, and it must have a label indicating the manufacturer and characteristics of the material.

How to choose the right mesh?

U experienced builders There are rules for choosing a grid, and we will tell you about them. It is imperative to check it for tensile strength. Take a piece of mesh in your hand and squeeze it; if it is of high quality, then it should return to its original shape - straighten.

First, you need to decide why you need it, what you will do: plaster, lay tiles, what is the thickness of the planned plaster, etc. Let's look at the choice using an example:

If the layer of our plaster (finish) does not exceed 5 mm, then it is recommended to use fiberglass mesh for reinforcement. I almost forgot to say reinforced mesh for plaster it evens out the wall we are working on a little more. It is clear that it cannot even out large differences, but it smooths out very well.
Now let's consider the case when the plaster layer is more than 5 mm, then it is necessary to use a galvanized metal mesh, it will make the layer very strong. But be careful, we are talking about galvanized mesh, not steel mesh. Under no circumstances should steel be used for finishing facades, as it oxidizes (rusts) and can ruin everything for you.
If you are already finishing the finishing and you have a final, thin layer left, then you can use a canvas with very small cells.
If work is being done on a plasterboard surface, then a plastic grid will do.

Conclusion

Since the main purpose of the plaster mesh is to create a powerful reinforcing base for further fixation of the entire mass of plaster or another option on it exterior finishing façade of the building, its choice must be taken seriously.

Can you imagine what will happen if you skimp on it and as a result everything cracks? decorative plaster, which is significantly more expensive than even the most expensive façade mesh. Or, decorative tiles will start to fall off, which is also not cheap. There is only one conclusion - there is no need to save on facade mesh.

In building construction and production various types For finishing work, the use of metal mesh is becoming increasingly widespread. In order not to make a mistake with the choice of 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 by using decorative compositions- 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 their scope of 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 production building materials This type uses wire or metal rods. 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 leveling a large surface area requires applying a thick layer of plaster, then 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. You should not perform reinforcement 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 finished coating - it will be more even, since during work it is used whole piece fabric, characterized by the absence of seams and overlays.

For artificial stone it is necessary to select small coating sizes.

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. 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. Most often, welded mesh is used for the following types of work:

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 significantly. The weight of the mesh is small compared to other types.

Special attention should pay attention 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 a 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

In 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 most often plates up to 1.5 mm are 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. If 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 aggressive environment compositions for plastering. 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 for reinforcement concrete screed.

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 of the warranty service life of the plaster.

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.

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 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 meshes also depend on the material of the walls - to concrete and brick, although they have good adhesion, meshes are fastened with dowels, using large washers, to wooden walls - sometimes with nails, but it is better to fasten them with self-tapping screws. If you need to plaster a 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 - required condition. 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 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 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 a variety of 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 of large areas - warehouses, hangars, facades of public and industrial buildings, etc. mesh 20*20mm, 30*30 mm, 35*35 mm, mesh is produced in rolls.

Fiberglass plaster mesh

In terms of strength it has best characteristics than plastic meshes, withstands significant breaking forces. Another advantage that many types of plastics do not have is that glass fiber is absolutely chemically inert, and temperature Range its applications are 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 meshes, for extreme working conditions 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 long-term protection. Unprotected fiberglass cement mortar capable of dissolving and “eating” over a period of approximately several months to several years.

Fiberglass mesh is produced both in rolls and in strips of 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 mesh is 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 proven to be excellent and are 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 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, an elastic Chainlink with high relief is indispensable. 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. They are used not only for masonry, concrete screeds and foundations, but also for strengthening structures with a thick layer of thermal insulation and for finishing surfaces under load.

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

They are produced both wicker and from solid metal sheets with a thickness of 0.5 -1.0 mm by drawing and perforating the sheet. Widely used, including under plaster, along with welded mesh and a mesh netting. They perform the tasks of holding and adhesion of finishing layers, strengthening them and significantly increasing the resistance to cracking during shrinkage of buildings.

Anyone who has worked on wall finishing knows that when applying a thick layer of plaster, the material may not be able to withstand its own weight and begin to peel off from the wall surface. To prevent this from happening, a reinforcing mesh is used. It is mounted on the wall and takes on part of the load.

In what cases is a mesh needed?

If the walls are plastered without a mesh, there is a possibility of the material peeling off under the influence of its own weight. Thanks to the reinforcing mesh, it is created monolithic slab, which can withstand any load. For plaster of various thicknesses are created different grids designed for a specific load.

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

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

Types of grids

On the building materials market you can find many types of meshes onto which plaster is applied. In order not to make a mistake when choosing, it is worth considering the main types of such products and their features:

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

How to attach the plaster mesh

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

To keep the mesh more securely, you should roll it out across its entire width in one piece, without dividing the product into several. Vertical beacons are installed at a distance of about two meters from each other during installation. After the mesh is hung on the screws, the thrown plaster seals it to the wall, so additional elements no fastenings needed.

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

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

Surface preparation

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

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

Applying plaster

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

First layer. Plaster is usually applied in two or three layers, depending on the material of the walls. Concrete, for example, requires three coats. The first of them is called “spray”. The plaster at this stage has a creamy consistency and is thrown onto the wall surface in any order. The composition can be spread, but throwing it on allows you to speed up the process. After applying plaster to a certain area of the wall, you need to wash the tool. After casting, the composition is leveled with a two-handed spatula from bottom to top.

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

Third layer. At this stage, you need to level the composition more carefully so that no errors remain on the surface of the walls. Before applying the finishing layer, you need to wet the surface of the plaster.

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

The final stage of work

After the plaster has completely dried, it must be prepared for fixing finishing materials. To paint and wallpaper, just sand the surface using sandpaper. If there are noticeable unevenness on the wall, you need to start using the largest brand of paper. For ease of work, a piece of product is clamped on a grater. Grinding is done in a circular motion with little effort so as not to create new defects on the surface.

When the wall becomes uniform, you need to change the brand and continue grouting. If the surface will be painted, you need to take P120 paper. During the entire process, you should use goggles and a respirator to protect yourself from dust.

Since it is quite difficult to sand the surface in the corners, it is worth working either without a grater or using bars with sharp corners. If you want to make the work process easier and faster, you can purchase an electric grater. But to treat the walls of one apartment, it is not profitable to buy such a product. After sanding, you need to sweep away the dust with a brush.

Applying plaster under wallpaper and painting

Before starting work, you should determine exactly how the room will look and what will be used as finishing materials. If you choose wallpaper, you need to determine its type and thickness in advance. If they are thin, you need to apply several layers of leveling plaster. This will allow you to hang the wallpaper without any unevenness or bubbles.

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

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

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

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

Peculiarities

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

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

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

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

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

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

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

What is it for?

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

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

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

The use of plaster reinforcing mesh is advisable when:

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

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

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

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

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

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

Types and characteristics

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

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

The most popular materials include:

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

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

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

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

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

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

Polypropylene syntoflex acts as a universal finishing material; it can have cell sizes of 12x14 or 22x35.

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

Which one should I use?

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

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

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

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

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

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

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

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

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

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

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

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

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

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

Installation

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

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

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

The next step is to drill holes for the dowels. The distance between the holes should be about 40-50 centimeters.

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

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

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

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