Metal plaster mesh: the pros and cons of using. Facade reinforcing mesh

A wall plastering mesh is a metal or polymer product used to reinforce the surface created by means of a plaster solution. In most cases, it is not required, but for external work or rough leveling of very littered walls, a reinforced mesh for plaster is simply necessary.

First of all, you need to decide on. If it is less than 2 cm, then the reinforcement can be abandoned, since the solution can stick to the wall on its own. For a layer thickness of 2-3 cm, light products based on fiberglass or polymers are required. They will significantly increase the life of the finished coating, as well as prevent its cracking. For a layer thickness of 3-5 cm, a metal mesh for plaster is recommended.

On a note! If, after carrying out all the measurements, it turned out that it was necessary to apply a layer thicker than 5 cm, then it is better to refuse plastering and use drywall for leveling.

According to the technology, the layer of plaster cannot be more than 5 cm, but some craftsmen make even 8 cm, while reinforcing each layer with a reinforcing cloth.

Regardless of the layer, a reinforcing mesh is necessary when finishing surfaces made of lightweight cellular concrete (gas and foam blocks).

Types of plaster meshes

The modern construction market offers the following types of plaster meshes:

Galvanized Plaster Mesh

The choice of mesh for plaster

Before answering the question: which mesh is better to use, you should pay attention to the layer of plaster that will be applied. Using a laser level or hand tools, they find out the blockage of the wall, add the thickness of the beacon and a little margin to this value. The result is the required layer thickness.

For small layers, light polymer or fiberglass products are used, for large ones - metal mesh for wall plastering or reinforced polypropylene materials. The larger the layer, the larger the cell should be. If for 2 cm a light mesh with a cell of 5 mm is enough, then for 5 cm a product with a nest size of 3-5 cm is better suited.

The thicker the layer of plaster, the larger the cells should be

Should know! If it is intended to use a cement mortar, then the material must be resistant to alkalis; for gypsum mortars, the mesh can be any.

Last but not least, you need to pay attention to the cost. It is not recommended to buy expensive heavy-duty products just in case, they will never pay for themselves.

The construction market offers a wide range of plaster meshes, but it is not always justified to purchase expensive products.

This material for wall plastering can be used with a layer thickness of 3 to 30 mm. The cell size should be from 5 mm or more, and the density of the product should range from 110 to 160 g/m2.

The first step is to cut the product into elements. The dimensions of the fragments depend on how many people work (it’s easier for two to apply most of it at once), how exactly the material is located (along and across). It is also important to leave 15 cm of margin for overlapping with other fragments. After preparing the elements, it is necessary to apply the first layer of the solution. A mesh is applied to it and recessed into the surface, after which subsequent plastering is carried out.

Installation of fiberglass material by embedding in solution

In some cases, craftsmen attach the product directly to the surface to be treated using screws or self-tapping screws, and then plastering is carried out along the grid. This method can only be used for decorative work and a layer thickness of not more than 1 cm. If the layer is thicker, the network will be too close to the wall itself, so the plaster will remain unreinforced.

Ideally, the application of reinforcing material under plaster walls should look like this:

Fragments of the required length are cut.
The first layer of finishing material is applied, it is leveled to the size of the grid.
A mesh is applied through the heads of the self-tapping screws, which were previously screwed in for the installation of beacon profiles.
Next, the next fragment of the wall is processed, and so on until the end. In this case, the canvas must be overlapped.
After that, beacons are mounted and plaster is applied to the product.

Installation of fiberglass mesh under plaster

On a note! The plaster should be evenly distributed over the entire area, while stretching the material should be from the center to the edges. When smoothing the edges of the mesh, it is necessary to hold them with a rule or a wide spatula.

Metal mesh installation

Plaster metal meshes are used when it is planned to apply a significant layer of material. Masters recommend choosing galvanized products with a cell of 10-12 mm. This material is easily cut with special scissors, weighs a little, and also does not rust.

When reinforcing walls with metal products, it is important to remember that they are pre-degreased, then washed with water and wiped.

Installation of metal reinforcing mesh under plaster

Installation instructions:

First of all, the product is cut with scissors for metal processing into fragments of the required size. It is important to take into account the fact that if there are rusts on the surface, then the grid is applied in a single fragment along each of them.
A 6 mm drill is installed in the puncher and holes are drilled all over the wall, retreating from the corners, floor and ceiling by 20 cm, while the pitch of the holes is 30 cm. Their depth is slightly larger than the size of the dowels.
Dowels are mounted in the holes, after which, together with a partner, they press the mesh to the surface and fix it with self-tapping screws. To increase the density of contact of the product with the wall, its edges are fixed with mounting foam. The next canvas should overlap with the installed one. If the material lags behind the surface, you will have to make several additional holes.
At the end, beacons are mounted on the wall and plastering is carried out.

Installation of beacons on the reinforcing fabric

If the plaster layer is more than 3 cm, then it is necessary to additionally reinforce the surface. Suppose the first layer of 2 cm with a mesh was applied, after it dries, another mesh is attached to the coating, after which a layer of plaster is applied again, and so on with each additional layer, except for the decorative one.

On a note! If an expanded metal mesh is used, then the layer of plaster depends on its thickness. With a rod thickness of 1 mm or less, 5 mm of plaster coating will be enough.

If a large layer of plaster is planned, then it will be rational to apply several layers and reinforce each one.

It is important to remember that the durability of the repair depends on the quality of the materials used. You should not buy cheap products of unknown origin, but buying expensive Western-made products is also not always justified. In this case, it is better to opt for the products of domestic enterprises.

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

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

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

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

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

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

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

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

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

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

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

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

Mesh attachment.

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

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

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

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

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

When is mesh used for plaster walls?

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

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

Installation work.

The installation process is divided into several steps.

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

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

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

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

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

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

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

Metal mesh.

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

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

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

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

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

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

We choose metal.

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

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

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

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

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

A question of price.

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

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

With my own hands.

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

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

Shingles for plaster.

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

The mesh is a rolled building material used to reinforce internal and external surfaces for various purposes. The maximum effect is observed in new houses that have not yet passed the shrinkage stage, but in a number of works it is indispensable. Cell sizes, diameter and base are different, in each case it is important to choose the right option.

Types and description
Scope of use
Mounting technology
average cost

Why is a grid needed?

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

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

Types of grids, features and applications

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

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

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

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

What grid to use and in what cases?

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

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

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

Do-it-yourself grid mounting nuances

The metal variety weighs the most and needs to be securely fixed with screws or nails. It is degreased (galvanized is simply washed with water or wiped with a rag) and cut with special scissors into pieces of the desired size, taking into account the obligatory entry into neighboring areas by 10 cm. In some cases, holes for dowels are prepared in advance, the step is 25-30 cm, on average m2 takes 16 fasteners. The edges, if possible, are fixed with a mounting tape (when working with coarse-mesh options, its use is mandatory).

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

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

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

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

Material cost

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

Different types of mesh

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

Scope of use

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

Strengthening the base

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

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

Types of plaster mesh

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

plastic;
fiberglass;
metal.

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

A more detailed classification is presented in the table below.

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

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

Choice of working material

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

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

Plaster with the following types of mixtures:

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

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

Reinforced brick surface

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

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

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

Features of mounting different types of mesh

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

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

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

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

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

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

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

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

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

Installation of a metal mesh

The stucco metal mesh is fixed in the following sequence:

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

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

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

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

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

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

With all the variety of building materials used in the construction of walls, the most popular type of finish is still plaster. Even if later it is planned to use other finishing materials, everyone tries to make at least rough plaster.

In the 90s, the concept of "European-quality repair" entered our lives. At the same time, everyone puts their own meaning into it. Someone implies high-quality finishing materials and expensive repairs, others believe that these are, first of all, perfectly flat surfaces made in accordance with European standards. For, apply a grid for plaster.

However, the standards of European countries do not require the mandatory use of a reinforcing mesh. It is recommended to use it only in difficult places.

The mesh allows you to reduce the appearance of cracks, but does not ensure the integrity of the finishing layer.

Benefits when using:

Applying mortar to the grid can be done quickly, which makes plastering work easy, even without experience.
If the mesh is securely fixed to the base, then you can be sure of the durability and strength of the finishing layer.
The plaster applied to the grid, in fact, will be a monolithic structure that will not be subject to shedding and cracking.
Plaster on the grid provides reliable adhesion to walls made of any materials.

What are they?

For different types of bases, different types of grids are used:

masonry

This mesh is made of polymers. The cells in the grid have dimensions of 5*5 mm. It is used in plastering.

It is used not only for plastering, but also for finishing work using. It is made from polyurethane. Several types are produced: cell size 6 * 6 mm - considered small, 13 * 15 mm - medium and 22 * 35 - large.

Manufactured from specially treated fiberglass. It is applied both to plaster, and to finishing works. Cell sizes 5*5 mm. This is the most resistant mesh to chemical attack. In addition, fiberglass perfectly tolerates elevated temperatures.

This type is made of polypropylene. Resistant to aggressive environments. Has a cell size of 5 * 6 mm. It can be applied at plaster of internal and external surfaces;

Armaflex

The mesh is made of polypropylene, but additionally has reinforced mesh corners. Cell sizes 12*15 mm. It is used for plastering surfaces with a thick layer.

It consists of steel rods soldered at the corners of the cells. There are a number of steel meshes with different mesh sizes.

Due to its susceptibility to corrosion, it is used only for interior work. As well as steel, they have different cell sizes.

galvanized

Unlike metal, it can be used for outdoor work.

Which one to choose?

In order to choose the right grid, you need to use the level to determine the differences in the base. This will allow you to approximately know how thick the plaster layer will be.

There are several grid solutions:

With an expected plaster layer of less than 20 mm, it is recommended to use a universal mesh. It will perfectly cope with the task of fixing the solution and prevent the appearance of cracks.
If the plaster layer is more than 3 mm, a metal mesh is required.
If the drops are more than 50 m, you should think about.

How to install?

Installation technology depends on the material from which it is made.

To fasten the metal mesh, you will need self-tapping screws, dowels, metal scissors and galvanized mounting tape.

All work must be carried out in accordance with the instructions:

Cut a piece of mesh to the size of the wall with scissors for metal and degrease it. To do this, you can use any solvent or acetone.
Using scissors for metal, we cut the galvanized mounting tape into small pieces.
It is necessary to install the grid from top to bottom, placing the canvas horizontally, starting from the ceiling itself. The upper edge of the first row is fastened with self-tapping screws. Considering that the metal mesh has large enough mesh sizes so that the mesh does not jump off the self-tapping screws, pieces of mounting tape are placed under their caps so that it presses one of the sides of the cell against the wall. There are widened nuts on sale that can also be used for this purpose, however, they are much more expensive than mounting tape.
If the mesh is mounted on a concrete or brick wall, then the fastening must be carried out using pre-installed dowels. To do this, you can use ordinary plastic parts, which are quite inexpensive.
Fastening must be done often enough in a checkerboard pattern so that the mesh fits snugly against the wall. The ideal distance between the dowels is 500 mm.
Mesh panels are fixed over the entire surface of the wall with an overlap of 80-100 mm.
Fixing fiberglass mesh.

Such a mesh does not need to be fixed over the entire surface: it is enough to securely attach it along the upper edge. It is also attached, starting from the ceiling. The dimensions of the cells of such a grid are small, and it itself has a small weight, which can only be used with self-tapping screws, without additional devices such as mounting tape or nuts.

It is important that a piece of mesh remains in the corners for a small overlap.

The greatest strength can be achieved if the mesh is applied to the wall with a whole panel. Therefore, the beacons must be set up already on a grid fixed to the wall.

Ceiling mesh reinforcement

Several materials can be used to reinforce ceilings.

As well as for walls, they use a mesh of fiberglass, metal, as well as shingles - a structure made of wooden slats:

Plastic or fiberglass mesh it is recommended to apply if the expected putty layer will be no more than 30 mm.
With height differences of more than 30 mm, it is better to use a metal mesh. It is much more expensive than plastic, but much stronger.
Drank has been used for many years. For its construction, a 20 * 8 mm rail is used, which is attached to each other in the form of rails. This is the simplest method of reinforcing the plaster layer, but is only suitable for wooden bases, simple construction.

Before attaching the grid, it is necessary to prepare a mounting tape, pre-cut with metal scissors into small pieces. The metal mesh must first be degreased with acetone or other solvents. In extreme cases, you can simply wash it with any soap detergent that can wash off oil or grease traces.

The grid needs to be cut according to the size of the ceiling. It is important to remember that one canvas should overlap the previous one by at least 12-15 cm.

Fastening:

The shingles are attached very simply: you just need to graft the structure with nails to the ceiling at the tops of the cells.
Fastening of a metal or plastic mesh can be done both on nails and on dowel-nails. They need to be placed in a checkerboard pattern at a distance of 200-300 mm from each other.
If you do not use a mounting grid, then you can use nails with large hats or use washers.

The use of plaster mesh when sealing joints in floor slabs

To perform these works, a strip is cut out from the grid along the width of the site with the addition of 5-10 cm on each side. It is fastened in the usual way and sealed with mortar.

In any case, the application of the mortar should be started from the middle of the room, moving evenly towards the walls.

Price

Metal mesh - 140 rubles per square meter.
Plastic - 30-40 rubles per square meter.
Fiberglass mesh - 50-60 rubles per square meter.

The use of reinforcing meshes allows you to make repairs more durable and of high quality. In the future, it will be enough to carry out only cosmetic repairs: replacing wallpaper, painting the ceiling.

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

Types of grids, features and applications

What grid to use and in what cases?

Do-it-yourself grid mounting nuances

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

Material cost

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

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

Varieties

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

There are the following varieties:

Rates

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

Approximate price:

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

Subtleties of choice

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

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

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

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

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

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

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

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

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

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

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

Plastering of wall surfaces on a grid

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

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

The technology of plastering wall surfaces includes several stages:

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

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

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

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

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

Fiberglass mesh installation method:

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

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

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

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

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

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

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

Video

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

Types of plaster meshes

The choice of mesh for plaster

Metal mesh installation

Mesh attachment.

When is mesh used for plaster walls?

Installation work.

The installation process is divided into several steps.

Metal mesh.

We choose metal.

A question of price.

With my own hands.

Shingles for plaster.

Types of grids, features and applications

Do-it-yourself grid mounting nuances

Scope of use

Types of plaster mesh

Choice of working material

Features of mounting different types of mesh

What are they?

masonry

Armaflex

galvanized

Which one to choose?

How to install?

Ceiling mesh reinforcement

The use of plaster mesh when sealing joints in floor slabs

Price

Types of grids, features and applications

Do-it-yourself grid mounting nuances

Varieties

Rates

Subtleties of choice

Plastering of wall surfaces on a grid

Video

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