Facade reinforcing mesh. Methods for attaching a plaster mesh to a wall How to attach a mesh for plastering a wall

Plaster is rightfully one of the most the best ways leveling vertical surfaces. When properly produced, this finish retains its quality for many years. However, only if all its components are held firmly and securely on the wall. And such a product as plaster mesh allows you to ensure such reliability.

The main property of this mesh is wall reinforcement. You can attach such an element to a brick or concrete surface. Its presence allows the layer of material to be distributed more evenly and securely fixed on the wall surface, without falling off even under strong external influences. In this case, the mesh is especially important when a thick layer of material should be placed on the wall, as is often done to level the surface and hide flaws in concrete.

Types of plaster mesh

Today there are several types of this element on the market, divided according to their façade methods, manufacturing materials, and cell parameters. Some of them are used for outdoor work, and some are used indoors. Here are the main types:

Masonry mesh. It is applied for brickwork and has cells with a diameter of 5 millimeters. It is made on the basis of polymer substances;
Stelox mesh. Versatile due to its chemical resistance and physical strength due to fiberglass. The cell diameter is 5 millimeters;
Station wagon. The manufacturing material is polyurethane, the cell sizes can be 6x6, 13x15 or 22x35 millimeters;
Armaflex. It is made of polypropylene, but differs from the usual mesh by reinforced nodes. Able to withstand large layers of plaster. Actually, it is precisely in these works that it is used. The cell dimensions are 12x15 millimeters;
Plurima. Material used for both exterior and interior work. It is made on the basis of polypropylene and has small cell sizes - 5x6 millimeters. Can be used for both indoor and outdoor finishing works, is resistant to chemicals;
Syntoflex. Polypropylene mesh with cell sizes of 12x14 and 22x35 millimeters. Can be used for all types of work;
Metal mesh. Particularly durable, based on steel. Some models can be used exclusively for interior work, while others, galvanized, are universal. The cell sizes in such grids can be very different.

Rules for choosing plaster mesh

First of all, when purchasing this reinforcing material, you must clearly understand in what work you will use it, and whether it is needed at all. Based on this, they select specifications. But regardless of the direction of use, such a mesh must meet several criteria, for which certain tests can be carried out. General rules choice:

If the plaster layer is less than 20 millimeters, then the mesh may not be used at all;
If the thickness of the plaster exceeds 3 centimeters, then only a metal mesh will do;
With a thickness of 2-3 centimeters, ideal solution there will be a fiberglass mesh;
The plastic mesh is designed to work with gypsum plasters. In the case of using cement or other analogues, its use is not recommended;
When plastering the base, as well as leveling the wall for subsequent installation tiles, you can use a fiberglass mesh.

Important! If the height differences on the wall are more than 5 centimeters, then the ideal solution would be to abandon plaster and install the same gypsum boards or other panels on a pre-assembled frame. If we're talking about about the ceiling, then you can use suspended or tension options the last one.

Testing quality

If time permits, purchase a small piece of mesh and test it for alkali resistance. To do this, you need to place this network in alkaline solution for about 25 days, then try to break it off. If you notice a strong decrease in tensile strength, then it is better to look for other options. In addition, you can crumple the product into a ball, and then monitor whether it returns to its original shape. If yes, the mesh is of high quality.

Important! The above tests can be avoided if you buy the mesh for plaster in trusted places, where you can have no doubt about the quality of the product being sold.

Installation of fiberglass plaster mesh

In order to properly fasten fiberglass mesh to concrete or other surface, you need to start from the top, securing the material with self-tapping screws to the upper cells. Moving down, we will fasten around the perimeter, which should be enough. When applying plaster, the mesh itself will adhere well to the surface.

When laying two nets nearby, it is necessary to make a slight overlap. Remember that you need to measure the material so that its pieces are as large as possible. A solid mesh reinforces better than one divided into fragments.

Important! Try to position the mesh in such a way that after applying a layer of plaster, the material is recessed into its surface at a distance of about half a centimeter. This will ensure the highest quality reinforcement.

How to properly attach metal mesh

The latter must take on much more pressure, so its fastenings must be made as reliable as possible. The process itself is divided into several stages:
Installation starts from the top. The pre-degreased mesh is attached to the top row of cells using self-tapping screws along the entire length of the wall. In this case, mounting tape or washers are placed under the caps of the fastening elements so that the mesh does not fly out later;
In the case of concrete or brick walls Holes are pre-drilled into which plastic dowels are inserted. The holes themselves must be drilled in a checkerboard pattern with a spacing of about half a meter;
The mesh sheets must be installed with an overlap, the thickness of which is approximately 8-10 centimeters. You must try to position the fasteners in such a way that they pull the mesh very tightly, like a string. Otherwise, under the weight of the applied plaster, sagging will begin to appear, which in turn will lead to the formation of voids and a decrease in the quality of the finish;
On installed mesh plaster beacons are installed.

Important! Before attaching the mesh to the wall surface, the latter must be completely cleaned of dust and dirt.

Plaster on mesh – effective method rough wall finishing. A particular advantage of this method is that it allows you to apply a thick layer of mortar, which during the finishing process will not slide or peel off under its own weight. What is the procedure itself, what types of mesh should be used in certain cases, and how to attach them? More on this later.

Types of grids

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

fiberglass;
metal.

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

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

In turn, metal mesh also comes in several types:

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

How to attach metal mesh?

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

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

Installation of fiberglass sheeting

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

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

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

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

Preparing the wall for plaster and installing beacons

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

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

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

Installation is as follows:

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

Plastering the surface

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

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

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

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

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

Mounting mesh for plaster is used to securely fix a thickened layer of finishing mixture on the surface of walls and ceilings. Using the mesh, base defects are eliminated and possible mistakes when plastering premises.

The mounting mesh evenly distributes the load from the plaster layer over the entire surface of the base, thereby preventing the appearance of cracks in finishing material.

The use of reinforcing mesh extends the service life of the plaster coating.

Options for plastering walls

The size of the mesh depends on the thickness of the plaster

The historical tradition of plastering walls to insulate a home and add internal aesthetics to the room continues in our time. Previously, wooden shingles were used to reinforce plaster, which was nailed to the wall in the form of a lattice.

Later, steel mesh began to be used, and now synthetic mounting products are used to reinforce the finishing mixture, which have simplified the plastering process and brought the quality of rough surface finishing to another level.

Depending on the thickness of the finishing mixture layer and the purpose of the object’s surface, a range of mounting products made of metal and synthetic materials is produced.

Due to their anti-corrosion properties, synthetic products for reinforcing plaster have increased the service life of the coating and the quality of the finish.

Types and purpose of plaster mesh

Steel mesh used for outdoor work

The industry produces mounting fittings used for internal and exterior finishing walls of the building. Reinforcing sheets are used when the plaster thickness is more than 2 cm.

When exposed to external atmospheric loads and surfaces large area steel products are used, and for internal surfaces in the finishing material the reinforcing layer is usually metal and synthetic.

Metal mounting grids

Metal reinforcement in finishing plaster is used when applying a thicker layer of finishing mixture and when external cladding facades and basements of buildings:

Synthetic mounting mesh

Universal mesh can be used for both external and internal work

Synthetic reinforcing products are used to reinforce plaster used for finishing interior surfaces of premises and applying a thin layer of finishing mixture.

The installation of fiberglass mounting mesh on the interior walls of the premises to reinforce the finishing mixture made it possible to increase the service life of the plaster.

Characteristics of reinforcing mounting mesh

Name	Tensile strength (kgf/mm2)	Thermal conductivity (W/m2)	Weight (kg/m2)	Corrosion
Polypropylene	200 - 300	0.46	0.27	Not possible
Fiberglass	140 - 300	0.42 -0.46	0.32 - 0.36	Not possible
Steel A 600 - 1000	90 - 125	40 - 60	1.9 - 2.9	probably
Galvanized low carbon	35 - 50	56	1.112 - 2.288	Not possible

Due to their low thermal conductivity, tensile strength and lack of corrosion, synthetic mounting mesh has replaced metal products in plastering interior walls premises.

Selecting a mounting grid

When choosing mounting grids for finishing work, you should be guided by certain rules, which reflect:

object for applying finishing material;
operating conditions of the plastered surface;
layer thickness and type of finishing mixture;
characteristics of mounting grids and recommendations for use.

The mesh helps to strengthen the adhesion of the plaster layer in the presence of base defects

The need for using reinforcement products depends on the quality of the wall. Smooth surface the base will not require a layer of plaster of more than 2 cm, in this case there is no need to reinforce the finishing mixture.

The adhesion of a layer of plaster is enough to stay on the wall, but if the wall or ceiling has flaws and the defects can be eliminated with a layer of plaster more than 2 cm thick, then the use of a mounting mesh is mandatory.

In case of more serious deviations in surface quality, when it is necessary to increase the thickness of the finishing layer by more than 5 cm, we use a different type of finishing. Suspended ceiling and the walls can be lined with plasterboard.

The use of mounting reinforcing mesh is advisable when the plaster layer is from 2 to 5 cm; both types of mesh are used for reinforcement: metal and synthetic.

Installation of metal fittings

To get a high-quality plastered wall surface before applying plaster, it is important to do everything correctly preparatory work, including installation of plaster mesh to the wall and installation of beacons. See this video for tips:

We carry out the work in the following sequence:

Installation of synthetic reinforcement products

Fastening synthetic products to the wall easier to install metal. When the thickness of the plaster layer is from 2 to 3 cm, it is advisable to use fiberglass plaster mesh.

To install a fiberglass product, the wall surface is prepared, the base is cleaned of dirt and grease stains and a layer of primer is applied to it;
fiberglass cloth is cut into strips of size equal to the width or length of the wall, depending on the technology for installing the reinforcing product;
at vertical mounting strips of fiberglass cloth are secured with dowels in the upper part of the wall and a layer of plaster is applied, which is rubbed with a spatula through the meshes to the wall. With an overlap of at least 100 mm, the next one is mounted onto the attached sheet, onto which plaster is also applied. Consistently, the entire wall is covered with a mounting mesh covered with a layer of finishing mixture;
The installation of a strip of reinforcing layer along the wall is carried out similarly to the vertical one, only the layer-by-layer extension of the fiberglass sheet is carried out from below, up the wall. This fastening of the reinforcing fabric binds the plaster into a solid coating;
We install beacons on the dried first layer of finishing, controlling their verticality using laser level. After installing the beacons, apply finishing layer plaster, completely covering the mounting grid. For more information about installing the mesh, watch this video:

Reinforcement of the finishing layer of plaster allows you to eliminate the appearance of cracks on the wall covering and evenly distribute the load from the weight of the plaster over the entire plane of the base.

Plaster mesh is universal material. This product is used in a wide variety of areas of construction and repair. Efficiency individual types plaster mesh is determined by the materials of its manufacture and design features.

Purpose

First of all, plaster mesh is used for exterior work. After all, it is the outer facing layer that is susceptible to the most significant influences of environmental factors.

The use of the material helps create a textured relief, which serves as the basis for the durable installation of the leveling plaster layer. The presence of a cellular structure makes it possible to effectively bind solution particles. Thanks to this, the formation of a durable monolithic surface becomes possible.

The plaster mesh allows high-quality plastering of walls even for those craftsmen who are doing this kind of work for the first time. At the same time, the highest rates of setting of the mortar are achieved as a result of reliable laying of the cladding on textured surface grids

Areas of use

Currently, plaster mesh is actively used:

as a reinforced layer when performing facing work;
when installing underfloor heating systems;
for strengthening reinforced concrete structures;
if necessary, create protection for mechanisms and machines;
during the construction of enclosures and fences.

Material selection

The main criterion when selecting a plaster mesh is required thickness facing layer. Based on this, you should choose one of these options:

In cases where the plaster layer is up to 20 mm thick, it is quite possible to reliably veneer surfaces without using a plaster mesh.
If the facing layer in the form of plaster is about 20-30 mm, in this case it is advisable to fasten the plaster stack from fiberglass. The main purpose of such products is to create a protective layer that protects surfaces from cracking.
Laying plaster in a layer of more than 30 mm necessarily requires the use of a metal plaster mesh. This solution protects the facing layer from peeling.
If available, maximum uneven surfaces with recesses where the differences in the facing layer are more than 50 mm, it is recommended to completely abandon plastering.

Installation of metal reinforcing mesh

Metal plaster stack is the most common option when it is necessary to create the most reliable reinforcing surface. To lay such a mesh you will need construction dowels, self-tapping screws and specialized galvanized mounting tape.

Before the plaster mesh for interior work is laid on the surface, preparation of the latter is required. The material is cut from rolls according to the right sizes. Next, the mesh is degreased with acetone or solvent.

It is recommended to attach the plaster mesh starting from the ceiling. The upper side of the canvas is secured with self-tapping screws along its entire length. A piece of galvanized mounting tape is first placed under each self-tapping screw head. A worthy alternative Wide washers can serve as tape. However, such a solution cannot be called beneficial in terms of cost savings.

Holes are drilled in the wall surface where plastic dowels are installed. Such fasteners are installed in a checkerboard pattern over the entire area under the reinforcement with a distance of about 40-50 cm. At the joints, the plaster mesh for interior work should overlap the next canvas with an overlap of approximately 8-10 cm.

Laying fiberglass reinforcing mesh

The process of installing fiberglass plaster mesh is much easier compared to attaching a metal reinforcing base. To securely fasten the fiberglass plaster mesh to the desired surface, it is enough to use self-tapping screws. Using such fasteners, the upper edge of the mesh is first processed, and then the entire perimeter of the reinforcing material.

Typically, when installing fiberglass plaster mesh, no additional fixation is required. When laying the plaster layer, the reinforcing material is fixed by the thickness of the cladding.

It is worth noting that it is most convenient to unwind rolls of material and secure the sheets parallel to the floor plane along the wall. It is better to start installing fiberglass plaster mesh with one of upper corners. As with styling metal mesh, it is necessary to create a slight overlap of individual canvases.

As practice shows, the highest strength of the reinforcing coating is achieved when laying the mesh in solid sheets along the entire length of the treated surface. Therefore, when cutting material, you must try to create a minimum number of small individual pieces.