Plastering a wall is a simple process, but sometimes there is a risk of the mixture dripping. It is in such a situation that one cannot do without reinforced mesh. Although the question often arises whether it is necessary. To make the finish high quality and reliable, this is the best solution.
The plaster on the mesh falls into the cells and no longer flows down. When such a coating hardens, it becomes reliable and durable. According to experts, this method is becoming more and more popular due to its effectiveness. But you need to pay attention to some points, one of which is the application layer. If it is up to 10 millimeters, then the use of reinforcement is not required. If this thickness increases, then you definitely can’t do without an addition.
Which mesh should I choose?
Today there are a lot of offers on the market, for this reason it is not always easy to choose the right one. To make a choice quickly, it is important to consider the characteristics. Based on them, each person makes a choice and decides what will be effective. If you have no experience, then it is better to consult with experts or study similar information.
To create reinforcing material, manufacturers use a variety of components:
- Fiberglass. Unique modern composition, which allows you to work with a small layer of plaster, making it as reliable as possible.
- Polymers. This is a plastic that is used in many industries today. It shows itself to be one of the most reliable, but at the same time it does not weigh down the entire structure and is inexpensive.
- Metal. This is a classic that has remained in demand on the market for many years. But at the same time, a metal mesh, the price of which is high (90 rubles per square meter), does not lose its leading position.
Depending on the construction process, a choice is made. You should not overpay, since each type will have its own price if this is not necessary. So before choosing, you need to understand what each of them represents.
Fiberglass
Today it is often used because it is easy to use. This is a canvas with small cells made of fiberglass. Plastering on a mesh of this type is most often performed inside any room. Although in some cases it happens that they are used externally.
Experts highlight one main advantage - there is no need to level the walls before starting work. Such a canvas is attached to any surface, and plastering begins. Most often it has a plaster finish. Since the work ultimately turns out to be simple, a person without experience can take on it.
Polymers
Today, plastic is everywhere, and it is not uncommon in interior decoration. Plastering on a polymer mesh is quick and convenient. The fact is that such protection is reliable and comparable to metal, but at a price several times lower. Cost is the main stumbling block today.
The main advantage is that the structure does not receive a large load, but the reliability is not reduced. In construction stores there is always such a mesh with different cells and thickness. When it is used, you can easily level walls with a large deflection, up to about 20 millimeters. Plastering on a mesh of this format is relatively easy process.
Metal
The most common option today is a metal mesh. Because when there are large differences and gaps on the surface, you simply cannot do without it. But most often plastering facades on a grid is found. And for efficiency, the mixture is made from cement. On sale, everyone will find several basic modifications:
- Application thin wire, is performed using a woven system. Such nets are effective both inside and outside any room. Basically, the cell dimensions of such a mesh are 10 x 10 mm. Plaster mesh 10 x 10 is easier to fix than any other, because it is not very rigid. But during operation it shows itself as one of the reliable elements in the decoration.
- Chain-link mesh is woven-reinforced. The price of metal mesh is up to 200 rubles per square meter. It is often used not only in finishing, but also in any other construction processes. Shows itself well over large areas. Its size of one cell in standard terms is slightly larger than the first (20 x 20 millimeters).
- There is another system for making mesh - welding individual rods of different thicknesses. The application is extensive - it is mainly used to prevent buildings or any structures from settling during operation. The cells can have different sizes (the most popular is a plaster mesh 10 x 10 mm). Everyone chooses the right one depending on the type of work.
- Expanded-extraction fittings. It is created using special technology, which gives it maximum strength. For this purpose, a special machine is used on which stretching occurs. metal sheet. In the process, cells of equal size are formed. As a result, the mesh for plaster of this sample withstands a thick layer of plaster, and also gives strength to the created structure.
These are the main types that are easy to find in the market. But before you start, you need to decide what you need. The use of metal allows you to increase the load-bearing capacity and make the finish durable. Therefore, this method is considered the most common and high-quality. Working with each grid involves its own stages and rules. The fastenings are specific, depending on the selected material.
Application of fiberglass
As already noted, such a mesh is lightweight and does not require a special type of fixation - a solution is quite suitable. To make it neat and even, it is lightly pressed with a spatula. For ease of work, the mesh is cut into strips, but when laying there is an overlap between them. If the area has an unusual surface, then any fasteners can be used for reliability. But they should not stick out after plastering. When finishing wooden structure the latches can be staples from a construction stapler.
Application of other types
Polymer compositions Most often they are attached in the same way as fiberglass because they are almost the same thickness. If this is not enough, then you can do it with self-tapping screws. It is also necessary to overlap where the strips join. The procedure is simple, but you should not skip some little things.
Metal mesh is used most often when you need to create a large layer of plaster. It is for this reason that it is important to securely secure the entire base. Only after this the Execution Technology begins:
An important feature is that you need to achieve maximum tension without sagging the material. If voids form in the plaster, this reduces its load-bearing capacity and the whole meaning is lost. The whole process of fixing the mesh is simple, but you can’t skip anything. Every person without experience in applying plaster can cope with this procedure in a short time. But before you start, you should stock up on everything you need.
How to place beacons?
You can't do without them. When the grid is selected and located on the working surface, it is worth installing beacons, so to speak, guides for the rule. Using them, it is possible to make the layer as even and monolithic as possible. To make a rule, you need to take a small piece of metal profile up to one and a half meters in size, so that it is convenient to move it. The beacons are fixed with gypsum or any solution in use. But the guides must be set strictly in level.
How does the finishing process take place?
According to the experts, if there is a mesh of any design, then plastering usually occurs in two layers, although many experts increase this application to three.
Everyone must make their own decision depending on the condition of the surface. But the order is always the same and should be followed:
- Applying the first layer will not be difficult, because you just need to throw on the plaster. This requires a trowel. The composition is taken onto it and applied to the wall with a sharp movement. To do this, the mixture should not be too thick. Thanks to this process, the layer is as durable as possible.
- As soon as the first one begins to dry out, you can begin to apply the second one. It should already be kneaded more tightly, like dough.
- All work is carried out from the bottom up. Then they begin to stretch the rule over the entire area, slightly shifting it from side to side. This allows you to make the entire surface more even.
- But the third layer is done as needed. You need to visually evaluate the surface - if something goes wrong, then you can make a third application, but thinner, just to even out the errors. The technology for performing plastering work is simple.
- When this is done, the beacons are removed, and the holes from them are covered with the same composition.
Finish
This completes the plastering. To ensure that the surface of the treated area is neat, it is worth finishing the grout. The composition is taken to be more liquid. Such manipulations will not be difficult for anyone.
Conclusion
So, we found out how to plaster walls using a grid. As you can see, materials may vary. But the technology of plastering on a mesh is approximately the same.
Mesh for plaster interior walls allows for higher quality finishing of premises. This technology prevents the solution from peeling off the surface, makes the coating harder and doubles its service life.
Mesh plaster – what is it and why is it needed?
Grid plaster is one of the ways to decorate walls. This method is needed to strengthen the facing layer on uneven surfaces. It is mainly used for external surfaces of civil buildings and industrial structures. This is especially true for new houses that are still settling. But sometimes premises are also treated in this way. In this case, it is necessary to distinguish between the types of reinforcing material for external and internal work.
The cellular material can be fiberglass, polymer or metal. It all depends on where it is used. To the grids under interior plaster have their own demands. Such material must be resistant to alkaline attack. For this reason, it is impregnated with a special solution. If this is not done, then over time cracks will appear on the cladding. This means that the base has decomposed and the plaster layer has lost its strength.
In addition to impregnation, the mesh for plastering internal walls must maintain strength and elasticity. According to SNiP, its density must correspond to the parameters 150-170 g/m2. This will give it the ability to withstand mechanical, wind and other loads experienced by the building as a whole. Typically, builders use metal mesh to protect the walls of the first floor when performing plastering work.
What type of mesh is used for plastering interior walls?
Plaster layer on concrete, brick and wooden facades cracks and peels off. To avoid this, the walls are reinforced with mesh. There are 4 types of metal mesh:
- Woven mesh is a flexible and incredibly durable material. Its structure consists of woven wire different sections. Ideal for DIY wall decoration. Has square cells 1x1 cm with zinc coating. Sold in rolls in construction stores.
- Chain-link or woven mesh is suitable for strengthening multi-layer plaster. Cell size 2 cm.
- Welded mesh with square cells is made by spot welding intersecting wires located perpendicular to each other. Low-carbon, polymer-coated or galvanized steel wire is used for production. Designed to prevent cracking of the finishing layer during the period of active settlement of the walls. To prevent cracks in the plaster, a mesh with 2/3 cm cells is used. It is sold in rolls 1 meter wide.
- Expanded metal mesh is produced by pressing from sheet metal. First, holes are cut, and then the sheet is stretched to obtain diamond-shaped cells arranged in a checkerboard pattern. Apply under a small layer of solution. Rolls can be of different lengths, but the standard width is 1 meter.
Under a very thin layer, a polymer mesh or fiberglass element is used, most often when needed or, as it is also called, “Venetian”. This type The material has increased resistance to various types of chemical influences and does not spoil the final coating with stains during use. Methods of attaching such meshes can be different. If the wall is concrete or brick, then you can apply a little mortar to it and press the reinforcing material into it. On wooden or porous surfaces, you can fix the net using a stapler.
Preparation and start of finishing work
Before you start decorating the walls, you need to prepare everything you need: tools, remove debris, think and decide which type of mesh is best to use.
Important: metal mesh is best suited for applying mortar with a thickness of 3 cm or more. Chain-linking is used when reinforcing walls that have not previously been plastered.
So, after you have everything prepared, you can begin to complete the five steps.
- Measure the height from floor to ceiling. Lay out the mesh and use metal scissors to cut the required number of panels.
- Straighten and attach the mesh to the primed surface with nails or screws. At the same time, do not forget that the canvases should overlap with a width of 10 cm.
- Prepare. Add an antiseptic to it so that there is no mold on the plaster in the future.
- Apply a preliminary layer of mortar with a trowel, then level it using the rule. Allow the fresh plaster to set, then apply a leveling layer. Because it is thinner, it should be spread directly with a grater. To do this, take a small amount of the mixture onto the working surface of the tool and, pressing it against the wall, pull it from the bottom up. If the mesh is visible, repeat the procedure.
- Let it dry, then cover the uneven areas with a spatula and rub these places with a trowel. After hardening, clean up any uneven surfaces using fine sandpaper or a sponge moistened with water.
When plastering using polymer types of mesh, you should apply the solution from the middle to the edges of the canvas, as if you were gluing wallpaper and expelling the air from under it. Networks from polymer materials elastic and stretchy. When working with them, you need to be careful and make sure that no bubbles appear on them. Now, depending on what the plaster was done for, you can either paint it or do decorative cladding.
Plaster facing
Wall painting has become the most widespread. Before you begin this type of cladding, you need to evaluate the quality of the surface: remove all cracks, make sure that the plaster layer is strong and does not lag behind the wall surface. After the putty has dried, it is necessary to treat the surface before painting with a water-based primer.
Be careful when choosing the paint you are going to use to paint the plaster.
Remember: fresh plaster, as a rule, has an excess of alkali, so it is highly undesirable to use compositions containing solvents. Please note that the plaster must be protected with a synthetic primer before using organic soluble paints.
It is best to use a roller to paint walls. The surface must be treated carefully, not leaving any gaps, and after the coating has dried, it should be painted over again. Acrylic, alkyd and latex compositions are best suited for painting facades.
No less popular finishing method interior spaces wallpaper. To prevent them from peeling off, you need to properly prepare the plastered surface. Remove all old wallpaper from the walls and make sure the plaster is holding up well. Then the cleaned surface should be washed with water and inspected for cracks. If you find them, they will need to be puttied and given time to dry. Then treat such areas with fine-grained sandpaper.
The choice of wallpaper glue depends on the type of wallpaper and the surface on which you are going to stick it. Usually there are instructions on the rolls with recommendations on which glue is best to use. In general, the technique for gluing plastered walls is not much different from the technique for other surfaces.
Without knowing how to do this or that type of repair, you can not only waste a lot of time and effort, but also ruin expensive materials. We hope that the tips given in this article will help you carry out repairs correctly and avoid many mistakes.
Currently, plaster is considered one of the most popular finishing materials for interior surfaces of ceilings and walls.
Technology has stepped far forward, and not so long ago, shingles for plaster were used to strengthen the surface of walls. Nowadays, construction reinforced painting mesh for plaster is widely used.
1 Application features and types
The mesh for plaster is used to securely attach this plaster to the wall; its thickness can be different. The presented wall finishing technology involves the use of those products that have a certificate of conformity.
As a rule, their typical size and aspect ratio is 10x10 mm. Such a mesh, having dimensions of 10x10 mm, can be mounted on the internal surfaces of walls quite simply and without any particular difficulties. Plastering mesh, which has an appropriate certificate of quality or conformity, is used to fasten or reinforce walls from the inside of a building.
In this case, the thickness of the internal walls is not critical, but The mesh for plaster performs its fastening function. In most cases, the mesh for plaster has dimensions of 10x10 mm. Before you start using it, you must make sure that you have an accompanying document such as a quality certificate.
The thickness of the product may vary within small acceptable limits. Such a product is used for plastering on the wall and must have a certificate.
This certificate confirms the product’s full compliance with all standards and requirements. It should indicate the thickness and dimensions(for example 10x10 mm). Such products can be made using polyurethane or metal, and should be attached to the wall after reading all the relevant instructions.
In this and similar cases, the thickness of the walls does not affect the quality and pace of work performed. Fastening a product with dimensions 10×10 is done using special adhesives, self-tapping screws, screws, as well as other devices, the use of which is permitted by the certificate.
The thickness of the products, in this case, must correspond technological conditions. For the most part, the mesh is sold in the form of rolls and can have different sizes, the most common among them is 10x10 mm.
When purchasing, be sure to pay attention to the quality certificate. Depending on the method of applying plaster to the surface of the walls, fastening metal or analogues can be carried out with an orientation towards different ways implementation.
Certificate metal products may differ from the same document related to plastic products.
That layer of plaster on the wall, which is called the bottom layer, is reinforced with the participation of the selected mesh product immediately on top of the already applied mortar. The applied solution should have the required thickness and press the mesh with a slight degree. The certificate reflects all these production points in their respective paragraphs.
The most acceptable option during which the last decorative layer will be applied will be the one during which the reinforcement will be attached to the wiped and dry surface using special devices.
The certificate allows the use of such technologies. In the case where the surface of the walls being treated does not have a large area, the plaster mortar itself can act as a fastener to the wall.
At the same time, it should be applied to the surface of the walls to be treated in a dotted manner - this will help securely fasten the mesh.
After completing this action, the entire thickness of the plaster layer is spread evenly over the entire surface area. Currently, there are a number of types of products presented, among them it should be noted:
- universal (small);
- universal average;
- universal large;
- fiberglass mesh;
- plurim mesh;
- armaflex;
- syntoflex;
- steel;
- galvanized.
The presented types of products are distinguished by a wide range of functionality and exhibit a high degree of resistance to exposure high temperatures and harmful chemical exposure.
Some of the presented species are characterized by their chemical inertness and can be used for both external and internal finishing works. These products are distinguished by the presence of artificially reinforced components and are used in areas where they are subject to increased load.
2 Which mesh is best to use?
When choosing the presented products, the primary parameter is the value of its thickness. Before carrying out work, the lowest point located on the ceiling is located, and then its mark is made using a laser or building level.
After carrying out such manipulations, it will be possible to assess the maximum thickness of the plaster layer, which will subsequently be formed. After a certain result is obtained, a series of specific actions are performed.
In the case when the plaster thickness parameter will not exceed the value equal to 20 millimeters, provided there are no rusts at the ceiling base, a plaster layer can be applied.
After this, you can proceed to installing beacons. If there are rusts on the ceiling, or the leading layer is 20-30 millimeters thick, it would be most rational to use a mesh product made using fiberglass.
This is due to the fact that the main purpose of the presented meshes is to protect the entire surface from the formation of cracks.
If the layer has a thickness of 30 millimeters, then it should be applied.
It will be able to high degree effectively prevent peeling under the influence of its own weight.
If the ceiling is uneven and the height differences are more than 50 millimeters, then plaster will need to be abandoned altogether.
2.1 Technical nuances of installation and application
When purchasing such a product, you need to take into account the fact that the cell size should be slightly larger than 5x5 millimeters, with a density value of 110 to 160 g/m².
In most cases, the presented material must have a quality such as resistance to the harmful effects of alkalis. At the same time, the indicator minimum thickness the plaster layer when using a mesh made using fiberglass should be equal to 3 millimeters, with maximum value 30 millimeters.
Before starting work, the product must be trimmed in accordance with the proportions and dimensions of the canvas itself. The size of the canvas will directly depend on the location of the grid. It can be longitudinal or transverse.
If there is rust on the ceiling, then the mesh is located there as one solid sheet with orientation to the location of each of the seams. In the case where there are no rustications, there will be no requirements for a special arrangement of products.
It is only enough that when performing work, the entire working surface will be evenly covered with a mesh.
It is best to trim with a margin of 10-15 centimeters in order to strengthen the existing seams located between the walls and ceiling. At the beginning of the work, the entire surface is covered with the very first putty layer. A plaster mesh is placed on top of it and slightly pressed in.
Next, the second layer is applied. According to the regulations, such an operation can be carried out in one go. Or you can wait until the intermediate layer dries. The fiberglass mesh is designed to be attached to the wall with screws or staples, and the plaster will go on top.
The presented method is applicable when it is planned to create a thin plaster layer. Then the product will be located right in the middle of the plaster layer.
If the layer thickness exceeds 10 millimeters, the mesh may slide to the edge, and not the plaster will be reinforced, but only its surface. The initial working stages are carried out taking into account the following algorithm.
Knowing how plastering is done on a grid allows you to act skillfully when there is a risk of the mortar slipping. To prevent this from happening, the wall is strengthened reinforced material. Is mesh needed when plastering? It is simply necessary as a reinforcing layer.
The solution on the walls is retained in the cells of the canvas and does not flow down. After the applied mixture hardens on the surface of the walls, a durable, durable coating is formed. A layer of plaster 10 mm thick can be dispensed with without reinforcement. For thicker coatings, installation of reinforcement is required.
Modern mesh plastering technologies use several types of reinforcing materials:
- fiberglass;
- polymer;
- metal.
Fiberglass
Similar fine meshes are used on surfaces with non-critical defects Fiberglass mesh for plaster is a thin, fine-mesh fabric.
Wall plaster using a grid of this type is applied to indoor walls. Fiberglass sheets are attached to surfaces that do not require special leveling.
Typically, such a mesh is covered with a thin layer.
Polymer
Recently, plastic has become very popular. In some cases, polymer fabrics are equivalent in their load-bearing capacity to metal reinforcement, and their cost is an order of magnitude lower.
Polymer mesh does not weigh down the structure You can always find polymer mesh on sale with different cell sizes and thicknesses. With its help, you can level walls with surface deflections of up to 20 mm per 1 linear meter.
Metal
It is recommended to use metal mesh on surfaces with large defects Metal mesh for plaster is used mainly for finishing facades. Metal reinforcement is used to strengthen the surfaces of fences with complex geometry, deflections of more than 20 mm per 1 linear meter.
When working on metal, cement-based mixtures are mainly used.
Metal coatings are produced in several modifications:
- The woven structure of the coating is made from thin wire. Woven fabric covers the walls both inside and outside of buildings. The usual cell size is 10x10 mm.
- Wicker reinforcement is also called chain-link mesh. It is very convenient to use when reinforcing large areas. Standard size cells - 20x20 mm.
- Welded sheets are made by spot welding metal rods. Welded reinforcement is used for significant shrinkage of buildings and structures. The cells of such reinforcement are made in sizes from 20x20 mm to 30x30 mm.
- Expanded metal reinforcement is made by stretching a metal sheet that has been previously cut through with transverse notches. When the sheet is stretched on a special machine, the sheet forms diamond-shaped cells. Reinforcement of this type not only withstands a thick layer of plaster, but also significantly increases the load-bearing capacity of enclosing structures.
Plastering over metal mesh forms the most reliable and durable layer of wall finishing than using reinforcement made from other materials.
Installation of grids
Each type of reinforcement, taking into account the characteristics of the material. More about types construction mesh watch in this video:
Attach the mesh to the solution Lightweight plaster mesh does not require special fixation.
Fiberglass mesh for plaster is secured around the perimeter with a mortar rubbed in with a spatula.
The strips are connected to each other with an overlap of 150-200 mm, for which, before starting work, the mesh is cut into strips taking into account this overlap.
In case of a particularly complex configuration of the wall surface, the canvas is additionally secured with dowels. If the stripes are placed on wooden surfaces, then it is convenient to do the fastening with a stapler.
Coating with polymer sheets
Plastic sheets are attached in some cases in the same way as. In other fastening options, they resort to the use of dowels and self-tapping screws. The material is attached with an overlap, placing one strip over the other by 150-200 mm.
Metal coatings
Strengthen the metal mesh with dowels Metal plaster mesh can withstand fairly thick layers of finishing. Due to the fact that such reinforcement has a significant specific gravity, the fastening of metal reinforcement must be especially reliable. Installation of metal wall coverings is carried out as follows:
- The pre-reinforced coating is cut into fragments of the required size, not forgetting about overlaps when connecting the mesh overlapping.
- If the canvases have been stored in a warehouse for a long time, they are treated with a solvent or rust reducer.
- Thin coatings are cut with metal scissors. Welded and expanded metal sheets are cut with a grinder equipped with a metal cutting wheel.
- The mesh is fastened with dowels. To do this, holes are drilled in the wall (if the wall is concrete, then this is done with a hammer drill). Plastic dowels are inserted into the holes.
- Reinforcement begins from one of the upper corners of the wall. Having attached the mesh to the wall, screw the screws and washers into the dowels. The washers act as fasteners.
- A distinctive feature is that during such work the canvases are fixed in such a way that there is a small gap of 3-5 mm between the reinforcement and the wall. This is necessary to place reinforcement in the body of the plaster layer, which gives the wall decoration greater solidity and high load-bearing capacity. Detailed description Watch the process in this video:
The reinforcement must be secured in tension and not bend. Otherwise, voids may form in the body of the finish, which will negatively affect the load-bearing capacity of the plaster.
Installation of beacons
When the reinforced sheets are fixed to the fence, guide strips (beacons) are installed to move the rules along them. The rules are made from a piece of metal profile 1 to 1.5 m long.
The guide strips are fixed with gypsum mortar. The ruler controls the level of the beacons.
Plastering walls
Fences with mesh are plastered in 2-3 layers.
The walls are plastered in several layers The work is carried out in the following order:
- The first layer is applied using the cape method. The mortar collected on a trowel is thrown onto the fence with a sharp movement of the hand. To do this, use a mixture with a consistency reminiscent of liquid sour cream. This method of applying the solution allows you to obtain a dense, durable layer of plaster.
- After the first layer has “set”, the next layer of plaster is applied. The second layer is made from a denser mixture - a dough-like consistency.
- Plastering is done from bottom to top. The thrown solution from below is picked up with a rule and brought up. As the rule moves, it is slightly alternately shifted from side to side. This helps to distribute the mixture evenly over the wall surface.
- After the plaster has dried, the beacons are removed. The remaining clearings are sealed with mortar.
- At the end of the work, the surface of the walls must be grouted. For this they take liquid mixture. Using circular movements of a wooden grout or trowel, the liquid solution is rubbed onto the plastered wall, thereby finally forming the finished surface of the wall.
With all the diversity building materials, used in the construction of walls, the most popular view The finishing is still plaster. Even if later it is planned to use other Decoration Materials, everyone is trying to do at least rough plaster.
In the 90s, the concept of “European-quality renovation” entered our lives. At the same time, everyone puts their own meaning into it. Some people mean high-quality finishing materials and expensive repairs, others believe that these are, first of all, perfectly smooth surfaces made in accordance with European standards. For, use a mesh for plaster.
However, the standards of European countries do not require the mandatory use of reinforcing mesh. It is recommended to use it only in difficult places.
The mesh helps reduce the appearance of cracks, but does not ensure the integrity of the finishing layer.
Advantages when using:
- Applying the solution to the mesh can be done quickly, which makes plastering work easy, even without experience.
- If the mesh is securely fastened to the base, then you can be confident in the durability and strength of the finishing layer.
- The plaster applied to the mesh will, in fact, be monolithic design, which will not be subject to shedding and cracking.
- Grid plaster provides reliable adhesion to walls made of any materials.
What are they?
For various types grounds apply Various types grids:
Masonry
This mesh is made from polymers. The cells in the grid have dimensions of 5*5 mm. It is used for plastering.
It is used not only for plastering works, but also during finishing work using. It is made from polyurethane. Several types are available: cell size 6*6 mm is considered small, 13*15 mm is medium and 22*35 is large.
Made from specially treated fiberglass. It is used for both plastering and finishing work. Cell dimensions 5*5 mm. This is the most resistant mesh to chemical influences. In addition, fiberglass tolerates elevated temperatures well.
This type is made of polypropylene. Resistant to aggressive environments. Has a cell size of 5*6 mm. Can be used for plastering internal and external surfaces;
Armaflex
The mesh is made of polypropylene, but additionally has reinforced cell corners. Cell dimensions 12*15 mm. It is used when plastering surfaces with a thick layer.
It consists of steel rods soldered at the corners of the cells. Available whole line steel mesh with different cell sizes.
Due to its susceptibility to corrosion, it is used only for interior work. Just like steel ones, they have different cell sizes.
Galvanized
Unlike metal, it can be used for outdoor work.
Which one to choose?
In order to select the correct mesh, you need to use a level to determine the differences in the base. This will allow you to know approximately how thick the plaster layer will be.
There are several solutions for using a grid:
- If the expected plaster layer is less than 20 mm, it is recommended to use a universal mesh. It will do an excellent job of fixing the mortar and preventing the appearance of cracks.
- If the plaster layer is more than 3 mm, a metal mesh is required.
- If the differences are more than 50 m, you should think about it.
How to install?
The installation technology depends on the material from which it is made.
To attach the metal mesh you will need self-tapping screws, dowels, metal scissors and galvanized mounting tape.
All work should be performed in accordance with the instructions:
- Using metal scissors, cut a piece of mesh to fit the wall and degrease it. To do this, you can use any solvent or acetone.
- Using metal scissors, cut the galvanized mounting tape into small pieces.
- The mesh must be installed from top to bottom, placing the canvas horizontally, starting from the ceiling itself. The upper edge of the first row is secured with self-tapping screws. Considering that the metal mesh has large enough cell sizes so that the mesh does not jump off the screws, pieces of mounting tape are placed under their caps so that it presses one side of the cell to the wall. There are widened nuts on sale that can also be used for these purposes, however, they are much more expensive than mounting tape.
- If the mesh is installed on 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 tightly to the wall. The ideal distance between dowels is 500 mm.
- The mesh panels are attached over the entire surface of the wall with an overlap of 80-100 mm.
- Fastening plaster mesh made of fiberglass.
This mesh does not need to be attached over the entire surface: it is enough to securely attach it along the upper edge. It is also attached starting from the ceiling. The cell sizes of such a mesh are small, and it itself has little weight, which makes it permissible to use only self-tapping screws, without additional accessories such as mounting tape or nuts.
It is important that there is a piece of mesh left in the corners to create a slight overlap.
The greatest strength can be achieved if the mesh is applied to the wall as a whole panel. Therefore, beacons must be placed along a grid already attached to the wall.
Ceiling mesh reinforcement
Several materials can be used to reinforce ceilings.
Just like for walls, they use a mesh made of fiberglass, metal, as well as shingles - a structure made of wooden slats:
- Plastic or fiberglass mesh It is recommended to use if the expected putty layer is no more than 30 mm.
- For 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.
- Shingles have 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 slats. This is the simplest method of reinforcing the plaster layer, but is only suitable for wooden bases, simple design.
Before attaching the mesh, it is necessary to prepare a mounting tape, pre-cut into small pieces with metal scissors. Metal mesh should first be degreased using acetone or other solvents. As a last resort, you can simply wash it with any soap and detergent that can wash away oil or grease traces.
The mesh needs to be cut 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 nail the structure at the tops of the cells to the ceiling.
- Fastening metal or plastic mesh can be produced both on nails and on dowel-nails. They need to be arranged in a checkerboard pattern at a distance of 200-300 mm from each other.
- If you do not use a mounting grid, you can use nails with large heads or use washers.
The use of plaster mesh when sealing joints in floor slabs
To carry out these works, a strip is cut out of the mesh along the width of the area, adding 5-10 cm on each side. It is attached in the usual way and sealed with mortar.
In any case, the application of the solution 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 mesh allows you to make repairs more durable and of higher quality. Subsequently, it will be enough to carry out only redecorating: replacing wallpaper, painting the ceiling.