Construction technologies are developing more and more every year. Various devices are emerging that not only help to ensure the safety of people working on the construction site, but also improve the quality of the work itself. One of such significant products is the facade mesh, which, depending on the type, has both a protective function and a sealing and strengthening in relation to the building finishing solution.
The facade mesh is a canvas , woven from many threads, which are made of metal, fiberglass, polyethylene. In appearance, it really looks like a rather soft mesh with cells of different sizes - small and large.
Sometimes the surface of the material from which the mesh is made can have an additional protective coating. The material itself, as a rule, is processed with various means that improve its performance - most types of mesh are not afraid of alkalis and other chemicals that may be contained in the materials used for finishing. The facade mesh is also a fairly durable product.
Facade plaster mesh
Its characteristics such as elasticity, incombustibility , low weight, durability, low price with high quality determined its widespread use that perform different functions from each other. For example, there is a material used for a protective purpose during construction work, and there is one that is used to seal mortars applied to walls.
Thus, the mesh for the facade can be divided into two types - protective and reinforcing for plaster.
Facade mesh for scaffolding
When restoration or finishing work is carried out outside the building (and indeed any facade work), there is a high risk that various objects may fall from the height of the building on people working in the immediate vicinity of the object: construction waste, tools, materials used for repairs. At the same time, they can fall not only on the street, but also indoors. This is where a protective facade mesh comes in handy, which is able to protect workers from injury. It is usually made of dense nylon, polyethylene, less often fiberglass, and the threads have such a weaving that will not allow the mesh to suddenly unravel.
An example of using a protective facade mesh
This type of mesh can also be used to "mask" a building being reconstructed. Wrapped with it, it will not only not pose a danger to people passing by, but it will also look much more harmonious, which is especially important for central city streets and cultural objects.And also the building, wrapped in a net, will be protected from dust and dirt.
Note! Inventive summer residents have come up with other uses for the facade mesh. It is often used as a decorative fence in the home garden.
Facade shading construction mesh
Facade protective nets
When walls are being finished, leveling, plastering, it is often necessary to give the coating additional strength. And this applies to the walls not only inside the room, but also outside. For these purposes, a fine-mesh facade mesh is ideal, which will act as a rigid and durable base for plaster, providing a strong and reliable connection of mortars to the wall. This mesh is used both for finishing walls and ceilings, and for slopes. It is usually made of metal or fiberglass with a thread thickness of up to 1 mm.
Application of plaster mesh
The fact is that even if the treated surface was prepared with the utmost care (all irregularities were removed), During application, the plaster can easily go wrong, which often happens for the following reasons:
And it is the facade mesh that is able to protect the incorrectly laid (and correctly laid too) plaster from premature shedding. The mesh will take on part of the load that occurs during the operation of the house, and the finishing material will not collapse much longer (the mesh will not allow it to crack and fall off). It is also often used if you plan to lay tiles on a plastered surface.
Laying tiles on the prepared surface
Note! Facade mesh can also be used when it is necessary to level excessively curved walls and use too thick a layer of plaster for this.
Fixation of the plaster mortar with a mesh occurs due to the fact that the material has small cells, in which the solution is retained and has time to harden together with the mesh threads - a single monolithic and very durable surface is obtained. In this case, the plaster will not stick to the wall in a single piece, but as if with a large number of small inclusions, although outwardly it looks like an ordinary plastered wall.
Why do I need a grid for plastering the walls of the facade
Plastering the facade on insulation - scheme
The main reasons why the facade mesh should be used in finishing work:
And today we will pay maximum attention to such a facade mesh.
Polymer mesh for plaster
Building plaster mesh
As we have already seen, there are at least two types of facade mesh.
But it can also be classified according to the type of material that was used for manufacturing. Often it is the material that indicates the scope of the facade mesh.
Table. Types of facade mesh (classification by material).
|Material of manufacture||Characteristics|
| Very reliable and durable (stronger than fiberglass mesh), made by two methods - the so-called pulling or conventional welding from very thin metal threads or wire.
On the construction site, it is often used for protective purposes, as well as for wall decoration, especially if a thick layer of mortar has to be laid. The weight of such a net is quite large. Since the metal is corroded, experts recommend purchasing a galvanized mesh for work. Attention - you must not use steel mesh without a protective coating for facades! The welded mesh is made by welding mutually perpendicular threads at their intersection. Expanded or expanded metal mesh is made on special machines from a large sheet of metal.
Its cells are diamond-shaped. There are no welds.
| This mesh is not afraid alkali, fire, due to which it is considered the most reliable and is often used for finishing work. It is often used where surfaces will be painted. Quite lightweight and easy to install.
Manufactured in accordance with GOST R 54963-2012.
| Category providing the buyer has a huge selection of facade grids. They can be made of nylon, PVC, polyethylene and other polymeric materials.Such nets are often used to shelter buildings, protect them from debris, dust, moisture, which is especially important when working with decorative finishing materials. Note that polyethylene nets are not afraid of ultraviolet rays, but nylon is considered a more durable material.
GOST R 54963-2012. Alkali-resistant reinforcing fiberglass mesh for facade. Download file (click on the link to open the PDF file in a new window).
GOST R 54963-2012
Polymer mesh for plaster
Further, polymer mesh is classified by the peculiarities of its protective layer. Colors will help to distinguish them from each other - thus, the mesh is:
Facade green mesh
Facade plaster mesh IDEAL orange
Grids can also differ in the size of cells - for example, the following types are distinguished:
The sizes of the cells of the facade mesh are different
It's hard not to get confused in such a variety of meshes.
However, when choosing this material, you should pay attention not only to what it is made of, but also to other parameters.
Some of the most important indicators for fiberglass and synthetic mesh are resistance to aggressive environments and tensile strength. It is also worth paying attention to how well the threads are connected (that is, weaving) - the final strength and ease of installation of the material will largely depend on this.
Choosing a facade mesh
Tensile strength or breaking load is an indicator that demonstrates the maximum applied force that the mesh will withstand under strong stretching until complete rupture. And directly the tensile strength will depend on the density of the facade mesh.
Usually this figure is indicated on the packaging of the material.
Facade building mesh
Advice! If it means finishing with plaster of a flat and relatively flat surface of the wall or ceiling, then the mesh is chosen with a load equal to at least 1800 N, and if it is planned to decorate the facade, then about 1300-1500 N.
Also, when choosing a facade mesh, you should focus on alkali resistance. It is the impact of an aggressive chemical environment that can significantly reduce the strength of the material. The mesh is tested for this indicator in the same way as for tear, but after the so-called alkaline tests.
Cheap and low-quality types of mesh after such tests very quickly become unusable.
An example of using a low-quality facade mesh
Tip! You can determine the alkali resistance of the mesh yourself. To do this, a small piece of material is dipped in a solution of ordinary laundry soap for several days. The material passed this test should not change color or crumble. Otherwise, it cannot be used.
When buying a net, they pay attention to what is written on the package. It is advisable to recheck some of the above parameters if possible This is especially true for nets made in China. If the manufacturer is time-tested, and the reviews about him are good, then additional checks of the grid may not be arranged.
Carefully read what is written on the packaging
If the choice of the facade mesh is made in favor of a metal product, then it should be remembered that metal can be either galvanized or without a protective coating. And the service life and reliability of the mesh will depend on this.
For wall plastering, it is better to use a mesh made by the expanded metal method, since it is stronger and more reliable than welded mesh.
An example of using a metal mesh without galvanizing
Table. Indicators characterizing the types of facade meshes.
|Mesh type||Density, g / m3||Dimensions, m||Breaking load|| Cell dimensions, mm |
|Protective||120; 140; 160||1 * 50||700-2000|| 2 * 2, 3 * 3, 4 * 4, 5 * 5 |
|Reinforcing||125, 145, 160||1 * 10; 20; 50||500; 840; 1080|| 5 * 5, 6 * 6 and more |
The size of the cells when choosing a grid also plays an important role. The higher the requirements for the material, the smaller the dimensions of the cells should be.
Installation of facade reinforcing mesh
It is important to remember that the choice of mesh is also influenced by the thickness of the plaster solution. Fiberglass mesh is used for decorative or thin-layer finishing (mortar layer thickness is up to 5 mm), but for a thick mortar layer it is better to take a metal mesh (thickness of the applied solution layer is more than 5 mm). For finishing, use a mesh with the smallest cells.
Note! Facade mesh can also be used to level surfaces such as floors.
Construction reinforcing mesh
How is the fiberglass facade mesh installed under the putty? Consider mounting in small areas.
Step 1. The surface that needs to be putty is cleaned from the old coating, debris, dust, large flaws on it are corrected. For reliability, the surface is primed and then putty in one layer. You can dilute the special mesh adhesive according to the instructions on the package. In this case, it is not applied at once to the entire surface to be treated, but in stages so that it does not dry out.
Step 2. A piece of mesh of the required length is evenly applied to the treated surface.
The mesh is applied to the wall
Step 3. With the help of a wide spatula, the mesh is carefully "smeared" - smoothed over the glue surface. There should be no air under the cover.
The mesh is smeared with the mixture
Step 4. The surface obtained as a result of the previous steps, again putty, dried, primed. Next, a layer of finishing putty is applied.
Application of the finishing putty
Another photo of the process
Attention! Two adjacent sections of the facade mesh must be glued overlapping each other (10 cm). To reinforce corners, a thin mesh or facade corner is used.
PVC corner profile with mesh
There are some nuances when installing a metal mesh. Before using it, it is imperative to degrease it, and it is enough to simply wipe the galvanized with a damp cloth. Before carrying out work, the mesh fabric is immediately cut into the required segments, and then it is necessary to drill holes for the dowels in the surface being trimmed, on which the mesh will be attached. The drilling step is about 25 cm, the depth of the holes exceeds the length of the anchor by 2-3 mm. The mesh is fixed with screws.
If in some places it lags behind the wall, then additional holes are drilled and auxiliary fasteners - screws are screwed in.
Metal facade mesh
Types of decorative plaster
With decorative plaster, it is easy and simple to create expressive and unique patterns on the surface of the walls. Admiring the spectacular facade, we can conclude that only specialists can perform such a task. However, it is not. Read more in this article.
This is how the facade mesh is used. The material can really do a good job both indoors and outdoors. And using it is not so difficult, especially if you carefully read the instructions for use.
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