How to work with mesh for plaster. Plastering the facade on a grid (30 photos): plastering and cladding

The method of installing a polymer mesh involves a number of stages.

1. At the first stage, the base is prepared. Preparatory work include cleaning and priming the surface.
2. The next step is to measure the wall surfaces and cut the canvas in accordance with the measurements taken and add a margin of approximately 10 cm (for overlapping panels).
3. After this, the adhesive-based composition is prepared.
4. The main stage is applying the initial plaster layer with a density of 3-5 mm with pressing the painting mesh into the solution.
5. After the initial layer has dried, the surface is covered with a primer and the final layer of plaster is applied, leveling is carried out as a rule.
6. On last stage dried wall surfaces are sanded.

A few useful quick tips will allow you to complete the job of plastering walls with the highest quality possible.

1. The denser the plaster layer applied to the base of brick or concrete, the stronger the mounted steel mesh should be.
2. Simple steel mesh in rooms with high level humidity, for example, in baths and bathrooms, as well as for external cladding, it is undesirable to use. 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.
3. Before installing a metal reinforcing product, it must be degreased.
4. Reinforcing plastic mesh for plaster mortar, prepared on the basis of cement, is unacceptable, because over time cement mixture will corrode the product.
5. Many people, when performing work on plastering walls, first lay the mesh to the wall surface and only then plaster - professionals do not advise doing this: as a result, cavities may form in the cells and the degree of adhesion will decrease.
6. When calculating the required number of dowels, keep in mind that per 1 sq. m. approximately 16-20 pcs are required.
7. When installing reinforcing material, do not allow it to sag or peel off from the surface by more than 10 mm.
8. For internal cladding, as well as for external cladding, the best option will use a reinforcing mesh with cells with a diameter of 5x5 mm and 10x10 mm.
9. The fiberglass mesh must be impregnated with a polyacrylic compound. If the mesh is not impregnated, it cannot be used with plaster mortar, otherwise it will gradually collapse under the influence of alkalis.
10. If for finishing wooden surfaces shingles were used on the walls; it is preferable to choose a chain-link mesh.
11. With a layer density of about 50 mm, due to strong surface differences, it is undesirable to plaster the walls. Preferably used for decoration Wall panels- this finishing material will help hide existing defects.
12. In the case of plastering small areas, it can be used as fasteners. plaster mixture. It is applied pointwise, after which it is evenly distributed over the entire area.

Application of reinforcing plaster mesh during execution interior work for plastering wall surfaces allows you to do it efficiently. The presence of a mesh extends 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

Watch the features of plastering walls with mesh in the video:

The popularity of plaster coatings is due to several reasons. This material is easy to apply to any surface, it is resistant to mechanical stress, withstands temperature changes well, is durable and economical.

Types of plaster solutions

For various types Various plaster compositions are used on plastered surfaces. Lime or cement-lime mortar is used for finishing brick walls, and cement mortar is used for concrete surfaces. Such solutions include certain additives and fillers required by the operating conditions and purpose of the surfaces to be plastered. Without them, the solution will turn out to be fragile and surfaces treated with a low-quality solution will quickly become covered with cracks.

Installation of plaster mesh

Metal mesh should cover concrete walls that have strong unevenness and protruding places, areas where they meet wooden and metal surfaces, as well as surfaces that require large thickness plaster marking.

The use of plaster mesh provides the structural rigidity necessary in these cases. This mesh is made from round wire rod or woven from wire.

If the surfaces are significantly uneven, in order for the walls to be plastered on the grid to be of high quality, a frame is installed. On wooden walls slats are nailed to which the mesh is attached with nails or staples. On brick and concrete walls steel pins are mounted to which the mesh is attached with wire. The joints of the walls and the protruding corners of the partitions are sheathed with mesh strips.

On large structures, beams, tees, channels, etc. are used to construct the frame.

The frame is necessary for high-quality fastening and tensioning the mesh. It is stretched evenly and tightly, the joints of the mesh are firmly woven with wire. This is done to ensure that the entire structure is rigid and motionless.

Plastering walls on a grid without a frame

For small, flat surfaces, it is permissible to plaster the walls on a grid without a frame, which is much simpler and cheaper. The mesh is attached to beams and protruding structures using knitting wire with tension and fastening with dowels. TO flat surfaces- using a mortar or a construction gun.

The mesh should have small cells and not sag after installation. To protect against corrosion, the mesh and metal fastenings if they don't have protective coating, must be processed oil paint, bitumen varnish or cement laitance.

The main rule when plastering on a mesh is to surround the mesh with the mixture thrown on all sides. If this condition is met and used quality plaster As a result, a strong monolithic reinforced mortar slab is formed.

Grid plaster is an effective way to rough-finish walls. But what is the essence of this method, which grid to choose and in what cases should it be used? Next, we will try to answer these and some other questions related to applying plaster to the mesh.

Why do you need a plaster mesh?

As you know, plaster is universal material, as it can be applied to almost any surface. However, not all of them have sufficient adhesion to the plaster mortar, as a result of which the finish can peel off and crumble. Moreover, sometimes this process begins almost immediately after the repair is completed.

Such surfaces primarily include brick and wooden walls. Accordingly, the use of plaster mesh will prevent this process. In addition, this material is used for another reason - it helps reduce surface cracking, which is especially important if the finishing is done in a thick layer.

Types of mesh and their application

Today there are several types of meshes on the construction market. First of all, they differ in the material from which they are made.

The following types can be used for plaster:

• Fiberglass;
• Metal.

If the wall surface is fairly smooth and the plaster will be applied in a thin layer, then a fiberglass reinforcing sheet will be sufficient to strengthen the finish. But if the walls are crooked and the thickness of the plaster is more than two centimeters, then you cannot do without a metal mesh.

Unlike fiberglass, metal mesh There are different types:

• Woven;
• Wicker;
• Welded;
• Expanded metal.

Now let's look at the features of each type of material, which will allow us to do right choice when purchasing it.

Woven

This mesh is a fairly flexible fabric made from durable thin wire. It is sold in large rolls, making it quite convenient to transport.

Most often it is also used for interior work. The only thing when choosing this material, you need to pay attention to the cross section of the cell. Woven plaster mesh 10x10 mm is the best option.

Advice! Required condition The use of this fabric is the presence of a zinc coating on it.

Wicker

This material is also called mesh. As you might guess, it is done by weaving wire.

Most often, the cell cross-section of this plaster mesh is 20x20 mm. Most often it is used to strengthen large areas of walls and facades. The material is also sold in rolls, like the previous canvas.

Advice! If plastering is carried out with a clay-based solution, then a 50x50 mm plaster mesh is used for these purposes, i.e. with a large cell cross-section.

Welded

Welded mesh is made by joining wires using the welding method. This fabric has symmetrical square cells.

Most often, the wire for its manufacture is galvanized or treated with a special polymer protective composition. Typically, this material is used for plastering walls subject to severe shrinkage. Thus, welded mesh can be used when plastering new buildings or buildings that stand on moving soils.

Expanded metal

The TsPVS plaster mesh has a rather complex manufacturing process. It is based on a metal sheet, in which on special machine holes are made. After this, such metal is subjected to tension, as a result of which it turns into a mesh.

The cells have the shape of diamonds and are arranged in a checkerboard pattern. This material is used only in cases where the consumption of plaster mortar per square meter is expected to be insignificant.

TsPVS is also sold in rolls one meter wide and different lengths. As a rule, the price for expanded metal mesh is the highest.

Technology of applying plaster to mesh

Preparing the base

Despite the use of mesh, the base still needs to be carefully prepared before plastering:

• First of all, the old coating is removed from the wall - paint, plaster, etc.
• All peeling and crumbling areas must be removed.
• Then the base is cleaned of dust. If there are traces of mold or mildew on the surface, the wall must be cleaned with a wire brush.
• A layer of primer is applied to a solid and clean wall surface, which improves adhesion, strengthens the base and protects the wall from the effects of microorganisms.

Mesh installation

After the base has been prepared and coated with primer, the plaster mesh can be installed.

The work is carried out in the following order:

• The first step is to measure the height of the wall that will be plastered.
• Next, you need to unroll the roll and cut the sheets to the required size using special metal scissors.
• After all the pieces are prepared, they should be attached to the wall. Installation of plaster mesh is usually done with self-tapping screws or construction nails. The canvases should be overlapped by 10 cm. To ensure that the mesh is securely fixed, it is necessary to use washers or perforated galvanized tape.

Note! When installing the mesh, you should pay attention so that it does not sag or lag behind the wall by more than 1 cm.

It must be said that in most cases, for internal and, a plaster mesh of 5 - 5 mm or with cells of 10 by 10 mm is used, with the exception of certain cases, which are indicated above.

Installation of beacons

After the mesh is securely fixed to the wall, you need to install beacons with your own hands, thanks to which a flat surface of the walls is achieved. For these purposes, a plaster profile should be used.

Installation is carried out in the following order:

• First of all, the vertical position of the outer beacon is set using two self-tapping screws. The position of the profile should be controlled using a building level.
• Then the profile is fixed on self-tapping screws using gypsum mortar, which quickly hardens.
• After this, the outermost beacon is installed on the other side of the wall. To ensure that the remaining guides are located in the same plane, you can stretch a thread between the outer beacons.
• Next, intermediate profiles are mounted in increments smaller than the length of the rule, which will allow the tool to rest on them when leveling the wall.

Applying plaster

After installing the beacons, you can proceed directly to plastering.

The instructions look like this:

• Immediately before finishing, it is necessary to have a creamy consistency.
• Then the first layer of plaster is applied, which is called spraying. The composition is thrown onto the walls using a trowel or ladle. While doing this work, some force should be applied so that the mixture sticks to the surface and does not slide down.

The spray layer should be about 1 cm.

• After the spray has set, you should prepare a thicker solution and apply it to the walls using a trowel. If this is achieved required thickness, then the surface must be leveled using the rule. To do this, the tool should be pressed against the beacons and pulled from the bottom up, which will allow the solution to be rubbed in and its excess removed.
• When the plaster has set, you need to remove the beacons and seal the remaining marks with a solution.
• The final step is to level the corners. Joints between wall and ceiling, as well as internal corners, leveled using an angle spatula. For finishing external corners metal perforated corners are used.

This completes the plastering process; now the mesh and plaster form a durable coating on the wall that can last for many years.

I must say that we considered the installation of metal mesh. If fiberglass sheeting is used, it is usually glued to the wall directly during the plaster application process.

Conclusion

Having understood the types and types of mesh for plaster, as well as their purpose, it will not be difficult to choose the right material. However, to achieve a positive effect from its use, it is necessary to follow the finishing technology described above.

For more information on this topic, watch the video in this article.

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 should 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. Usually to protect the walls of the first floor by builders when performing plastering works metal mesh is used.

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 – 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 standard width at 1 meter.

Under absolutely thin layer a polymer mesh or a 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.

1. Measure the height from floor to ceiling. Spread the mesh and use metal scissors to cut required number panels
2. 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.
3. Prepare. Add an antiseptic to it so that there is no mold on the plaster in the future.
4. 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 work surface tool and, pressing it against the wall, pull it from bottom to top. If the mesh is visible, repeat the procedure.
5. 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 grids, the solution should be applied 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 spend a lot of effort and time, but also ruin it. expensive materials. We hope that the tips given in this article will help you carry out repairs correctly and avoid many mistakes.

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.

When plastering walls without using a reinforcing layer, there is a high risk that the applied solution will simply fall off the base. And when finishing brick and wooden surfaces, the plaster may begin to peel off and crumble even after repairs have been completed. This usually occurs due to insufficient adhesion of the materials indicated above. The mesh allows you to form monolithic slab, which is not afraid of any loads. Different grids are designed for a certain load, and the type of material used depends on the thickness of the plaster layer.

On a note! With the help of reinforcement it is created durable coating, which will not crack during long-term use. Even if the solution preparation technology is violated, the mesh will ensure the integrity of the plaster layer.

Types of grids

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

• fiberglass;
• metal.

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 surfaces with large area. 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 a metal mesh you will need self-tapping screws, construction dowels and metal mounting tape.

1. 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 cloth must be degreased by wiping it with a rag moistened with a solvent.
2. 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.
3. When installing on a concrete or brick surface, you need to drill holes in the wall and insert plastic dowels into them.
4. 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.
5. At the joints, the material is installed with an overlap of 8-10 cm.
6. 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, the plaster mesh is attached to the wall by fixing the material only along 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.

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 the old finish (if any) - paint, plaster, 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 flat surface during the plastering process. A special profile is used as beacons.

1. Installation is as follows: Using building level
2. , set the outer profile in a strictly vertical position and secure it with two self-tapping screws.
3. Next, the lighthouse is fixed using gypsum mortar.
4. 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.

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. The initial layer is 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 the first layer has completely dried, a thicker mixture of dough-like consistency is kneaded. 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. Final procedure – final alignment frozen surface. For this they prepare liquid solution

and, applying it to the wall, rub it in a circular motion using a grater.