Perforated corner how to fix. Installation of a metal corner on a vertical corner – Blog Stroyremontiruy

A metal perforated corner (profile) is used to form and reinforce the outer corner, and also, in some cases, serves as a guide when making walls.

Tools: Small spatula, medium spatula (trowel), long building level, mortar container, building mixer
Consumables: Plaster mortar (tile adhesive)

Before installing a perforated corner, you must determine its size. Take a tape measure and measure the height of the desired corner, then measure the resulting distance on the original profile and make a mark with a construction marker, then cut the corner in the marked place with metal scissors.

Installation and alignment of the corner

Immediately before installation, prepare a small amount of the mixture - the same one that you plan to use for (or plaster mixes). Decide on the thickness of the fixing layer: find the most protruding section of the corner - it is from this protrusion that the entire profile should be aligned. The thicker the layer, the thicker the portion of the mixture should be. Using or a trowel, throw the prepared solution at the corner in several places - above, below and additionally in three or four areas. Slightly press the metal corner into the resulting slides, and then, with the help, adjust it strictly vertically.

When the material hardens a little (gets up) - clean off its excess from the side edges of the profile with a spatula.

After the fixing material has completely dried, you can start plastering the wall.

Using a Profile to Form an Inside Corner

In principle, a perforated metal profile is not intended for forming an internal corner, however, in some cases, its use is advisable. In particular, a perforated corner can be used if you need to quickly remove only the corner (without dismantling the entire plaster layer and leveling the walls). The old plaster is knocked out 10-15 cm on each side of the corner, a perforated profile is mounted, after which the corner is plastered along the guide, which is the perforated profile, which can subsequently be removed from the sub-cooled mortar, and then the plaster can be leveled with a spatula. The profile is installed in the same way - it is pressed into small slides from the plaster mixture.

Shaping and reinforcing corners of prefabricated structures

A perforated corner profile is also used to form corners when assembling drywall (or DSP) structures - ducts, arches, etc.

First, a fixing compound is applied to the corner with a small spatula, and then, the corner is gradually pressed with a building level, achieving its correct position. When the composition hardens slightly, its excess is cleaned off with a spatula or knife.

IMPORTANT: When forming corners for subsequent tiling of the structure, use the same adhesive composition to fix the corner as for laying the tiles.

Great competition in production building materials promotes the emergence of quality products at a reasonable cost. In addition, many manufacturers are entering the market with new products and fixtures that the fitters were previously inexperienced with.

Such products include a plaster corner - indispensable part for production interior decoration premises. By using this item correctly, you can be sure that the corners in the room will become even and reliable.

Plaster corner and its varieties

Metal corner

Each owner, when starting repairs in his premises, very often faces the problem of leveling the walls and creating a high-quality cover for finishing. Paying attention to the corners in the room where the renovation will be done, many people do not know them.

Modern developers involved in the production of various building products have created and introduced into the "building world" such an invention as a corner for plaster , which is grateful not only to professional finishers, but also to ordinary people who make their own repairs in their apartment.

plastic corner

This item is used to form an even inner or outer corner. Despite its simple design, it requires certain skills to install it.

To date, there are 2 types of construction:

metal profiled corner;
plastic corner.

Each of these options has its own scope and certain advantages and disadvantages.

Metal corners for plaster

Aluminum fittings are lightweight and more reliable than the galvanized version

Plaster corners made of metal are classified according to the shape of the structure and material.

As a material for the production of plaster corners of this type, galvanized steel and aluminum are used.

Despite the fact that aluminum can be attributed to the genus of rather soft metals that require careful handling, corners from it are widely used, since the material is not very susceptible to corrosion, and products made from it can last for many years. In addition, the aluminum corner has a low weight, which subsequently does not exert additional load on the surface.

A corner made of galvanized steel is more susceptible to atmospheric influences than an aluminum counterpart, but at the same time it has high reliability indicators.

In order for the galvanized steel corner to serve you as long as possible and not start to corrode, it must be cut only with metal scissors, and not electric grinding tool. Installation of products should be done carefully so as not to damage the zinc layer.

According to the shape of the design, all metal corners for are divided into 3 types:

Regular angle. It has the form of a metal strip, bent at 90 0, up to 0.5 mm thick. Usually, perforations are found on the sides of the product, depending on the manufacturer, which lightens the weight of the product and gives it additional adhesive properties.
Plaster corner with mesh. Metal corners of this sample are widely used in the production plastering works wet way. The design feature of this product is that it is attached to the corner with the help of special overlays. metal grid 2-4 cm wide. Using this design, you can level a variety of surfaces.
Combined angle. This is the type metal structure consisting of aluminum or galvanized corner and fiberglass mesh. With its help, clear corner shapes are created on the surface, and the joint is correctly formed using a grid. For information on which option is better to choose, see this video:

Metal corner for plaster can be called ideal option for finishing work, but due to its significant drawback (susceptibility to corrosion), experts recommend using it only for gypsum putty or latex coating.

Plastic plaster corners

Plastic structures for create quite a lot of competition for metal counterparts in the building materials market. There are several types of plastic pads installed in the corners:

Standard plastic corner. Similar to metal structures. Its main difference is that it does not corrode. Its main drawback is the thickness of the product, which can exceed 1-1.5 mm, and makes its use impossible when puttingtying the surface, but it is great for plastering work.
Arched plastic corners. The structures help to create a high-quality arched opening in the room. Due to the segmentally divided 1 edge of the corner, its surface can be bent to different radii, thereby creating an even corner even in a difficult situation.
Mesh corners. Such products are used in places where a thick layer of plaster will be applied. Mesh extensions create an additional fixing base. Due to this, a high-quality angle is obtained even in the most difficult conditions.
universal angle. It has a mesh design and with its help you can create non-standard angles (excellent) due to the high-quality plastic used and a specially created fold line.

The main advantage of plastic plaster corners is their anti-corrosion properties, which allow them to be laid in cement-sand mortar, which is still a popular plastering material.

Fixing the plaster corner

arched corner

It is not enough to choose a quality product for framing metal or plastic corners, main task is its setting. There are certain nuances and postulates that every professional finisher will recommend to follow. These should include:

a solid wall should be at an angle;
the corner should be primed, as well as the walls;
the corner is set according to special ones, mounted according to the level;
the corner should be installed in such a way that the solution penetrates into all perforations;
the verticality of the installed product should be controlled using a level;
v extreme cases when the layer finishing material too thin, it is allowed to use additional mechanical fastening, which can be dowels with plastic sleeves and self-tapping screws;
plastering work on the corner element is carried out last;
for decorating a corner and removing excess mortar from the surface of a plastic or metal product there are special tools;
grouting the corner should be done on both sides alternately, while the product itself should not protrude.

If, when comparing the corner lining with the wall surface, you saw that the mortar or gypsum composition is not enough to drown the corner, you should use some kind of leveling compound or sealant for these purposes.

Summing up the material presented, it is worth saying that the plaster corner is an indispensable tool for the owner of an apartment or house, trying to do it on his own for the first time Finishing work in your premises.

Having made right choice products and having completed its high-quality installation in accordance with the recommendations, you can be sure that the corners in the room will be even.

When plastering and filling walls, the most difficult place is the outer corners. These are often the slopes of windows and doors, the junction of rooms with corridors, the edges of a multi-level ceiling, etc.

Corner framing - difficult task, even for an experienced plasterer. In the best way to arrange the outer corner when doing plastering work, you can use a perforated corner.
A metal or plastic corner embedded in the plaster gives the outer corner the desired shape and strengthens it. weakness, i.e. protects the plaster along the edge of the corner (in a thin layer) from destruction by accidental impact. The video shows the process of decorating the corner during plastering.

If the outer corner is 90 degrees, then a standard perforated metal corner - 90 degrees - is suitable for its design and plastering. The technology for installing a perforated corner is quite simple.

A putty mortar is being prepared (often based on gypsum) in accordance with the instructions for use.
A corner is cut to the desired length.
The installation site of the corner is not covered with a thick layer of mortar. Putty is applied with a narrow spatula along the outer corner on both sides to a small width - 5 - 10 cm. The solution acts as an adhesive, therefore it is applied in a thin layer so that the excess does not have to be squeezed out from under the corner and then removed as waste.
The corner is installed in its place, pressed into the solution. In order not to deform a corner of thin metal, it must be handled carefully. The corner is pressed into the solution using a flat rail of suitable length. It is more convenient to use a level or a rule.
Then, with a spatula, excess mortar is removed, protruding through the perforated holes of the corner.
In order to smooth out the irregularities associated with the installation of the corner, a layer of plaster (putty) with a width of about 40 cm is applied to the surface. The work is performed with a spatula of the appropriate width in two steps. First putty is applied to a width of 20 cm on both sides of the corner. Then the process is repeated, but this time with a putty strip width of 40 cm.

After that, the walls will become visually even, and the corner will be hidden in the putty.

Another case is when the angle of the walls is not 90 degrees. Builders call such an angle deployed. To design a developed corner, a flexible perforated plastic tape, which bends into a corner to the desired degree. Otherwise, the puttying of the corners of walls and ceilings is carried out according to the above technology.
First, the solution is applied, then the corner is glued - leveled with the rule, after which it is puttied with a wide strip of the solution.

After the putty has dried, the surface is processed for further decoration, for example, it is sanded, primed and painted.
In the video you can see how the corners of the walls and ceilings are plastered and puttied. The work is done by a master plasterer.

So that when leveling, the junction of the planes of the walls has correct design, craftsmen often use various plaster corners. Yes, at first glance, this detail may seem quite simple to you - it is not so easy to use it. If you decide to do this, you must follow a number of rules.

This is what we will talk about in more detail in this material. Let's consider how a plaster corner is chosen, how to use it correctly.

Types of corners

It is not difficult to guess that the plaster corner today is represented by a variety different types. Now let's take a closer look at.

metal models

When a finisher gets down to work, he needs to have the right number of corner pieces on hand. And given that today in retail chains the range of such products is quite wide, it is better to decide on the model in advance - so that later there will be no unpleasant surprises.

Linings for puttying and plastering on corners, depending on the material, are usually divided into plastic and metal. Consider each of the product groups, but first - let's deal with the most popular.

Metal corners for plaster can be made of different metals:

Made of galvanized steel - these products are highly durable, at the same time they weigh quite a lot (when compared with analogues). Moreover, it is likely that this corner will rust over time - especially in those areas where the plaster layer becomes thinner. The metal there is directly exposed to moisture (from the atmosphere)
Made of aluminum - such products are very durable. They are practically not afraid of corrosion, they are very light. But there is one “but” - the mechanical parameters of this lining will be an order of magnitude worse than those of alternative options. It's just that aluminum is a soft metal - and everyone knows about it.

To prevent corrosion of the galvanized steel overlay over time, the product must be handled very carefully during installation. Try not to damage the galvanization - when mounting the corner on the wall. And it is better to do pruning with scissors for metal (it is better to refuse the grinder here).

Metal corners may vary in shape:

Usually simple corners are recognized as the most popular - that is, a strip of metal bent at ninety degrees. The thickness of such a product is only 0.4 mm. Perforation is applied to the sides of such an overlay - this is done so that the mass of the product becomes even smaller. And adhesion to the plaster mortar due to such actions significantly increases;
A stucco corner with a mesh looks a little different. Such models are selected when wet plastering is performed. The corner itself in this situation is equipped with a narrow overlay - a steel mesh is attached to its edges, the width of which is a couple of cm.

Corner plaster perforated is ideal for fixing the plane. At the same time, your finish becomes more durable - this is a fact.

Today on the market you can also choose for yourself models of corners that are combined. In this situation, an aluminum or steel corner is equipped with a special polymer mesh (glass fiber is especially popular). Such products have all the advantages of both plastic and metal models of plaster corners;
It is also nice that the cost of combined plaster overlays is slightly higher - but they will also serve you longer;
The main difficulty in working with metal overlays is that such a material is susceptible to corrosion - especially due to the effects of alkalis and acids. That is why many craftsmen advise installing them only if the finish is made with latex, acrylic or plaster.

plastic models

Consider those options which are the most used today:

Linings are standard - by design, this element is identical to the metal corner. But instead of steel or aluminum, plastic is chosen for production - a fairly high quality. Such overlays are not afraid of corrosion, so if plastering of rooms where the level of humidity is high is carried out, they should be used without fail;
The main disadvantage of a standard plastic corner is that the thickness of the material is quite large. At the same time, the plaster is not usually applied in a thick layer, it rarely happens that the layer is more than 3 mm. And this is quite enough to disguise a plastic product;
Arched corners for plaster are used in situations where it is necessary to form a joint of planes on surfaces that are curvilinear. One side of this corner is not made solid - it is segmented. Due to this, the product can always be bent, while the bending radius will be arbitrary;
In addition, you can easily find mesh corners for plastic plaster. The mesh in this case is an overlay element. These corners are used in order to be embedded in a thick plaster layer. The reliability of fixation at the same time increases many times, because the corner will be held not only on the base, but also due to the high adhesion of the mesh part and the solution;
It should be noted the model, which is not used very often. We are talking about a universal mesh corner for plaster. This is a thin strip of plastic (or even tape) - a strong mesh is enough. You can bend it to any angle you want. These overlays are used in order to form non-right angles - that is, those that are less or more than ninety degrees.

Often enough this model used when finishing the internal joint of the walls. If it were not for such an element, the work here would have to be done without an overlay at all - which is not recommended.

The main advantage of plastic plaster corners is that they are chemically inert. Often such products are laid directly into (which, moreover, has an alkaline reaction). And in general, corrosion is not terrible for polymers - in many ways this makes them very popular (even if we take into account low level strength compared to metal products).

How to use corner pads - we understand

Now let's talk about how to properly apply plaster corners (overlays). However, first things first.

Preparing to finish the corner

In order for a plaster corner made of metal or plastic to fully cope with its function (protect the joint of planes from possible damage), it must be installed correctly.

In fact, this task is not particularly difficult. But on certain moments need to pay attention:

First of all, there must be a main wall under the corner plate. To do this, you need to check the quality of the surface - if necessary, all loosened elements are removed;
Then, all walls are primed and dust-free - including the corner. First, dust is removed, then a primer is applied. This must be done in any situation - so that the plaster layer has good adhesion to the base;
In the case when the wall joint is severely damaged, before installing the plaster corner, alignment is carried out - plaster mortar will help in this work. Of course, the work time will increase due to this approach, and the finishing will take longer - but it is better to “lose” a couple of days in this way than to get a plane at an angle;
Further, plaster beacons are placed on the plane. It is necessary to focus directly on them when leveling steel or aluminum corners.

Only when all the work aimed at preparation has been completed, it is possible to proceed with the installation of the plaster lining.

We fix the corner

This is not to say that the corner on the wall is somehow difficult to install. Consider a very simple instruction:

Small slides of the solution are superimposed on the surface. 300 mm - this is exactly the value of the optimal step;
The overlay is cut to size - a knife will help you with this (if you work with plastic models). If the corner is made of metal (aluminum or steel), use metal scissors. From application circular saw it is better to refrain - corrosion processes are then necessarily activated where there was heating;
The corner is installed on the wall, it is pressed into the mortar so that the plaster penetrates the perforation. If there are mesh linings at the edges, they should be immersed in the leveling layer as deep as possible;
With the help of the level and the rule, they control the correct installation of the lining. If necessary, the position of the part is adjusted by smooth pressing.

Please note - if you have not laid enough mortar, the lining will have to be removed and a leveling compound added. The corner, in any case, must be set with the beacons on the same level. It is not necessary to “bring out” the plane with one plaster.

If the finish layer is thin - the corner can also be mounted on mechanical fasteners.

But, at the same time:

The overlay is set at an angle, alignment is made along the plane and vertically;
For fasteners, holes are drilled with a perforator;
Plastic sleeves must be hammered into the holes obtained - they are fixed with locking stainless screws;
If your wall material allows, you should not use anchors, but self-tapping screws made of stainless steel;
Keep in mind: you should not use standardized fasteners here, as if they oxidize, rust marks will probably appear - either on your plaster, or even on the finish that will be applied on top of the plaster layer.

Plane joint grouting and leveling

As soon as the mortar on which the corner piece was installed hardens - can be taken for plastering.

Here everything is done like this:

As part of the first stage, the wall is leveled - at the same time, they do not reach the corner by about 400 mm;
Then, not so far from the installed corner, a solution is placed - and by means of the rule it is smoothed out: so all the excess will be removed;
The above operations are repeated, but this time it is no longer a rule that is used, but a wide spatula or trowel;
The connecting planes are aligned - the master must make sure that during this work the plastic or metal is not exposed;
To decorate the inner corner, you can use a special spatula. Its blade has special form- therefore, both surfaces can be brought out very high quality: a regular recess will be formed between them.

Watch the video on how to fix the plaster corners. Surely, this lesson will help you gather your thoughts before work and understand how and what needs to be done here.

Now we must wait until the plaster dries - the outer layer must undergo polymerization. And then they take up the grout.

Everything looks like this:

The corner is first overwritten on one side, then on the other;
The master, when moving the grater, must ensure that it does not remove material from the edge - after all, in this situation, the occurrence of chips is not ruled out. You don't have to allow it;
A grater with a sponge is used to grout the inner corner. If there is no putty in the plans, the plaster can be corrected with ordinary sandpaper.

Results

The use of corner overlays for plastering walls today significantly facilitates the work of those owners who want to carry out repairs in an apartment or house on their own - without involving professional teams.

Yes, if you have little experience (or none at all), it’s not so easy to make a corner with high quality, so you definitely don’t need to neglect various auxiliary devices. Act - and everything will definitely work out, experience will come with time and everything will work out perfectly - right the first time!

Fastening a perforated corner to an outer corner helps not only to align the joints of the walls, but also creates protection on them from accidental damage. The perforated corner is metal element up to 3 meters in length with perforated side stripes for improved fit.

Perforated corner attachment.

To fix the paint corner, it is imperative to use a linear level, the length of which depends on the height of the corner. The fixing material can be start putty or a gypsum mixture with mineral additives that do not allow the composition to set quickly, but retain its plasticity.

As a rule, a mortar is applied to the joint of the walls with a spatula, the corner is applied to the corner and aligned with the clamp with a long linear level. The accuracy of the work is controlled along the edge of the corner, as well as along its side lines. The remains of the solution are removed with a spatula and the perforation holes are closed with them.

There are corners that have on the sides, in addition to perforation, strips of reinforcing tape, which makes the coupling of the element with the sidewalls of the corner more reliable. The technology of fastening such a corner is no different from mounting a conventional metal element.

Increased attention is paid to fixing the corner when fixing it to the slopes. If your city of residence in it has a place in the offices of many companies, however, a prudent owner should appreciate the means, so when installing the slope, you need to protect the window frame with masking tape.

The corner is installed on the starting putty or gypsum plaster and is aligned along the vertical slope and the line of the wall adjacent to the window. For this, only a level of a shorter length is used. If alignment is not done along the wall, then a depression is formed, which can make its black contribution to the interior design. It is much easier to fix the corner on the slopes of drywall, because the GKL is pre-aligned during fixation (on glue or on the frame). In this case, a minimum amount of putty is required (necessarily “start”) and there are no additional difficulties.

A more difficult task is when fixing a protective and decorative element on a plaster slope. In this case, you can use a special plaster corner, which has a mesh instead of perforation. Its fastening should be carried out directly during the plastering work, but if the plaster is completed and the corner is not exposed, then its painting variation is used.

The crookedly installed corner is dismantled and reinstalled with a preliminary trimming of the corner of the walls.

Dmitry Shekhovtsev