How to fix an aluminum corner. How to glue a plastic corner to a wall and to a PVC window slope: technological features of the process. If the walls are curved

So you have finished finishing the walls with drywall. But left alone important detail- corners. In this article, we will figure out how to make the corners of drywall walls even and how to fix the corner to drywall. And also which corners to use is better, easier and cheaper.

Types of corners and why they are needed

Perforated drywall corners not only allow you to beautifully seal the corner joint, but also give even greater structural strength, preventing even slight movements and vibrations from the plasterboard sheets.

On sale you can find 4 types of corners. There are perforated corners for right angles and even arched models. So:

Perforated metal corner

This is the most famous and used model. The thin perforated metal construction has a rib to provide rigidity. But, despite this, the configuration of the corner is often violated during transportation, which makes it impossible to use it to create perfectly even corners. Therefore, the store always needs to check their quality.

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Plastic corners

The material is the main difference from the previous version. This results in low strength and low resistance to shape change. Advantages - not afraid of water and moisture, corrosion is not terrible. A big plus is the low price.

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arched corners

Everything is clear from the name - it has the ability to bend well. This is the main advantage over other types. The material from which it is made - flexible plastic - gives it such an opportunity.

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Mesh corners

They are usually used where it is necessary to protect the corner from mechanical damage and give additional rigidity. Often such places are the outer corners of buildings. But we use them in the apartment. This will be useful if the corners are rather uneven and of dubious strength.

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We examined the main corners of drywall, which is better - you decide. You should choose based on where the perforated corner will be installed on drywall and what goal will be pursued: will it be a significant strengthening of the corner or just a design idea. Also pay attention to the price.

Important: if you just need to fasten the sheets at an angle of 90 degrees, you need not a corner, but a connector. This frame element does not apply to corners.

How to attach a perforated corner to drywall?

For work, we need some tools and materials:

The corner itself
Putty. It is she who will ensure reliable fastening of the corner to drywall ( the best composition for this job - Vetonit, it is reliable and easy to use)
A primer with which we will strengthen the GKL sheets, and then we will carry out the final processing
Scissors for working with metal (if you are going to fasten not plastic corner on drywall, and metal)
Brush for priming surfaces
Two spatulas: one wide, the other narrow (wide is more convenient to smooth out irregularities on the surface, and narrow to apply the composition and distribute it)
Bar for grinding. It will help to make perfectly even corners, removing all irregularities

Now let's figure out in detail how to fix the corner on drywall:

We carry out the primer of each sheet of the corner, drawing a strip of about 30 cm. After that, we take measurements in order to know how much the length of the corner is required. A distance of 20-30 mm to the floor can be left without a corner, since everything will be closed with a plinth anyway;
According to the results of measurements, we cut a corner. Having made cuts, the metal corner can be easily and accurately broken;
With a narrow spatula, apply putty to the joint itself. The layer thickness is small (about 3-4 mm);
We press the corner so that the putty penetrates through the perforation outward;
Apply a thicker layer of putty on top;
We level everything with a wide spatula and remove excesses, while holding the tool at an angle to the sheet and pressing it a little;
We grind the corner with a bar;
Then we apply a second coat of primer. The width of the strips should be 20-30 cm. This method allows you to remove a sharp transition between the layer and the plasterboard wall;
Now we finally align the angle: first with a spatula, and then, already on dry putty, with a bar;
Before plastering the rest of the wall, apply an additional coat of primer to the joint.

Corner for drywall 25x25 mm galvanized - one of the types of material that is used to level parts of the walls. As you know, drywall is popular in construction, it is easy to work with. However, prefabricated ones have problem areas - corners, which are most often subject to mechanical stress. This is where they come to the rescue different kinds existing corners.

Existing species drywall corners

They perform a protective function of parts of the walls and will help to build even corners. Knowing their classification, you can choose a suitable instance.

The most common product options are:

Metal perforated corner

This view is a thin sample from a profile with perforation and a rigid edge along the edge. Basically, there are 2 types of similar corners for drywall:

straight;
arched.

These representatives have many subspecies. The corners are not glued, they are practically “fitted” onto the structure and fixed with putty or.

The straight perforated corner is used for processing the inside and outside of the corners.

It is a V-shaped profile with many holes - perforations.

Variants of metal perforated corner for drywall

Actually, with their help, a high-quality connection with the processed corners occurs, and the top located at internal corners- inside, and for the outside - outside, is a guide for the spatula. Excess air also escapes through the holes. Straight punch angles are plastic, aluminum, galvanized. The latter is tougher than others, and the wide one can generally be used as a plaster beacon.

plastic corner

This sample is more resistant to moisture than from a profile, but resistance to mechanical damage below. Of the advantages, one can note the low price and the absence of corrosion of the material. There is also a type of plastic corner, for example, AquaBead, which has a special paper with glue applied in the inside. Putty for fixing is not required here, it is enough to moisten the adhesive surface with water and simply glue the corner to the right place.

Arched

Apply various Decoration Materials, such as plaster, wallpaper, panels and others. But in order to preserve the transition points between the planes, an arched corner is used, which has great potential. Arched corners are divided into the following types:

Installed under plaster, perforated. They have separate petals on one side of the corner, allowing you to place a sufficient strip on any arched bend. There are plastic and from the profile;
Decorative, gluing of which occurs on the plaster.

Mesh Products

Similar elements are used in places that require the strengthening of corners and protection from damage. Plaster mesh corners are designed for internal and external corners. They can be either plastic or metal. The choice will be influenced by the shape and material of the plane for finishing.

Mounting corners on drywall using corners

When starting to install a corner on drywall, you need to have tools and material on hand.

Required material

the selected type of corner will need to be bought with some margin;
by using ;
it is best to buy Vetonit putty, which is of high quality.

Tools

metal scissors will help to correctly and quickly cut the necessary parts;
brush, which is required for applying the primer;
wide and narrow spatulas will be needed for;
the grinding block will remove all the irregularities on the plane, while the angle will be perfectly even.

This is how the mounted corners on drywall look like

When starting installation, it is necessary to familiarize yourself with the sequence of aligning the corners with putty so as not to damage this fragile material.

Stages of work

First, the plane must be thoroughly cleaned and treated with a primer. You need to proceed to the next stage only after it has completely dried.
Measurements are taken and cut off desired length corners. They are applied to drywall as a fitting.
For further work, you will need a non-woven tape, a serpentine mesh for internal corners, one of the types of perforated corners: plastic, adhesive, rounded or made of metal profile or on paper.
Before you make a choice. For the formation of internal and external corners, it is better to buy a dry gypsum mix. It has a reasonable price good quality and will be able to securely fasten the elements to the structure.
Putty is prepared in compliance with all stages: poured, poured, stirred, allowed to settle, kneaded again.
When working with external corners, you need to remember that they are most often subjected to mechanical stress, it is better to fix metal samples, in some cases having a rounded shape.
Check the evenness of the end.
Putty is applied to the treated area with smooth movements. Not allowing the composition to dry out, you need to fix the corner with pressure, check the accuracy with a level, if necessary, you can knock with a rubber mallet.
Sometimes the corner is attached to the drywall with a stapler or glued with glue, and then covered with putty.
On installed element another layer of the mixture is applied and now it is aligned with the general plane of the wall.
Applying the second coat of putty
After thorough drying, the sloping corner is polished.
Installing the corners inside the structure looks similar, even a little easier. The adjacent sides, the gap between the corners are carefully smeared with a spatula, and the excess mixture is removed. On a dried polished surface having desired shape. You can buy and, only put it on raw putty.
check the fastening on the drywall of the corner, then with the help of the next layer hide the irregularities.
After thorough drying, the surface is finished sandpaper or a polished bar, thus forming a perfect angle.
To facilitate the leveling process, so-called beacons are used, attached to the surface with a plaster solution, here you can do without fasteners.
Separately, I would like to mention a semicircular plastic corner used in rooms with the maximum possible impact on the corners. It is made of flexible plastic and has no sharp corner, but semicircular. Its price is quite acceptable, and its durability is beyond doubt. It differs in some features at the installation stage, namely, cutting the end by 1.5-2 cm with an angle of 45 ͦ. A corner is pressed into the applied initial putty, fixed with a stapler, the edges are processed with a mixture.

The video of arranging the corners will help you see how the drywall parts are reinforced, and will also allow you to select and buy the necessary elements.

Finishing inside and outside corners will not seem difficult with the right approach and the necessary training. The main thing is that during installation they should be requiring minimal finishing.

Finishing the corners in the apartment should be resorted to in cases where small children grow up in the family or animals are kept. Since stucco finishing mixtures do not have great strength, they are destroyed by light impact on them.

Especially often external corners are destroyed. Dents often appear on the corners pasted over with wallpaper, notches appear on the painted corners.

To protect the corners, the use of special devices and techniques that protect the corners from destruction is required.

We note right away that the process of finishing the corners in an apartment is a difficult and crucial stage. flat surface much easier to get than to align the corners. Next, consider ways to protect the corners of the walls in the apartment and house from damage.

When do you need to trim corners?

Finishing the corners in the apartment is advisable in cases of installation in the corners of rectangular furniture. Aligning the corners eliminates distortions, allows you to harmoniously place rectangular furniture.

With large distortions, you should not resort to leveling the corners, since when leveling, the usable area of \u200b\u200bthe room decreases, but it is possible to beat with a stone.

Which material is best for corner protection

In any room, corners are divided into internal and external.
And if it is difficult to get to the inner corners, then the outer corners suffer more often, and not only from the careless carrying of heavy household appliances or furniture.
Animals scratch the corners, and they often block the way for children.
For finishing corners, plastic, metal, polystyrene foam, wooden corners, special galvanized metal profiles, and decorative stone are most often used.
Plastic corners have an extensive range of colors. They have increased softness, varying degrees of roughness.

To the question: “How to finish the corners of the walls in the apartment?”, The article below will best answer.

Consider all the materials and fixtures used to protect the corners of the walls.
Materials mean the use of drywall, and as fixtures, the use of metal, wooden, polystyrene foam corners, PVC corners.

Aligning corners is one of the most difficult stages of finishing a room, requiring theoretical knowledge and extensive practical experience.

The protection of the corners of the walls is carried out by installing special devices. Corners made of different materials are most often used as protection for wall corners.

Most often, PVC corners are installed as corner protection.

Plastic corners should be installed after all finishing work has been completed.

Plastic corners are installed on the walls using a mounting adhesive for plastic products.

Plastic corners are produced with a length of 2.5 m. The width of the corners is different, from narrow to wide.

To choose the right corners in width, you should measure the curvature of the corner.

With large curvature, it is preferable to choose corners of greater width.

Narrow corners are used at almost flat corners

How to fix plastic corners on the corners of the walls?

Option 1

Option 2

The most common and inexpensive way, is the use of plastic corners of various sizes and colors. when choosing, pay attention to the correct angle, the fit to the wall depends on it.

Types and sizes of PVC corners

These options for wall corner protection are also suitable when using metal profile corners.

If you want to not only protect the corners, but also perform decoration corners in the apartment, use wooden or polystyrene corners.

Styrofoam corners
Expanded polystyrene is a non-combustible material.

Styrofoam corners do not absorb moisture, dirt does not stick to them. Polystyrene corners can be used in rooms with any temperature conditions.

The surface of polystyrene corners can be painted. The profile of the corners is created by pressing and is available in various shapes.

Finishing the outer corners in the apartment with the help of polystyrene foam corners is justified in those rooms where there is little traffic for residents.

Decorative corners made of expanded polystyrene allow not only to protect the corners, but also to perform a decorative design of the corners.

Fastening is possible both on special glue and on ordinary acrylic sealant.

Wooden corners
The main advantages of wooden corners are:

attractive appearance;
environmental friendliness;
the possibility of creating a carving or decoration.

Wooden corners are an indispensable material for decorating corners in an apartment.
Not the best option use wooden corners in rooms with high humidity;

Stone as a decorative element
IN Lately it became fashionable to use stone in interior decoration premises. The decorative design with stone looks especially organic when protecting external corners.

The use of stone is especially appropriate when the outer corners have large deviations from the geometric shape. There is no need to level walls and corners.

Let's note right away! It is better to use a decorative stone. It is also lighter than natural. And having a smooth surface makes maintenance much easier.

The stone is fixed with a special mortar or tile adhesive.

Step 1

For laying decorative stone surface should be prepared
remove dirt, dust, old coatings and
If the surface is very dry, or you work at a temperature of +30C and above, it must be moistened.
This is necessary for better penetration of the adhesive into the depth of the prepared surface.

Step 2
Glue is diluted according to the attached instructions in quantities that you can use during work. Properties of glue remain within 2 hours.

Step 3
Glue is best prepared in plastic container using a drill with a mixer attachment. After mixing, the adhesive is kept for several minutes and thoroughly mixed.

Step 4
On the back side of the stone, the solution is applied with a spatula, the edges of the tile are coated with the solution. Several mortar cakes are applied to the surface of the wall and a stone is applied.

Step 5
The stone is pressed against the surface with force, it is checked by a plumb line and the level of the correctness of its installation.

Step 6
After laying the stone in three rows, stop work. The adhesive is fully cured after two hours. This will allow you to continue laying the next 3 rows.

Failure to comply with the requirements of step 6 will lead to the collapse of the structure under its own weight.

Drywall for finishing corners
The use of plasterboard sheets GKL allows you to align any, the most crooked corners.
There are two ways to install drywall sheets: frameless, frame.

Method 1
Frameless installation of drywall sheets is used on both internal and external corners:

surface preparation is carried out;
a drywall sheet is applied to the surface and marked;
on the other side of the corner, a sheet is also applied and marked;
blanks are cut with a knife and cuts are made with a planer at the mating corners of drywall;
prepared blanks of drywall sheets are again applied to the corner and adjusted;
mounting foam is applied to the sheets;
both blanks are applied to the wall and pressed;
sheets are removed, leaving traces of mounting foam on the wall;
polyurethane foam is reapplied to the sheets;
the foam should be allowed to dry a little and attach the sheets in place;
it remains to correct the angle using wooden lath or building level.

Method 2
The frame method is recommended for use in cases of significant surface curvature.
This method is more laborious, but it can significantly improve sound and heat insulation:

it is necessary to measure the deviation of the angle;
install the frame using galvanized metal profiles, securing them with dowels, self-tapping screws;
installed on the frame drywall sheet and fastened with self-tapping screws;
the resulting surface is puttied, polished;
the corner is protected by a perforated mesh.

Puttying the corners of a two-level ceiling begins with the installation of perforated corners

If you do not live in a round tower without windows and doors, then your housing must have corners - internal and external. And during the repair, you have to decide how to finish them so that they turn out to be perfectly even and protected from mechanical influences.
If the joint between the walls and the ceiling or floor is easy to hide with a plinth / cornice, then the puttying of the inner corners between the walls and the outer ones, formed by window and door slopes, niches and ledges, must be carried out with high quality. To simplify this task, special perforated corners are used, the purpose and types of which you will learn from this article.

Perforated corners are often referred to as paint corners or plaster corners, as they are used during puttying/plastering to reinforce corners before decorative finishing.
They serve two purposes:

They reinforce the corners, especially the outer ones, giving them additional strength and resistance to damage. It's no secret that protruding corners are more often flat surfaces are exposed to chips, scratches and other mechanical influences, for example, when carrying large furniture through a doorway.
They allow you to easily and quickly form a joint of perpendicular surfaces, make it even and clear. This, in turn, facilitates subsequent finishing: it is easier to glue wallpaper or tiles in even, not “littered” corners, the result is better.

What are the corners?

Materials for manufacturing

First of all, these products differ in the type of raw materials from which they are made.
There are three main types:

From galvanized steel. Robust, reliable, corrosion resistant thanks to zinc coating applied on all sides.
However, prolonged use in humid environments can cause rust spots.

Aluminum. Lightweight, durable, corrosion resistant. But they are not resistant to close proximity to copper and some other substances.

PVC (from polyvinyl chloride). The price of these products is the lowest, and they have no less advantages than metal corners.
First of all, it is absolute inertness to moisture and aggressive chemical substances- plastic corners do not corrode, do not rot, do not deform.

For reference. Every year, PVC products are becoming more and more popular. There are various modifications of plastic perforated corners on sale, including those combined with a serpentine tape and with an adhesive applied to the inner surface, which facilitates installation.

Configurations

The junction line of two surfaces is not always straight. In the manufacture of arches (see How to beautifully decorate a plasterboard arch), curvilinear multilevel ceilings from drywall and other structures, it can take very intricate forms. Such corners simply cannot be protected with the products shown above.
For them, special arched corners are produced. Most often, the raw material for their manufacture is plastic polyvinyl chloride. An arched corner for puttying differs from a straight one in that one of its sides is cut into “petals” that allow it to be bent in any direction with any radius of curvature.

Curvilinear corners are much more difficult to give a clear shape when finishing, especially if you do not have a certain skill in puttying and plastering. Arched corners allow you to do this without any problems.

How to install perforated corners

We will tell you in detail about how to finish the corners with your own hands using the described products.
Let's take one of the most complex options, when it is necessary to “bring out” the joints of window or door openings with walls, during the plastering of which the workers did not bother themselves with maintaining the level.

Note. When finishing the corners formed by drywall sheets, such problems usually do not arise: their surface is even and smooth, and the sheets themselves, as a rule, are attached to a frame that has been leveled. In such cases, it is most reasonable to use PVC corners with an adhesive inner surface.

So, puttying the corners of walls and slopes begins with the installation of corners, which is carried out in the following sequence:

Measure the length of each seam and cut the corners to size. Plastic are cut with ordinary scissors or a paint knife, metal - with metal scissors;

To avoid thickening due to overlapping corners, their outer side is cut at an angle of 45 degrees;
Then, a building level is applied to each side of the slope to determine the degree of its evenness and "overcrowding" in one direction or another. You can make notes on the wall to know where to apply more putty, where less;
cook required amount solution and apply it to the slope on both sides, but not in a continuous layer, but at intervals, focusing on the marks made earlier;
Attach the corner to the slope over the putty slaps and lightly press into it so that a small part is squeezed out through the holes;
After removing the squeezed out solution with a spatula, use a level to check the verticality or horizontal position of the corner. Woo him right position, pressing harder where it is required;
Further, the instruction requires you to wait a while for the putty to seize and fix the corner. After that, you can putty the corner, filling it with mortar empty seats and leveling adjacent surfaces.

Advice. If the corners and walls are almost even, you can immediately use finishing putty. If they require serious correction, it is better to start with the starting one, and apply the finishing one with a second layer.

As in the case of a straight plane, the ideal smoothness of the corner is achieved by grinding (see How to grind walls after puttying and how to do it right). In the process of grinding, it is advisable to smooth the corner itself a little, round it off - this will facilitate subsequent finishing and make it more resistant to mechanical damage.

Conclusion

Professional finishers easily cope with the task of leveling corners and without any accessories. But they also often use perforated corners precisely in order to give the protruding joints greater strength. How they do it, you can see in the video in this article. And try to repeat during the repair. It is not difficult.

When the doors and windows are installed, you need to finish the slopes, as a rule, this is the final stage. To hide small roughness and give a complete aesthetic look, many use ready-made corners. How to cut and glue a corner of plastic, cork or MDF? Below are detailed recommendations for their installation.

Let's start with the most important - why is it necessary? What role do the corners play - only decorative or do they have more serious functions? We will not argue with the fact that if you frame the slopes of doors or windows with special decorative elements that fit perfectly into the design of the room, then the interior will immediately change for the better.

Corners protect slopes from damage

But besides this, they also perform a very important protective function. Sooner or later, you have to carry bulky things through the opening, which is fraught with damage to corners, and you can just accidentally hit outer corner and damage it. There can be a lot of situations, most importantly, the result is the same - a damaged surface and, accordingly, a look. In addition, as practice shows, most often the wallpaper begins to peel off in these places. So it is best to protect the outer corner of the slope with decorative element which will also transform the interior.

Corners are not only protection, but also a neat aesthetic appearance

Plastic, wooden or MDF - which one to choose?

Convinced that the installation of corners is not just a whim, but a necessity, we will study the construction market in order to make right choice. These products are divided into types depending on the material from which they are made. So, the corner can be plastic, wooden, bamboo, made of cork or MDF. Absolutely each type has its pros and cons, we will consider them in more detail.

To trim the corner, use a hacksaw with fine teeth.

How to glue

Finally, we got to the main question, how to stick the corners on the slopes. However, before proceeding directly to fixing, it is necessary to carry out, so to speak, a fitting. After making sure that everything is trimmed correctly, you can move on. Apply to inner part corner, at the junction of the sides, the adhesive solution in increments of approximately 10 cm. At this stage indispensable assistant will mounting gun. After that, quickly press the product to the surface and fix it in this position with masking tape. You should start with a horizontal slope, and then proceed to the side slopes. We remove excess sealant from the surface of the walls with a damp cloth and let it dry thoroughly. The tape can only be removed after 24 hours.

Video: we fix the corners on the window slopes

Thus, plastic corners can be placed on the slopes of a window or door. As you can see, there is nothing complicated in this process.

Video: how to cut and glue corners on door slopes

Having dealt with what such products are made of, what are their features and having decided on the choice, you should learn how to install the corners on the slopes. detailed instructions below.