Sealing drywall joints is one of the steps in performing finishing works.

By creating concise or curly designs from, it is impossible to avoid multiple connections of parts and seams. It is important to take into account trends and prospects for the development of architectural, structural and design solutions when planning rooms for various purposes(residential, office, public, etc.).

Any use of drywall in construction and repair work entails an increase in the number of connecting elements: seams, junctions, mates, corners.

All of the above assumes increased requirements to docking nodes of structural elements, depending on the selected type of finish (knurling, etc.). There are certain requirements for preparing the surface from for finishing.

Joint sealing is used for the final leveling of gaps between drywall sheets, eliminates irregularities after the installation of drywall sheets and gives evenness of the drywall surface for subsequent finishing work.

Also putty gives strength weak points drywall structures. The surface is homogeneous, it is preserved attractive appearance. - one of the most important operations in the conduct of work with drywall and, non-compliance with the norms, most likely, will lead to the appearance of defects at the joints of the sheets.

If you do not carry out such processing, over time you may encounter such troubles:

Ways to putty plasterboard seams with tape

Depending on the depth and width of the joints and their locations (horizontal, vertical, corner - internal and external), various ways sealing (puttying) drywall joints, such as one-layer and two-layer puttying, using mesh for reinforcement (sickle) or paper perforated tape, perforated metal or plastic corners.

Before you start puttying the seams, you need to make sure that the drywall sheets are firmly attached to the frame.

It is necessary to prepare all the necessary tools and materials.

Tools and materials used for sealing drywall joints

• - a container (bucket) and a mixer (drill) - for preparing and stirring putty;
• - roller and cuvette - for applying a primer;
• - primer deep penetration- to improve the adhesion of putty to the base;
• - serpyanka and / or perforated tape, for reinforcing seams;
• - special putty for joints;
• - construction knife;
• - a set of spatulas for applying and leveling putty;
• - a grater with a set of grids, or sandpaper for grinding puttied surfaces.

The sequence of preparatory work

Sealing drywall joints

Edge Condition Inspection

This is the first thing that begins with the sealing of drywall joints. In the process of manufacturing various designs sheets of drywall have to be cut, which means the appearance of even rectangular edges. It is not easy to seal the joints of such edges.

For high-quality sealing of seams, it is necessary to make chamfers along the cut line. The chamfers should be about fifty millimeters wide and made at an angle of 45°. In this case, the joint will take a V-shape, the angle will be 90 °. This manipulation is mandatory, it allows you to achieve improved adhesion of putty with drywall. The same should be done if the edge of the drywall sheet differs from the factory one and has chips, cuts, or gypsum is visible.

Priming of surfaces before puttying

Before puttying, it is necessary to treat the surfaces of drywall sheets with a primer. Particular care in priming requires the location of seams, joints, junctions and corners. One of the most popular and frequently used primers for drywall is Knauf Tiefengrunt. It is designed specifically for highly absorbent surfaces.

Having primed the entire surface, you must wait complete drying, then reapply primer to the joints. By doing this carefully, you will reduce the amount of putty.

Primer Functions:

Basically, all brands of putties have similar characteristics, but some firms offer more wide range products for specific applications, a wider range of package weights and more versatile material characteristics.

What are drywall joints, how are they processed and what is the technology of work? Some recommendations, as well as applicable putties for joints.

What to do with drywall joints on the wall

One of the most popular finishing materials is plasterboard.

It is distinguished by many of its properties. Suitable for leveling walls, creating multi-level ceiling structures, manufacturing arches and furniture.

After mounting the GK-sheets, seams appear. What to do with drywall joints on the wall and how to carry out the work is described below.

When drywall joints appear on the wall

You can work with GK-sheets using one of the following methods:

• Frame installation GKL;
• Frameless method of fixing drywall to the surface.

Frame method - creating a crate from metal profiles and additional materials for sheeting. Still use wooden slats, but less often, since wood is a capricious material that requires certain conditions for work and processing.

The frameless method involves gluing sheets to the base using various adhesive mixtures and not only.

In both cases, after the installation of GK-sheets on the base, seams appear - the border between 2 sheets.

The joint must be correctly designed:

1. the gap between the sheets should be no more than 2 mm;
2. there should be a chamfer - a kind of groove along the entire border. The plasterboard sheet has a rounded edging, but if the sheet is cut, the edge is immediately cut off by a planer (milling cutter) by 45 degrees. Masters, in a hurry or because of laziness, do not create this chamfer. Then construction knife you need to make a recess at the borders of the sheets yourself.
3. The joint on the GKL should be smooth, without cracks, deformation.

The bevel plays an important role. It increases rigidity drywall surface. A properly sealed joint is a guarantee of the strength of the entire structure.

How to fix

Sealing joints on a drywall surface involves 3 steps:

1. Acquisition of materials and collection of a set of tools.
2. Preparation of the seam for reinforcement.
3. Step by step work plan.

To reinforce the joints, you will need a set of tools:

1. brush;
2. putty knife;
3. a clean container for diluting the mixture;
4. construction knife with a sharp blade.
5. Sandpaper.

From the materials you need:

1. primer;
2. reinforcing mixture;
3. reinforcing tape, corner (aluminum corner profile PU 25x25);
4. clean water at room temperature;
5. joint mix.

All tools and containers must be clean. Working with a dirty tool is difficult and does not give the expected results.

Reinforcing tape has several options:

• Serpyanka - similar to a medical bandage, it is durable due to its composition.
• Paper - manufacturer KNAUF. When wet, does not lose its properties.
• Non-woven - contains fiberglass.
• Tape with a metal insert - used to reinforce the corners of the plasterboard.

After collecting everything you need, you can begin preparatory work with the joint. It consists of several steps:

1. The seams must be chamfered and clean. With a brush, the border of the sheets is cleaned of dust, small gypsum stones are carefully removed.
2. The seams are covered with a clean brush and a primer mixture. This must be done carefully so that the primer fits well into the seam. Also handle corners drywall construction.
3. Allow time for the primer to dry.

After drying the joint, they begin the main work.

To do this, dilute the mixture for reinforcing joints according to the instructions on the package. Mostly they buy Knauf Fugen.

Next, with a medium spatula spatula thin layer put the mixture on the joint. Tape is glued on top so that it lies centered along the seam. With a clean spatula on top, it is slightly sunk into the damp putty, thereby collecting excess.

The next step is to cover the tape with the same mixture. Without waiting for drying.

The remaining putty covers the fasteners. At the same time, the heads of the self-tapping screws are "drowned" in drywall by 1 mm. All places are treated with a primer.

Self-adhesive serpentine tape is fixed to the plasterboard surface without putty. After gluing, it is covered with putty mixture.

All work done is left to dry completely.

How to seal the seams

The Knauf Uniflot mixture is used for sealing joints without reinforcing tape. Its differences:

• The strength of putty is commensurate with cement.
• She has a light weight, therefore it is used on plasterboard surfaces.
• The putty does not pass and does not absorb water.

The diluted solution is applied to the joint in one layer. If there is a gap of 2 mm between the drywall sheets, then 2 layers are applied. Work with the mixture for 25 minutes, after which it hardens.

If it is planned to hang a heavy object on the wall of GK-sheets, then the craftsmen recommend using Knauf paper tape with this putty to make the structure more durable.

Another putty mixture JS weber vetonit. It is a polymer composition that has a strong setting with a plasterboard surface.

The principle of operation is the same as with Knauf UNIFLOT. However, masters do not recommend using putty mixes without reinforcing tape.

Gluing sickle in the corners of drywall walls

The corners of the drywall construction are carefully reinforced, since a large load falls on them.

Internal corners can be deformed due to subsidence of the building.

External corners are subject to mechanical stress (impact).

Before applying the sickle to the inner corner, it is cleaned of dust, carefully treated with a primer.

Applying the mixture to reinforce the joints, glue the sickle and cover it with putty on top.

Serpyanka is used in small corners - created niches, podiums, shelves. To reinforce the inner corner from the ceiling to the floor in the room, a tape with a metal insert is used.

The outer corner is best protected by a corner perforated corner. Putty is applied to the cleaned, primed corner. They put a corner on her and “sink” it well. From above, without drying, the corner is closed with a mixture. Everything must dry. This will take no more than 10 hours.

Do you need grout joints

After the joints have dried on the drywall wall, subsequent grouting is carried out. This needs to be done:

1. The remaining pebbles from the mixture will interfere with subsequent work and, as a result, can ruin appearance rooms.
2. Grouting must be carried out in order to achieve flat surface.

Grout is done on a dry surface sandpaper or grinder. For convenience, so that all the shortcomings are visible, a lamp is used.

After the work is done, the surface remains smooth and clean.

When to start next work

After the work on reinforcing the joints, as well as their grouting, you need to clean everything well from dust, cover with a primer, and only after that start work.

The entire surface of the GK-sheets is covered with a finishing putty solution. After complete drying with sandpaper, grinder wipe the surface from small pebbles, and other defects.

Before applying a decorative coating (paint, wallpaper, decorative plaster, tile) the surface is primed again.

Master's recommendations:

1. After grouting, small cracks may appear on the drywall surface. This is due to temperature fluctuations. If cracks are found, they must be covered with a thin layer of putty for joints.
2. When the soil moves or the house subsides, cracks appear in the corners. Without fail, they are reinforced and then puttied.
3. On the packaging of putties, there is often an inscription: "Application without reinforcing tape." To achieve strength, it is worth using a tape for gypsum board joints.

After all of the above, it is clear that it is necessary to reinforce the joints with tape and putty designed for this. Grouting joints is required for a good appearance, and the corners must be reinforced corner profile and a ribbon with a metal insert.

Useful video

Using drywall to create smooth ceiling coverings is the most common way to renovate rooms in old buildings. The technology of this work is not difficult even for people who do not have much experience in repair work.

The only stage of work that causes difficulty for novice masters is grouting plasterboard ceilings. Usually for finishing ceilings use their painting, and for this the surface of the ceiling must be perfectly flat.

Even if the installation of the drywall frame is perfect, it has enough profiles installed to support the weight of the drywall, the seams between its sheets will still be noticeable. The size of the seams depends on the quality of the edges of the material and the possibility of changing the dimensions of the GKL sheets under the influence of temperature changes.

In order to get rid of the visible irregularities of the ceiling surface, the joints must be carefully putty. If you skip this stage of work when finishing the ceiling, then the seams will remain visible after painting it. In addition to the unaesthetic appearance ceiling surface joints that are not covered with a layer of putty can cause damage to drywall.

Sometimes, even after sealing the seams, on the surface of the ceiling appear cracks. Novice craftsmen do not understand why the seams on drywall are cracking. On the ceiling, as well as on another surface sheathed with drywall, when sealing the joints of the GKL, it is necessary to use a special reinforcing mesh - sickle. It will make the seams stronger, and the risk of cracking will be minimal.

Important! The use of reinforcing tape when sealing seams significantly improves the quality of work.

More experienced craftsmen believe that to help avoid the appearance of this problem can careful filling of seams with putty, as well as the implementation of their termination at a constant temperature and humidity in the room. Sealing drywall seams on the ceiling with your own hands is not a difficult task, but it requires accuracy and use quality materials. Before work, you must also stock up on the necessary tools.

Preparing for seam work

Properly selected materials for puttying and availability necessary tools, as well as the exact sequence of finishing work, become a guarantee of obtaining the expected result - a smooth and even ceiling surface.

The choice of materials for covering the seams depends primarily on what kind of ceiling finish. Therefore, before sealing the seams in drywall on the ceiling, you should decide on the choice of it final finishing. When preparing the ceiling for wallpapering, you can use an inexpensive starting putty.

Even if, after sealing the joints, small cracks appear on them, they will remain invisible under the wallpaper. If the ceiling is painted, then the putty should be High Quality, because the painted surface will make any defect in the work performed visible. In this case, you should not save on the quality of materials.

To complete this work, you will need to purchase:

• starting putty corresponding to the required quality of work;
• acrylic primer;
• mesh-"serpyanka", or masking tape with perforation. A 50 mm wide mesh is used on brick base, and for wooden houses it is better to use a 100 mm grid;
• metal corners designed to strengthen the corners (external and internal).

A set of tools is selected standard, used for any work with drywall:

• narrow and wide spatula (100 and 250 mm); When choosing a spatula, you should pay attention to the flexibility of the tool and its evenness. For processing corners, it is better to have a special spatula;
• a grater equipped with an abrasive mesh, or sandpaper in a set;
• brush and roller for applying a primer composition;
• a paint knife or a special plane for processing the edges of the plasterboard.

The procedure for sealing joints on drywall

Before you seal the seams on the plasterboard ceiling, you should make sure that all screw heads are completely recessed into the material. If protruding caps are found, they must be tightened.

Typically, manufacturers produce drywall with chamfered edges. However, when sheathing the frame, cut pieces of material on which there are no chamfers can be used. In this case, the chamfer will have to be done independently. With an ordinary construction knife, the edges of the sheet are cut at an angle of 45°, and the depth and width of the joint should be 5 mm in total.

The entire surface of the sheathing must be carefully cleaned of dust if there are burrs on the edges of the joints, they must be cut off. Depending on the degree of contamination of the surface, you can use a vacuum cleaner or a regular cloth.

On the seams cleared of dust it is necessary to apply strengthening primer. Depending on the form in which the primer was purchased, it should either be diluted with water according to the instructions, or mixed thoroughly. The primer is applied along the seam and 15 cm on both sides of it.

Now you can proceed to the final stage - seaming. Before the glass mesh with a self-adhesive layer appeared on the market, it was necessary to initially cover the joint with a putty, then drown the “sickle” in it and re-cover it with putty. Now execute this stage sealing seams is much easier.

The work is done in the following order:

• the packaging of a modern "sickle" is opened, and the roll is neatly untwisted. In the process of unwinding, the tape is pressed against the junction of the GKL. When the pasting of the joint is completed, the remaining tape is cut off;
• putty composition is diluted immediately before work. The dry mixture is diluted with water in the proportions specified in the instructions, and then thoroughly mixed until the mass becomes homogeneous. The putty composition thickens quickly, becoming unusable, so it should be kneaded in such an amount that it can be used in about half an hour;

Important! The quality of the putty composition depends on the thoroughness of mixing the mixture. Therefore, for its manufacture it is better to use a drill with a mixing nozzle.

• Initially, the recesses of the seams are completely filled with putty. In this case, the composition is applied to the joint by movements of the spatula directed across the joint, in one direction and the other. At the same time, the putty is pressed into the recess, filling it completely;
• to level the surface, a composition is applied over the seam along the joints. The putty strip on each side of the joint after its alignment should be 150 mm;
• when puttying the corners, a mesh 100 mm wide is glued on them, and the composition is leveled with a special spatula designed for internal and external corners;
• after the composition dries, the surface is leveled with sandpaper or an abrasive mesh.

Useful video

The video below will show in detail how to correctly and reliably putty plasterboard seams, which is certainly an important part of interior finishing work:

High-quality finishing of plasterboard ceilings is possible only with preliminary sealing of the gypsum board joints. Puttying the entire ceiling surface with a continuous layer does not guarantee the absence of cracks in the seams after it dries.

After the installation of drywall sheets, it does not turn out to be absolutely even and smooth surface. The fact is that the sheets are joined during installation, and these joints require additional finishing to make everything even. But it's not only that. Sealing drywall joints helps to avoid cracking in the future. Without such sealing, cracks may appear on the finish coat. Proper execution work eliminates many troubles in the future.

It looks like a wall with puttied joints

Sealing drywall seams with your own hands is carried out for a number of reasons. Only by understanding why such a procedure is needed, it will be possible to perform it correctly. Many simply mechanically carry out a series of works, without even thinking about the purpose of such actions. In fact, drywall grouting is performed for a number of reasons:

• in order to protect the finish from cracks. Sealing drywall joints helps create a uniform surface, and it is with such a base that finishing materials should work;
• to level the walls. It is clear that the GKL is already even, but often it is putty all over for future coatings. In this case, preliminary sealing of the seams is necessary;
• to hide gaps due to curved walls. Before you seal the seams on drywall, you need to make sure that the material is laid as evenly as possible. But often the sheets are installed crookedly, which causes large gaps between the joints. They need to be closed;
• in certain cases, puttying the edge prevents the penetration of moisture into the gypsum, which means that the sheets do not swell or crumble over time.

We carry out preparatory work

Before sealing the drywall joints with a solution, you need to carry out a series of preparatory work. These works include the preparation of drywall sheets, the choice of working tools and putty.

GKL with a semicircular edge is used as standard

Preparatory work on the joints is reduced to chamfering. A chamfer is needed in order to create a small indentation at the joints of the plasterboard. Putty will be placed in this recess, which will make the joint of sheets more durable and reliable.

The drywall sheet already has a factory longitudinal edge. You don't need to touch her. An edge is created with a knife only in those places where the gypsum component of the sheet is visible.

Puttying drywall seams with your own hands will require skills in creating an edge. To do this, the edge of the drywall sheet is cut with a wallpaper knife at an angle of 45 degrees, creating a recess. You can also simply chamfer with a special planer at an angle of 22 degrees. Chamfering is carried out before attaching drywall sheets to the surface. You can cut the edge with a knife already when the plasterboard is attached to the surface. The depth and width of the chamfer to be removed should be 5 mm.

You can cut the edge (chamfer) with a knife and a planer

To work, you will need the following tools:

1. Flexible spatula 8 cm wide.
2. Flexible spatula 10 cm wide.
3. Rigid spatula 20 cm wide.
4. Putty (Knauf Fugenfuller is suitable).
5. Reinforcing tape.
6. Clean bucket.
7. Brush.

Many people wonder how to cover up drywall seams? You need to resolve this issue for yourself even before the drywall seams begin to be sealed. Properly selected putty is the key to further success. Usually putty company Knauf is used. Traditionally, the cheap and easy-to-use Fugenfuller is chosen. Sometimes Uniflot takes its place. You can choose something else if the future topcoat requires it.

Seam priming and mortar mixing

It is not enough to know how to putty drywall joints, because the primer also plays an important role. A deep penetration primer is used to clean the surface as well as for better adhesion. With the help of a brush, all joints are smeared with a primer, and it doesn’t matter what edge they have (factory or home-made). The soil will serve as a link, a kind of glue, between drywall and putty. You need to wait until the primer dries completely.

The roller for priming the seams is not suitable, as it will not be able to penetrate into the gaps between the sheets of drywall.

Properly mixed putty will be the key to successful work. Fugenfuller is a popular drywall joint filler. However, not everyone chooses it because it dries quickly. Although this statement is doubtful, because you need to be able to knead the solution. First, you need to knead the solution in small portions, calculating your strength. Secondly, if everything is done correctly, then the putty will not dry out within 30-45 minutes. And this is quite enough for comfortable work.

Collected in a clean bucket required amount water (you need to look at the putty instructions) and then the finishing putty is added there. It should be poured as if it were flour. If you throw everything in a heap, then problem lumps are guaranteed. Many argue about the best way to seal the seams on drywall, without thinking about how they make this mixture.

In the process of creating a mixture for sealing joints

After the putty is carefully poured into a container of water, it is mixed with a spatula. Using a mixer will cause the mixture to harden faster. Fugenfuller needs to be mixed a little so that all the putty is wetted, and then left to swell for 5-10 minutes. After that, the putty for sealing drywall joints is thoroughly mixed with a spatula, and all lumps are broken. The final mass should look like very thick sour cream. With the finished mixture, you need to start working immediately.

Sealing technology

Drywall seams are sealed using different spatulas. As a standard, the mixture is drawn with one spatula and superimposed on another. Or she is typed on one spatula and held in her hand. With the second spatula, putty is taken from the first as needed. This scheme allows you to work faster, without being distracted by constantly collecting the solution from the bucket.

Do-it-yourself puttying of drywall joints begins with filling the void between them. Many people like to work hastily, applying sickle or paper tape to the seams, and already a layer of putty on top. Although this technology speeds up the work, it is fraught with consequences.

If, as a result, a thin-layer textured plaster, then over time it will simply crack at the seams where voids remain. Also, with this method, problems may arise when cutting wallpaper in the corners, when pressure can cause the knife to fall into the void.

The first work will need a 20-centimeter spatula. It is used, since it is necessary to seal the seams between the sheets of drywall as quickly as possible. A lot of mortar is collected on its surface to fill the voids between the joints with it. The mixture is applied across the seams with a tool, trying to drive it into the joints as much as possible.

Sealing drywall joints along the factory edge and manually made chamfer

It is necessary to completely fill the joints between the cut and the factory edge. In this case, you should not leave sagging on drywall. It must remain level. After that, you can putty all the screw heads with putty, you still need to give the solution time to dry. The putty will be drawn in a little and then even a hollow may form at the place of the seams.

This technology is used by those who want to know how to properly seal the seams in drywall. If you do not fill the voids with putty voids, but immediately apply the solution, and then the reinforcing tape, then as a result, tubercles may form at the joints. Therefore, voids are first puttied, and then paper tape or sickle is already applied.

Use of reinforcing tape

For many puttying drywall joints using perforated paper tape unacceptable. Like, it warps a lot, and the joints turn out to be crooked. To avoid this, the tape is dipped in water for a while. Then they take it out, remove excess water and glue the joints. Gluing begins with a cut seam.

To use paper tape or a special grid, everyone decides for himself. Who is comfortable and who is used to working with what. In any case, you should not immediately try to seal sections longer than 2.5 meters. This is very inconvenient and difficult.

Many are interested in the question of how to putty drywall seams with tape. Its use is a direct continuation of the above technology for filling joints with putty. When the solution dries, the seam will need to be covered again with a layer of putty. For this, a 20 cm spatula is used, on which the solution is applied with a 10 cm spatula.

The tape sits as tightly as possible to the drywall

Sealing drywall seams with reinforcing tape will help make the joints more durable. To do this, a tape is applied exactly in the center of the joint to the newly applied putty. It is pressed against the drywall with an 8 cm spatula. It is with such a spatula that it is best to squeeze out the solution from under the tape. Also, such extrusion will align the tape if it has formed a wave somewhere. For this reason, gluing drywall seams starts from the corner. The exposed putty is stretched in all directions with a wide spatula. But the puttying of the drywall joints is not yet finished.

After drying, there should be no hills

The tape is attached to the drywall, but it still needs to be covered with a layer of putty. Such a finish to the reinforcing tape. Putty is smeared with a thin layer at the joint, pasted over with tape. If everything is done correctly, then the bumps will not appear at the place of work.

How well you cope with such a task as sealing drywall joints depends on the stability of the future structure and its appearance. If the seam is processed incorrectly, then over time:

• cracks or a fine mesh of them will appear in this place;
• the service life will be greatly reduced;
• the finish coating will be damaged, and this will certainly entail additional costs Money.

And if the sealing of drywall joints is carried out according to technology and using high-quality materials, then you will never have to spend your family budget on rework final repair in the apartment.

Drywall joints can be processed in many ways. We will tell you the most popular and correct. Those that are carried out according to approved technological processes, in accordance with GOSTs, methods and building regulations. Their list is given at the end of the article.

It does not matter if you need to seal the joints of drywall, which is mounted on metal frame, or glued to flat wall. It is important to follow the process.

Conditions for the performance of work on sealing butt joints

In order to save the money, effort and time earned, several requirements must be met before starting work:

1. The surface to be treated must be cleaned.
2. The reinforcing tape in its width must correspond to the dimensions of the seam.
3. All fastener heads should be sunk into the sheet so that they do not stick out.
4. GKL on the surface, and even more so at the joints, should not have delaminations. The presence of such a flaw suggests that you need to cut off the paper at the very base and carefully clean this place with an emery cloth.
5. Check the reliability of the fastening of the sheets and the quality of the installation of the frame.
6. Create a favorable microclimate in the room:

• humidity should be normal, since under other conditions the GKL will change its linear dimensions;
• the temperature should be maintained at least +10 ° C, and this indicator must be maintained for the entire period of work and for the drying time finishing putty(V winter time temperature indicators should be within +13 - +20 ° С);
• drafts, sudden heating of the room or cooling are unacceptable during the production process.

Sealing seams with sickle

Fiberglass mesh, professionals call it serpyanka, is made with an adhesive layer. It is designed for sealing butt joints drywall sheets, gluing seams, cracks on repaired surfaces. Serpyanka well absorbs moisture. After interaction with the putty and final drying, it gives a single strong reinforced plane.

Mesh characteristics are shown in this table.

Let's consider how to seal the seams on a drywall construction with a fiberglass mesh with your own hands. It is not worth mentioning once again that the surface must be cleaned not only from dirt, but also from dust. Do not disturb the microclimate in the room. The process itself will consist of the following steps:

1. Seam stitching.
2. Joint primer.
3. Surface putty.
4. Fiberglass mesh sticker.
5. Re-spackling.
6. Grinding of butt joints.
7. Cleaning the surface from dirt and dust.

End joints for any type of seam sealing must necessarily have a chamfer. For this purpose, a special device is used - an edge planer. This tool will chamfer at an angle of 22.5 o for 2/3 of the thickness of the sheet, which is quite enough for this type of work. Using a planer is much more convenient, and the process is much faster.

It is also acceptable to use a knife in this procedure. True, he chamfers at an angle of 45 about. But this is quite enough for high-quality performance, only you need to work more carefully and take your time. It doesn't matter what you cut with - what tool you have, work with it.

Beveling on a cut of drywall should certainly be done. This will be needed so that putty can be laid in the resulting recess. This procedure will significantly strengthen the design of the partition or wall.

If you do not do this, then when puttying on the cut, you will get a tubercle, which will have to be leveled with a thicker layer of finishing putty. And that will lead to more spending. building material and higher labor costs. If the layer is thin, then during operation the seam will crack, since a violation of the technology for sealing drywall joints was initially allowed.

The slightest deviation from the technology leads to the formation of cracks on the surface of the finish and entails unforeseen costs in impressive amounts.

Experienced specialists in such circumstances say that the miser pays twice. And, unfortunately, in practice this is a very common case of violation of technology.

Joint primer

Now you should start priming the joints. For this we need special composition bearing the same name. It can be bought in specialized stores. The primer composition is well absorbed into the material, an invisible film is formed, which has excellent connecting properties, adheres surfaces. This water-soluble mixture impregnates only upper layer drywall and does not penetrate inside.

During the subsequent surface treatment, the cardboard itself will draw water from the solution or glue into itself, thereby deteriorating the adhesion of the material. And the primer layer will prevent this process, since the film does not allow moisture to pass through, does not allow dust to get on the surface to be treated, and even has antifungal components.

The layer thickness must be at least 0.03 mm, and it can be applied:

• with a regular brush;
• maklovitsa - a special brush;
• roller;
• garden sprayer.

For convenience, the solution can be poured into a cuvette. And if the volume of the used container of the primer is small, use it by dipping the brush directly there.

Manufacturers offer us three types of primer composition:

1. Phenolic mixture. It is mainly applicable to work with wood and metal. But it can also be used as the first layer of soil for a drywall construction.
2. Alkyd mixture. Not suitable for drywall. This composition causes deformation of the cardboard layer of the sheet. The paper peels off, and bubbles are obtained, which then burst, hanging on the surface in tatters. It is clear that there is no need to talk about any strength of a clean finish.
3. Acrylic (universal) mixture. Ideal for drywall, used both before and after puttying.

When choosing a primer mixture, pay attention to one of the parameters - it must be for internal works. facade mix contains harmful substances, which are prohibited for use in residential premises.

GKL, treated with a special primer mixture, lasts longer, does not lose its aesthetic appearance and properties. In addition, the putty on the primed plane lies more evenly.

Puttying seams

This type of work is required to level the surface. According to our method, we will do this twice, then the joint between the sheets will become even, smooth and with good adhesive properties.

For work, we need dry or powdered putty. It is diluted strictly according to the instructions before being applied to the surface. It is impossible to prepare the composition for future use in large volumes - it dries quickly and you will have to throw away unclaimed material, as it will become unsuitable for work.

There are some subtleties here. If you are diluting the mixture in large quantities, for example, you will process a large amount of surface and you have many workers, then using construction mixer, do not use high speeds. This method involves a lot additional air, and its excessive amount has a bad effect on the strength of the final product.

If you are diluting a small volume, then pour the dry powder into the water until islands form on the surface of the water and stir gently. The color of the putty can be beige or gray. This indicator does not affect the strength of the material.

Two spatulas are required for work:

• wide (25-30 cm),
• narrow (7-8 cm).

A layer of putty is applied to the joint with a narrow spatula in such a way that the composition can penetrate deep, you can drown it a little - press it into the seam. In this case, you should not feel sorry for the solution, but you also do not need to show fanaticism. The remains can not be removed yet, because a grid will then be glued on them. Surplus will be removed at another stage of work.

Do not forget about the places on the drywall where the screw heads are screwed in - they also need to be puttied.

Processing the joint with fiberglass mesh

After applying the putty mortar to the joint, you need to attach the tape to the seam. It is better to measure it in advance along the length, or you can do it during work, but this is when there is an assistant nearby. Serpyanka is well cut with scissors. Using a spatula, firmly press it along the entire length to the joint.

The tape must be applied strictly in the center of the seam. If one piece is over, overlap the next one and keep going.

Using a wide spatula, go over the surface you are processing again and at the same time remove excess putty. Now it takes time for the joints to dry.

Second coat of putty

The top coat can be applied to the joints when the surface is dry. To do this, you need to wait from 8 to 12 hours. The second pass will remove all the flaws that were missed earlier and make the seam stronger.

It is necessary to achieve a minimum covering layer - so that the junction cannot be determined by eye.

But if this did not work out, there is the next stage in the technology of work.

Sanding drywall joints

Grinding of the areas we need is done with ordinary sandpaper, an abrasive mesh, which are fixed on a special bar, or with a special abrasive grater. What you choose - decide for yourself.

Sandpaper is not very convenient to use, but you can stuff it on a bar - and then it will become much more convenient to work. Sandpaper during operation is constantly clogged with dust, so you have to constantly clean it. You can buy material in the store in rolls or cut into pieces. An important indicator for the acquisition this product is graininess. You can start work with P100-P180, this is a larger option, and finish with P 220-P280.

The abrasive mesh has a perforated structure and passes through the holes most of dust. It is mounted on special holders, the change of grids can be done at your discretion. In stores, already cut into pieces is sold. It is convenient to work with such a tool, however, it costs a little more than sandpaper.

Think not only about the material, but also about yourself. The work you want to do now with your hands is very dusty. Therefore, you will need:

• respirator;
• gloves;
• special glasses;
• protective clothing.

The room must have good lighting, otherwise you will not be able to see the defects that need to be fixed.

If there are no practical skills in this process, first try sanding the joint on small area. This is done in a circular motion. Capture a small area at the same time and control the pressure. If scratches appear on the surface, change the material number to a smaller one or reduce the pressure. After the work has been done, all dust and dirt will need to be removed.

By working on this technology, you will get an alternation of layers: putty, sickle, putty. This combination is made according to the approved technology and gives good effect. The junction is flush with the surface of the sheet and is difficult to determine by touch.

Sealing drywall joints with perforated paper tape

Now let's look at how to seal the butt joints on the GKL using perforated paper tape. In principle, the technology is the same as described above. Having a clean surface and observing the permissible microclimate in the room, you have to perform the following steps:

1. Expand the seams.
2. Prime joints.
3. Spatulate them.
4. Attach perforated paper tape.
5. Apply a top coat of putty.
6. Sand the butt joints.
7. Clean the surface from dirt and dust.

The execution of the first, second and third points is carried out according to the same technology as described in the "" section, so the information indicated there is useful for this type of joint processing. But at the fourth point we will stop and talk about this material in details.

Processing the joint with perforated paper tape

This material is a strip of paper on which there are:

• micro-holes, it is they who do not allow the tape to swell and bubble;
• marking line in the middle, which serves for convenience and simplification of the workflow, especially for finishing internal corners premises.

Perforated paper tape for drywall prevents cracking at the joints of the sheets. Her physicochemical characteristics identical to drywall, it reacts to any changes in temperature and humidity in the same way as it does. This means that deformation in the seams treated with this material is excluded.

The paper tape is presented to the consumer in rolls, width 52 mm, sold in lengths of 50, 76 and 153 m. pure material which is made from cellulose. It is made of extra strong paper reinforced with fiberglass in the longitudinal and transverse directions. Its surface is slightly rough to the touch. This helps to better bond with putty.

The internal structure with the presence of microscopic holes does not allow air inclusions to form during operation. If you tear off a small piece of paper tape, you can see how long the fibers are. This means that it holds a high load at break.

True, it is worth considering that the tape should fit snugly enough on the putty layer to the seam, not have bends and bubbles. Therefore, the putty solution should not be thick at all. You can also avoid the appearance of bubbles by using a micro-perforated tape.

According to the technology, a tape that has been pre-moistened in water should be sculpted at the joints with cut edges. The process is more laborious than with sickle, the installation method differs from the mentioned technology and has some nuances.

The tape itself is not self-adhesive, which means it is applied to the putty layer. Pre-soak the measured pieces in boiling water for five minutes. Take one out and squeeze out excess water. To do this, the material must be skipped between large and index fingers any hand, thereby removing excess moisture from her.

Adjust the tape to the center of the joint and, in a taut position, lightly press into the putty. Adjacent ends must overlap. Gently pass the tape along the tape with a spatula - from the center to both ends alternately.

You need to apply some pressure for proper bonding, but do not overdo it so as not to squeeze a layer of putty out from under the tape. under her middle part a layer of 1.5-2 mm should remain, under the edges - 0.8 mm. Now you can use a spatula to remove excess mortar along the longitudinal edges.

Then you need to wait until the joints dry, putty them a second time and leave again for 8-12 hours. Do not forget - the necessary microclimate must be observed in the room.

After the seams are dry, you need to sand their surface. How to do this and with what, is described in the section "", in the subparagraph "".

The need to perform these works

The work described above is, of course, laborious, and they have to spend a certain amount family budget. But nothing can be done. After all, puttying drywall joints is as necessary as metallic profile and quality installation.

Forgetting to putty the seam or deciding to save on it preparatory stage money, one day you will find a small crack in your apartment, which will increase in size. No matter how rigidly the frame is installed and the sheets are not securely fastened, under the influence of vibrations, unforeseen shocks, the joints of the plasterboard will “play”. Which will certainly lead to their cracking and loss of dried putty, since the owner did not use a reinforcing tape.

Violation of any of existing technologies leads to poor-quality performance of work, and subsequently - a shorter service life of all materials involved. Which is fraught with additional costs of money and time.