How to properly seal seams on drywall for a long time. We seal the seams between sheets of drywall ourselves. How to seal seams in drywall

Using drywall to create smooth ceiling coverings is the most common method of renovating premises 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 craftsmen is sealing plasterboard seams on the ceiling. Usually, painting is used to finish the ceiling, and for this, the surface of the ceiling must be perfectly flat.

Even if the installation of the frame under drywall is done perfectly, it contains sufficient quantity profiles to support the weight of 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 size of gypsum board sheets under the influence of temperature changes.

In order to get rid of visible unevenness of the ceiling surface, the joints must be carefully putty. If you skip this stage of work when finishing the ceiling, the seams will remain visible after painting. Besides 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, cracks appear on the ceiling surface. cracks. Novice craftsmen do not understand why seams on drywall crack. On the ceiling, as well as on other surfaces covered with plasterboard, when sealing the joints of gypsum boards, it is necessary to use a special reinforcing mesh - "serpyanka". It will make the seams stronger, and the risk of cracks will be minimal.

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

More experienced professionals believe that they can help avoid this problem carefully filling the seams with putty, as well as sealing them at 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 care and the use of high-quality materials. Before work, you must also stock up on the necessary tools.

Preparing for seam sealing work

Correctly selected materials for putty 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 seams depends primarily on the type of ceiling finishing. Therefore, before sealing the seams in the plasterboard on the ceiling, you should decide on the choice of it final finishing. When preparing the ceiling for wallpapering, you can use inexpensive starting putty.

Even if small cracks appear on them after sealing the joints, 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 visible any defect in the work performed. In this case, you should not skimp on the quality of materials.

To complete this work you will need to purchase:

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

A standard set of tools is selected, 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. To handle corners, it is better to have a special spatula;
• a grater equipped with an abrasive mesh, or sandpaper in the set;
• brush and roller for applying primer;
• a painting knife or a special plane for processing the edges of gypsum boards.

The procedure for sealing seams on drywall

Before sealing the seams on a plasterboard ceiling, you should make sure that everything screw heads are completely recessed in the material. If protruding caps are found, they need to be tightened.

Manufacturers typically make drywall with beveled edges. However, when covering the frame, cut pieces of material that do not have chamfers can be used. In this case, you will have to do the chamfer yourself. The edges of the sheet are trimmed with a regular construction knife. at an angle of 45°, and the depth and width of the joint should ultimately be 5 mm.

The entire surface of the sheathing, before sealing the seams on the plasterboard on the ceiling, must be carefully cleared of dust, if there are burrs at the edges of the joints, they definitely need to be cut off. Depending on the degree of contamination of the surface, you can use a vacuum cleaner or a regular rag.

It is necessary to apply to seams that are free of dust. 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 - sealing seams. Before fiberglass mesh with a self-adhesive layer appeared on sale, it was necessary to initially cover the joint with putty, then drown the “serpyanka” in it and cover it again with putty. Now performing this stage of sealing seams is much easier.

The work is performed in the following order:

• The packaging of a modern “serpyanka” is opened and the roll is carefully unrolled. During the unwinding process, the tape is pressed onto the joint of the gypsum board. When gluing the joint is completed, the remaining tape is cut off;
• The 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 quickly thickens, becoming unsuitable for use, so it should be mixed in such an amount that it can be used in about half an hour;

Important! The quality of the putty composition depends on how thoroughly the mixture is mixed. Therefore, to make it, it is better to use a drill with a mixing attachment.

• Initially, the grooves of the seams are completely filled with putty. In this case, the composition is applied to the joint by moving a spatula directed across the joint, in one direction or the other. The putty is pressed inside the recess, filling it completely;
• To level the surface, a compound is applied over the seam along the joints. The strip of putty on each side of the joint after leveling it should be 150 mm;
• when puttingtying corners, a 100 mm wide mesh is glued onto them, and the composition is leveled with a special spatula designed for internal and external corners;
• after the composition has dried, the surface is leveled using sandpaper or an abrasive mesh.

Useful video

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

High-quality finishing of plasterboard ceilings is only possible 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.

Drywall is quite in demand today construction material, because with its help you can create almost any design and shape. It is especially advantageous because it is quite easy and quick to install. Some difficulties can only be caused by sealing the seams between sheets of this material. But still, this procedure is not too complicated, it is quite accessible to do it yourself without the involvement of professionals. The main thing you need to pay attention to is compliance with the work technology, because mistakes made will inevitably lead to the appearance of cracks at the joints.

Necessary conditions for performing work

Before you start sealing the joints between the sheets, you need to comply with a certain temperature regime and humidity conditions. The temperature in the room where repairs are being carried out should not be below 10 degrees. And all wet work must be completed by this time.

An important condition is compliance constant temperature indoors after sealing joints. It is also necessary to avoid possible drafts during work and until the putty has dried.

Advice. Before sealing joints, it is advisable to make sure that all sheets of material are rigidly fastened to the base, otherwise the layer of putty at the seam will quickly collapse. If necessary, it is better to tighten the heads of the screws securing the drywall so that they do not protrude on the surface.

How to seal seams: choosing a tool and putty

To seal seams at the joints of sheets, it is necessary to prepare the following tools and materials:

• spatula - one familiar to the hand with a flexible blade, or two - narrow and wide;
• reinforcing mesh - can be replaced with ordinary paper tape;
• edge plane or drywall knife;
• putty.

Required Tools

It matters right choice putties for sealing joints. Many people use this type of work finishing putty, which is not always true. Here everything depends on the further finishing of the walls and ceiling, what exactly this surface is being prepared for - for painting or. A putty specifically designed for sealing joints is best, especially if you plan to paint the walls or ceiling. If the surface will be covered with wallpaper in the future, you can use either the finishing or starting wallpaper.

Attention! You should not save on reinforcing the seams between plasterboard slabs. Joints sealed without the use of special reinforcing mesh or tape may subsequently crack.

How to seal joints in drywall with your own hands

First, you need to clean the joints from dust with a slightly damp cloth or using a vacuum cleaner. The plasterboard slabs themselves may have a special thinning along the edge, which is filled with putty and facilitates the process of leveling the surface. If there is no thinning on the edge, the edges of the sheets of material must be cut with a plane or knife at an angle of 45 degrees. Then this place can be primed so that the putty adheres better to the surface of the material and allowed to dry.

First, treat the edge of the drywall

The seam sealing process itself must be performed in the following sequence:

Advice. If the first time it was not possible to lay the reinforcing tape evenly, it is better not to correct it, but to completely remove it and do everything again.

Sealing the seams of drywall sheets at the corners

Corner gaps at the junction of plates are sealed slightly differently than ordinary seams between sheets of material. When filling them with putty mixture you must:

• first apply a little putty to both surfaces, leveling alternately on both sides;
• folding the reinforcement tape in half, lay it along the corner seam, fixing it with pressure and removing excess putty mixture;

Working with a fillet weld

• after the putty mixture has dried, sand the treated surface to remove any unevenness with coarse sandpaper;
• Apply a thin final layer of putty on top with a slightly wider coverage of the surface and carefully level it to a uniform structure.

If the length of the seams for sealing exceeds 3 m, it is better to divide them into sections for work, performing each separately. By doing this, you can get neater joints. And to quickly understand how to properly seal seams in drywall, you can watch a video on this topic that will help you visualize all the stages of this work.

Installation of reinforcing tape

As you can see, the process of sealing drywall seams does not present any particular difficulties. You can easily handle this work yourself. But if you have doubts about your abilities, then it is better, of course, to turn to the help of professionals or at least get advice from those who have already done such work with their own hands.

Sealing drywall seams: video

Sealing drywall seams with your own hands: photo

October 22, 2016
Specialization: master in construction plasterboard structures, finishing works and styling floor coverings. Installation of door and window units, finishing of facades, installation of electrical, plumbing and heating - I can give detailed advice on all types of work.

Today I will tell you how to seal drywall seams with your own hands - this process It is not complicated, but any violation of technology leads to disastrous results. You need to thoroughly understand the work before you begin, this is the only way you can be sure that the finish will be reliable and durable. For simplicity, I have divided all the work into 3 stages, you just need to follow all the recommendations below.

Workflow Description

Let's begin to understand the specific actions that need to be performed in order for the result of the work to be the best. It is important to do everything in the right sequence and not to rush - rushing is unacceptable, especially if you have little experience.

Moreover, all problems in the form of cracks most often appear precisely because of haste, although the quality of materials is of great importance.

Stage one - preliminary activities and purchasing everything you need

No serious work is done without preliminary preparation. Sealing gypsum board joints is no exception; in this case, preparation is of fundamental importance. First of all, you need to figure out how to join plasterboard sheets.

Very often I am asked the question, is it necessary to leave a gap between the sheets? There is a lot of information on the Internet, but it is often contradictory and ambiguous; I have researched hundreds in my time square meters walls and ceilings, so I can be guided own experience and give advice from practice, and not from articles and reviews.

So, between the sheets you need to leave a small gap of 1-2 mm, this allows you to avoid surface deformation when the building elements move; in the worst case, your putty will crack, but the sheets will remain intact.

You also need to immediately clarify how to join plasterboard sheets at the end and cut ends of the material. Here you should maintain a gap of 2 mm and additionally prepare the connection for putty, but I’ll talk about this a little later.

Now let’s look at what needs to be purchased to carry out the work; the list of materials and tools is small, so understanding it won’t be difficult:

Materials	Description
Putty composition	First of all, you need to figure out how to putty the drywall joints. Personally, I use a proven composition from the Knauf brand called “Fugen”, it is ideal for sealing joints on gypsum boards and using a sickle mesh, but it can be used to putty completely on surfaces, that is, the mixture will definitely not be wasted. The advantage is the absence of shrinkage and high resistance to cracks; the price for a bag weighing 25 kg is approximately 400-450 rubles
Serpyanka mesh	With its help, we will strengthen all joints and significantly increase their resistance to cracking. The mesh is most often sold in two widths: 45-50 and 100 mm, I use the first type in buildings made of brick and concrete, and the second in houses made of wood, since it “walks” more and needs to be strengthened more thoroughly. I recommend using self-adhesive serpyanka, it is much more convenient to use, a roll 90 meters long costs about 100 rubles
Primer	The primer allows you to strengthen the base and improve the adhesion of the putty to the surface; in addition, it creates an additional barrier to moisture penetration, which prevents the finish from peeling off in the future. I use acrylic strengthening compounds; a container of 5 liters of ready-to-use primer will cost you 200-300 rubles
Spatulas	It is impossible to apply a primer without a good spatula; for sealing joints it is best to use a wide version of 250-350 mm, and to apply the mixture and distribute it you need a narrow one hundred millimeter spatula. When choosing, be sure to check whether the tool is level; I usually go through 5-6 products until I find something normal, especially when it comes to inexpensive spatulas
Additional tool	This should include all other necessary equipment: from construction knife for cutting chamfers to a brush or roller for applying primer and a screwdriver for tightening screws. The easiest way to prepare the mixture is with a drill with a mixer attachment; wide, capacious containers are well suited for the work, but, in extreme cases, you can get by with an ordinary bucket

The putty should be produced no more than 3-4 months ago, in addition, buy it only where it is stored in a heated warehouse. Violation of storage conditions reduces the quality of the composition, and very significantly.

Stage two - preparatory activities

If everything you need is at hand and the drywall is fixed to the frame or glued to the surface (by the way, you can glue it with the same “Fugen”), then you can begin the preparatory work.

The workflow looks like this:

• First of all, it is worth cleaning the surface from dust; if there are burrs or burrs at the joints, then they should be carefully cut off with a construction tool; there should be no protrusions or other flaws. You can wipe it with an ordinary rag, most often there is little dust, but if the walls have been standing for some time, then they definitely need to be cleaned, especially since it is not difficult and will not take much time and effort;
• Checking screw heads - another one important stage, which for some reason many people skip, as a result, later, when putting putty, the spatula bounces and you have to get dirty in the mixture and tighten the fasteners. But everything can be made simpler: run your hand over the fastening points, if somewhere the screw protrudes above the surface, you will feel it. The cap must be recessed below the level of the drywall using a screwdriver or screwdriver;

• The factory edges of the sheets do not need to be processed in any way, but if you have straight joints end sides or cut elements, they must be trimmed. A chamfer is made at the connection at an angle of 45 degrees, its width and depth should ultimately be 5 mm, cutting is done using a regular construction knife. To make it clearer to you how to cut seams, below is a photo of the chamfer cutting process;

• Before sealing the seams, it is necessary to apply a strengthening primer to the surface. Everything is very simple here: if you have a concentrate, you need to dilute it with water in the proportions prescribed in the instructions, and if ready-made composition, then it needs to be mixed well, after which it can be applied. The treated areas are clearly visible on the drywall, so you can clearly control the process - the seams are primed 15 cm on both sides of the joint.

Stage three - sealing the seams

Now we will figure out how to properly seal the seams, there is also nothing complicated here, the main thing is to prepare the surface well and use high-quality materials. The workflow looks like this:

• As I said above, the seams need to be puttied with tape, and if earlier it was necessary to apply the composition and embed the serpyanka into it, then nowadays everything is much simpler. The fiberglass mesh has a self-adhesive layer, so you just need to carefully open it and, gradually unscrewing it, press it at the junction of the sheets. At this point, the consideration of how to glue serpyanka can be considered complete - when the joint is glued, the material is cut off with a construction knife;

• Before you putty the joints, you need to prepare the composition. To do this, take a container into which a certain amount of water is poured and the composition is poured; the instructions on the package will tell you all the proportions. Next, you need to stir the ingredients until a uniform mass is obtained; it is better to use a drill, since with it the quality of the mixture will be much higher, and it will be easier for you to carry out the work; the putty should have the consistency of thick sour cream;

• Let's figure out how to seal the joints; to do this, you need to apply a small amount of putty on a wide spatula; the easiest way to do this is with a narrow spatula. First of all, you need to fill the seam between the sheets, everything is simple: with movements across the joint you need to cover the recess, pressing the mass into it. This is the primary stage, the purpose of which is to fill all cavities with a composition for maximum strength;
• Now let's look at how to putty the seams correctly; the composition is leveled along the joints so that the seam recess is completely filled. That is why we need a spatula with a width of more than 200 mm. As for direct joints with a cut chamfer, in order to level the plane, the composition is applied in a wide strip - 150 mm in each direction, this will level the plane;

• You also need to tell us how to putty the corners. To strengthen them, it is best to glue a 100 mm wide serpyanka mesh; it helps prevent cracking in these difficult areas. In order not to have to worry about drawing straight lines, the easiest way is to purchase a special angled spatula; it is available for both external and external internal corners, with its help you can achieve ideal results when working with minimal costs time and effort;

Prepare no more than 5 liters of the mixture at a time, as it begins to set after only 30 minutes, and you will have to throw away the putty if you do not have time to use it up.

• After the surface has dried, it must be leveled using a special sanding block and sandpaper or abrasive mesh. Here it is important to make the surface as even as possible; if after finishing sanding you find flaws, you can repair them and level the surface again. Other works follow, but this is a topic for a separate review.

We figured out how and with what to seal the seams on drywall, everything is very simple if you know the technology and use high-quality materials and handy tool. You just need to repeat all the steps to complete the job yourself.

When a drywall structure is erected, there is a length of work left, such as putty to seal the drywall seams. In this task they act harmoniously and carefully. Having studied the correctness, every owner will cope with the task. Problem with cracks or seams on finished design from gypsum board - this is a popular problem. Therefore, the construction market offers separate mixtures that will help implement. The main thing is to strictly follow the puttying procedure, the technology of which is used by all puttyers.

Grouting joints on drywall

The puttying procedure is best carried out taking into account the nuances that can adversely affect the surface of the putty. Features:

• Before sealing the seams, make sure that there are no drafts in the room. If you putty in a draft, the coating may subsequently crack or not be firmly fixed to the wall or ceiling;
• cracks after sealing joints appear if the puttying was performed at too low a temperature. It must be at least 10 degrees;
• cracks may appear on the surface if the foundation of the building settles. Under pressure, putty seams crack;
• cracks may appear due to sudden temperature changes;

  Grouting cracks in drywall

• seams and cracks between them appear due to the fact that it was carried out incorrectly.

In any case, all these problems can be solved, the main thing is to choose quality material, and also study the sequence of work.

Types of putty

On the modern construction market there are many options for dry and ready-mixed mixtures that can be used for puttying. Deciding which one to buy is not difficult. The main thing is to study the characteristics and features of each option. You should pay attention to the following putty mixtures:

1. "Knauf" "Uniflot";
2. "Knauf" "Fügenfüller".

Ready putty for drywall

These two mixtures are popular among putty masters, as well as among owners who decided to putty seams and cracks with their own hands.

Knauf

Knauf putty mixture is a frequently purchased material for sealing drywall joints. The main thing when using it is to correctly calculate the amount of dry Knauf mixture so that it is enough for the entire surface.

Peculiarities

• "Knauf" must be used within thirty minutes after mixing;
• the ready-made Knauf solution applied to the wall dries completely after 24 hours;
• Knauf putty has no odor, therefore, during the renovation, the residents of the house or apartment do not have to move.

Important nuances

• In order for the putty to adhere well to the surface, you must first;
• seams in drywall must be dry. This is the only way to seal the seam efficiently and for many years.
• When using this putty, it is not necessary to use serpyanka.

Knauf fugenfuller

Knauf fugenfuller mixture is also popular among people doing renovations. This putty contains components that are water-repellent. Thereby this material can be used in rooms with high humidity levels.

• use fugenfüller in conjunction with. This allows you to reliably and efficiently fill joints on drywall;
• mixing and surface application technology putties Knauf Fügenfüller is no different from the standard one. It also needs to be applied to a dry, dust-free surface. The sealed seam will be securely fixed if you wait enough time before applying the finishing coat.

Fugen putty is used to reinforce joints. Fugen HYDRO is suitable for moisture-resistant plasterboard

It is difficult to answer unequivocally which better putty. Each mixture presented on the shelves of construction stores is worthy of attention. And every owner has his own views on renovation work and materials. The main thing is to think about what exactly you want to get from the material before starting puttying. And also, analyze in which room the renovation is being done, this will help you choose suitable option.

Sequence of work

Those people who seal seams and cracks in drywall need to know in what order they need to work. The process is divided into several stages, such as:

Surface preparation

Before starting work on filling seams and joints on gypsum plasterboard, it is necessary to prepare the surface. To do this, clean the coating from dust and dirt. This can be done with a rag or by walking over the surface of the seams.

Preparing the surface for putty

Primer

It is necessary to prime the seam. The primer mixture will help protect the surface from moisture, fungal growths, and rotting. The mixture is applied thin layer onto the seam surface. One layer is enough to ensure desired effect.

Primer of drywall joints

Laying putty into the seam

In the place where the seam or crack between the sheets is immersed ready mixture putties. Since the layer will be quite thick, you need to wait time for it to dry completely. Therefore, you should mix the putty only so that there is enough of it for laying in the seams.

Laying putty into the seam

It is better to mix the rest of the mixture immediately before filling the surface itself, because the solution must be used within 30 minutes after mixing. The video shows the process of putting putty into the seam.

First layer

The surface of the seam is puttied with a layer of approximately 2-3 millimeters. To do this, you will need two spatulas, different in diameter.

• use a smaller spatula to scoop up the mixture, then transfer it in an even layer onto a spatula with a larger diameter;
• then the mixture is transferred with smooth movements to the surface on which the seams are sealed.

putty plasterboard wall

Important nuance

It is impossible to apply a perfectly even layer of the mixture to the surface, so you shouldn’t complicate your life and do unnecessary work.

In any case, after drying, the putty will be rubbed down; it is this process that will ensure a perfectly smooth surface.

Grout

When the putty material has hardened on the seams, its surface must be rubbed down. This will give the plane evenness and aesthetics. To work, you will need two types of sandpaper (with small stones and with large ones). First, coarse sandpaper is used to sand down the large protruding sections.

Grouting seams with sandpaper

Afterwards, you need to use fine sandpaper to remove small irregularities from the coating.

Second layer

The top (finishing) layer of joint putty must be done especially carefully. For good result you need to go over the entire surface again to give the structure a completed look. The grouting process is no different from the first. The main thing is to walk across the surface slowly, so as not to damage the integrity of the coating.

Finishing layer putties

Each stage of puttying joints on a plasterboard surface must be completed. In fact, there is nothing difficult in the process of creating a smooth, even surface without cracks and seams. The main thing is not to disturb the sequence of actions and work slowly, precisely. Every owner can cope with the task.

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Drywall is a universal building material that has many unique advantages. It allows you to bring extraordinary ideas to life with your own hands. design solutions and design any shapes - from oval to polygon. It cuts easily without special effort mounted. The sheets are absolutely environmentally friendly and are capable of creating excellent sound and thermal insulation. It does not matter what condition the original walls and ceilings are in, or how smooth their surfaces are. But how to seal the seam between the sheets? We will talk about this in this article.

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General information about drywall

Only one plasterboard sheet has such a size that it covers more than two square meters, covering all defects and irregularities. When installing load-bearing structures between the base and the finished surface a space is formed sufficient for laying thermal or sound insulation. Any type of material can be applied to drywall finishing: paint, wallpaper, decorative plaster.

But once it's twisted last screw, the problem arises of how to properly and with what to seal the seams in drywall. This is worth worrying about, otherwise over time:

• cracks form at the joints of the sheets;
• the service life of the finished structure will be significantly reduced;
• the finishing coating will deteriorate, and this will lead to additional financial costs.

As a result, if you don’t ask the pressing question in a timely manner, instead of an exclusive element of the main decor of the room, you can get an unaesthetic “bunion”.

It happens that seams form on their own if the frame is not rigid enough. The mounting profiles are deformed under the weight of the gypsum boards, and the edges of the attached sheets follow their outlines. Another factor is loss linear dimensions structures as a result of sudden temperature changes. Microscopic shifts will lead to the formation of cracks.

To avoid this, during the installation process a gap of 1–2 mm is provided between the gypsum boards. In the worst case, the putty will crack, but the sheets themselves will remain intact. And it doesn’t matter if the drywall is installed on metal frame, or glued to flat wall. When developing instructions, global manufacturers recommend using technologies based on GOSTs and building codes.

Mesh and other materials and tools to seal sheet joints

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Proper preparation of surfaces for sealing

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First you need to check whether all the joints of the sheets are securely attached to supporting frame and whether the heads of the screws are sticking out. When puttying, the spatula will bounce on them, you will have to get dirty in the mixture, recessing the fasteners below the level of the sheet. Drywall, and especially the joints, should not have paper peeling; they must be cut off under the base and cleaned with emery cloth. If burrs and burrs are found, they are carefully removed with a construction knife.

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With the same tool, at the joints of straight ends and cut out elements, where the gypsum part of the sheet is visible, the so-called. jointing - chamfer with an angle of 45 degrees, width and depth up to 5 mm. It will make the seams much stronger, because it will also be filled with putty. An edge plane significantly speeds up the application of chamfers. The factory edges of the sheets do not require additional processing. Next, the dust and dirt generated during the installation process are cleaned. This is done with a vacuum cleaner or an ordinary dry cloth.

To improve adhesion, special primers are used. Butt seams are processed with a brush or roller 15 cm on the sides of the joint. The soil layer prevents the process of destruction of drywall, because it protects it from dust, moisture and has antifungal components.

Preparation of putty solution for gypsum joints

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When working with dry putty, it becomes possible to select the thickness of the solution. The optimal consistency for application is considered to be one in which the cone from the mixer on the surface does not fall off or spread. Then the finished composition reliably sticks to the spatula and adheres perfectly to both the wall and the ceiling.

Place in a specially prepared container according to the instructions. required amount dry putty, fill it with water and stir until smooth. If dust is generated, you need to take care of protective equipment. It is advisable to prepare no more than 5 liters of the mixture at a time, since its so-called. The pot life is only 30–40 minutes.

Cover the seams with putty mixture

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The technology for grouting gypsum joints is simple, and following it gives excellent result. To cover, a portion of putty is transferred to a working spatula using a trowel and applied in thin strokes across the gap, trying to fill its entire depth. Large thickness on the surface – required condition, because excess putty mixture will not allow it to dry out too much. If the length of the joint is significant, then it is convenient to work by dividing it into small areas. The heads of all self-tapping screws must be puttied with strokes in a crosswise direction.

To level the seam and prevent the formation of cracks, the so-called. bandaging - reinforcement tapes made of fiberglass or special paper are attached. Depending on the presence of an adhesive layer on the surface, they are used:

• If the tape already has a self-adhesive layer, then before covering the drywall seams, it must be unpacked and, gradually unscrewing, pasted along all the joints.
• If a self-adhesive layer is not provided, then, after the solution has already been applied, the tape should be recessed as deeply as possible into its thickness. The paper perforated tape deserves attention here. Paper and drywall are related materials and work well together.

To rub the putty to obtain a flat, even surface, use a wide spatula. Corner elements are designed using special devices – metal corners, corner-forming tapes, etc. After 8–12 hours of drying, you can apply the next layer of putty - a covering one, which will smooth out all the defects identified during the first pass and make the seam stronger.

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On the ceiling, sealing seams presents a certain inconvenience, since the master has to constantly keep his head thrown back. You will have to prepare the putty mixture a little thicker, otherwise it will flow off the spatula, and you will have to press harder with the tool itself in order to press the mixture well into the gap on the ceiling. But when priming, you should not press the roller too hard on the surface of the drywall, so as not to peel off its paper component.

Sanding drywall seams

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When the putty is completely dry, the seams are sanded with an abrasive mesh or sandpaper. The goal here is to ensure that no defects are noticeable. Quality can be controlled by illuminating the sanding areas with a spotlight. With its help, the smallest irregularities, depressions and bulges are revealed. If everything was done correctly, it will work out absolutely smooth surface. It is advisable to protect it from overdrying, hypothermia and waterlogging in the first three days after completion of work.

We close the gypsum joints with our own hands (video)

The video at the end of this article will help you better understand the topic.