Range of works on reinforcing sealing of drywall joints with sickle tape and perforated paper tape. Sealing seams between sheets of plasterboard How to properly seal seams in plasterboard with serpyanka

There is no doubt that plasterboard is a very popular material used for interior decoration. But it is not the end result of such work; there will also be a decorative layer. This means that the surface must be carefully prepared. Special attention Requires sealing of plasterboard seams. Much attention is paid to this stage great importance, initially everything needs to be done correctly.

When starting any work, it is better to prepare everything in advance. You need to pay attention to the tools minimum set of which is:

A set of spatulas - it is better to choose three main ones: wide, medium and narrow. The first one will do the least amount of work, but it is very convenient for smoothing out seams.
If you wish, you can add a falcon - a special device for working with putty. It is a flat plate with a handle. It is convenient to take the solution from its surface. Although, a wide spatula will perfectly fill its role.
Level.
Drill with mixer attachment.
Brush and .
Block and sandpaper.
Construction knife.

Tools for sealing drywall joints

We must not forget about the materials, of which there must be the required quantity:

Two types of putty compounds:
Starting. They will be used to seal the drywall seams.
Finishing. This mixture will not be used to seal drywall joints. It is needed to apply a control layer that will make the surface perfectly smooth.
Primer mixture. It is better to prefer acrylic.
Special tape - mesh (serpyanka). It will be used to seal the joints of the gypsum boards. And it is needed so that the putty does not cause cracks in the future.
We must not forget that there are also corner seams. Therefore, it is better to have special perforated elements. And also reinforcing tape for corners.

Only by putting everything together can we say that the time has come to do the work yourself. The sealing of drywall joints should not be interrupted due to the absence of something.

Advice! When choosing a putty, they focus on the final decorative coating. So, you can choose a cheaper dry mixture for wallpaper. In any case, it is better to give preference to gypsum-based putty. This is a reliable composition that is well suited for such work.

Working with seams

Sealing drywall seams has its own characteristics. To do everything correctly with your own hands, observe the following conditions:

Complied with optimal performance for work, which are indicated by the manufacturer on the putty packaging.
Drafts must not be allowed to occur.
Plasterboard slabs must be checked for reliability of fastening to the wall (profile). Any “walking” of the sheet will lead to the destruction of the layer of putty mixture, even when applying tape (mesh).

Now the puttying of drywall joints begins, divided into several stages.

Joining

This process is the processing of the edges of the material. The goal of the event is to obtain a surface that will be as suitable for work as possible. A construction knife is used.

Where two sheets of drywall meet, remove all excess (cardboard scraps, broken areas).
They begin to cut the chamfer. Do this at an angle of 40-45 degrees. That is, the joints of the plates should resemble one well-known symbol - a “tick”. It is more convenient to do this before fastening. Although, there is nothing to be done after.

On a note! There is gypsum board on sale, the edges of which are already processed at the required angle.

Primer

It is believed that priming is optional, but this is not entirely true. Yes, gypsum board has sufficient adhesive properties that will hold the putty layer and the subsequent decorative layer. But why take the risk? The cost of such compositions is low, they are applied quickly.

It would be correct to choose a mixture based on acrylic. It has good penetrating properties and dries quickly.

If you plan to paint the surface, then priming is a must.

Caulking seams

Sealing drywall joints begins with preparing a dry mixture. It is diluted with water and stirred well. After letting it stand for a while, the procedure is repeated. They prepare a small amount - only for an hour of work.

Attention! Serpyanka tape can be used in the work, and there is also paper reinforcing tape for drywall. They are similar in their parameters, but the latter is used with increased requirements for the resulting seam. For convenience, choose self-adhesive products.

The process technology is as follows:

To make it easier to work with joints, you can take a small container and put a little putty into it. So, it will work faster and more conveniently.
So, take the mixture with a medium spatula; you need to literally hold it on the tip. And smoothly smear it into the seam.
It is necessary to ensure that the solution completely occupies the volume of the joint.
Now cut the tape, which is glued directly to the seam. It should go down the middle.
The serpyanka is pressed a little. Next, apply another layer along the entire joint. Thus, the tape is immersed in the solution and becomes flush with the surface.
Everything is thoroughly smeared. Check the level.
When the layer dries, use sandpaper.

On a note! Working with reinforcing paper products is somewhat different. It's cut right away the right size and pour boiling water over it. Then apply a layer of mortar to the seam. After waiting for it to dry, it is sanded. Then wring out the tape and apply PVA glue to the seam. When gluing the tape to the joint, it is immediately lubricated with the same glue. The surface is smoothed with a spatula. The seam is very thin and strong. The whole process can be easily done with your own hands.

There is another way, it is similar to the one already given. But to seal the joints, you will need a little skill in handling the tool. It goes like this:

The solution is quickly spread with a medium spatula. At the same time, without smoothing or removing excess.
Then take a wide tool and place it under acute angle- and pass along the surface from bottom to top.
It would be correct to press down on him.
It turns out that the putty fills the empty areas and forms a smooth surface onto which the reinforcing product is already glued.

Corners are sealed in a similar way.

The result will be a surface that will remain covered with a finishing layer of putty. If everything is done correctly, there will be no cracks. In any case, the main thing is to do everything carefully and painstakingly, especially if such work has not been done with your own hands before.

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. The problem of cracks or seams in a finished gypsum plasterboard structure 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 high-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:

"Knauf" "Uniflot";
"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;
applied to the wall ready solution"Knauf" 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. Thanks to this, this material can be used in rooms with high levels of humidity.

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 construction stores, 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 achieve the 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 off; it is this process that will ensure ideal flat 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.

Sealing drywall seams - a pressing problem interior decoration premises. This material widely used for leveling the surface of walls and ceilings, as well as creating suspended ceilings and partitions, but inaccurate joints of sheets can affect the appearance of the finish. Only knowledge of the principles and rules of preparation for finishing allows you to give the room the desired attractiveness.

Why seal seams?

The joints of drywall sheets are a problem area. Difficulties may arise during installation:

The ends may crumble and break if mechanical influences.
The edges of the sheets at the junction are subject to deformation (bend).
When temperature changes, it changes its width, which leads to the appearance of cracks in the finish and swelling of the edges of the sheet.
The unsealed gap allows moisture to accumulate, causing staining and peeling of the finish, as well as the formation of mold and mildew.
Inaccuracies in the joint make the surface of walls and ceilings uneven.

Thus, the lack of proper sealing of the gaps between the sheets of drywall leads to damage to the finishing coating, gradual destruction of the material itself, and deterioration of its appearance. It is important to properly seal joints when preparing the surface for painting.

Sealing drywall joints includes several requirements:

Correct installation of drywall. Plays a primary role exact location profiles and frame rigidity. The joint must be in the middle of the U-shaped profile area (i.e., the edges must rest on a rigid platform), and the sheathing must have sufficient stability. Otherwise, the edges of the sheet will be deformed, and the seam will diverge due to vibrations of the coating.
Reliability of drywall fastening. The seam will diverge due to insufficiently strong fastening of the sheets to the frame profiles.
Alignment accuracy. Any steps at the joint worsen the condition and quality of the seam.
Width. The gap at the joint should not exceed 7-10 mm. A wide seam is more difficult to seal.
Presence of chamfer. It is necessary to increase the area in the joining zone and improve adhesion. Standard sheets with high-quality factory bevel. Do-it-yourself finishing is necessary after cutting drywall.

These requirements oblige the seal to be carried out reliably and efficiently. Without it, it is impossible to ensure an attractive appearance and durability. plasterboard construction.

Necessary materials

Sealing drywall seams can be done using the following materials:

Paper tape. It is a reinforcing strip made of high-strength paper with fiber additives. The tape has a longitudinal groove to ensure an even bend when finishing corners. To increase the reliability of the primer, perforated versions are available. Well-known brands of paper reinforcing tapes are Knauf, Sheetrock, NextBuild.
Serpyanka. This is a self-adhesive tape in the form of a mesh of synthetic threads. Its main advantage is ease of use. Disadvantages - insufficient strength, tensile elongation, tendency to cracking. Serpyanka is used mainly for longitudinal seams.
putty. Two types of putty are used - starting and finishing. The first type is necessary to fill the gap, and the second to align the joint. The most famous is gypsum putty, sold in the form of a dry mixture. In particular, high-quality material is manufactured by Knauf. Modifications of Uniflot have polymer additives that make it possible to increase the moisture resistance of seams. Knauf Fugen putties are manufactured specifically for drywall.
Primer. Primer suitable for drywall deep penetration acrylic type. It is usually a white or colorless liquid that can be applied in a thin layer with a brush or roller. Quality primers Knauf produces - Tiefengrunt (for preparation for painting, wallpapering), Betokontakt (under tiles). You can also use other materials - Ceresit 117, Universal.

Required Tools

To carry out DIY work, the following devices are used:

Planer-rasp (roughing plane). Designed for leveling and cleaning the edges of sheets. For drywall, peeling and edging tools are used. The first option is a metal block with handles that has a grater underneath. The second type is special knives that allow you to cut a chamfer at the desired angle.
Spatulas. For embedding you need a wide, narrow, and also an angled spatula. It is advisable to have a tool with a metal and rubber blade. Wide spatulas have sizes of 45, 60 and 80 cm, and narrow spatulas - 15 and 25 cm. Best quality The tools from Kraftool, Ansa, Armero, Sheetrock, Storch are different.
Abrasive tool. For manual processing For sealed seams, an abrasive block, a block fixed to a special device, and a grater with a telescopic handle are used. The last option is suitable for ceilings. The most common tool for finishing - sandpaper. For primary rough processing, you need coarse-grained paper with numbers in the range of 20-200, and for final processing, fine-grained grades with numbers of 250-2000 are needed.

In addition to the basic devices, additional and monitoring tools will be required. Paint brushes are needed for priming different widths. And you can correct edge defects sharp knife. Quality control is necessary building level.

How to Caulk Drywall Joints: Workflow

Sealing drywall joints includes the following steps:

Preparation. The work begins with a thorough cleaning working area remove dust and dirt with a brush. Burrs are removed with a knife.
Joining seams. When joining factory sheets, it is not required. The cut ones must be chamfered at an angle of 45 degrees. The chamfer size (width and depth) is 3-5 mm. It is better to use a plane, but you can also remove the chamfer with a knife, using extreme caution.
Primer. The composition should have a concentration convenient for application. If necessary, the mixture is diluted according to the attached instructions. The primer is applied paint brush thin layer. Carefully coat the entire seam, as well as the surface of the sheet at a distance of 12-16 cm from the edge. To speed up the work, you can use a brush or narrow paint roller.
Filling the seam with putty. After the primer has hardened, the putty mixture is pressed into the gap with a narrow spatula (preferably rubber). We must strive to completely fill the joints.
Sticker of tape or serpyanka. Reinforcing tape is glued to the filled seam. Perforated or serpyanka is pressed into the still uncured putty solution. If a solid paper tape is used, then a layer of glue is applied over the putty. PVC can be used. The tape is glued over the seam. The width is selected so that it covers the gap by 3-5 mm. The recommended length of one piece of tape is no more than 3 m.
Sealing with putty. After all layers of the seal have hardened, the work area is leveled with putty. The solution is applied with a wide spatula and carefully leveled.
Final sanding of the dried joint with emery cloth. Final processing is carried out by finishing sanding using sandpaper or a sanding tool. As a rule, manual sanding with emery cloth is used in several stages. First, it is produced with coarse sandpaper No. 50-80. Cleaning is carried out in small sections, movement is carried out in one direction - from top to bottom. Next, the seal is sanded with fine-grained sandpaper No. 300-400 until the unevenness is completely eliminated. The seam should be completely level with the surface of the wall or ceiling. Sanding is done using gentle circular movements, starting from the edge of the area and moving towards the center of the joint.

Sealing the seam with reinforcing putty without mesh or tape

Currently, special putties are produced that allow seams to be sealed without additional reinforcement, that is, without the use of tape or sickle. This putty itself is capable of performing a reinforcing function due to reinforcing additives. Among such materials, products under the Semin brand are especially noteworthy.

Sealing drywall seams using reinforcing putty is done in the following order:

Cleaning and unstitching.
Primer. It is applied in a similar way to the described method, using similar mixtures.
Putty. Apply similarly to other putty mixtures using a spatula. Application is carried out in 2 layers, with the second layer applied after the previous one has completely dried. Upper layer carefully leveled.
Grinding.

This sealing technology requires choosing a good putty. Its features are indicated on the packaging, and the name contains a reference to the fact that it is specifically intended for sealing drywall seams. The main advantage is that no tape is required and the finishing is simplified. The disadvantage is the increased price.

The nuances of sealing seams at corners

When sealing sheet joints in corners, certain subtleties are taken into account:

Internal corner. The seam in it is sealed using paper reinforcing tape or sickle tape. The technology is very similar to sealing joints on a surface. Putty is done with a spatula on both sides. First, the mortar is applied along the entire length of the seam along one wall. Then, the tool changes direction and a similar operation is carried out along adjacent wall. A tape is applied to the putty and folded in half.
External corner . To finish it, a plastic (PVC) or metal (most often aluminum) corner is used. It has perforations, which allows it to be securely secured with putty mixture. To increase strength, the corner can be additionally secured with self-tapping screws.

When finishing corners, it is better to putty using a corner spatula. This tool allows you to ensure an even, right angle.

Drywall is widely used in finishing works. The problem is recognized as the presence of seams between the sheets. Proper sealing gives the surface an attractive appearance and ensures the finish’s resistance to operating conditions. You can do the sealing yourself, but to do this you need to know how to choose required material and carry out work taking into account the recommendations of specialists.

One of the most common building materials Plasterboard sheets are rightfully used for finishing the room. But many workers are interested in properly sealing drywall seams. Properly hiding the joints between the sheets will give the surface a smooth and aesthetic appearance. The main advantages of drywall are the speed of installation and the absence of excess moisture during operation. This material allows you to create buildings of any complexity and design. Smooth curves can be achieved by working with this material.

The main disadvantage that manifests itself in the work is the elimination of drywall joints.

If you do not seal the joints correctly, after a few years cracks will appear in the area of the seams. In view of the above, a number of questions arise:

What seam sealing technology will ensure durability?
Which tool should I use?
How to seal drywall seams?

Work order

Puttying the joints between sheets of drywall is carried out after the assembly of the structure, partition or wall is completed. The key to a successful result is reliable tool and quality material.

It is important to remember that puttying joints of the structure must take place at a temperature environment no more than ten degrees if the air humidity is above sixty percent.

When mixing putty using a mixer, use minimum speed. High speeds ensure that a large amount of air enters the structure. Undoubtedly, this significantly increases the growth of the resulting solution, but reduces its strength characteristics.

Sealing seams on drywall does not limit workers in choosing containers for mixing

When using a mixer when mixing putty, select the minimum speed, this way you will maintain the strength of the solution

solution. But the best option there will be a plastic bucket or construction trough. Plastic containers are the best to clean.

Sealing seams on drywall is done with spatulas different forms and sizes. The minimum permissible tool width is 100 millimeters. For a larger work area, it is more effective to use wider ones - 350 millimeters.

Grouting drywall joints requires the use of grit sandpaper small size or a sanding mesh. The sanding mesh is easy to use, but its cost is much higher than sandpaper. You will also need a construction or stationery knife.

Auxiliary materials

List of related building materials:

deep penetration primer;
putty for sealing gypsum board joints;

You should not skimp on the quality of materials. Even a master with extensive finishing experience will not be able to do a high-quality job using poor components.

The Knauf company has proven itself well in the modern construction market. Finishing the seams between plasterboard sheets It will be best to use the products of this company. The company has developed a technology for using gypsum board sheets and has in its assortment good auxiliary materials for work.

When purchasing materials, stick to the ones you know. good brands. Even a professional cannot do a good job with low-quality products

A distinctive feature of high-quality mixtures is the content of polymers.

There is a wide range of equally high-quality auxiliary products, which are in no way inferior to Knauf. When choosing materials, it is important to consider that additional components must be from the same manufacturer as the gypsum board sheets. The sealing of gypsum board joints on the ceiling is done with the same materials.

Stages of work execution

In order to learn how to properly seal seams on drywall, you need to read step by step instructions, which tells in detail about caulking seams. Sealing drywall seams requires a lot of perseverance and patience.

First step

Work begins with cleaning the surfaces of the joints. Remove the remaining solution using a spatula, and collect dust with a vacuum cleaner. It is recommended to work with a spatula at an angle of no more than thirty degrees. Moving smoothly along the surface of the joints, remove all irregularities. Screw in the screws if their heads protrude. By drowning them by one millimeter, there will be no need to apply more solution. Wipe off dust with a damp cloth.

Drywall is available with factory and cut edges. The first does not need processing, but the second needs to be chamfered.

Second step

In order to effectively remove a chamfer from the end of a sheet, it is provided special tool- edge plane. It will allow you to cut a chamfer at an angle of twenty-two and a half degrees. It will not be possible to create the required chamfer using a construction knife. The putty will adhere better if the chamfer is made with a plane.

Third step: what material to seal the seams on drywall

It is necessary to apply a primer to the joints. Next, you should prime the surface using a roller or a wide fluted brush. However, the roller would be better suited for rubbing in the primer solution rather than using a brush.

It takes time for the primer solution to dry completely. The optimal drying period is twenty-four hours.

Using the included instructions, you can prepare a special putty mixture High Quality. There is no need to retreat and improvise. If you are too lazy to prepare the mixture with your own hands, you can purchase ready-made material. They are produced in gray and beige shades. Color does not affect the quality of the material. The consistency of the solution should resemble thick sour cream.

Fourth step

Apply the putty evenly with a spatula. A larger width will allow you to maintain a uniform layer thickness. At the same time, the caps of the screws are closed.

When applying tape, use a special reinforcing tape, do not use paper - it gets wet and does not allow air to pass through, forming bubbles after drying

Fifth step

How to finally seal the seams on drywall? One of the final procedures will be the application of a special reinforcing tape. After which it needs to be smoothed out. Reinforcing tape allows you to maintain the strength of the seam for many years. This will prevent cracks from occurring.

Paper tape should not be used. The paper product will not allow air to pass through and absorb excess moisture. And when drying, bubbles form on such a tape, lifting the layers of putty.

The most useless is mesh self-adhesive tape, which is widely used by Russian craftsmen. It stretches instantly and does not have the required strength.

Final step

After the materials have dried, it is necessary to clean the surface with a spatula or sandpaper. The entire surface area is covered with a layer of primer.

Now every reader knows the best way to seal seams on drywall. Simple manipulations and quality materials can help in creating a stylish design.

Drywall seams at the final stage of installation require finishing so that the surface becomes smooth and neat. But what other tricks and secrets does this technology hide? In the article we will tell you why, how to properly, and what means are best to seal the seams, and whether it is possible to do without this procedure.

Joints formed during installation of gypsum boards

No matter how correctly the frame for drywall is made, a seam remains between two adjacent sheets. The size of the joints depends on the characteristics of the material itself, which has different kinds edges During installation, these edges create visible indentations on the surface, which can only be removed during the finishing process.

Uneven seams are formed if the frame is not rigid enough or if few profiles are taken for its construction - under the weight of the gypsum board these metal constructions are deformed, causing the edges of the slabs to stick out unevenly. Another factor in the formation of seams is the loss of linear dimensions of gypsum board sheets as a result of temperature changes. Microshifts of the sheets in this case lead to the formation of cracks.

If you do not seal such seams, then:

it will not be possible to achieve a flat surface;
the material will deteriorate, because the edges will become exposed direct influence environmental factors (getting wet, drying out, etc.);
When painting or wallpapering, stains will appear on the surface and the finish will move away from the surface.

What products will help hide joining seams?

To finish the seams you will need the following materials:

Perforated paper or reinforcing serpyanka tape for reliable fastening of drywall seams. It is able to withstand high tensile loads, protects sheet joints from the appearance of cracks during microshears, and is used to ensure adhesion between the putty layer and gypsum board.

Serpyanka ribbon

Putty is one of the most important components in this chain with which seams are sealed. Most high-quality compositions– Uniflot or Fugen (Knauf brands) – easy to apply, do not shrink and do not crack over time, provide low consumption, high strength, and a smooth hard surface.
The primer is used to protect the material from mold and mildew, to increase resistance to moisture, to ensure adhesion of the finishing layer to plasterboard sheets and to reduce material costs. Apply the primer in two layers, it is preferable to use an acrylic mixture of the Knauf, Belinka, LNPP brands.
The plaster serves as a finishing coating, creates a smooth surface, protects the gypsum board and increases its adhesion to the subsequent applied layer.

Read also:– causes and solution to the problem

Most Popular plaster mixture– Rotband (Knauf, Germany). Its advantages are a wide range of surfaces to be treated and fast drying time (from 25 to 45 minutes). Plaster is made on the basis of gypsum, so it allows the walls to breathe. Moisture resistant. Used as finishing decorative covering or serves as a layer between gypsum board and wallpaper, paint or tiles.

The main feature when working with Rotband is that the composition must be applied quickly or diluted in small portions, since the mixture sets quickly.

Finishing materials produced by Knauf

How seam finishing technology works: practical tips

Finishing stages:

the surface of the plasterboard is cleaned of dust and dirt (with a vacuum cleaner or a dry cloth);
run your hand along the surface of the sheet - if the heads of the screws are touched, they need to be tightened;
a chamfer is cut from gypsum board sheets at an angle of 45 degrees, with a width and depth of no more than 5 mm, so that the plasterboard sheets do not cling to the edges in the event of micro-shear and chips do not appear;
then the surface of the gypsum board is coated with the first layer of primer;
dilute the putty, apply perpendicular movements to the seam at the joints, pressing inward;
let the putty set (but not dry), apply reinforcing or paper tape to the seam, press it - it should immediately stick to the solution;
another layer of putty is applied over the tape, carefully leveling, but so that the tape is not visible, the mixture is pulled out and leveled until the surface becomes even;
The joint between the wall and the gypsum board is sealed in the same way, only the tape is folded in the corner so that it folds in half;
screw caps are puttied;
After the putty has completely dried, carefully sand the seams;
after sanding, apply a second layer of primer;
when there's nothing left on the wall dark spots from the primer mixture, the surface of the sheet is covered with Rotband, carefully leveling.

Room ready for final plastering

After this, the stage of finishing the gypsum board sheets is considered complete. It is not necessary to additionally treat the layer of plaster; you can use it as a front covering or decorate it with tiles, wallpaper, or tinting. You will see how all the stages of finishing take place, from puttying the seams to applying the decorative layer, in the video below.

Finally

In the end, we’ll tell you about the little helpers in this matter: a spatula, a brush or a roller. You will need two types of spatula: one narrow (100 mm) - designed specifically for sealing seams, the second wide (250 mm) - for rubbing putty and plaster over the surface of the sheet.

The blade should be flexible to make the solutions easier to apply.

For priming you will need a brush or roller, however, in order to save material and even distribution, the latter is preferable. The use of these tools, materials and technology will help keep the surface smooth for a long time, free from small cracks and other flaws.

– a necessary measure if you want to end up with a flat wall or ceiling.

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