Gypsum fiber sheets (GVL) are an excellent building and finishing material that has found wide application in modern technologies and floors. We will tell you how to build a plasterboard partition and what is the DIY wall decoration of GVL.
Partition construction
Structure and composition
Before starting work, you should determine what elements our partition will consist of.
The structure and composition of the plasterboard wall:
- Frame made of galvanized metal profile... Includes the following elements: rack-mount profile (PS) for vertical frame parts and guide profile (PN) - for horizontal wall-to-ceiling and floor abutments;
- Soundproof filler... In this capacity, non-combustible polystyrene foam or mineral wool slabs (glass wool) are usually used;
- Frame cladding, double-sided... It is carried out with gypsum fiber sheets (GVL) by fixing them to the frame racks with self-tapping screws on both sides of the structure;
- Filling seams and joints... For these purposes, they use fast-hardening putties for joints such as KnaufFugenfuller or KnaufUniflot, as well as fiberglass reinforcing tape, which is popularly called "serpyanka";
- Wall surface leveling putty... It is necessary to create a flat plane on the surface of the structure; it is performed by applying a solution to the walls with a thin uniform layer;
- Finishing putty... It is necessary if you plan to paint the walls. It is carried out with any finishing plaster mixture, which is applied in a thin layer, and after drying, it is sanded with an abrasive float or emery cloth;
- Finishing... This can be wallpaper, panels, decorative plasters and other facing coatings. In this case, the finishing putty is not produced.
For the construction of the frame, the following elements are used: PS and PN profiles. They come in various sizes:
| Sketch of the cross-section of the PS profile | Marking | Sketch of the section of the PN profile | Marking | Aspect ratio, axb, mm | |
|
|
PS 50/50 | 50x50 |
|
MON 50/40 | 50x40 |
| PS 65/50 | 65x50 | MON 65/40 | 65x40 | ||
| PS 75/50 | 75x50 | MON 75/40 | 75x40 | ||
| PS 100/50 | 100x50 | MON 100/40 | 100x40 |
As you can see, in different brands of profiles, only the size of side a changes, while side b remains unchanged. Therefore, when purchasing a set of profile elements, make sure that the dimension a for the upright and guide rails is the same, otherwise their joint installation will not be possible.
Depending on the height of the structure, profiles of different sizes are used (the size of the side is indicated, a, mm):
- Up to 3 meters - 65;
- From 3 to 4.5 meters - 75;
- Over 4.5 meters - 100.
The maximum height of partitions that can be built using this technology is 5 meters. In the work can also be used auxiliary profiles with a side size a = 50 mm for the installation of horizontal lintels, framing holes, etc.
As sound insulation, you can use polystyrene foam boards with a fire retardant thickness of 50 mm, as well as mineral wool boards with a thickness of 50 - 100 mm. These products fill the gap between the frame skins.
To cut GVL sheets, a construction knife (for longitudinal and transverse straight cuts), a hacksaw for GVL (for cutting rectangular holes) and a drill with a circular saw (for cutting round holes up to 80 mm in diameter) are used.
Important! Before installation, the sheets must be held in the room where the work is planned for at least 4 days in order for them to acquire the same humidity.
Assembling the frame
The instructions for assembling a metal frame are simple and straightforward:
- With the help of a coated cord on the floor, we beat off the line of the partition according to the project. The line should be strictly perpendicular to the opposite walls. Then, using a plumb line, we transfer the markings to the walls and ceiling;
- We take the PN and cut two segments along the length of the line on the floor, glue them with sealing tape and fix them along the floor and ceiling using BS-K 8x50 mm dowels and 4.2x51 mm galvanized screws with a pitch of 50 cm, but not less than 3 per one segment profile. We make sure that the details are located exactly according to the marking;
- We take the PS and cut out two segments along the height of the room minus 5 - 10 mm, which we glue with sealing tape and fix along the walls between the guides. The step of installing the screws is 100 cm, but not less than 3 for one piece of the rail;
- Next, we expose the PS on the sides of the doorway, which we reinforce with wooden bars inserted into the profile. For work, we use a plumb line or a level, we connect the parts using special fasteners in the profile structure or galvanized self-tapping screws 4.2x14 mm.
- We make the upper border of the doorway from the PN segment, which we reinforce with a vertical crossbar (or two) from the PS installed between it and the ceiling guide;
- We install the PS with a pitch of 402 mm along the entire partition, except for the doorway. We observe verticality, if the intended place of the joint of the sheets did not fall on the substation, then in this place we put an additional profile.
We connect the profiles with screws after the PS is inserted into the PN:
Sheathing and soundproofing
After the end of the frame assembly, it should be sheathed with GVL sheets. To do this, cut out the sheets and cut out the necessary parts. If the vertical size of the sheet does not overlap the height of the structure, then horizontal jumpers from the PN of a smaller size should be installed at the joining point, or holes for joining should be cut out in the normal profile.
The sheets are fixed to the frame with two-thread self-tapping screws with a self-centered head measuring 3.9x30 mm with a pitch of 30 cm at a distance of 12 mm from the edge of the gypsum sheet. The length of the screw should allow it to enter the profile by 1 cm. A gap of 10 mm is left between the sheets and the enclosing structures, and 5 mm between the adjacent sheets.
Fastening is carried out from an angle in two perpendicular directions: vertical and horizontal:
After sheathing one side, the structure is filled with sheets of mineral wool, inserting them between the posts so that they are slightly compressed and do not fall. Then sheathing of the other side of the partition is performed, thereby closing the soundproofing layer.
Important! Joining of sheets (horizontal or vertical) is performed only on the profile. If there is no profile at the junction of neighboring GVLs, it must be added.
Wall decoration
For finishing and leveling the walls, GVL is glued to their surface with putty or glue. If the irregularities on the walls exceed 20 mm, then strips of plaster with a width of 100 mm are first glued to the wall, to which the sheets are then glued using a putty:
Here, as in the case of the partition, sheets are preliminarily marked and cut out, which are then glued to the walls, creating the most even surface. If you are not intimidated by the higher price, use waterproof products.
Important! Remember to cut out the holes for sockets and switches in advance. This is easily done with an electric drill with a circular saw.
We maintain a standard gap of 5 mm (for gypsum board) or 1 mm (for gypsum board) between the sheets, which will then be filled with putty.
If the walls are too crooked, or their internal insulation is required, a frame finishing method is used. For this, the wall is pre-leveled with a structure made of PS and PN, which are fixed to the surface with dowels or brackets.
The step of the racks and the principle of assembling the frame is the same as in the construction of the partition, only here each rack and horizontal part are attached to the wall in three places.
After assembling the frame, it is sewn up with drywall like the frame cladding from the previous chapter. The space between the wall and the cladding can be filled with insulation.
More recently, the decoration of the room consisted of pasting the walls with simple paper wallpaper, but now many people have a question about how to properly putty drywall for painting, since the surface should be perfectly flat and smooth. This work can be done independently, adhering to a certain algorithm of actions.
Why putty drywall?
Some home craftsmen believe that plastering drywall under the wallpaper is a waste of time and effort. This work is very painstaking and requires special perseverance. In some situations, when decorative panels are used for surface cladding, it is possible not to putty the plasterboard surface. In other situations, you need to putty.
Seams and fastener caps must always be repaired, regardless of the finishing method. Also, during transportation or improper storage, GVL boards can be deformed, which can be easily corrected with putty.
Plastering of drywall walls must be performed, under wallpaper, painting, and decorative plaster. If ceramic tiles or PVC panels are used as facing material, it is enough just to close up the seams and fasteners.
Plasterboard putty technology
As soon as the drywall construction is ready, we proceed to puttying. In order to have an idea of \ u200b \ u200bthe performance of the work, we will analyze the complete algorithm for finishing drywall with our own hands for painting. So:
- surface primer from gypsum board;
- sealing of fastener caps;
- putty of seams using serpyanka;
- installation of a perforated corner;
- applying a starting layer of putty;
- padding;
- finishing layer of putty;
- priming for finishing lining.
Which putty is best for drywall? You can use any - plaster, polymer, cement (for wet rooms).
Finishing polymer coatings are applied in a thin layer, while the surface is smooth.
Gypsum putties are of two types - starting, applied with the first base layer, and finishing. These compositions differ in plasticity and the size of the particles that are in the composition. These mixtures are used very often, their cost is not high.
Putty for GVL is made in two forms - in containers, ready for use, and dry, which must be diluted with water before use.
Sealing joints and fasteners
First of all, before the final putty of drywall structures, preparatory work should be done: prime the drywall and seal all joints. The work should be done using the following technology:
- dilute the composition according to the manufacturer's instructions. It is worth remembering that gypsum mixtures do not last long, so you need to dilute exactly as much as you can work out in 30 minutes;
- with a small spatula, apply the mixture to each head of the fastener over the entire surface of the GVL. Carefully remove the excess, do not leave too much material on the caps, forming irregularities. Once all the screws are masked, you can proceed to the graying stage;
- close up the seams in the material. It is worth noting that there are two types of joints in the construction of large drywall structures - vertical and horizontal, and the filling technology is different.
For high-quality sealing of seams, it is worth tearing apart the technology of each type in detail.
Vertical connections
It is worth noting that a sheet of drywall has a beveled edge on the vertical side, which should be carefully hammered in with a starting putty before sealing. Then they should be glued with a serpentine, to prevent the appearance of cracks later. Once the seams are glued, a small layer of putty is applied to the serpentine with a wide spatula, so that the surface becomes even. As soon as all the seams are sealed, work is stopped until the solution is completely dry.
Trim seams
Before sealing the horizontal GVL connections, you need to do the following:
- to expand the seams - cut the edge at an angle of 45 degrees on each side of the joint;
- apply a brush to the primer and walk along the seam to remove dust and increase adhesion;
- as soon as the soil dries out, we clog the joints with putty, while it is more convenient to work with a small spatula;
- align the seam surface and glue the serpyanka;
- using a large spatula, apply a small layer of putty to the mesh.
This completes the work on sealing the seams and masking the caps of the screws.
Arrangement of external and internal corners
Before starting this process, you need to prepare:
- perforated corner;
- serpyanka.
Serpyanka is used for arranging internal corners when puttingty plasterboard boxes, wall and ceiling joints. The technology is simple:
- apply a small amount of the composition to the corners;
- glue the serpyanka;
- remove the remnants of the material with a spatula - in this case, the serpyanka will be pressed into the solution;
- apply a thin layer of putty, masking the mesh.
For arranging the outer corner, use a perforated, corner profile, for this:
- cut off the element of the desired size with metal scissors;
- cut off the edges by 45 degrees, to prevent the edge from wrapping when puttying;
- apply a thick putty to the corner of the structure, with small sticks on both sides in a checkerboard pattern and press the corner into the material;
- check the level of the installed element, if required, immediately carry out an adjustment until the material has set;
- remove excess mortar with a spatula so that the surface of the corner is level with the plane;
- leave the corner until the solution sets, or until it dries completely;
- then the surface is polished and a small layer of putty is applied over the entire surface of the corner on both sides.
After all the corners are in their proper shape, they should be left for 12 hours, until they dry completely.
Before continuing to putty the surface, you need to carefully grind the corners and joints, so the quality of the drywall finishing with finishing compounds will be better. You need to grind with an abrasive mesh with a mesh of 180 microns.
Leveling the GVL plane with putty
In order for the work of plastering drywall to be done quickly, you need to prepare a large spatula (400 mm), and a spatula "help" (100 mm).
The first layer will be the application of a starting layer of putty - the layer thickness is 5 mm, usually more on drywall is not needed. This layer will be enough to mask all irregularities in the material and possible defects.
The mixture is prepared as written on the manufacturer's packaging.
The solution should be the consistency of thick sour cream without lumps. This can be achieved with a drill and a mixer attachment.
The technique of plastering the surface of drywall is simple: we take a large spatula, at its end with a small spatula, lay out the roller from the putty. We press the blade to the surface and stretch the composition. We repeat several times, filling in some piece of the wall or ceiling. Then we clean the blade and run it over the surface that has just been putty, leveling it. You need to align as carefully as possible - it will take less time for sanding.
When the plasterboard is finished, wait until it dries. Then you take the already familiar tool - a bar with a net and level out all the flaws. Sanding is finished, remove dust, pass the surface again with a deep penetration primer. After drying, proceed to the application of the second layer.
Next, you need to putty drywall with a finishing compound. As they wrote, it can also be based on gypsum, like the starting one, or maybe based on polymers. Both are suitable, but with some it is more difficult to work - they quickly begin to roll down and freeze.
The finishing putty is made more liquid and applied in a thinner layer. The application technique is the same, nothing changes. In addition to the fact that it is more difficult to work, it spreads worse, but you need to stretch it in a thin layer and quickly align. On the primer, everything is much better, and without it, the lower layer quickly draws moisture from the fresh plaster, and it begins to roll. After applying the finishing putty, they again wait until everything is dry, then they begin to level it, but this time they use not a mesh - noticeable grooves remain from it, but sandpaper with a fine grain. It is not so convenient to work with it - it clogs up quickly, but the surface is smooth. If you prepare the surface for painting, we do the backlighting from below or from the side and you can use not an incandescent lamp, but an LED one - all the flaws are visible. Even very small ones.
To create a beautiful, flawless interior in an apartment, the walls in the room must be perfectly flat. The finishing putty of the walls, which is easy to do with your own hands, can help in this. To do this, it is enough to adhere to the selected algorithm for performing the work.
roomplan.ru
Plasterboard putty under the wallpaper is the key to a successful repair
Putty is one of the main and highly desirable stages of rough finishing of plasterboard surfaces Today, the decoration of walls and ceilings from plasterboard is becoming more and more popular. This is due to the fact that the material is inexpensive in price, easy to install and use. Drywall offers many possibilities. With its help, you can align walls and ceilings, create a wide variety of designs. However, just drywall walls and ceilings will not look very aesthetically pleasing. Therefore, wallpaper or paint is used for its decor. Plasterboard putty under the wallpaper is not a prerequisite, but it is highly desirable.
Many are worried about the question - is it possible to paste over the walls without putty. Theoretically, this option is possible, but professionals advise not to.
It is important to take into account that, despite the perfectly smooth surface, which implies the unhindered gluing of wallpaper onto drywall, the method of pasting walls and ceilings without putty can spoil the material once and for all.
Drywall requires special preparation before wallpapering. This procedure will prolong the life of the material and will also provide the surface with a beautiful appearance.
If the wallpaper is glued to the gypsum board surface without prior putty, then the probability of damage to the structure during their dismantling increases dramatically
Why you can't glue wallpaper without putty:
- When wallpaper is glued onto drywall, their strong adhesion occurs, which leads to the impossibility of replacing the wallpaper in the future. You will either have to peel the wallpaper from the drywall, which will ruin it, or stick new wallpaper over the old finish.
- Drywall has a characteristic shade that will shine through the light-colored wallpaper, which will change its natural shade.
- Despite the smooth surface of the drywall, when installing it, joints and seams are formed that need to be putty, otherwise the appearance of the surface pasted over with wallpaper will be poor.
Putty is an important stage in finishing work. It gives the surface an ideal shape, provides reliable protection of the material, makes it possible to make the next repair without problems and additional costs.
Do I need to putty drywall before wallpapering
When doing repairs with their own hands, many people have a question about the expediency of a putty. After all, the procedure takes time, and the flat surface of drywall seems ideal for gluing wallpaper directly on it.
To putty drywall or not is a personal matter for everyone. It is important to familiarize yourself with the repair rules before performing any repair work, and consult with professional builders.
It is the professionals who advise not to glue the wallpaper directly onto the drywall. The only advantage in this situation will be time savings only for a short period. When deciding to glue new wallpapers, you will have to change not only them, but also install new sheets of drywall.
Plasterboard structures include sheet joints and attachment points, which will be clearly visible on the surface of incorrectly pasted wallpaper
Consequences of gluing wallpaper without putty:
- Irregularities and seams may be visible.
- Light-colored wallpapers can change color.
- When removing old wallpaper, sheets of gypsum board will also have to be replaced.
You can glue the wallpaper on drywall. For example, if this is the last renovation. When gluing wallpaper directly onto drywall, the procedure for preparing the walls is still inevitable. Before gluing the canvases, it is imperative to apply several layers of primer, which will protect the surface from the appearance of mold and mildew.
If in the future the wallpaper is supposed to be replaced, it is better to spend a little time and provide a high-quality surface for finishing work.
How to putty drywall under the wallpaper correctly
Putty is a simple construction process when it comes to drywall. It is easy to putty on a smooth surface. The most important task is to putty joints, remove surface defects.
Before puttingty, it is important to check the surface of the gypsum board for self-tapping screws that can stick out of the wall. To do this, you need to run a spatula over the entire surface, listening to the metal sound. If self-tapping screws are found, they should be screwed in even deeper, while the depth should not reach half the sheet thickness.
Serpyanka is needed for high-quality sealing of gypsum board joints. It is glued to the surface, then a layer of putty is applied. If you do not use tape, subsequently, cracks may appear at the joints of the sheets.
The surface preparation process includes putty, primer and seams with special tape.
- Prime the surface to protect the drywall from mold and mildew.
- For a better application of the putty, the surface can be sanded, eliminating unnecessary irregularities and dirt.
- Prepare the necessary working tools. This requires two spatulas: a large and a small one. A large spatula is used to apply a putty material to the surface, a small spatula is applied to a large one, while evenly distributing the material over the entire working surface of the spatula.
- It is necessary to apply the putty strictly from top to bottom. It is important to follow all the rules and apply the putty in two layers. The first layer will eliminate all defects on the surface, the second will complete the complete finish of the drywall. After applying the initial layer, you need to let it dry. The second coat can only be applied to dry surfaces.
- After the second layer of putty has dried, it is necessary to sand the surface. For safety reasons, a respirator and goggles must be worn. Sanding is done in a circular motion, with minimal pressure on the wall.
- Apply a primer. It will protect the surface and improve the adhesion of the glue and wallpaper. For reliability, the primer can be done twice.
A layer of primer will also protect the decorative wall surface from possible dampness.
In order for the wallpaper to lay on the surface easily, the putty must be even, without irregularities and depressions. It is important to carry out all its stages correctly, make sure that each layer dries out, only then apply a new layer of putty and primer.
How to choose the right filler
The quality of the putty depends on the materials from which it is made. There are many companies on the market that offer putty at a wide variety of prices.
It is important to understand that the minimum price indicates the low quality of materials. Therefore, when choosing a putty, you should not save.
The putty can be designed for different types of work, so it is important to choose a specialized putty.
It is not recommended to choose a loose putty if there is no experience in finishing work. Failure to comply with the proportions when diluting it can ruin all the work done before.
Material selection rules:
- Do not use putty marked "for outdoor use".
- Do not use a putty that has already expired.
- You can't use too cheap material. Firstly, such material will not ensure the quality of the putty and its reliability. Secondly, the consumption of such materials will be large, which will lead to costs.
- Give preference to ready-made mixtures. This will allow you not to waste time preparing the solution, and will provide confidence in its quality.
The right filler material will provide a high-quality surface that will be a reliable protection for drywall and an ideal surface for wallpapering.
Do-it-yourself drywall putty under the wallpaper (video)
Drywall is a modern building material that is widely used for renovation work. Consumers choose this material because it is inexpensive, high quality and easy to install. Those who carry out repairs on their own, after installing gypsum plasterboards, think about the advisability of puttingty before applying wallpaper. Professionals definitely advise to putty drywall. This will provide a solid surface. Drywall will last a long time, and boring wallpapers can be changed to new ones without additional costs and efforts.
homeli.ru
Plasterboard for wallpaper
Plastering plasterboard walls under the wallpaper with your own hands An important stage in the renovation work is the preparation of surfaces for painting and wallpapering. Drywall is a popular coating because it perfectly insulates and levels walls and does not require the dirty work of plastering. The question of whether to putty plasterboard under the wallpaper, each owner decides on their own, but experts recommend puttingty.
If you do not putty the surface, then when using light wallpaper, the seams will become noticeable, and the wall will not look very aesthetically pleasing. In addition, after a while, the old wallpaper will be difficult to remove, since they are removed along with the cardboard cover. The walls will have to be renewed and reinforced with plasterboard. Therefore, it is easier to remove the old wallpaper if the drywall is putty under the wallpaper. After cleaning the old canvas, an even layer remains, ready for pasting with new wallpaper.
What kind of filler should you choose?
An important role in the performance of work on putty is played by the material, the speed of the processes and the result depend on its quality.
- Do not purchase material marked “for outdoor use”. Such a putty can be intended for finishing work on the outside of the house, facades and contain harmful substances;
- Check the expiration date of the material;
- Do not buy cheap putty, as its consumption will be higher and the quality will be worse;
- It is better to use a ready-made putty, since dry material requires mixing with a mixer and special containers. The finished mixture is always prepared correctly and it is easier for the master to work with it.
For leveling surfaces, putties are used for various purposes.
Varieties of putty materials
- Leveling putty (masks visible defects);
- Putty for the second layer (prevents the first layer from peeling off, creates a smooth and perfectly flat surface);
- Special putty for filling cracks and joints.
The leveling putty can be made from cement, plaster or polymeric materials. It should be noted that it is not advisable to use gypsum plaster in a humid room, since this material is not resistant to moisture. It is better to use a cement putty, however, when it dries, it can create microcracks. The most acceptable polymer material, but it is more expensive.
Most often, builders use finishing putties from well-known manufacturers. Such putties eliminate the smallest defects and are applied in a thin layer not exceeding 1-1.5 mm. Layers with the help of "superfinishing putties" are even thinner - less than 0.3-0.5 mm. The variety of putties allows you to choose the optimal material and perform high-quality work.
Plasterboard putty
Plastering of drywall under wallpaper is carried out in several stages, starting with surface preparation, priming, putty, and ending with sanding the surface. The primer must dry well before applying the first coat. The optimum wall temperature is at least 5?, Otherwise the adhesion of the putty material to the drywall will be fragile. It is better to use the entire ready-made mixture in buckets at once, since the unused mass becomes unusable after storage. If the mixture is prepared independently, then for this you need a drill and a mixer, the prepared putty is insisted or used immediately (indicated in the instructions).
Drywall sanding
To obtain a perfectly smooth surface, drywall after putty is sanded using a special-purpose trowel with a fine emery coating. However, sand the surface carefully so as not to remove too much, otherwise the cardboard cover will show through.
After this process, the room is removed from dust, then a primer is applied to the surface of the drywall. Drywall after carrying out the listed works is ready for painting or wallpapering. It should be remembered that all processes (cleaning, putty, priming, grouting) must take place on a dry wall and apply each subsequent layer after the previous one has dried. Otherwise, pellets may form, which will negatively affect the operation.
Drywall primer
Preparatory work includes cleaning the surface from dirt and dust, removing improperly screwed self-tapping screws, and applying a mesh (serpyanka) between the joints of drywall so that cracks do not form afterwards. Next, defects are eliminated - dents or scratches are covered with putty. The primer is applied to a whole sheet of drywall, or joints, corners and repaired areas are selectively primed. This operation requires a roller and a special primer. The material consumption is small, one layer is usually sufficient and the primer does not need to be saved.
Nuances when carrying out puttying
- For convenience, it is better to have two spatulas - wide and narrow. A wide spatula is needed for applying layers and leveling the surface, and a narrow one is needed for finer work and removing the remains of the first layer;
- A corner spatula is useful for working in corners;
- You can use the building level to determine how evenly the layers are laid;
- The seams are started from the top, putty is applied to the seams and lightly pressed into the recess with longitudinal movements. When performing this work, you should not save material, since after the putty dries, pits may form at the seams;
- When applying several layers, the next layer is always applied after the previous one has dried.
The main guarantee of successful work is accuracy and patience, since wallpapering requires a perfectly flat and smooth surface. To check the quality of the putty, you can make control strokes, this will allow you to feel the material and find out its properties (how quickly it sets). If you observe the correct angle and pressure of the trowel, then as a result of sweeping movements, a smooth and even surface is obtained. The resulting minor protrusions are easily removed with an abrasive mesh. Drywall sanding
Tools used during work
To carry out puttying work, you will need special tools - spatulas of different widths, an abrasive mesh, a roller, a float. A wide spatula is required for leveling, and a narrow spatula is required to remove an extra layer of putty or work in hard-to-reach places. When working with corner joints, use a corner spatula or special plastic or aluminum corners. It is recommended to first treat all corners and then apply the entire layer of putty.
A roller is used for priming, and a float with fine emery cloth is used for grinding. To clean the surface or remove excess layer, use an abrasive mesh. Finished surfaces should be carefully treated with mesh to avoid minor scratches. If the master prepares the mixture on his own, then it is necessary to have a low-speed drill and a nozzle - a mixer.
Thus, plastering drywall walls under wallpaper is an important and painstaking process that requires skill and skill, the quality of the work done depends on the accuracy of the master. Your home will become cozy, beautiful, and the interior stylish and fashionable, if the best materials are used, and the repair processes are carried out efficiently and correctly.
shabashka-pro.ru
Plasterboard putty under wallpaper + video
Recently, drywall has become often used to insulate and level walls. This choice is very convenient, as it allows you to quickly and efficiently level the surface. Also, such work is considered clean and after completion you will not need to waste time removing dirt. In this article we will analyze how to do it yourself drywall putty under the wallpaper.
Why putty drywall
Many do not understand why putty drywall under the wallpaper, if the surface is already perfectly flat. The thing is that it will be very difficult to remove the wallpaper from the wall without putty. The sheets will be removed along with the drywall layer and the wall cladding will have to be re-done. Also, if you decide to glue thin wallpaper of a light shade, then the seams between the sheets will be visible. Therefore, we highly recommend to putty the walls in order to avoid possible problems with wallpapering.
What putty to buy
It is very important to buy quality material. In order for your purchase to meet expectations, follow these tips:
The first step is to clean the dust and debris from the surface of the sheet. Then you will need to inspect the drywall to identify incorrectly screwed screws. You will need to hold a spatula over the sheet, if the blade does not cling to anything, you do not need to change anything. If obstacles interfere with the spatula, it will be necessary to tighten the screws.
Also, make sure that the screws are not screwed too deep into the walls, otherwise problems may arise with the putty. If the screw is screwed in deeply, remove it and screw in a new one a short distance.
If defects were found on the surface - cracks, dents and scratches, it will be necessary to seal them with putty before applying the main layer. In the event that the defect is serious, the filling must be carried out in several layers, but remember that before proceeding, the layer of mortar must definitely dry.
Surface priming
We recommend applying the primer to the entire sheet. In no case should you save on material, since the success of the work done depends on the primer. It will protect the walls from mold and other bacteria, and will also help prevent the wallpaper from peeling off.
It is necessary to apply the primer with a roller. It only takes one layer, so it won't take a lot of time and effort. After that, you will need to glue the joints with a special reinforcing tape. It must be applied so that it is exactly in the middle of the seam formed by two sheets of drywall. Watch a video that will help you better understand the surface primer with your own hands:
Putty preparation
If a ready-made mixture was purchased, it will be possible to proceed immediately to putty and wallpapering. But the dry solution will first need to be prepared according to the instructions on the package. Usually it is necessary to dilute it in warm water and stir well using a construction mixer. If you don't have a mixer, try using a drill attachment, which can also help. In no case try to stir the mixture by hand, as you will not succeed and most likely spoil the solution.
Remember that some mixtures require infusion, while others are recommended to be applied immediately. After preparation, stir the solution again. In order to prepare with high quality, be sure to follow the advice and instructions on the package, otherwise you risk spoiling the putty and putting the wallpaper under attack.
To do the work with your own hands efficiently and avoid stupid mistakes, we recommend using the following tips:
In order to understand in more detail all the nuances of plastering drywall walls under do-it-yourself wallpaper, we strongly recommend watching the following training video:
Surface grinding
Since the wallpaper can only be glued onto a perfectly flat surface, the plastered walls will also need to be sanded. To do this, you will need to use an emery float. Keep in mind that a lot of dust will be generated during the process, so we recommend that you wear protective equipment that can protect your eyes and body.
After completing the work, do not forget to remove the dirt with a vacuum cleaner. One more layer of primer will need to be applied to the surface, and now it will be possible to proceed directly to wallpapering. Watch the following video to better understand the nuances of sanding for wallpapering:
As you can see, it is not so difficult to putty drywall under the wallpaper with your own hands. The main thing is to do everything carefully and not to rush anywhere. Remember that if a mistake is made, all wallpapering is at great risk. For a better acquaintance with the putty of the walls under the wallpaper, we recommend watching the training video:
Plasterboard is a very practical and easy-to-use material, and it is also inexpensive. The installation process excludes the "wet" cycle, but at the final stage, it is necessary to seal the mating lines between the sheets. The durability of the repair measures depends on the quality of the work, since the violation of the technology turns into cracks at the joints of the plates. Therefore, it makes sense to familiarize yourself with the features of the GCR filling procedure.
Question number 1: how to putty the joints between drywall sheets: tools and materials
Any construction operation is not complete without the presence of certain tools. Leveling the surface of gypsum plasterboards is no exception. To close the folds, you will need the following tools:
The latest developments in the construction industry in the form of rollers make it possible to efficiently process lines of joints between gypsum board sheets both at the outer and inner corners. This is important when quality formulations. The long handle makes it possible to work in rooms up to 3.5 meters high.
Necessary materials
From the materials you need to prepare the following:
- Reinforcing tape in the form of a perforated paper strip or serpyanka. The use of the latter is justified when working in a new house, when a slight shrinkage is expected with the appearance of cracks between the slabs.
- Joint putty. Good results are shown by the use of Knauf Uniflot dry putty mixture.
- Primer for gypsum board, which increases the adhesion properties of the surface. Some formulations are water-repellent and antiseptic.
What kind of putty is used to seal the joints between drywall sheets in private housing?
When choosing mixtures for processing linear gypsum plasterboard joints, it is important to consider what the final finish will be in the end. For example, or plaster, inexpensive materials can be used, because the possible appearance of cracks does not threaten the integrity of the topcoat. Craftsmen mainly use Knauf products:
- Fugenfüller.
- Uniflot.
The first plaster on the list for drywall joints is just suitable for pretreatment under decorative plaster or wallpaper. The mixture is inexpensive, therefore it is very popular with developers. When working with Fugenfuller, it is advisable to use serpyanka as a reinforcing layer.
The second version of the putty mixture under the Uniflott brand is a more expensive product, because it contains polymer additives. The strength and quality of the coating created by this compound is much higher than that of Fugenfüller. Before as , their plane can also be processed by Uniflot. If you plan to use paint as a finish, then this mixture is just right.
Types of plasterboard edges
The transverse edge is the same for all types of gypsum plasterboards, it is always straight and not covered with a layer of cardboard. Another thing is the longitudinal edge of the sheet, there may be the following options:
- Direct (PC) - is done, as a rule, on gypsum fiber boards. Such joints are not sealed during roughing.
- Semicircular (PLUK) - an edge thinned from the front side of the sheet. The most common type of longitudinal end, which is sealed with a reinforcing tape and putty mixture.
- Beveled (CC) - the process of sealing these edges is quite laborious and consists of three to four stages with the obligatory use of a serpyanka.
- Rounded (ZK) - reinforcing tape is not used when sealing such seams.
- Seam (FK) - similar in shape to the PK edge, is mainly used on gypsum fiber board.
There are several other types of edges in production, but it is almost impossible to see them on the shelves of our building markets. The most common types of edges are PLUK and UK. They do not need additional processing, so you can immediately putty.
How to putty joints between drywall boards: technological moments
The process includes preliminary preparation of the abutting edges. In places where the joint line is formed by a straight cut edge, you need to make chamfers. To do this, use a construction knife to cut the edge of the sheet at an angle of 45 ° to a width and depth of about 5 mm. Further, the folds are cleaned of dust and primed.
While the primer is drying, you should think about how to putty the joints between the drywall plates, in other words, start preparing the mixture. It is prepared according to the instructions on the package. A mixer is used to mix dry powder with water, turning it on at low speed. The finished solution resembles thick sour cream in consistency. Now you can start directly with the process:
- Using a narrow spatula, apply the mortar across the seam, while trying to rub it into the gap so that the mixture fills the thickness of the gypsum board. If the connecting lines exceed a length of 3 meters, then it is worth dividing them into sections.
- Place a reinforcing tape or fiberglass mesh on the applied mixture. With the rubbing movements of a spatula, immerse the mesh into the depth of the mortar.
- Use a 250 mm wide spatula to "pull out" the remnants of the mixture on the sides of the joint in order to level the plane.
- The inner and outer corners are sealed using the same method using corner spatulas. At the same time, the grooves from the self-tapping screws are covered over.
- Using a sanding block, after the mixture has completely dried, grout the surface in a circular motion.
- After sanding, remove residual dust and prime the joints with a primer.
In order for the putty of joints between drywall sheets to be performed efficiently, work should be started only after the humidity in the room has normalized. Temperature differences are also undesirable, which lead to the appearance of cracks.
The quality of the topcoat is taken care of in advance, even at the installation phase of the sheets. It is only necessary to dock the slabs on the profiles; their edges must not be left unsecured. The gap between the sheets is required, its size should be at least 3-5 mm, because in the future, cracks may appear.
The question often arises, how are the seams in the drywall structure reinforced? There are various types of reinforcing tapes for gypsum board joints. Each tape performs specific functions and has its own degree of reliability. Let's figure out the best way to use a serpyanka or Kurt paper tape from Knauf. We will find out what the tape with metal inserts is for and how to mount it. On the selected video, you can see the subtleties and nuances that are important to observe in the process of working with putty joints on the gypsum board.
Reinforcing tape application
When doing repair work in an apartment, sooner or later every master or owner is faced with the use of drywall, and you also need a tape for gypsum plasterboard for seams and abutments. This building material is unique because it is widely used:
- for leveling walls and ceilings;
- creation of multilevel ceilings;
- the creation of arches, partitions, bar counters;
- creation of a fireplace, niche, box;
- production of furniture items.
Drywall has a perfectly flat surface, which is practical for finishing work. But, in order to start painting or wallpapering, drywall should be brought.
GVL tape is used to close the joints of plasterboard sheets. At the border of 2 sheets, there is a small depression formed from a pre-made chamfer. This cavity should be sealed with reinforced tape. It performs the functions:
- The joint is strengthened. During long-term operation, drywall does not deform or crack. This is mainly due to temperature fluctuations. Even if the temperature does not jump much - only 5 degrees, the drywall surface is susceptible to this.
- Brings out the plasterboard surface to a perfectly flat surface.
- If the gypsum board picks up moisture, it will expand, after drying it will decrease. Reinforced drywall tape maintains the integrity of the entire coating. Changes in moisture can occur in private houses, when it is spring or autumn outside, the house also becomes damp. GCR absorbs moisture. As the temperature rises, the surface dries out.
- Reinforced tape with metal strip insert for plasterboard corners. It protects corners from cracks and mechanical stress.
To seal large cracks on the surface, use the Kurt tape under the drywall. It is wider in size and, accordingly, has a higher percentage of strength. Reinforcing tape for plasterboard Kurt is also available for reinforcing large joints.
Without the use of tape, the drywall construction will last a short time. As a result, deformation will occur, the surface will be covered with cracks.
Types of tape for GVL
Build the market offers a variety of materials to create the strength of plasterboard structures. Before purchasing drywall tape, you should familiarize yourself with its use, as well as the manufacturer.
There are different types of reinforcing tape for drywall:
It is worth noting that Knauf drywall paper tape has special, small holes for letting in air that can get under the paper while it is applied to the surface.
With the use of reinforced tape, the plasterboard surface or product has a fairly long shelf life - 10 years.
Plasterboard mortar
The correct mix must be selected to reinforce the joint. The material used must be gypsum-based and have good adhesion.
Knauf Fugen - putty made by specialists for sealing joints between gypsum plasterboard sheets. But, sometimes it is used as an adhesive. 
Knauf Uniflot is a durable water resistant mixture. After drying, this putty does not absorb moisture, therefore it is intended for rooms with high humidity. No reinforcing tape is needed when using putty. And also the mixture is used to seal cracks on a plasterboard surface. 
Semin CE78 - "New Formula" is intended for sealing joints in plasterboard structures. Has sufficient strength, does not crack after drying, reinforces joints well. 
JS weber vetonit - polymer putty for sealing drywall joints. The maximum thickness of the applied putty is up to 5mm. 
Volma Seam is a non-shrinking putty mixture intended for reinforcing joints and correcting defects on drywall. The thickness of the applied putty is up to 5mm. 
Serpyanka
Serpyanka goes on sale in rolls. This is a sticky bandage. The tape is made of threads using glass, which gives it strength and practicality. Knauf drywall tape is of high quality, according to many positive reviews from the masters.
Serpyanka is applicable in:
- Sealing plasterboard joints.
- Elimination of cracks that have appeared. To prevent the crack from increasing in length along the surface, tape should be used.
- At the borders of ceiling tiles.
- Reinforcement of the inner corners of the wall and ceiling transition.
With all the positive characteristics of the serpyanka, there is one drawback - with a heavy load on it, stretching takes place. 
Sealing joints in gypsum board
First, let's make it clear that special gypsum putties with increased crack resistance are used for the joints. Knauf company recommends using Uniflot putty for sealing cracks, it has durability and strength, but the cost sometimes frightens off. Therefore, it is often replaced by a Fugenfüller whose price is several times cheaper.
Putties that are used for drywall joints. How to close up drywall joints? Following the step-by-step instructions, sealing the joint does not require a long time, special skills and the cost of hard physical labor.
It is required to carefully prepare the surface. The joint should be cleaned of dust and small pieces of drywall. Further, the dry and clean surface must be primed.
How to glue the tape on drywall? There are 2 methods of mounting serpyanka.
If the tape is sticky then:
If the tape does not have a sticky layer, the joints on the drywall are sealed as follows:
- A layer of putty from Knauf is Uniflot or Fugen is applied to the surface with a primer. Layer thickness 1mm.
- Serpyanka is placed on the damp putty, so that its center coincides with the joint.
- Serpyanka is a little trampled into the putty. This can be done with a narrow spatula. In this case, when the edges of the tape are pressed, the rest of the putty "crawl out". They must be removed immediately.
- After gluing the tape, the putty should harden a little. On top of the tape, another layer of putty is applied, it already covers the tape, the places of fasteners of the drywall sheet.
When installing reinforced tape, it is required that the humidity in the room be moderate. With high humidity, drywall will pick up water and, if this moisture is released, the tape may not withstand stretch marks.
Serpyanka at the junction of drywall foxes After drying, the entire putty surface is polished with fine sandpaper, all defects are removed.
Paper tape
Paper tape for drywall seams has not lost its relevance even now, when there are many other reinforcing materials for drywall on the market. The tape is used in repair work, because it has many advantages:
- The thinness of the tape allows you to quickly level the surface after gluing.
- When mounted on a filler surface, the wet tape retains its functionality.
- Masters consider paper tape to be budgetary, since its price is relatively low.
- To use the tape, you do not need to use special mixtures and materials.
The temperature regime during installation work must be maintained within the range from +18 to +25 degrees. If the temperature is too high, the air in the room is dry, and if it is too low, the humidity is high.
How to glue paper tape to drywall joints?
Paper tape is used for finishing plasterboard joints, for. To prevent the crack from enlarging, it is cleaned by making a small depression. After they are primed. After drying, apply a thin layer of putty and glue paper tape. If air gets inside, the bubble should be punctured with a needle, the air will come out.
Before you start fixing the tape, you need to check the drywall structure for strength. With the slightest movement of the gypsum board, the tape will not help in strength.
To reinforce the gypsum board joints:
- All drywall seams must be primed.
- Once dry, the tape needs to be wetted for durability.
- A thin layer of putty is applied to the joint, and the tape is glued on top using a narrow spatula.
- All the work done is left to dry completely.
- After the elapsed time, you need to check how the tape adhered and apply another layer of putty on top.
- The final action will be to grout excess roughness and get rid of excess putty.
When installation work is carried out with a reinforcing tape, there should be no drafts. It is better to close open windows and doors.
The procedure for installing the tape on the solution Knauf paper tape has strength and durability. It does not tear or stretch under certain loads.
Tape with metal inserts.
Reinforcing tape with metal inserts Reinforcing tape with a metal insert for Knauf drywall is not used to eliminate cracks and to reinforce joints, it is intended for gypsum plasterboard corners. Durable, able to withstand not only changes in drywall during temperature changes, but also mechanical stress on external corners. The metal strip is made of non-corrosive material.