Drywall and gypsum fiber are necessarily used for walls, all kinds of decorative designs. They are used for their moisture resistance, fire resistance and excellent sound insulation qualities. The topic of our today's review of gypsum boards. What is it, GVL, GKLV and other types, their characteristics, sizes and areas of application - we’ll talk about all this in detail, and also consider how GVL and GKL differ and for what work it is better to use each of the options.
The “dry finishing” method has gained great fame for the renovation of premises. With this method, the walls and ceiling are not leveled, but with gypsum fiber or. This material allows you to reduce labor costs for carrying out.
Gypsum fiber material is a homogeneous sheet containing gypsum reinforced with cellulose fiber. GKL stands for plasterboard sheet. The material consists of gypsum, and the outer parts are made of cardboard. It comes in the following types:
- GKLO means fire-resistant material. During production, a special one is used;
- GKLV– moisture-resistant material, which contains a special substance against fungi, bacteria and mold;
This plasterboard is successfully used for internal finishing works
- combined slabs with a special polystyrene foam composition. They are used for external and internal work.
Gypsum fiber and plasterboard sheets are similar in many ways. They are used for finishing walls and ceilings. They are moisture resistant, fireproof and suitable for. These materials are environmentally friendly due to the absence of harmful resins which are toxic to humans. GKL and GVL are chosen depending on the goals.
What is gypsum board in construction: types of material
Let's take a closer look at GKL and its closest “brother” GKLV. What this is will be understood by considering the composition and features of production. The material contains 90% building gypsum, 5% pressed cardboard and 5% glue, dye and water. This material is environmentally friendly, as it does not contain hazardous components.
Plasterboard is used to level the walls and install ceilings and partitions. It allows you to bring to life the most daring design ideas: columns, niches, arches, complex multi-level structures. GKL allows you to create any shape and is used for insulation.
Most popular applications:
- GKL or standard sheets used for interior decoration of rooms with different levels;
- fire-resistant gypsum plasterboard sheets used for finishing;
- moisture-resistant plasterboard sheets GKLV differ low level water absorption and great resistance to moisture penetration. Applicable for .
When choosing a material, you need to pay attention to such characteristics as size, weight, color, edge shape and strength. Ceiling plasterboard It has maximum thickness to provide excellent noise reduction properties. Arch material has minimum thickness. Wall gypsum plasterboard can have a thickness of approximately 12.5 mm. It is used for universal works. Laminated plasterboard is also used on walls.
Drywall has the following features:
- versatility of use;
- low production costs;
- a wide range of varieties;
- ease of use;
- options for fastening sheets.
For your information! The thickness is selected depending on the purpose of the material. For plating suspended ceiling a thickness of 9.5 mm is used. For partitions and walls, a thickness of 12.5 mm is used.
GVL - what is it?
Now let's try to figure out what GVLV is. This abbreviation stands for gypsum fiber sheet, but if the letter B is added, it means that the sheet is moisture resistant. Gypsum fiber sheet consists of gypsum reinforced with cellulose fiber. This material is different high level strength, but not very reliable in bending.
The advantage of the material is that in terms of thermal insulation it is much better than plasterboard. This building material is suitable for cladding due to its fire-resistant qualities. GVL is used for cladding floors and walls in storerooms, sanitary rooms, etc.
GVL and gypsum plasterboard: what is the difference between these materials
What are the differences between gypsum board and gypsum board and which option should you choose? The choice depends on the type of room in which it will be located. Gypsum fiber is used to level walls in industrial, public or office premises. For arches, niches and columns the best option will become drywall.
Both materials are environmentally friendly and have an increased level of sound and thermal insulation. In addition, they have no specific odors, do not contain toxic substances, and they do not conduct electricity.
The table below shows the main differences between GVL and GKL:
| Indicators | GKL | GVL |
| Price | Price from 80 rubles per square meter. | More expensive material. The cost varies from 185 to 300 rubles. |
| Strength | Small. The material may crack upon impact. | High. The sheets can withstand increased loads and even impacts. |
| Installation features | There are no difficulties during cutting or fastening. Sheets of any thickness do not require complicated installation. | The parts are not so easy to process due to their hardness and significant weight. |
| Insulation parameters | Characteristics are average. At high humidity the insulation parameter decreases. | High insulating properties. Cellulose fibers have heat-retaining properties and dampen sound vibrations. |
GKL or GVL: which is better to choose
Drywall or gypsum fiber - which is better to choose? In fact, the materials are largely identical. They are made from gypsum, but different technologies. They are fireproof and moisture resistant, and are also used for interior decoration. At the same time, gypsum fiber also has certain disadvantages. The material is subject to deformation and stretching and is heavy, which makes installation difficult.
Here's what you can choose depending on the purpose of use:
- ceilings. Drywall is more suitable for finishing. The material is lighter and does not create significant loads. Light weight makes the material more convenient for installation work;
- partitions. The choice of material depends on the design. From gypsum fiber board you can make simple ones with rectangular openings. Such sheets provide a good level of sound insulation and rigidity. Drywall is more suitable for arranging an arch and creating complex decor;
- bathroom. For laying on the floor, it is better to choose gypsum fiber. The material does not absorb moisture at high humidity;
- wooden house. To level the walls, plasterboard or gypsum plasterboard can be used equally. To make a more fire-resistant structure, it is better to choose gypsum plasterboard.
Comparative technical characteristics of gypsum plasterboard and gypsum board
The table shows comparative characteristics for materials with a thickness of 10 mm.
| Options | GKL | GVL |
| Weight, kg/cub.m. | 12,5 | 18 |
| Density, kg/cub.m. | 850 | 1200 |
| Surface hardness, MPa | 18 | 22 |
| Bending density, MPa | 3,5 | 5,3 |
| Thermal conductivity, W/mS | 0,18 | 0,22 |
Geometric parameters of gypsum plasterboard and gypsum board
Let's consider the sizes of gypsum board sheets.
- length. The standard length of drywall is 2, 2.5 and 3 meters. Some manufacturers offer lengths of 1.5, 2.7, 3.3 or 3.6 meters. To cover the entire wall up to the ceiling, you should choose long sheets, as there will be fewer seams;
- width. Standard parameter– 1.2 meters. Sheets with a width of 0.6 meters are also offered. They fit easily even in a passenger car;
- thickness. For walls, the thickness of the plasterboard can be 6, 9 or 12.5 mm. Boards with fire-resistant qualities can have a thickness of 15, 18 or 25 mm. For ceilings, sheets with a thickness of 12.5 mm are selected.
The dimensions of moisture-resistant plasterboard may vary.
Gypsum fiber boards can be divided into sheets with a straight edge or with a seam. Standard sizes GVL sheets for walls are presented in the table.
Weight of gypsum board and gypsum board
It is necessary to know the weight of the gypsum board and gypsum board sheet in order to correctly calculate the load on the structure, as well as to determine the quality of the product.
Most often, the weight of a material depends on its thickness. In the table you can see the parameters of gypsum fiber boards of different thicknesses.
| Sheet thickness, mm | Description and weight |
| 10 | Such sheets are often produced in sizes 1200*2500. They are used for finishing ceilings and walls. The weight of a square meter is 12 kg, and the sheet has a mass of 36 kg. |
| 12,5 | Suitable for areas that require special strength and resistance to deformation. The weight of a square meter is 14 kg, and a slab 1200*2500 is 42 kg. |
| 15 | Durable material is used for partitions and. The weight per square meter is 18 kg. |
| 18 | Most often used for subflooring. The mass of a square meter is 20 kg. |
| 20 | This material is used for floor finishing. Square meter weighs 24 kg. |
Consider the weight of 1 m2 of gypsum board depending on the thickness:
- a sheet of material 6.5 mm thick weighs 5 kg;
- with a thickness of 9.5 mm, the weight is 7.5 kg;
- sheet with a thickness of 12.5 mm - 9.5 kg.
Important material characteristics
To make a choice, you need to understand distinctive characteristics building materials.
Strength
GVL is reinforced with cellulose fiber, which makes this material especially durable. Standard drywall does not have this treatment. Gypsum fiber is stiffer in compression and stronger in processing. Drywall is more fragile. It may break even during transportation. It is not recommended for use in rooms with high humidity.
Environmental friendliness
GVL is more environmentally friendly material. Thanks to its rigid structure, the material does not lose its strength parameters even over time. And drywall may lose its strength due to the gypsum content. In this case, the plaster can release dust, which can cause breathing problems.
Moisture resistance
Gypsum fiber can be used in rooms with high humidity, and standard gypsum board is not recommended for use in such rooms. But if you have special additives, you can also use moisture-resistant drywall. It is used in rooms with high humidity levels.
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Fire resistance
GVL has special properties that prevent it from burning. In order to protect drywall in this way, it is treated with a certain composition that does not allow the material to burn. Moreover, the products have a special GKLO marking.
Practicality
GVL is a durable, solid and heat-intensive material. It's perfect for the base. It is often used for insulation. Regular drywall is different decorative properties and it cannot be used for floor installation.
But gypsum fiber is not suitable for non-standard design indoors, since the material does not have plasticity.
Areas of application of gypsum plasterboard and gypsum board
Despite the fact that GVL has higher strength characteristics. It cannot completely replace drywall. Simple material is used to level and create walls and partitions. The simplest partition includes a lattice frame made of.
Use for partitions and walls
GKL wall cladding is often used, since this material is light in weight and does not create significant loads on the surface of the walls. Drywall is suitable for installing interior partitions and sheathing.
GVL for walls have high strength, which allows them to be used for cladding production premises. Reliable sheets are also relevant for installation in gyms. They cannot be used to process complex surfaces, but they have a long service life.
The construction of gypsum plasterboard partitions is determined by the optimal weight of such material. You can create lightweight screens for zoning, which can be easily dismantled if necessary. This material can be used to decorate walls in residential premises: for children's rooms, living rooms and corridors. When performing repairs with high humidity levels: or GVL is recommended.
For finishing the walls of the boiler room, switchboard or for other structures with rising temperatures it is better to use fire-resistant gypsum plasterboard. This material is also suitable for decorative cladding And . For cladding on unheated attic you can use GKLVO.
Features and secrets of installing gypsum boards on the wall can be seen in the following video:
Application for ceiling
The technology for installing gypsum plasterboard on the ceiling differs little from installing gypsum fiber board sheets. But there are also some peculiarities. GVL slabs They are heavy, so they are difficult to mount to the ceiling alone. Self-tapping screws are used as fastening elements.
When installing a gypsum fiber board ceiling, you need to cut the material. In this case, a manual disk or is used. All slab joints must be treated with gypsum.
When installing a suspended ceiling from gypsum plasterboard, you can get the following advantages:
- the ability to create complex configurations;
- formation of beautiful arches;
- applying any .
When installing a suspended ceiling in a bathroom, you need to choose a material with water-repellent characteristics.
Interior use
The use of gypsum fiber on the floor is especially important. In this case, panels are used to withstand high humidity. Since the material has a minimal coefficient of expansion, the joining seams will remain sealed. Interior decoration using gypsum fiber boards allows you to reduce the time required for finishing work. GVL sheets can be mounted on frames made of wood or metal. This results in a perfectly flat surface, which is suitable for painting, finishing and cladding.
A device made from gypsum plasterboard and window slopes is often used. Installation is done before it is done finishing. Drywall can be glued to plaster. On door and window openings the material must be glued over the entire surface, and not in fragments. The designs of arched openings made from gypsum plasterboard are wonderful and beautiful.
Review of gypsum boards and gypsum boards from Knauf
Gypsum fiber sheets and plasterboard "Knauf" are very popular for wall decoration. They are also used for finishing industrial buildings and public buildings. But since there is a high probability of stumbling upon a fake in the building materials market, it is always worth familiarizing yourself with the Knauf plasterboard certificates of conformity, which every decent seller should have.
Plasterboard and gypsum fiber sheets from this manufacturer have different structures.
The difference is determined in operational and technical characteristics:
- gypsum fiber has an even structure, which allows you to cut the material without chipping. Therefore, GVL can be used for parts of different sizes;
- the use of GVL is required where high impact resistance is required;
- plasterboard is characterized by excellent plasticity, which allows it to be made into structures of various shapes;
- GVL and gypsum plasterboard from this company also differ in the degree of frost resistance. In this case, drywall is designed for 4 cycles of thawing and freezing, and gypsum fiber for 15 cycles.
The table below shows approximate prices on different types GVL and gypsum board from Knauf:
| Photo | Kinds | Description | Prices, rub. |
 | GVL sheet Knauf floor element | 200x600x1200 mm. Superpol | 337 |
 | Knauf super sheet GVL | 2500x1200. With straight edge. | 487 |
 | Knauf plasterboard sheet | 300x1200x12.5 mm Used for the construction of light partitions. | 279 |
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Drywall has been known for a long time and has become one of the most popular building materials. Gypsum fiber sheets (GVL) are still less common, but in their characteristics regular drywall superior. Let's consider the features of this material and use cases.
Gypsum fiber sheet includes, of course, building gypsum, cellulose dissolved waste paper and certain technological additives. Approximately 80% of the composition is gypsum, 20% is cellulose. The main external difference between gypsum board and drywall is that it does not have outer shell, the sheet turns out homogeneous. In this case, one side of the sheet is sanded, and the panel itself is impregnated with a water-repellent agent, which acts as a primer and is used against chalking.
There is GOST R 51829-2001, which highlights the following types gypsum fiber sheets:
- GVL and GVLV, that is, ordinary and moisture resistant. In this respect, gypsum fiber is similar to plasterboard, which is also divided into two similar types, intended for dry and wet rooms.
- With straight and rebated edges.
- The standard length of GVL can be 1.5, 2, 2.5, 2.7 and 3 m. Standard width is 0.5, 1 and 1.2 m. Thickness is 10, 12.5, 15, 18 and 20 mm .
Gypsum fiber sheets are marked as follows: GVLV-PK-2500x1200x10 GOST R 51829-2001, where PK, respectively, means a straight edge.
Technical characteristics of GVL:
- The density reaches 1250 kg/m 3, which allows you to safely drive nails into gypsum fiber sheets without fear that they will begin to crumble.
- The material is warm to the touch and has a low thermal conductivity coefficient, that is, it can be used to insulate a room from the inside.
- Sound insulation, depending on the thickness of the sheet, is 35-40 dB.
- GVL do not burn; they belong to group G1 for flammability, group B1 for flammability and group D1 for smoke-generating ability.
- The material is not afraid of frost, so it can be used in rooms that are not heated, including when finishing balconies and loggias.
In terms of frost resistance, density, and sound insulation, gypsum fiber boards are significantly superior to plasterboard.
Gypsum fiber boards are especially often used for installing floors using dry technology. They can replace ordinary concrete, the room will have a more comfortable climate, and the installation process itself will be much simpler and faster.
However, the scope of application of GVL does not end there; they can be used in the following cases:
- creation suspended ceilings;
- wall cladding - in both cases, sheets with seamed edges are used;
- covering various wooden structure, which non-flammable sheets can protect against fire;
- cladding of attics, basements, balconies;
- construction of children's game rooms, courts and other sports facilities.
The positive properties of gypsum fiber boards include environmental friendliness, which allows them to be used even in children's rooms. In addition, they are more durable and wear-resistant; when cut, the edges do not crumble, like drywall. However, gypsum boards weigh significantly more than gypsum boards, which is why they are more often used for floors and walls than for ceilings. Another minus - more high price— gypsum fiber costs about twice as much as plasterboard.
Gypsum plasterboard sheets (GKL, KNAUF sheets) are a gypsum core, all planes of which, except for the end edges, are lined with cardboard. To form the core, G-4 gypsum is used, which has exceptional physical and technical properties. To achieve the required density and strength, special components are added to it. Another critical component of drywall is the linerboard. Adhesion to the gypsum core is ensured through the use of adhesive additives. Cardboard plays the role of a reinforcing frame and is an excellent basis for applying any finishing material(plaster, wallpaper, paint, ceramic tiles and etc.). Due to its physical and hygienic properties, cardboard is ideal for residential premises. KNAUF sheets are used for internal lining walls, installation of interior partitions, suspended ceilings.
GKL are divided into:
- ordinary (gypsum plasterboard)
- moisture resistant (GKLV)
- with increased resistance to open flame (GKLO)
- moisture resistant with increased resistance to open flame (GKLVO)
Feature of drywall
It is known that gypsum board, along with the existing listed characteristics, has another remarkable ability - acquiring plasticity when wet and restoring its original quality after drying, while maintaining its given shape. This significantly expands the design and architectural capabilities of gypsum board as a building material, through the ability to form almost any curved surface, be it a ceiling or a wall. In the manufacture of curved forms, plasterboard sheets with a width of 600 mm are used. It should be taken into account that the minimum bending radius of a sheet with a thickness of 12.5 mm will be approximately 1000 mm, and as the thickness of the gypsum board decreases, the radius also decreases. So, for sheets with a thickness of 9 mm, the minimum bending radius is approximately 500 mm.
GVL (gypsum fiber sheet)
Gypsum fiber sheets (GVL, KNAUF supersheets) are used for interior finishing, especially those where there are increased requirements for fire safety. They are made of gypsum no lower than G-4, with dissolved cellulose waste paper as a filler. Gypsum fiber sheets are a homogeneous environmentally friendly building material used for the construction of interior partitions, suspended ceilings and interior wall cladding in residential premises, industrial buildings, premises of social facilities and medical institutions, schools, kindergartens and sanatoriums. Produced by semi-dry pressing. GVL is used for the installation of partitions and wall cladding with increased requirements for protection against impact, for the installation of prefabricated foundations (dry screeds) for floors under coverings or in the presence of increased requirements for fire technical characteristics applied structures.
GVL are divided into:
- regular (GVL)
- moisture-resistant (GVLV) (GVLV, unlike GVL, is treated with a special water-repellent liquid, which increases the resistance of its surface to high humidity)
- moisture-resistant small-format (DIY)
- KNAUF-superfloor (GVLV EP)
Differences between GVL and GKL. Which is better to choose?
So, having examined gypsum plasterboard and gypsum board, let’s dwell separately on the differences. What should you choose? GVL is used for the construction of partitions and wall claddings with increased requirements for impact protection, that is, it is harder than gypsum plasterboard. GVL is easier to handle when sawing in any direction, as it is homogeneous in composition. GCR is less durable and is cut across so as not to disturb the cardboard reinforcement (although in some cases it is allowed), but it is capable of acquiring plasticity when soaked, and when drying, restores its original strength. Drywall is best foundation under the wallpaper. They can be glued without any pre-treatment; the only thing you need to do is cover the nail heads with nitro enamel or alcohol varnish to prevent corrosion. Or you can not paste over the walls, but, for example, whitewash or paint with glue or oil paint, like ordinary plastered surfaces. It is not recommended to use lime paints, since they do not adhere well to cardboard. The answer is clear: better than GVL or gypsum board is not possible. There is no universal answer. It all depends on the task at hand and the operating conditions of the premises.
Main profile brands for gypsum plasterboard or gypsum board
Metal profiles are used in all categories of buildings: residential, public, industrial and agricultural. They are used to form frames of various designs and purposes, including for partitions, cladding and suspended ceilings. The frames, in turn, are a rigid base for attaching drywall and gypsum plasterboard.
The main profile brands for fastening gypsum plasterboard or gypsum board:
How to cut drywall sheets correctly
When installing drywall, use solid sheets wherever possible. Cut the sheet of drywall to length so that the end of the sheet meets the support beams, joists, studs or jambs. To properly cut the sheet to length, first install it so that the end extends beyond the edge where you plan to lay the drywall. Measure the required length using a tape measure. Then use a special tool for drywall - a stripper and mark the beginning and end of the cut on the sheet of drywall with a knife. Swipe special knife cut along the length of the drywall sheet. To get the most straight line possible during the first cut, you can also apply a makeshift ruler to the drywall. For these purposes, you can use a wide metallic profile, level, etc. Tap one side of the sheet. The drywall should break exactly where the cut you made. If the end edge resulting from cutting is not smooth enough, it should be corrected with a special grater. The paper should not be allowed to peel off from the plaster because... this may have a negative impact on quality. If a paper “fringe” has formed at the end, it should be cut off with a knife. You can also use a plasterboard disc cutter for cutting. This will prevent the paper covering the bottom of the drywall core from tearing. Therefore, in order to completely separate the sheet pieces, run the blade of a knife along the cut area to separate the back covering as well. A different technology for installing drywall is used when you need to cut a sheet of drywall in places where there are internal corners. To make such cuts, use a special tool - a drywall knife. Make a cut where you want to cut the sheet and sharply bend one edge back, as described above. After this, you will again have to cut the paper covering the back of the drywall core. Another way to make the cut is to internal corner- first secure a sheet of drywall in the place where you are making the ceiling, and then use a knife - a drywall tool - to make the desired hole.
Cutting out shaped parts from plasterboard
To obtain a part with uneven edges (arc, wave, zigzag, etc.), you can use a special file to work with drywall, but when using it, the sheet may crumble and the edge of the part will turn out uneven. If you try to align the edge, the dimensions of the part may change. In such cases, it is much easier and more convenient to use a jigsaw to work with drywall.
Drilling drywall
Often for mounting recessed lighting fixtures, etc. Drywall holes required. Small holes are drilled with ordinary drills, and larger ones (for halogen lamps, various pipes and so on.) - special files for work on drywall or drilled with crowns.
Bending drywall
To create arches, figured ceilings and some other structures, it is necessary to obtain curved parts. There are several ways to work with drywall to bend a piece.
First way. Wet the part and, when it becomes flexible, give it the desired shape. After drying, the part can be mounted. This method of working with drywall, of course, makes it possible to obtain a curved part, but it will require a significant investment of time, which will not please customers very much.
Second way. Use a special spiked roller (needle roller). It is used to pierce paper with outside the intended bending of the drywall, and then the part is bent by applying physical strength. As a result, the paper is torn due to punctures and makes it possible to bend the part. The method is quite effective, but it will require special skills, and the part can be difficult to screw on, and before puttying it will look completely unaesthetic.
Third way working with drywall to bend a part consists of cutting the outer side of the intended bend at intervals of approximately 5 cm. Depending on the steepness of the bend, the interval may vary. Then the part is broken at the places of the cuts and bent to the required extent. The part prepared in this way is easy to install and requires a minimum amount of time to manufacture.
Drywall installation
First of all, it should be noted that there are many systems and methods for installing drywall in the world. Let's look at the most popular of them:
First way. Installation is carried out using so-called adhesive compounds. This, one might say, is the simplest method of installation: on a previously prepared (cleaned of old wallpaper, plaster, etc. and properly primed) wall surface (installation of plasterboard ceilings in this way according to natural reasons not carried out) applied adhesive composition, prepared in accordance with the manufacturer's instructions. The glue should be applied in “patches” at a distance of no more than 35 cm from each other, with the exception of the corners of the room and the joints of sheets, where the glue is applied in a continuous layer. Also, when applying glue, you should take into account the individual slope, curvature, and deformation of the wall, i.e. In convex areas, less glue should be applied, and vice versa. In places where the depressions are too large, you should first glue a strip of drywall, as if leveling the surface. You can check these characteristics using a level and a thread stretched along the wall. After applying the adhesive, a pre-cut sheet of drywall is pressed against the wall. Next, using a level and skillful hands the sheet is aligned in the plane we need. Sometimes, when installing plasterboard with an adhesive compound, strips of plasterboard (so-called “beacons”) about 15 cm wide are first glued to the wall, and the sheet itself is glued directly onto them. At the same time, do not forget to let the glue dry. The advantages of this method are simplicity, high speed of installation and no need for a special set of tools. The disadvantages include the impossibility of creating new partitions and niches: in addition, this method does not allow laying sheets on a wooden base.
Second way. Installation of drywall is carried out on a frame made of wooden blocks. Installation of drywall on a frame made of bars was popular about ten years ago, due to the shortage of metal profiles that existed at that time. This method consists of two stages: assembling a frame from bars and actually installing plasterboard sheets on a wooden frame. The assembly of a frame from bars begins with the alignment and subsequent fixation of the guides. Depending on the material to which the beam is attached, the appropriate fastening is selected, most often it is a dowel nail (if the base is concrete, brick, etc.) or a self-tapping screw with a large pitch (if the base is wooden). To set the guides, as well as the entire frame, a level and strips of veneer are used, which, if necessary, are placed under the bars. After installing the guides, the main bars are set and fixed. They should be installed no more than sixty centimeters from each other, i.e. so that each sheet of drywall is attached at least at the edges and in the center, and the edges of adjacent sheets are attached to one bar. Before installing pre-cut plasterboard sheets, you should make sure that the assembled frame forms one plane, and, if there are any shortcomings, eliminate them. Drywall is attached to wooden frame using wood screws. In this case, the distance between the screws should not exceed thirty centimeters, and the screws themselves should be screwed into the drywall in such a way that their heads are slightly recessed, but without allowing the paper to tear. Compared to the previous method of installing drywall, this method has a number of significant advantages. These, first of all, include the possibility of creating new structures, such as arches, partitions, niches, etc.; in addition, we get the opportunity to change forms existing walls and partitions. However, this is a more labor-intensive method that requires a special tool. We should also not forget that with changes in temperature and humidity, wood tends to deform, which cannot but affect the quality of the entire structure.
Third way. Installation of drywall using a metal frame. A metal profile is used to create the frame. The assembly of the metal frame, as in the previous case, begins with the alignment and subsequent fixation of the guides. A level is used to set the guides, as well as the entire frame. The difference is that the main profile is fastened using special fittings, called “suspension”, and metal screws. The use of hangers allows you to simultaneously attach the metal profile to the wall and align it in the desired plane, which greatly simplifies the process of installing drywall. Suspensions should be located at a distance of no more than seventy centimeters from each other, and the main profile should be installed no more than sixty centimeters from each other, i.e. so that each sheet of drywall is attached at least at the edges and in the center, and the edges of adjacent sheets are attached to the same profile. Drywall is attached to the metal frame using metal screws. In this case, the distance between the screws should not exceed thirty centimeters. Installation of drywall on a metal frame is the most in a relevant way today, because it, while retaining almost all the advantages of other methods, is not burdened with their disadvantages. In addition to all the advantages when using a metal frame, it is also possible to hide electrical wiring, heating radiators, pipes, etc. under plasterboard, and install built-in lighting– halogen lamps, etc. The disadvantages of this method include the need for special tool and qualified specialists.
Security measures
Gypsum dust can cause eye and respiratory irritation. Therefore, you should take care in advance to protect your eyes and lungs. To do this, you must use safety glasses and a mask or respirator, and also ensure proper ventilation repair locations. Carefully study the purpose of each tool and use these tools only for those applications for which they are specifically intended. Unsharpened tools are dangerous and can become a hindrance, or even cause harm to your work. Always use sharp blades. Keep track of your drywall tools and keep them in safe places. Always turn off the electricity in the room if you work in a potentially fire hazardous area. Be careful when working on sawhorses scaffolding and stairs. We must not forget that when installing a construction ladder, all its legs must be firmly on the ground. Never try to reach to the side or upward when working on a ladder. Keep children away from the construction site and keep them away from power tools and construction materials, solvents, etc., which may be hazardous to their health. Keep the work area clean and do not allow debris and waste to accumulate on the construction site.
Today, a real construction boom is caused by two new materials - gypsum plasterboard and gypsum fiber board. They are used in the now popular “dry” construction. Its essence is that the number of technological steps is reduced, including the need to dry the material. Accordingly, the entire workflow goes much faster.
Many people mistakenly believe that gypsum plasterboard and gypsum fiber board are almost the same materials. Yes, they have similarities, but they are significantly different from each other. To find out what the difference is, let's define each of them.
What are GKL and GVL
GKL are plasterboard sheets, filled with gypsum inside, framed with cardboard on the outside (except for the end part). Additional strength is given to gypsum by special components that connect the inner and outer layers of plasterboard. Cardboard adheres well to plaster thanks to additional adhesives. Plasterboard sheets are used for finishing ceilings and walls; they are also used to make interior partitions. Due to the fact that the outer layer of gypsum board is cardboard, it is convenient to apply finishing materials to it.
GVL is a homogeneous and very durable sheet of gypsum fiber. Resistance to deformation is explained by manufacturing technology: dry pressing turns gypsum fiber board into the strongest material, widely used in construction. Dry screeds are made from it, and gypsum fiber is also suitable for work that requires the application of strong shock or mechanical stress to the material.
What is the difference between gypsum board and gypsum board
Both materials are in demand in construction, however, the purposes of use for gypsum plasterboard and gypsum fiber board differ. To understand which sheets to choose, you should familiarize yourself with their main characteristics in comparison. In terms of hardness, hypofiber is much better, while plasterboard is quite plastic, bends and cuts well, but it has very low fire resistance. But GVL burns poorly, but it is expensive. GCR is more affordable, and, perhaps, this is the main advantage of this material.
The initial difference between gypsum board and gypsum fiber lies in the production method. GCR is made by pressing gypsum and gluing cardboard over it. GVL is obtained as follows: pulp is made from crushed waste paper, which is mixed with gypsum and pressed. It is the initial homogeneity of gypsum fiber that makes it stronger than drywall. The fire resistance of GVL plays an important role; this characteristic makes it attractive for industrial construction. GCR is mostly used to level out uneven walls and ceilings with the possibility of their subsequent finishing.
So, it remains to summarize.
Construction practice shows that plasterboard sheets are more often used for residential buildings, since they are relatively cheap and easy to bend and cut. Gypsum fiber sheets are more attractive for finishing production workshops, since they are fire resistant, but their cost is much more expensive.
Such products are quite often used in the field of construction and repair - for leveling surfaces, changing their configuration (relief), and installing partitions. It makes no sense to list everything. The presence of the word “gypsum” in their names indicates that these materials are practically the same and are nothing more than analogues.
This often causes some confusion, and makes it difficult for a person who is inexperienced in special terminology to make a choice. optimal option for a specific situation.
Drywall (GKL)- a sheet whose base is pure gypsum (pressed), covered on both sides with thin cardboard. Hence the name.
Gypsum fiber (GVL)– the basis is the same, but there are differences. The “core” consists of gypsum, to which small paper fractions have been added ( cellulose fibers). Therefore, GVL is a material with additional reinforcement. But there is no “shell” made of cardboard.
It is this difference in production technology that determined the differences in some properties of the materials and determined the specifics of their application.
GKL
- Drywall has insufficient mechanical strength (even brittleness), so its installation requires a rigid one. Before gluing onto a solid base, it must be perfectly leveled, since even with minor mechanical loads the sheet easily breaks.
- GCR is quite pliable when moistened with water. It is this feature that is used in cases where it is necessary to mount a shaped structure, for example, an arched type. Or round the corner of the room.
- The sheets are fixed either with glue or with self-tapping screws. But the nail will not stay in the plasterboard - it will only pierce it.
- Cutting is not difficult - a sharp blade is often sufficient.
On a note! It is believed that gypsum boards can be attached to any base. This is not entirely true, and clarification is required - only on a vertically oriented one. Therefore, to arrange multi-level ceilings it is not advisable to use them.
GVL
- Gypsum fiber sheets are stronger and stiffer than gypsum board.
- The density (and, therefore, the weight of gypsum fiber board) is also higher. Hence, the thermal resistance is greater than that of plasterboard.
- Reinforcing fibers reduce the flexibility and pliability of the material. This complicates its cutting, and it is definitely not suitable for making arches.
- Resistance to sub-zero temperatures higher than that of gypsum plasterboard, approximately 3.5 times.
- A certain “viscosity” of the structure leads to the fact that a nail driven into a sheet holds in it no worse than in wood.
- Gypsum fiber does not absorb moisture as intensively as gypsum plasterboard. Therefore, these sheets can be used to decorate rooms such as toilets and bathrooms. But we must not forget that, after all, GVL also has a certain limit of resistance to liquids.
- The indicator exceeds the similar characteristic of drywall by 1.5 times.
Perhaps this is the fundamental difference between gypsum fiber and drywall. All their other parameters are almost identical - operating temperature range, hygiene, and so on.
Conclusion - despite the apparent “identity” of the materials, where the surface finished with sheets will experience increased load, including dynamic load (for example, a floor), preference should be given to GVL. And to create structures with complex geometry, you should choose drywall.
On a note! Each type of product is produced in various “modifications”, which differ in certain characteristics. Before purchasing a gypsum-based product, all the features of a particular sample need to be further clarified.
Price
Sheets of both materials are available in various sizes, thicknesses, and varieties. Therefore, if we summarize all the data, it turns out that on average gypsum boards are approximately 1.8 - 2.2 times more expensive than similar gypsum boards. This probably partly explains why the latter have found wider application in everyday life.