Today, a real construction boom is caused by two new materials - GKL and GVL. 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 is much faster.
Many people mistakenly believe that GCR and GVL are practically the same materials. Yes, they have similarities, but they differ significantly from each other. To find out what the difference is, let's define each of them.
What is GKL and GVL
GKL are gypsum plasterboard sheets filled with gypsum inside, framed with cardboard outside (except for the end part). Additional strength to gypsum is given by special components that connect the inner and outer layers of the gypsum board. Cardboard adheres well to gypsum due to additional adhesives. Plasterboard sheets are used for finishing the ceiling and walls, they are also used for interior partitions. Due to the fact that outer layer GKL cardboard, it is convenient to apply finishing materials to it.
GVL is a homogeneous and very durable gypsum fiber sheet. Resistance to deformation is explained by the manufacturing technology: dry pressing turns gypsum fiber board into the strongest material widely used in the construction business. Dry screeds are made from it, and gypsum fiber is also suitable for work that requires a strong impact or mechanical impact on the material.
What is the difference between GKL and GVL
Both materials are in demand in construction, however, the purposes of application for GKL and GVL are different. To understand which sheets to choose, you should familiarize yourself with their main characteristics in comparison. In terms of hardness, gypsum fiber is much better, drywall is quite plastic, it bends and cut perfectly, but it has a very low fire resistance. But the GVL burns badly, but it is expensive. GKL 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. GKL 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 the 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. GKL, on the other hand, is mostly used to level the unevenness of walls and ceilings with the possibility of their subsequent finishing.
So, it remains to summarize.
Construction practice shows that gypsum plasterboards are more used for residential buildings, since they are relatively cheap and easily bend and cut. Gypsum sheets are more attractive for finishing workshops, as they are fire resistant, but their cost is much more expensive.
Recently on the market building technologies more and more attention is paid to the so-called "dry" construction methods. This significantly reduces the time required to complete the work, reducing the number of technological operations and eliminating the need for drying the material. Among the most common materials currently used in construction are GKL and GVL. Many have heard about them, but few know how they differ. And the difference is significant.
Definition
GKL is a gypsum plasterboard with a core made of gypsum. Moreover, all its edges, except for the end part, are lined with cardboard. From these main components, the name of the material is formed. To give the material sufficient strength, binders are added to the gypsum used. The cardboard itself, which is a good basis for the subsequent application of any finishing materials, has good adhesion to gypsum due to special adhesives. Plasterboard is used for the treatment of walls and ceilings, as well as for the manufacture interior partitions.
Gypsum plasterboard
GVL- gypsum fiber sheet, which is a homogeneous material used in construction. Its main feature is the high strength of the material. This is due to the technology of its production. The dry pressing method used for this allows obtaining a very strong structure, which led to a wide GVL application when constructing structures exposed to shock and other mechanical influences during operation. The material is in great demand in the manufacture of dry screeds.
Gypsum fiber sheet Comparison
As you can see, both materials under consideration are of great interest. It is very difficult sometimes even for professionals to choose which one is preferable. Everything will depend on the specific task that the material will be called upon to perform. Some distinctive features can be tabulated.
The main differences between drywall and gypsum fiber lie in the technology of their production. If a sheet of drywall is obtained by pressing gypsum with gluing cardboard, then in the case of gypsum fiber, everything happens a little differently: in this case, gypsum is reinforced with cellulose, which is obtained by crushing waste paper. This crushed waste paper is pre-mixed with gypsum, which has special additives, and then pressed.
The result of this process is the increased strength of gypsum board, in contrast to the gypsum board, as well as increased fire-resistant properties, which is highly valued in both civil and industrial construction. As for drywall, it is of particular interest for leveling walls before the subsequent application of finishing materials. The material is smoother and does not require additional processing.
Conclusions site
- GKL is a very popular material, since it is easy to cut and bend, which is especially appreciated when designing false ceilings and other design elements;
- GVL has a high fire resistance, which allows it to be widely used in production shops;
- GVL is a more durable material that is used for the installation of partitions;
- Drywall is a cheaper material.
Gypsum plasterboards (GKL, KNAUF sheets) are a gypsum core, all planes of which, except for the end edges, are lined with cardboard. To form the core, gypsum G-4 is used, which has exceptional physical and technical properties... To achieve the required density and strength, special components are added to it. Another important component of drywall is facing cardboard. 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, etc.). In terms of its physical and hygienic properties, cardboard is ideal for living quarters. Knauf sheets are used for interior cladding walls, installation of interior partitions, false ceilings.
GKL are subdivided into:
- conventional (gypsum plasterboard)
- moisture resistant (GKLV)
- with increased resistance to open flame (GKLO)
- moisture resistant with increased resistance to open flame (GKLVO)
Drywall feature
It is known that GCR, along with the listed characteristics, has another remarkable ability - acquiring plasticity in a wet state and restoring its original quality after drying, while maintaining the shape given to it. This significantly expands the design and architectural possibilities of gypsum board as a building material, by the possibility of forming almost any curved surfaces, be it a ceiling or a wall. In the manufacture of curved forms, gypsum plasterboards with a width of 600 mm are used. It should be borne in mind that minimum radius bending of a sheet with a thickness of 12.5 mm will be approximately 1000 mm, and with a decrease in the thickness of the gypsum board, 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-superlists) are used for interior decoration, especially those where there are increased requirements for fire safety... They are made of gypsum not lower than G-4, with loose 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) of the floor for coatings or in the presence of increased requirements for the fire-technical characteristics of the structures used.
GVL are subdivided into:
- conventional (GVL)
- moisture resistant (GVLV) (GVLV, in contrast to GVL, is treated with a special hydrophobic liquid, which increases the resistance of its surface to high humidity)
- moisture resistant small format (DIY)
- KNAUF-superpol (GVLV EP)
Differences between GVL and GCR. What is the best choice?
So, having considered the GCR and GVL, we will dwell separately on the differences. What should you choose after all? GVL is used for the construction of partitions and wall cladding with increased requirements for protection against impact, that is, it is harder than GKL. GVL tolerates sawing more easily in any direction, as it is homogeneous in composition. GCR is less durable and is cut across so as not to disturb the reinforcement made of cardboard (although in some cases it is allowed), but it is capable of acquiring plasticity when soaked, and restoring its original strength when dried. Drywall is best base under the wallpaper. They can be glued without any preprocessing, the only thing that needs to be done is to cover the heads of the nails with nitro enamel or alcohol varnish to avoid corrosion. And 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 only lime paints, as they do not adhere well to cardboard. Answer unequivocally that better GVL or GKL is impossible. There is no one-size-fits-all answer. It all depends on the task and the operating conditions of the premises.
The main brands of a profile for gypsum board or gypsum plasterboard
Metal profiles are used in all categories of buildings: residential, public, industrial and agricultural. They serve to form frames of various designs and purposes, including partitions, claddings and suspended ceilings. Frames, in turn, are a rigid base for fastening drywall and gypsum plasterboard.
The main brands of profiles for fixing gypsum boards or gypsum plasterboards:
How to properly cut drywall sheets
When installing drywall, use solid sheets wherever possible. Cut a sheet of drywall to length so that the end of the sheet falls on support beams, rungs, racks, or jambs. In order to properly cut the sheet to length, first set it so that the end protrudes beyond the edge to which you plan to lay the plasterboard. Measure the required length with a tape measure. Then use a special tool for drywall - a rail and mark with a knife on a sheet of drywall the place of the beginning and end of the cut. Make a cut along the length of the drywall sheet with a special knife. To get the most straight line during the first cut, you can also attach an impromptu ruler to the drywall. For these purposes, you can use a wide metal profile, level, etc. Slap one side of the sheet. The drywall should break exactly where the cut you made. If the end edge resulting from cutting is not even enough, then it should be corrected with a special float. Do not allow the paper to peel off from the plaster. this can negatively affect quality. If a paper "fringe" has formed at the end, it should be cut off with a knife. You can also use a drywall disk cutter to cut. This will not tear the paper covering the bottom of the plasterboard core. Therefore, in order to completely separate the pieces of the sheet, run the blade of the knife along the cut to separate the back cover 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 an incision in the place where you want to cut the sheet and bend one edge sharply back, as described above. After that, you will again have to cut the paper covering the back of the drywall core. Another way to make an incision for inner corner- first fix the drywall sheet in the place where you make the overlap, and then with a knife - a drywall tool, make the desired hole.
Cutting curly parts from drywall
To get a part with uneven edges (arc, wave, zigzag, etc.), you can use a special file for working with drywall, but when using it, the sheet may crumble and the edge of the part will turn out to be 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 the installation of built-in lighting fixtures, etc. drywall holes required. Small holes are drilled with ordinary drills, and larger ones (for halogen lamps, various pipes, etc.) - with special files for working on drywall or drilled with crowns.
Bending drywall
To create arches, curved ceilings and some other structures, you need to get curved parts. There are several ways to work with drywall to bend a part.
The first way. Wet the part and, when it becomes flexible, give it the required 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). With its help, the paper is pierced with outside the expected bend of the drywall, and then the part bends by applying physical strength... As a result, the paper tears 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 problematic to screw on, and before the putty it will look completely unaesthetic.
The third way working with drywall to bend a part consists in notching the outside of the intended bend with an interval of about 5 cm. Depending on the steepness of the bend, the interval may vary. Then the part is cracked at the cuts and bent to the required degree. The part prepared in this way is easy to assemble, and its production will require minimal amount time.
Plasterboard installation
First of all, it should be noted that there are many systems and methods for installing drywall in the world. Let's consider the most popular ones:
The first way. Installation is carried out using the so-called adhesives. This can be said to be the simplest installation method: an adhesive composition is applied to the previously prepared (cleaned of old wallpaper, plaster, etc. and properly primed) wall surface (installation of plasterboard ceilings in this way, for natural reasons, is not carried out), prepared according to the manufacturer's instructions. The glue should be applied with "cakes" 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 the sheets, where the glue is applied in a continuous layer. Also, when applying glue, individual slope, curvature, deformation of the wall should be taken into account, i.e. less glue should be applied in convex areas, and vice versa. In places where the depressions are too large, you should first stick 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 drywall sheet is pressed against the wall. Further, using the level and skillful hands the sheet is exposed in the plane we need. Sometimes, when installing drywall on an adhesive composition, first strips of drywall (so-called "beacons") about 15 cm wide are glued to the wall, and the sheet itself is glued directly to them. In this case, 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. The 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: the assembly of the frame from the bars and the actual installation of the drywall sheets on the wooden frame. The assembly of the frame from the bars begins with the exposure and subsequent fixation of the guides. Depending on the material to which the timber is attached, an 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 expose the guides, like the entire frame, a level and veneer strips are used, which, if necessary, are placed under the bars. After installing the guides, the main bars are exposed and fixed. They should be installed no more than sixty centimeters apart, i.e. so that each sheet of drywall is attached at least along the edges and in the center, and the edges of adjacent sheets are attached to one bar. Before installing pre-cut drywall sheets, make sure that assembled frame forms one plane, and, if there are deficiencies, eliminate them. Drywall is attached to wooden frame using self-tapping screws for wood. 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 caps are slightly recessed, but without allowing paper breaks. Compared to the previous drywall installation technique this way has a number of significant advantages. These include, first of all, the possibility of creating new structures, such as arches, partitions, niches, etc .; in addition, we get the ability to change the shape of existing walls and partitions. However, this method is more laborious and requires a special tool. It should also not be forgotten 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 exposure and subsequent fixation of the guides. To set the guides, like the entire frame, a level is used. The difference lies in the fact that the fixing of the main profile is carried out by means of special fittings, called "suspension", and self-tapping screws for metal. The use of suspensions allows you to simultaneously attach the metal profile to the wall and set it in the desired plane, which greatly facilitates 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 along the edges and in the center, and the edges of adjacent sheets are attached to one profile. Drywall is attached to the metal frame using self-tapping screws for metal. In this case, the distance between the screws should not exceed thirty centimeters. Installation of drywall on a metal frame is the most in an up-to-date way today, since he, 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 drywall, 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 irritate the eyes and respiratory tract. Therefore, care should be taken in advance to protect the eyes and lungs. To do this, you must use protective goggles and a mask or respirator, and provide proper ventilation the place of the repair. Study the purpose of each tool carefully and only use these tools for the operations for which they are specifically designed. Untreated tools are dangerous and can interfere or even harm your work. Always work with sharp blades. Keep an eye on your drywall tools and keep them in a safe place. Always turn off the electricity in the room when working in a potentially fire hazardous area. Be careful when working on the goats, 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 while working on a ladder. Make sure that children do not appear on construction site and keep them away from power tools and building materials, solvents, etc., which may be hazardous to their health. Keep the work area clean and free of debris and waste from accumulating on the construction site.
Photo: ShutterStock / Fotodom.ru. It is not easy for an ordinary consumer to find the difference between gypsum board made according to the old and new standards. However, professionals will surely appreciate the opportunities that the new standard opens up.
It is quick and easy to erect, dry construction technology helps to create the basis for decorative. They are based on - metal carcass and sheathing of various sheet materials. Due to the low weight of parts ready-made structures, for example, they are obtained much lighter than those erected from bricks, concrete blocks, tongue-and-groove slabs.
In addition, the latter require subsequent plastering and other wet processes for the final leveling of the surface. And the thicker the plaster layer, the longer it dries and the longer it takes before finishing... In dry construction, labor-intensive wet processes are minimized, which significantly reduces the repair time.
Drywall
The most popular sheet material is drywall (GKL). It is a rectangular flat element made of a gypsum layer (core), lined with special cardboard on both sides. The longitudinal edges of the sheet are seamed with the edges of the face layer of the cardboard, the end edges remain open.
To reach high operational properties gypsum core (density, strength, etc.), special modifying additives are introduced into its composition. Facing cardboard serves as a reinforcing frame, and also serves as a basis for application finishing materials: decorative plaster, paint, wallpaper, ceramic tiles.
Photo: KNAUF. The front and back sides of the gypsum-fiber Knauf-super-sheet are treated with an effective water repellant, sanded and treated with an anti-chalking impregnation
The sheets are environmentally friendly, odorless, do not contain or emit substances harmful to human health. Like all gypsum-based materials, they have the ability to breathe, that is, absorb excess moisture out of the air and release it into environment with a decrease in humidity. Gypsum is non-combustible, fire-resistant and contains about 18% water of crystallization (with a sheet thickness of 12.5 mm, this is about 2 l / m²). That's why building construction made of gypsum plasterboard have high fire resistance. In case of fire, they retain their integrity and insulating ability for a long time, slowing down the spread of fire.
Photo: KNAUF. Perforated paper tape KNAUF (0.05 × 50 m) is intended for reinforcing joints of gypsum board and gypsum plasterboard different types(150 rubles / piece)
Plasterboard is produced by KNAUF, Saint-Gobain ( trademark Gyproc), Volma, BelGips. Common sizes of plasterboard: thickness 9.5 and 12.5 mm; width 600, 900, 1200 mm; length 2500 and 3000 mm. The price of a sheet is 2500 × 1200 × 12.5 mm - from 190 rubles.
Photo: Saint-Gobain. Installation of GKL and GVL is carried out at a temperature not lower than 10 ° С
(v winter time with the heating on), in dry and normal humidity conditions, when all wet processes are finished, before the installation of clean floors
GKL = GSP
Since January 2015, the new "Interstate Standard 32614-2012 (EN 520: 2009) - Plaster Building Plates" has been in effect. Since that time, gypsum plasterboards (GKL) are called "gypsum building boards" (GSP) and the number of types has increased significantly. Previously, there were four of them: ordinary (GKL), moisture resistant (GKLV), fire resistant (GKLO) and moisture resistant (GKLVO). The new standard contains eight types, including slabs of a given density, increased strength, slabs with increased surface hardness, etc. And most importantly, these are different useful qualities can be combined with each other to obtain materials that differ even more in properties, including for new areas of application.
Gypsum fiber sheet
Gypsum fiber sheet (GVL) is a pressed board made of a mixture of a gypsum binder and fluff cellulose fibers evenly distributed in it, which play the role of reinforcing elements. The material is hard, durable, has excellent fireproof and soundproof properties. It is used for cladding walls, ceilings, and creating partitions.
For places where the material must withstand the effects of moisture with periodic moistening and drying, moisture resistant gypsum fiber sheets(GVLV). Their front and back surfaces are highly resistant to moisture penetration. Compared to drywall, gypsum fiber sheets have increased strength. Therefore, they are used as a base for finishing floor coverings in rooms with dry or normal humidity regime... When it is GVL, they will provide a high degree of fire safety, as well as simplicity and reliability of the design.
Typical dimensions of GVL: 2500 × 1200 × 12.5 / 10 and 1200 × 1200 × 10 mm. Small-format sheets are convenient on floors where it is important to control the evenness of the base, and in small areas it is more convenient to do this. Gypsum-fiber sheets are produced by Knauf, Saint-Gobain (trade mark Gyproc), USG. The price of a sheet is 2500 × 1200 × 12.5 mm - from 470 rubles.
Selection criteria for sheet material
Photo: KNAUF. Installation of a prefabricated sub-floor made of small-format Knauf-superlists (GVLV) with a straight longitudinal edge
The choice of a particular sheet material is determined by many factors. For example, in country houses permanent residence it is practically unlimited. It is only important to take into account the specific operating conditions of sheets for finishing. For rooms with normal humidity, an ordinary GKL is suitable, with an increased one, as in bathrooms and kitchens, - GKLV.
In homes, it is advisable to pay attention to the frequency and duration of these periods, say a six-month stay from spring to autumn or rest every weekend throughout the year. If, in the absence of the owners, the minimum required temperature of +5 ° C is maintained for a week, it is permissible to use moisture-resistant drywall.
If the temperature in the house is not much higher than the outside temperature, experts recommend using GVLV. They can withstand fluctuations in temperature and humidity without significant deformation. Note that an insignificant increase in geometric dimensions with an increase in humidity is a natural process not only for GCR, but also for GVL, but in the latter it is significantly less. In such close to "extreme" conditions, they will last longer and will be a more stable and reliable base for finishing.
In corridors, storerooms, boilers, the impact resistance of sheet materials is important. GVL, as harder, durable material, transfers loads and accidental shocks without significant consequences, which means that it increases the maintenance-free service life of the finish.
Photo: ShutterStock / Fotodom.ru. Before installing the sheets, wiring and other communications are placed in the frame cavity. This process is much easier and faster than time-consuming wall chasing.
Accuracy comes first
Often among craftsmen who are accustomed to working with drywall, when switching to gypsum fiber sheets, the amount of spoiled material increases. The fact is that drywall forgives a rather careless attitude during transportation and installation, mainly due to the cardboard cladding. Whereas gypsum fiber sheets are a harder material. Claddings and partitions made of it withstand increased mechanical stress, heavier objects can be hung on them, however, the gypsum fiber sheets should be handled more carefully and carefully during transportation and installation.
Onsite, gypsum fiber sheets and drywall should only be stored horizontally (flat) on flat surface.
The basic principles of working with gypsum fiber sheets are identical to working with drywall. For installation use the same metal profiles: rack-mount and guide rails. But for attaching gypsum fiber sheets to the frames, there are special self-tapping piercing or drilling screws with a double thread and a countersink head. Professionals know about this. But amateur craftsmen can mistakenly take ordinary drywall screws. However, to drown them in solid body the sheet will not work. The hats will protrude. And so that they do not peep through the finishing layer of paint or wallpaper, the surface will need to be leveled with a rather thick layer of putty. Waste time and money on additional work you will not have to if you purchase screws intended for GVL with a special thread and a reduced head.
Andrey Udalov
Product manager for dry construction at KNAUF
All over the world "dry" construction has been actively used for decades. This term came to our country in the 90s. Hearing this phrase, a person not associated with construction or renovation works, will not immediately be able to understand what in question... This term is used for works in which the use of mortars and mixtures for leveling the geometry of the room is minimized. Components for "dry" repair and construction - drywall, gypsum fiber and accessories.
Drywalls
Why has this type of construction become more popular than the standard, proven over the years, types of surface leveling and masonry? Because dry construction has brought whole line pluses, compared with "wet" counterparts:
- the productivity of work is several times higher than in the case of "wet" construction;
- all materials are environmentally friendly and easy to work with;
- This is a great way to hide pipes and electrical wiring;
- the difference in the load on the floor differs by 3-4 times;
- minimum dust level;
- a massive concrete mixer is not required, which is difficult to place in a multi-storey building;
- "dry" floor screed does not damage the walls.
A big plus of the "dry" type of construction is that all components are universal, easily adjusted to the parameters of the premises. And making repairs with your own hands using drywall or gypsum fiber will not be difficult even for inexperienced builders.
Differences between GKL and GVL
The construction market offers an extensive selection of each of the presented materials. Gypsum board is 1200 x 2500 mm sheets (standard), which are composed of gypsum with components and are lined with cardboard on both sides. The scope of application of gypsum board is wide, they are used to create partitions, arches, multi-level ceilings, leveling walls. There are four types of drywall that are on the building materials market:
- conventional gypsum boards;
- moisture resistant sheets, treated with special components, cardboard on such a green sheet, which makes it possible to distinguish gypsum plasterboard from gypsum plasterboard;
- GKLO - refractory sheets that are able to resist direct impact fire for at least twenty minutes, GKLO is red;
- GKLVO - universal sheets that are used in industrial premises... They have moisture resistant qualities and at the same time are sufficiently refractory.
Standard, moisture-resistant and fire-resistant type of gypsum board GCR was invented back in 1894 in the USA, when O. Sackett received a patent for a material consisting of ten layers of paper glued with gypsum mortar. Already fifteen years later, the design was improved by S. Kelly.
GVL or gypsum fiber sheets are similar to gypsum boards, but the gypsum contains cellulose reinforcement and special additives. Gypsum fiber does not have a cardboard shell, its structure is homogeneous. And the strength of gypsum fiber board is 3-4 times higher than that of gypsum plasterboard sheets. Standard 1200x2500 mm and 1200x1500 mm. There are two types of sheet edges - straight and folded. The scope of application of the sheets does not imply the installation of arched or curly structures, since the gypsum fiber is weakly bending. Two types of GVL are produced - standard and moisture resistant, which is designated by the manufacturer as GVLV.
A homogeneous gypsum fiber sheet has no cardboard layers Why is gypsum plasterboard ideal for floors and bathrooms, and why gypsum plasterboard is perfect for creating designer renovations
As mentioned above, gypsum fiber is stronger than gypsum plasterboard. This allows it to be used for dry floor screed. Such a screed is made in at least two layers and allows you to create an even, dry and durable floor. Laying such a floor is quite simple, this task is easy to cope with even without experience in laying floors, if you follow the technology. Anything is put on gypsum fiber flooring- laminate, tiles, linoleum, boards. GVL also has good level heat capacity, it insulates the floor well, it is used to create a warm floor with underfloor heating. Drywall has lower strength values, and its susceptibility to crumbling and excessive softness make it impossible to use it on the floor. Therefore, when working with a floor, GVL is an obvious choice.
Dry screed Builders use gypsum blocks to create wall partitions and suspended ceilings. Due to its strength, it is easier for him to hold the weight of doors, shelves, wall cabinets and other interior items. The websites of GVL manufacturers strongly recommend the use of GVL along the evacuation route from buildings and in rooms with increased risk ignition. You can also use fire-resistant gypsum board, which is treated with special components (GKLO), but its refractoriness is still lower than that of gypsum fiber.
If we talk about creating multi-level ceilings with decorative lamps, then drywall is out of competition here. GKL with a thickness of 6 and 9 mm bends perfectly, and to give the material increased elasticity, there are special needle rollers on sale. In modern construction, arches and curly multilevel ceilings, boxes and niches in rooms and even whole walls with big amount curly elements. Therefore, drywall is so loved by interior designers.
Curly arches and drywall partitions What material is preferable in the bathroom and in the kitchen?
If we talk about rooms with high humidity, then here it is necessary to take into account the pros and cons of each material. Standard drywall easily exposed to moisture. In rooms with high humidity it is required to apply GKLV. It is desirable to cover such walls with tiles, it will help repel moisture from the drywall. But in such rooms, you still have to deal with high humidity.
A bathroom in which drywall is used must be supplied with an electric fan for pulling out humid air from the premises. Otherwise, it may happen that over time the walls will lose their shape and become unusable.
beautiful interior using drywall Gypsum fiber with treatment with antifungal and moisture resistant components is also produced. Such sheets are called GVLV, they are also successfully used in bathrooms. If the budget allows you to purchase gypsum fiber sheets instead, then it is better to do just that. You can create boxes for hiding plumbing pipes and communications using GKLV.
Drywall and gypsum fiber. What's better?
It is impossible to give an unequivocal answer to this question. There is no consensus among professionals - there are supporters of each of the materials. Those who prefer fibrous gypsum will say that it is stronger and more reliable. And those who use gypsum plasterboard will definitely point out its versatility and a more favorable price compared to gypsum fiber. Note that these two materials are great for dry construction and create reliable structures for years to come. The difference in price, by the way, is not more than 200 rubles per square meter.
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