GVL for the floor: pros and cons. DSP on the floor: laying on the logs, wooden gypsum fiber board and video, do-it-yourself dry screed, warm floor thickness For the GVL floor is it better or not

A flat floor in the house clearly illustrates the correct approach to choosing a leveling layer. As a rule, floor leveling was previously resorted to using chipboard or fiberboard. To date, such a material has appeared, which in operation and installation is much more efficient than the indicated ones - gypsum fiber sheet.

GVL is used for decoration and is produced by pressing using gypsum powder and cellulose. Distinctive feature of this finishing material is that it does not contain a cardboard sheet coating and is homogeneous in structure. Installation of GVL on a wooden floor can be done on your own. Due to the reinforcing properties of fluff pulp, the density of gypsum fiber board is much higher than that of gypsum board, which improves its performance and quality of finishing work.

Main properties of GVL: advantages and disadvantages

Gypsum fiber boards are a material obtained by pressing. The reinforcing function in its structure is played by fluffed waste paper - it is this that gives the GVL composition special strength.

Laying GVL boards

This combination of materials is superior in its characteristics to both gypsum board and fiberboard. By the way, this also applies to the resistance of such formations to a humid environment.

In addition, there is a separate category of moisture-resistant GVL (GVLV), which are recommended for use in rooms with a high level of moisture. One of the characteristic features of this type is the ability to regulate and maintain the level of humidity in rooms, which is facilitated by its composition. With an increased level of moisture, it absorbs it into itself, and if it is insufficient, it gives it away.

The viscous composition allows the material to be plastic without crumbling. In addition, gypsum fiber has high heat and sound insulation, and is also not subject to combustion. This material is distinguished by its ease of installation and sealing of joints. By the way, high viscosity and strength values ​​allow you to hammer in a nail and screw a screw into it without using a dowel. Such material is easy to process with the same tool as wood.

We list the most important properties of gypsum fiber:

Gypsum fiber sheet.

• Low level of heat conduction, which makes it pleasant to touch - it is always warm;
• Good soundproofing properties of the material, which depend on how thick it is;
• Resistant to fire. Such plates are excellent for protecting wood structures from fire;
• Ease of processing. For such sheets special tools processing is not needed, besides, there is always very little waste from GVL;
• Good flexibility allows this type to be used in the construction of arched structures and various elements interior decoration;
• Cold resistance allows the sheets not to crack or deform during defrosting and freezing;
• High levels of hygroscopicity allow you to regulate the level of humidity in rooms;
• The ability to hide under sheets engineering Communication allows, for example, to successfully use the sheets together with the underfloor heating system.

The disadvantages include a relatively large weight, as well as a much higher cost than, for example, a sheet of drywall.

High-quality gypsum fiber sheets are well sanded during the production process, as well as processed special composition so that the leaf cannot crumble. In the event that high strength and good resistance to stress are required from the finishing material, gypsum fiber sheet will be an excellent solution.

GVL on a wooden floor: application features

Many finishing floor coverings, as a rule, can only be laid on a very flat surface, and if we talk about wood, then it is not always possible to level it, for example, under ceramic tiles... In addition, not every finish finishing material possesses good performance soundproofing. In these cases, gypsum fiber boards can come to the rescue, which form a so-called dry screed on the surface.

GVL boards optimize the air humidity in the room: at high humidity they absorb, at low humidity they give up.

There are three main types flooring that can form gypsum fiber sheets:

• Prefabricated base, which is the base. It settles down on a cushion made of expanded clay. It is used if the wooden base is already insulated and relatively flat;
• Sub-floor, which is covered with a layer of polystyrene foam. One of the most suitable combinations to eliminate irregularities and create an additional insulation system;
• Prefabricated floor, which is arranged on polystyrene slabs, which are laid on an expanded clay layer. This system perfect for wooden bases that have fairly large vertical drops.

If we talk about a prefabricated dry screed, it usually consists of:

• Interlayers - waterproofing separating the layers. In the case of laying GKL sheets on a wood floor, glassine often plays this role;
• Compensating pad for sound insulation;
• The layer that aligns the previous ones;
• Gypsum fiber boards, which can be laid in one or two layers, which are pulled together with self-tapping screws.

Dry screed.

Before proceeding with the installation, you need to insulate the floor with a layer of expanded clay, which will give the coating evenness and allow you to keep the heat in the room longer.

Preparatory work

In order to mount gypsum fiber sheets on a base such as a wood floor, you should carefully approach the preparation of the base for further work in advance.

First of all, the condition of the existing floor should be assessed: the boards must be dismantled and all elements must be carefully considered. As a rule, often on individual elements structures, you can notice the defeat of rot or fungus. Such areas must be replaced, after which all wood elements are necessarily treated with an antiseptic.

Next, you should make sure that you do not need to additionally mount the joists for the final floor covering, after which the base is checked with a spirit level and, if necessary, leveled. By the way, using a lag fit to align the base is quite simple: the place where there is a surplus is corrected using a planer, and the lack of height is compensated for using bricks or special wedges.

The procedure for imparting wooden floor an even level begins with the deepening of the protruding caps of the self-tapping screws. After processing with a planer, all defects should be putty. If the depth of defects is more than two centimeters, they can be leveled with small-caliber expanded clay. After preparatory work completed, you can proceed to the main part - the laying of gypsum fiber boards.

The procedure for laying GVL on a wood floor

Laying GVL slabs is a painstaking process that requires diligence and precision.

In order to avoid various damages of the gypsum fiber, it should be given a horizontal position during the cutting work. For cutting, a saw is suitable - a hacksaw or a construction cutter. Placing the slabs can be divided into the following steps:

• Fixation of the edging tape. It is mounted around the perimeter of the room and is designed to absorb impact noise... In addition, this tape is a good compensator for deformation changes due to temperature differences;
• After the tape is fixed, a vapor barrier is installed on the ceiling. Be sure to overlap strips of insulating material so that there are no gaps;
• The surface of the vapor barrier is covered with an expanded clay layer;
• Guides are set according to the level of the embankment and the base is leveled using the rule;
• The expanded clay layer is tamped. During this action, it is worth paying increased attention to corner spaces and places near the walls;
• The first layer of gypsum fiber boards should be started from the corner of the opening. After mounting the initial layer, an adhesive composition is applied to it, on which the next layer is laid on top. This layer must be laid in the opposite direction to the first direction;
• According to the installation technology upper layer pulled together with fasteners and glued along the folds;
• The final layer is putty, since the surface needs priming. The primer must be compatible with the adhesive.

During the assembly of the final row, the slabs are adjusted to size. A hacksaw is usually used for trimming. If the leveling bed is more than ten centimeters thick, a subfloor must be installed three rows GVL, the last of which should be the same thickness as the first two.

If you plan to install a warm floor, then the installation of a dry screed must be started with laying layers of expanded polystyrene, but if it is planned to arrange a base floor, the insulating material is laid along the bedding.

Conclusion

Gypsum fiber sheet is of great interest for those who want to arrange a beautiful, even floor in their wooden dwelling. It has high performance characteristics, is strong and flexible, and is also able to protect the wood floor from fire. In addition, if properly installed, such a floor will serve for many years and help regulate the indoor climate due to its hygroscopic properties. This material is universal, and, most importantly, it is simple and easy to install, which will allow you to carry it out on your own.

Video: working with plates

GVL (gypsum fiber sheets) is a finishing material for leveling the floor, made of gypsum, reinforced with reinforcing additives and fluffed cellulose fibers.

It has gained particular popularity due to its excellent technical and operational characteristics.

Figure 1. GVL base device

Advantages of gypsum fiber sheets

Gypsum fiber sheets have many advantages, the main of which is environmental friendliness and Fire safety... The material is able to regulate the microclimate in the room, absorbing excess water at high humidity and giving it back when the air is dry.

Other benefits:

• high density and strength;
• ease of installation and speed of installation;
• light weight, does not require reinforcement of the base;
• good moisture resistance compared to fiberboard and gypsum board;
• installation excludes wet and dirty processes;
• easily cut with a hacksaw or electric jigsaw;
• does not bend under the influence of loads;
• increased sound insulation;
• frost resistance, allowing to withstand up to sixteen freeze and thaw cycles;
• low thermal conductivity;
• no waste and debris during installation.

GVL is perfect for installing a floor heating system.

Along with its advantages, GVL is sensitive to moisture, therefore Special attention should be given to waterproofing measures.

This is a rather fragile material that requires care during transportation and installation.

When buying drywall, choose material from only trusted manufacturers.

Professionals prefer Knauf products because of High Quality and affordable prices.

TOP 3 best products according to customers' opinion

Types of GVL

Gypsum-fiber sheets are produced as usual - GVL, and moisture-resistant - GVLV, impregnated with hydrophobic primers.

They can be distinguished by the markings on the sheets.

Marking example: GVLV-B-FK-1500 * 500 * 15 means:

1. GVLV - the "B" symbol indicates the moisture resistance of the sheet:
2. "B" - manufacturing accuracy. Marking "A" means high precision sheet. Symbol "B" indicates that the sheet is made with large deviations.
3. FC - seamed edge. PC stands for straight edge. Sheets with a straight edge are used for leveling the floor, with a folded edge used for walls.
4. 1500 * 500 * 15 - length, width and thickness of the sheet.

Conventional sheets are used in dry living areas where there is no risk of leakage. Moisture resistant sheets are used in damp and unheated rooms.

Standard dimensions of GVL for floor:

• length 1500 and 2500 mm;
• width 1200 and 1000 millimeters;
• thickness 10 and 12 millimeters.

Figure 2. Standard dimensions of GVL.

Prefabricated elements for the floor are produced in standard dimensions of 1500 * 500 millimeters. The thickness of the GVL for the floor of the prefabricated structure is 200 millimeters. The sheets have folds for fastening the elements together.

Figure 3. Prefabricated floor elements.

Manufacturers make other sizes of slabs, according to the order of consumers.

Distinctive features

By outward appearance and dimensions, GVL are similar to drywall. New in contrast to the latter, made in the form of a sandwich, when a layer of gypsum is sandwiched between two layers of cardboard, it has a homogeneous monolithic structure.

Sheets are sanded on one side and impregnated with a water-repellent primer.

Figure 4. GVL sheets.

The increased strength is due to the fluff pulp reinforcing additives evenly distributed in the gypsum layer.

Gypsum fiber sheets can be cut with any tool, screws can be screwed into them and nails can be driven in. They do not crumble during processing, unlike drywall. decorative elements interior.

When processing and cutting sheets, wet the jigsaw or hacksaw blade with water to prevent the formation of gypsum dust.

Depending on the properties, gypsum boards are painted in different colours... For example, moisture resistant have green color.

Moisture resistant GVL can only be distinguished by marking.

Gypsum fiber sheets are not flexible, unlike gypsum boards, therefore they are not used for the manufacture of curved structures.

They are heavier and more expensive than drywall.

Application area

Gypsum fiber sheets can not only replace drywall, but also significantly expand the scope of application.

They can be used for various purposes:

• leveling floors with expanded clay insulation and other bulk materials;
• laying on polystyrene foam plates and underfloor heating systems;
• mount on wooden logs and boards;
• installation of the base for finishing the floor on concrete or wooden floor;
• finishing of structures of unheated premises of basements, balconies, terraces, attics and attics.

Moisture-resistant gypsum fiber board for the floor is well suited for finishing unheated and damp rooms, as it does not lose its properties under conditions negative temperatures and high humidity.

Features of laying GVL

When stacking, the sheets should be positioned with an offset of 20 - 25 centimeters relative to each other, like brickwork, to obtain the most robust and durable design.

Figure 5. GVL layout diagram.

Important!

When laying gypsum fiber sheets on concrete base or a screed, wait until the concrete coating is completely dry.

For elements adjacent to the wall, it is necessary to remove the folds to prevent punching during operation.

Laying should start from a wall with a doorway, from right to left, with the cut side to the wall.

The seams between the sheets should be at least 1-2 millimeters.

When installing the floor on a layer of thermal insulation made of bulk mixtures with a thickness of more than ten centimeters, it is recommended to lay gypsum-fiber sheets in three layers. In this case, the lower layers should consist of more small parts, and the upper one can be laid from large sheets, more than two meters long.

Insulation under GVL

There are three main types of insulation for GVL:

1. Dry backfill made of expanded clay or crushed slag on a concrete or wooden base.
2. Thermal insulation layer from polystyrene or expanded polystyrene. It can be laid on a concrete base or as an additional layer on expanded clay.
3. Glass slabs or mineral wool laid on a wooden or concrete base between the joists.

Figure 6. Mineral wool for floor insulation in a wooden house.

GVL flooring technology for concrete

A high-quality and reliable base for any finishing coating can be obtained by strictly observing the technology and sequence of work:

1.Preparation of the base

Before starting work, we dismantle old floor coverings, thermal insulation layers and a destroyed screed to reinforced concrete slab overlap. We remove construction waste and dust.

2.Repair of floors

We close the seams between the slabs with mortar. We embroider the cracks in the concrete and seal them up with repair mortars. We treat the surface with special penetrating concrete primers.

3 markup

We mark the backfill level and top level screeds using a laser or water level.

To do this, draw a horizon line around the entire perimeter of the premises. It can be located at a height of 50-100 centimeters from the floor.

We make measurements from the horizon line, and determine the highest point of overlap.

From this point we mark the thickness of the backfill and transfer it to the walls around the perimeter of the room.

Similarly, we determine the marks of the height of the screed.

Backfill and screed height lines

Figure 7. Marking the screed level.

4. Waterproofing of bases.

Concrete slabs cover plastic wrap, with a density of 200 microns. We overlap the canvases, overlapping each other by 20 - 25 centimeters and fastening with tape. We put the film on the walls, 5-10 centimeters above the level of the screed and fix it with tape.

Along the perimeter of the premises, we attach a damping tape made of foamed polyethylene, above the height of the screed, to soften deformation shrinkage and sound insulation of the walls from the floor.

Figure 8. Waterproofing the floor with a damper tape device.

5. Laying of communications

For the device of communications under the coating of gypsum fiber board, we put wires and cables into a protective corrugated pipe. The thermal insulation layer above the corrugation must be at least 20 millimeters.

6.The device of beacons

To perform an even layer, we install guide beacons from wooden slats or metal profiles. We verify their horizontality strictly according to the marks. We fix to the base on cement or gypsum mortar.

7. Thermal insulation device

We fill the dry mixture of expanded clay of different fractions with an even layer, leveling and tamping between the lighthouses. Pay particular attention to wall abutments and doorways.

Figure 9. Laying expanded clay on beacons.

Wear a respirator to prevent expanded clay dust from entering the respiratory tract.

After completing the work, remove the guides and fill the resulting voids with expanded clay.

To insulate the floor above the unheated basement, you can additionally perform foam insulation, having previously laid it on expanded clay drywall sheets.

8.Covering device of gypsum fiber sheets

We start laying GVL from the corner farthest from the door.

We coat the folded edges with PVA glue and lay the sheets, securing them additionally with self-tapping screws, at least two centimeters long. We screw the self-tapping screws with a screwdriver around the perimeter of each sheet, in increments of 15 centimeters, sinking the caps into the surface of the material.

Figure 10. Fastening gypsum fiber sheets with glue and self-tapping screws.

We lay the second row of sheets on glue, with an offset of at least 20 centimeters, like brickwork. We fix the perimeter of each sheet with glue and self-tapping screws.

Self-tapping caps must be embedded in the slab to prevent damage to the finish.

After the completion of the laying of the gypsum fiber board, the seams between the sheets and the grooves from the self-tapping screws are sealed with putty.

Cut off the protruding damper tape and waterproofing along the perimeter of the wall.

Figure 11. Scheme of the device of floors with gypsum plasterboard on a concrete floor.

Works on finishing floors can be started the next day, after the glue and putty have dried.

The base of gypsum fiber sheets is suitable for any material of the final floor covering.

When laying parquet, laminate or linoleum, you can additionally install a special underlay.

Laying GVL on wooden logs

Rigid gypsum fiber sheets are ideal for leveling wood floors.

Before starting work, we check the condition of wooden structures.

If necessary, we replace the elements damaged by rot, add lags.

Checking the horizontality of the floors building level... We correct the deviation by placing wedges or removing irregularities with a plane.

Everything wooden structures we treat with antiseptic compounds.

We install a vapor barrier made of waxed paper or glassine.

To prevent deformations around the perimeter, we attach a damper tape.

We put the thermal insulation of mineral wool, laid tightly between the logs or fill in the dry mixture of expanded clay.

We lay the gypsum-fiber sheets on the logs.

Figure 12. Laying GVL on wooden joists.

We glue the sheets together along the folds and fix them with self-tapping screws.

It is better to lay the second layer of gypsum board perpendicular to the first one, on glue.

We glue the top layer along the folds and fasten it with self-tapping screws, embedding the caps in the sheets.

We seal the seams and caps of the screws with putty, getting a rigid monolithic coating, ready for finishing.

Installation errors

When installing floors from gypsum fiber board, it is necessary to strictly follow the sequence of work and installation rules in order to avoid possible defects:

• pushing through the floor if you did not cut the seam edge of the gypsum-fiber sheets against the walls;
• uneven subsidence of the floor from shrinkage of expanded clay, if the beacons were not removed;
• deformation of GVL, in the case of laying on wet expanded clay, not fulfilling technological gaps between the sheets and at the points of abutment to the walls.

Following our recommendations and observing the technology, you can independently carry out the installation of the base from the gypsum plasterboard or control the work of contractors. As a result, you get a durable, solid, perfectly flat base for any floor finish.

You need a strong and reliable material for finishing the floor? Then, without hesitation, buy gypsum fiber sheet (GVL), which has excellent technical characteristics and properties. After all, it is made from gypsum and reinforced with special additives and cellulose.

GVL sheets, in contrast to drywall, have a homogeneous structure without a cardboard sheath. It is a fairly strong and hard material, which also has fire-resistant qualities. There are two types of such material:

• ordinary gypsum fiber sheet, which is used for finishing residential and industrial premises with normal humidity;
• moisture resistant gypsum fiber board - used in buildings with high humidity levels.

Due to their versatility, gypsum fiber sheets are widely used in construction, including in the arrangement interior partitions, false ceilings and wall cladding.

GVL for the floor is especially popular - it is used for the device of a dry screed, assembly of the base, and also as facing material... Both wooden and reinforced concrete base can serve as the basis for laying.

Specifications

Gypsum fiber sheets are thoroughly checked during the production process, and their quality is confirmed by certificates of conformity that meet GOST. On one side, the gypsum fiber board is sanded, and its edges are rebated, which prevents the sheet from chalking.

For ease of use, this material is available in several sizes: small-sized (1500 * 1000 * 10) and standard sheets (2500 * 1200 * 10). The thickness of the slabs can be from 10 to 20 mm.

Note! Only small-sized sheets of gypsum fiber board are suitable for arranging the floor.

Advantages and disadvantages of GVL

One of the main advantages of GVL is ease of installation and a minimum of waste during installation. Sheets can be easily laid with your own hands, thereby significantly saving your budget on hiring professional builders.

Gypsum fiber can be used as a backing, insulation or subfloor. On top of gypsum fiber sheets, you can lay almost any topcoat as this material provides a secure and even base.

In addition, GVL boards have the following advantages:

• Density and flexibility.
• Resistant to moisture, especially moisture resistant gypsum fiber board.
• Provides excellent heat and sound insulation.
• Combustion resistance (confirmed by appropriate certificates).
• GVL sheets are not subject to deformation under the influence of temperature drops.
• The frost resistance of this material is 15 cycles, which makes it possible to equip the gypsum fiber floor even in rooms that are not heated.

The disadvantages of using GVL for the floor include:

• the tangible weight of a sheet of such material;
• with improper installation, GVL can break down;
• higher price when compared to drywall.

Advice! When buying this building material, choose products from well-known and trusted manufacturers. This will guarantee the strength, reliability and durability of GVL.

Also remember that for laying slabs in two layers, you need to buy material with an area of ​​\ u200b \ u200btwice the area of ​​\ u200b \ u200bthe room.

Gypsum fiber screed - advantages and features

GVL sheets and plates used for flooring have the following advantages:
Such a floor is versatile and allows you to immediately lay the finishing floor covering. Also, during its installation, you can immediately mount the "warm floor" system.

The absence of wet processes allows for repair and construction work at any time of the year.
The finished coating is capable of withstanding significant loads and is highly durable - GVL does not creak, bend or knock.

Therefore, dry floor screed with the help of gypsum fiber board is increasingly used in construction and enjoys well-deserved popularity. It allows you to equip:

• base base using expanded clay bedding (thickness 2-3 cm);
• subfloor in which insulation is used;
• prefabricated screed, in which, in addition to expanded clay, additionally expanded polystyrene plates are used.

A dry screed with gypsum plasterboard allows you to immediately lay the main floor, while there is no need to wait for 2-3 weeks, as in the case of using a sand-cement screed.

Preparation of the base

Before starting work, the concrete base must be cleaned of debris and the old wooden floors must be reinforced so that the movable floorboards do not creak. If you will not level and insulate the floor, but plan to lay the gypsum fiber board on the old coating, then the base must be treated with a primer.
Warming, leveling and additional sound insulation floor under a dry screed provides for the following processes:
Foundation before laying GVL sheets must be vaporized with polyethylene film.

Note! The film should cover all joints and go out onto the walls, the excess polyethylene can be cut off.

Fasten the beacons (aluminum guides or wooden logs), allowing the expanded clay to be evenly distributed and then fasten the gypsum fiber sheets.

Make expanded clay backfill (2-3 cm), which will prevent heat leakage and provide excellent sound insulation.

Important! For better base strength, use expanded clay different sizes starting from the smallest fraction.

Then, resting on the beacons, level the backfill using a rule or a water level. To facilitate this time-consuming process, you need to evenly scatter expanded clay from the very beginning. Then carefully tamp the resulting base, paying special attention to the floor near corners, walls and doorways.

We lay gypsum fiber sheets correctly

Installation of GVL sheets does not require special skills - the main thing is to follow a specific procedure so that the finished floor has the necessary performance characteristics.

First of all, lay a special mounting tape made of basalt wool or foam around the perimeter of the walls, which will compensate for the expansion of the gypsum fiber board under the influence of temperature or moisture.

Then you can go directly to the laying of gypsum fiber sheets in compliance with the offset. To do this, you can cut one or more sheets of material.

Note! Installation of GVL must be carried out very carefully so as not to displace expanded clay. Otherwise, the base will need to be re-aligned.

Begin laying the first sheet from the corner near the door. To fix the edges well, use a special professional glue. Be sure to remove any excess glue that may come out at the seams.
And then the GVL is fixed with self-tapping screws, which must be screwed in with a maximum step of 30–40 cm “flush”. For sheets with a thickness of 1 cm and more, take screws of 2 cm, and to fix the plates of 1.2 cm, screws with a length of 2.3 cm are needed. Trimming with a jigsaw or a hacksaw is done at the end of each row.

If you decide to use carpet or laminate as a finishing floor covering, then all joints and fasteners should be putty. And the mounting tape protruding above the level of the sheet is cut off with a knife.

How many layers of gypsum fiber board should be laid?

Usually one layer of gypsum fiber boards is sufficient. But if you want to lay two layers, then remember that they must be laid perpendicular to the elements of the previous layer. If a layer of expanded clay reaches a thickness of 10 centimeters or more, then GVL is laid in three layers. In this case, a foam layer can additionally be applied.
At the same time, do not forget to shift the joints of adjacent rows, which are also fixed with screws and glue.

You can also buy double thickness sheets that are already glued. They are laid according to the same principle as for small-sized GVL boards. And the presence of special folds with an adhesive allows you to quickly lay a new coating.

Note! If you are using gypsum fiber boards in rooms with high humidity, then in the area of ​​joints and walls it is necessary to make additional waterproofing.

Features of installing a warm floor on GVL

Heating systems can be laid on gypsum fiber boards, but it is necessary to have an idea of ​​some of the nuances of such work.
If one layer of gypsum fiber is used, then special grooves must be made on the surface of the plates for the underfloor heating cable. In this case, do not forget to be sure to prime the GVL sheets.

Important! You should not lay the underfloor heating cable under the GVL, since its plates have thermal insulation properties.

If you are laying two or three layers of gypsum fiber, then the top layer of the material must be assembled from strips, the width of which corresponds to the cable installation step. In this case, it is necessary to provide for a gap for laying the cable, then the grooves should be covered with tile glue.

Not everyone can install the underfloor heating system on their own home master, therefore, it is advisable in this case to invite professionals for installation.

After completing all the work on laying gypsum fiber boards, and after waiting a day, you can proceed to the finishing of the floor. Do not forget that you can lay any kind of floor covering on GVL, depending on your preferences. And the dry method of laying allows you to significantly save time for repairs, as well as money, because high-quality cement-sand screed it's expensive.
Thus, gypsum fiber sheets are a convenient, economical and quick way of arranging a floor, which has excellent performance characteristics.

Laying gypsum fiber board (gypsum fiber) video

Gender is one of the tricky building structures... GVL floors consist of several elements. Each performs its own function. The result is a durable, perfectly flat surface. To make it like this, they use different methods and materials.

Recently, wet leveling methods have been supplanted by dry methods. These include the technology of coating with gypsum fiber sheets. They are laid on different bases. GVL on a wooden floor is one of best materials for .

Gypsum fiber sheets – modern material designed for smoothing curved surfaces, wall, ceiling and floor decoration. They are created from reinforced gypsum and cellulose. It is specially disassembled into fibers in order to increase the strength of the final product. During the production process, the raw material acquires a homogeneous structure and high density. When gypsum hardens, the material becomes dense and durable.

Gypsum fiber products are similar to gypsum board and fiberboard, but have a number of undeniable advantages in front of these materials.

1. They are highly environmentally friendly, as they are made from natural ingredients. In the production process, synthetic inclusions, artificial chemical additives are not used. Which are emitted and poison the air during the operation of the room.
2. Hot water sheets are fireproof. The material does not burn, but is charred. Does not emit toxic gas.
3. A dry gypsum fiber board floor is strong and durable, withstands serious mechanical stress. It doesn't flex or squeak over time. This characteristic they got it due to the high concentration of cellulose. She acts as a reliable connecting element.
4. Compared with gypsum plasterboard, GVL have the highest moisture resistance. Therefore, they are used to cover wooden floors in kitchens and bathrooms. It keeps well itself and protects the finish coat made on the basis of wood components from warping.
5. GV slabs are a universal leveling coating for any finishing material. It serves as a substrate for laminate, carpet, linoleum.
6. The material, made of plaster and cellulose, retains heat excellently and prevents noise propagation.
7. GVL are easy to install, easy to transport. Well cut and shaped. They have convenient dimensions. It is pleasant to lay them due to the absence of dust, dirt, contact with water.
8. They are suitable for covering a warm floor, they do a good job of masking communications.

Gypsum boards are ideal for leveling wood floors. They do not interfere, do not constrain the freedom of natural boards.

GVL parameters

Plaster and fiber boards are produced in two variations.

1. Simple products are intended for interior decoration with low to medium humidity levels. They are placed on the floor, the walls are leveled, partitions and original design elements are created.
2. Moisture resistant - play the role of a hydrophobic layer on the wooden floors of kitchens, bathrooms, bathrooms.

In terms of dimensions, GVL slabs are standard - 1200x1500 mm and small-format - 1500x500 mm or 1200x600 mm. GVL of small sizes is 2 sheets, in which the central axes intersect, displaced in vector directions. This is how a seam lock system is obtained.

Attention! Weight of one small formatleaf- up to 18 kg. Width - no more than 50 mm. Length -1.5 m. Thickness - up to 20 mm. Hardness - over 20 MPa. Thermal conductivity - no more than 0.36 W / m.

When buying GVl plates, the calculation is made on the condition that the products are placed in 2 layers. Therefore, the total floor area is multiplied by 2 and divided by the parameters of the GVL.

Installation of GVL on a wooden floor

In order for the installation of GVL to turn into an easy and pleasant work, 2 conditions must be accepted:

1. store the material before laying in a dry, well-ventilated area:
2. cutting should be carried out only in a horizontal position on a flat surface: put the gypsum board on a table or workbench so that it does not bend. Use a jigsaw, a hacksaw or a sharp carpenter's knife for this.

Laying of gypsum fiber sheets is carried out different ways... It depends on the quality of the base and the installation scheme.

Prefabricated GVL floor on a loose cushion

With a large difference in floor height, use Additional materials for alignment. On the rough boards or an old warped floor is stuffed with slats in the form of a lattice with cells. They are filled with medium-fraction expanded clay to a thickness of 2 cm. This layer will play the role of thermal and noise insulation.

Next, put the sheets of gypsum fiber in 2 layers. The first is attached to the slats using screw-in elements. The second is glued to the bottom. At the same time, they make sure that the joints of the slabs do not coincide and that the locks are aligned as tightly as possible.

Attention! Leveling gypsum-fiber products should not fit snugly against walls. A distance of 1-1.5 cm will create conditions for additional ventilation and will serve to better preserve the entire floor structure made of natural parts.

Multilayer prefabricated "dry" screedunder GVL

First stage

Before installing the GVL, research and repair of the rough base is carried out.

1. Check the status wooden logs and horizontal parts of the general structure, their horizontality and possible depressions and protrusions. If serious defects are found, the damaged elements are repaired or replaced with new ones. Rotten boards and beams are removed, and well-processed, reliable parts of the same format as the old ones are put in their place.
2. All structural elements are processed protective compound: special impregnation for wood. It will protect boards and other components of the multi-layer device from mold, mildew, and insects. Compositions with fire-prevention inclusions will save the material from fire.
3. When there are differences in the heights of individual boards of the rough base, grinding and cutting off the protruding parts are carried out. The cavities are filled with hermetic means, wood putty. Sometimes masters use a simple solution: small sawdust mixed with PVA glue. When solidified, the composition acquires special strength and reliably protects the material from any subsequent damage.
4. Particular attention should be paid to protruding nails, screws, which fasten the boards to the timber, lags. They need to be sunk into the tree as deep as possible. The dent is sealed with a composition of sawdust and PVA or any sealant.

Second phase

When the base is prepared, proceed to the installation of a heat-insulating layer under the GVL on a wooden floor.

1. The rough plank base is covered with a vapor barrier cloth: glassine, corrugated or waxed paper.
2. Along the perimeter of the room, an edge tape is mounted to the walls. It can be a narrow strip of basalt wool, foam, isolon: thickness - 1 cm, width - 0.1 m. It is screwed on with self-tapping screws or put on glue. Attention! Insulation tape will protect GVL from cracking and bending.
3. Next, the main leveling material is cut. When measuring, take into account the size of the gaps and the geometric features of the room. The cuts are carried out with an electric jigsaw strictly along the outlined lines. The edges are lightly cleaned from the protruding board components.
4. For prepared wooden planks poured a 20 mm layer of fine-grained expanded clay or fine river sand... The insulation is leveled with the right silt and checked by level.
5. Fiberglass or polystyrene mats are placed on the bulk material, which are cut into squares (rectangles).
6. Top on created from different materials Layer cake is the first layer of gypsum boards. For this, moisture resistant sheets are used. The gap between them should be no more than 1 m.
   

   Attention! Installation of GVL should start from the doors. So the insulating layer will maintain its integrity and remain flat. If you need to lay on the opposite side, you should create "islands" from the sheets and move along them.

7. The first layer of dry screed made of gypsum-fiber parts is covered with an adhesive mass. To do this, use PVA dispersion or special mastic. The composition is applied in an even thin layer. If it has a liquid consistency, use a brush or roller. Thick product spread with a frequent notched trowel. The glue solution contains water, but the moisture-resistant characteristics of GVL will not allow the material to deform.
8. Work begins from the corner opposite to the doors. The boards are glued in stages, in rows. Leveling products of the second level are fixed perpendicular to the first. If at first the sheets were laid along, then last layer put across the base.
9. Small-sized leveling products are glued and fastened with self-tapping screws in increments of 20 cm. Large-sized ones are screwed at a distance of 30 cm from each other. Attention! For screwing GVL, special hardware with double thread is used.
10. Upon completion of the laying of the sheets, the joints and the locations of the caps of the self-tapping screws are sealed with a putty or sealant, the protruding edges of the edging tape are cut off with a sharp knife.

To put the gypsum fiber board on the wooden floor correctly, no special skills are required. The main thing is to learn the main technological points, heed the advice of the masters and follow the installation instructions.

Important nuances about GVL

Gypsum fiber leveling boards can be placed under laminate, linoleum, carpet directly on wooden base... But it must be in perfect condition.

The sheets are cut in the last row to achieve an optimal spacing of 25 cm.

In factories and construction plants, double small-format products are produced, ready for stacking. They are joined using folds, which are covered with glue at the production stage. If the lugs protrude onto the walls, they are cut off. Such plates are pulled together with fasteners (self-tapping screws).

Gypsum fiber material lends itself well to forming. In case of complex cutting, the diagram drawn on tracing paper with the geometric features of the room should be placed on a flat sheet of gypsum fiber and the necessary cuts should be made according to the markings. Round shapes outline first drilled holes and then cut with a jigsaw.

GVL is placed on a wooden floor when they want to make an absolutely flat surface with minimum costs... Boards made from inexpensive gypsum and cellulose are excellent alternatives to their more expensive counterparts.

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For most people, the floor is the surface with which their feet touch while walking, on which some kind of covering lies, there is furniture and equipment. In reality, the floor is a rather complex multicomponent structure, which, at least, includes a solid rough base, which creates the basis for laying the future coating, an equalizing layer and the selected topcoat.

Installation of a floor made of gypsum plasterboard does not take much time and labor, and also, one of the advantages of this material is the absence of dust and dirt during work.

The most time consuming task is to create a correct and high quality leveling layer. However, modern building materials and structures make it possible to cope with this problem in the shortest possible time. In this case, we mean the floor made of gypsum fiber board. The use of this material allows you to reduce the time and effort spent on arranging the leveling layer. With a strong desire, you can make a floor from gypsum fiber board yourself. However, before that, you need to familiarize yourself with the main features of such structures.

What you need to know about GVL floors?

GVL, aka gypsum fiber sheet, is a modernized "descendant" of materials known collectively as "dry plaster". Moisture resistant sheets are made using cellulose fluff waste paper and gypsum fibers. Waste paper serves as a reinforcing component. In the process of semi-dry pressing from such a mixture, it is possible to obtain a material with excellent technical characteristics, including:

• fire resistance;
• high bearing capacity;
• minimum thermal conductivity;
• no bending deformations.

GVL floor has many advantages:

• quick and easy styling;
• waste-free installation, which will especially delight economical users;
• the possibility of laying the finishing floor covering without the need to wait for a long curing period, typical for the installation of floors with cement-sand and cement screeds.

The most important technological advantage of GVL is that this material allows you to equip the floor in the shortest possible time, and during the installation of the elements there is no dirt and dust.

Leveling gypsum fiber sheets can be used to equip the floor:

• over wooden and concrete floors;
• over a leveling structure created using a lag;
• over cement-sand and polymer screeds.

GVL floor has the highest insulating properties, which makes it possible to increase the insulating characteristics finished products... In addition, the material contributes to the creation of an optimal level of humidity in the room. The sheets absorb water vapor when there is an excess in the room air and release it back into the surrounding atmosphere when the humidity drops below normal.

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