The thickness of drywall for a wall: the main nuances. What thickness of drywall is best for walls? The lightest drywall

The market for renovation materials today is filled with all sorts of brands and types of drywall. Therefore, it is very problematic for an inexperienced person to understand all this diversity, especially since different options are preferable for each specific case. And making the right choice is very difficult. Our article can help in this matter. She will reveal to you all the nuances and tell you how to choose drywall for construction work.

What kind of material is this?

Drywall is currently the most popular material widely used for finishing interior spaces houses and apartments. The advent of plasterboard sheets (GKL) created a real sensation in the design of residential and non-residential premises, forever changing the old appearance of our houses. And all thanks to its features and structure.

This material consists of the following components:

gypsum core. It contains different components depending on the type of sheet (standard, moisture-resistant or fire-resistant);
two layers of special cardboard located on both sides of the sheet. They act as a frame and are an ideal basis for everyone finishing materials.

Sheet structure

The material is multi-layered in structure and consists of 93% gypsum. The remaining 6% belongs to cardboard, and only 1% is allocated to other additives that give gypsum board various specific properties.

The basic advantages of gypsum boards include:

environmental friendliness;
strength and light weight;
easy installation;
availability;
an excellent solution for finishing walls or ceilings, as well as constructing various structures;
drywall can “breathe,” which helps absorb excess moisture from the air. This allows you to use it for the kitchen. There he will be able to maintain the desired microclimate;
the sheets on top can be treated with a primer, ceramic tiles applied, painted or wallpapered;
excellent sound and heat insulation properties.

Most main feature This material is considered to have rigidity and ductility. Using just a few approaches, drywall can be given absolutely any shape.

Plasterboard finishing

Due to its structure and special properties, gypsum boards are now actively used for finishing ceilings, leveling walls, forming partitions, shelves, arches and niches. Drywall can be used for the kitchen, bathroom and toilet, as well as in any other room. But here you need to take into account the characteristics of each of the listed premises. The material does not have any harmful effects on human life and health. The only exception is cutting sheets. Here it is necessary to wear protective goggles over your eyes and a mask to prevent dust and small construction debris from getting into your mouth and eyes.

Note! By choosing the right material for finishing walls or ceilings according to its characteristics, you will ensure that the sheets will last a long time, maintaining all their excellent qualities.

However, despite such an impressive list of advantages, drywall as a finishing material has one minor drawback - less strength compared to other materials. But if handled correctly, this drawback can be almost completely eliminated.

Types of material

So, before deciding the question “how to choose drywall?”, You need to navigate its variations. The correct type of sheet is the key to successful and high-quality repairs.

There are three main types of sheets:

regular or standard (actually gypsum plasterboard). It is used everywhere for finishing walls and ceilings in rooms where there are no requirements for fire and moisture resistance. It is used in rooms with a normal climate in terms of humidity and temperature conditions;

Standard sheets

moisture resistant (GKLV). Moisture-resistant plasterboard is suitable for finishing walls or ceilings in the bathroom, as well as for the kitchen and toilet, or in any other room where there is a humid microclimate. The moisture-resistant type of sheet has additional treatment with hydrophobic and antifungal additives;

Note! Moisture resistant the sheet is attached to the frame with the front side facing the inside of the room. The front side of the sheet is the one that has been treated with a primer and an antiseptic solution.

Moisture resistant sheets

fireproof (GKLO). It has fire-resistant properties, which give the sheets special impurities and reinforcing components of the core. Prevents fire from spreading throughout the room. Suitable for finishing rooms with dry and humid microclimates: industrial workshops, attics, etc.;

Fireproof sheets

Note! Sheets can have two properties at once - to be both moisture-resistant and fire-resistant (GKLVO). They can be used for rooms with humid, normal and dry air.

Moisture-resistant sheets

Like the moisture-resistant type, moisture-resistant sheets must be protected by applying to the front side ceramic tiles, painting with special paints or primer treatment.

Knowing what types of plasterboard there are, you can easily make high-quality repairs to your home, as well as choose the right type of sheet for finishing the kitchen, its walls or ceiling, or for any other room.

Material parameters

In addition to the types of drywall described above, the material may vary in the following parameters:

thickness;
edge type;
color.

To understand how these parameters influence the final result of the repair, let’s consider them in more detail.

Thickness. It can vary in the range from 6 to 25 mm. The thinnest sheets are used to form arches and structures of a purely decorative nature. They are also used for mounting complex multi-level ceiling structures. In such a situation, you need to use a thickness of 8-10 mm. For walls, a thickness of 12-14 mm is suitable, and for decorative elements– 7 mm.

Arched sheets

But such plates are much more expensive than sheets of standard thickness.

The standard thickness is 12.5 mm. These are the sheets that are used most often.

The edge on the slab can be:

direct (PC). It is used for dry installation, since there is no need to lay joints. Suitable for finishing the ceiling as an inner layer;
round;
semicircular. Sealing of seams can be carried out both with and without reinforcing tape;
semicircular and refined (PLUK). They make it possible to perfectly align the sheets together;
rounded (ZK). Their use does not require the presence of reinforcing tape when puttying;
refined (UK). After installation, they require protection with reinforcing tape followed by putty. Used more often than others.

Edge Types

By color scheme sheets vary depending on their type:

grey colour. Characteristic of ordinary and standard sheets, which are used to sheathe any residential and non-residential premises with a normal microclimate;
green or blue. Moisture-resistant drywall has this color. They line kitchens, loggias, balconies and bathrooms;
red or pink. Color is used to indicate fireproof sheets. Much less often, such sheets are gray with red markings;
green with red markings. Thus, a hybrid type of material is marked, which has both moisture-resistant and fire-resistant properties.

Color range of sheets

Note! Of these parameters, the most important are the thickness of the material and its type.

Knowing all the parameters, you can easily and absolutely correctly determine for yourself the type of drywall that you will need for finishing work in each specific room.

Sheet sizes

An important factor when choosing plasterboard, especially for finishing walls or ceilings, is the size of the sheets. The width of one sheet is often 1.2 m. At the same time, the length of the sheets can be very varied: from 2.5 m to 4.8 m. Therefore, when choosing the size of drywall, you need to rely on the perimeter of the area being treated. Finishing walls or ceilings will be as fast as possible if you use solid sheets. The fewer seams there are, the less you will need to cover them and the smoother the formed surface will be.

Drywall has established itself as a durable and strong finishing material, used for covering surfaces, constructing arches, partitions, and various curved decorative fragments. When choosing suitable plasterboard panels, their product range and optimal standard size are taken into account. Proper calculation of the second indicator allows you to minimize the amount of waste, that is, save a lot of money. Next, we will talk about what type of drywall is best to select in a particular case, and what its ideal dimensions should be.

What is this article about?

General information about GC panels

When choosing gypsum slabs, it is assumed that the finishing work will be carried out using the “dry” method. And the basis of the structures will be taken exactly from silica material. Other materials can be used as auxiliary materials for connecting, installing and finishing the base ones. The GC sheet has two components - a gypsum flat core and its frame in the form of durable cardboard.

Despite its small thickness, plasterboard for walls, arches and ceilings has a sufficient margin of safety. Such a popular material as wall plasterboard is very tough, and its internal gypsum content can be supplemented with various components to achieve certain qualities.

Species diversity of drywall

To correctly calculate the amount of material, you need to know the dimensions of the wall plasterboard. Having information about the range of types of material will help a lot here, because each type has distinctive dimensions.

According to the properties, wall or ceiling plasterboard is divided into the following types:

ordinary (indicated by the abbreviation GKL) is distinguished by a light color (gray, beige);
moisture resistant (GKLv) - sheets with a greenish tint;
fire-resistant (GKLo) is identified by its pink color;
moisture-fire-resistant (or GKLvo) - the color can be green or pink.

GKL

This type of panels has a standard structure in the form of a gypsum layer and thick cardboard on it. It is meant to be installed in rooms with normal humidity conditions. Thanks to its light weight and flexibility for cutting, working with gypsum board is extremely convenient.

The production of ordinary sheets is carried out in accordance with GOST 6266-97 according to the German quality standard. A thin rounded edge (PLUK) is used at the joints. The cardboard and gypsum contents are glued together using a special adhesive composition. Cardboard takes on the functions of a reinforcing frame and serves as a universal surface for subsequent finishing - painting, decorative plastering, wallpapering or tiling.

The manufacturer puts special marks on each sheet indicating:

letter abbreviated name of the species;
abbreviated name for edge type;
leaf shape dimensions;
compliance with the standard.

For example, on a standard sheet it can be applied - GKL-A-PLUK-2700x1200x12.5 GOST 6266-97.

GKLO

Fire-resistant gypsum boards are ideal for finishing non-residential utility areas and for constructing partitions. Due to their ability to resist ignition, they are used to cover surfaces located near heating devices (fireplaces, stoves).

GKLV

A moisture-resistant variety of HA is created for improving rooms with high humidity conditions (kitchens, bathrooms, toilets). It contains additives that improve water repellency. Due to this, the material retains its shape and does not deform. This type of gypsum board has good resistance to the development of mold and fungi. For finishing country house This type of waterproofing system is preferable, since apartments in a private residential building always have higher moisture levels than rooms in a comfortable apartment.

GKLVO

This moisture-fire-resistant material combines two properties at once, which become clear from its name.

Sheets with specific application

The list does not end with these types of gypsum boards. There are also types of panels that differ in the specific purpose.

For example, gypsum fiber board or gypsum fiber sheets. The composition of such boards is a gypsum base with the addition of cellulose fibers. Gypsum fiber is stronger and more rigid compared to gypsum plasterboard. Such surfaces are not subject to the effects of fire; they are distinguished by a smooth surface.

Sheets based on gypsum fiber are used as a flooring base for tiles, for street finishing and construction work (they are used to assemble frame structures houses). Their installation is also permitted in rooms with a high degree of moisture formation. But for these purposes, special panels are chosen that are not susceptible to moisture - gvlv.

In addition to these types of drywall, manufacturers offer another type of material - sheets intended for repair. With their help, it is possible to correct individual small flaws in finished structures formed during their operation.

There are also sheets available for sale that:

differ in the ability to isolate from noise;
have protection from winds (required when facing facade surfaces);
have a thermal insulation function;
supplemented with layers - vapor barrier and polymer foam;
endowed with the ability to absorb electromagnetic waves;
are excellent conductors of heat (included in heated floors or ceilings with cooling).

There is another classification of gypsum sheets, which is based on their purpose and the corresponding standard size:

for walls (layer thickness - 12.5 mm);
for ceilings (9.5 mm thick);
arched gk (has a minimum thickness of 6 mm or 6.5).

The difference between arched panels is that they are easy to bend. And this good property, which helps in creating arched and curved openings. Ceiling slabs are used to seal the ceiling part of rooms, giving them multi-tiered shapes. And wall plasterboard is used for the construction of partitions and wall coverings.

Typical sizes of gypsum sheets

Standard sheet length

The standard length for drywall is considered to be 2, 2, 5 or 3 meters. However, some manufacturers are not limited to these limits and produce panels with a length of 1.5, 2, 7 or 3.6 meters. If necessary, some manufacturers, at the request of consumers, agree to immediately give the sheets typical sizes, for which the material is trimmed directly in the factory.

To cover the entire wall plane (under the ceiling), it is advisable to purchase sheets with a maximum length corresponding to the height of the walls. This creates fewer seams that will have to be sealed later. However, with a ceiling height of 2.7 meters, the use of three-meter panels is very inconvenient. Here difficulties arise with transporting the material and delivering it to the apartment. Because sometimes it's easier to choose Alternative option- several panels are not the same length.

Standard width of GC sheets

The optimal width of the sheets is 1.2 meters. For what frame racks mounted in increments of 0.4, 0.6 meters. Sheets of smaller format can also be found on sale today. Their width is only 0.6 meters, and their length is 2 (or 1.5) meters. Small-sized sheets are easier to transport by passenger transport. And their installation is also possible alone. However, it is recommended to limit their use to small surfaces. Otherwise, many seams will form. Flexible gypsum board can also have a narrow width (for example, a type of gypsum board called GKLD has a width of 1.2 m).

Thickness standard for gypsum sheets

The standard thickness of drywall may vary. These are 6 (6.5), 9 (9.5) or 12.5 mm. Plates with improved characteristics in terms of strength and fire resistance can have a thickness of 15, 18 and even 25 mm.

To decorate the walls, plasterboard with a layer thickness of 12.5 mm is purchased. The use of “dry” repair technology became possible largely thanks to this type building material.

For the construction of floating ceiling structures, choose ceiling tiles with a thickness of 9.5 mm. For suspended ceilings, it is also possible to use wall slabs, however, the higher price of the latter and the heaviness of the created structure are not in favor of covering the ceiling with wall slabs.

Drywall with a minimum thickness (6 mm) is called arched. And for a reason. It lends itself well to rounding, which makes it possible to create semicircular and shaped elements from it.

The selection of the sizes of GC sheets proceeds after clarifying the required area of the room. With a wall height of 2.7 m, doubt often arises as to which length of sheets would be more appropriate - three meters with subsequent cutting on site or 2.5 meters with the addition of a piece of drywall of the missing length. In such a case, today it is possible to place an order with the manufacturer, immediately indicating right size sheets.

If this is not possible for any reason, then it is best to adhere to the principle of installing HA sheets, which provides for minimal formation of seams when joining panels. Beginners should take this into account when choosing the appropriate size of wall cladding.

General information about GC panels

Species diversity of drywall

According to the properties, wall or ceiling plasterboard is divided into the following types:

ordinary (indicated by the abbreviation GKL) is distinguished by a light color (gray, beige);
moisture resistant (GKLv) - sheets with a greenish tint;
fire-resistant (GKLo) is identified by its pink color;
moisture-fire-resistant (or GKLvo) - the color can be green or pink.

GKL

The manufacturer puts special marks on each sheet indicating:

letter abbreviated name of the species;
abbreviated name for edge type;
leaf shape dimensions;
compliance with the standard.

For example, on a standard sheet it can be applied - GKL-A-PLUK-2700x1200x12.5 GOST 6266-97.

GKLO

GKLV

A moisture-resistant variety of HA is created for improving rooms with high humidity conditions (kitchens, bathrooms, toilets). It contains additives that improve water repellency. Due to this, the material retains its shape and does not deform. This type of gypsum board has good resistance to the development of mold and fungi. For finishing a country house, this particular type of HA is preferable, since apartments in a private residential building always have higher moisture levels than rooms in a comfortable apartment.

GKLVO

This moisture-fire-resistant material combines two properties at once, which become clear from its name.

Sheets with specific application

The list does not end with these types of gypsum boards. There are also types of panels that differ in the specific purpose.

Sheets based on gypsum fiber are used as a floor base for tiles, for street finishing and construction work (frame structures of houses are assembled from them). Their installation is also permitted in rooms with a high degree of moisture formation. But for these purposes, special panels are chosen that are not susceptible to moisture - gvlv.

There are also sheets available for sale that:

differ in the ability to isolate from noise;
have protection from winds (required when facing façade surfaces);
have a thermal insulation function;
supplemented with layers - vapor barrier and polymer foam;
endowed with the ability to absorb electromagnetic waves;
are excellent conductors of heat (included in heated floors or ceilings with cooling).

There is another classification of gypsum sheets, which is based on their purpose and the corresponding standard size:

for walls (layer thickness - 12.5 mm);
for ceilings (9.5 mm thick);
arched gk (has a minimum thickness of 6 mm or 6.5).

The difference between arched panels is that they are easy to bend. And this is a good property that helps when creating arched and curved openings. Ceiling slabs are used to seal the ceiling part of rooms, giving them multi-tiered shapes. And wall plasterboard is used for the construction of partitions and wall coverings.

Typical sizes of gypsum sheets

Standard sheet length

The standard length for drywall is considered to be 2, 2, 5 or 3 meters. However, some manufacturers are not limited to these limits and produce panels with a length of 1.5, 2, 7 or 3.6 meters. If necessary, some manufacturers, at the request of consumers, agree to immediately give the sheets non-typical sizes, for which they cut the material directly in the factory.

To cover the entire wall plane (under the ceiling), it is advisable to purchase sheets with a maximum length corresponding to the height of the walls. This creates fewer seams that will have to be sealed later. However, with a ceiling height of 2.7 meters, the use of three-meter panels is very inconvenient. Here difficulties arise with transporting the material and delivering it to the apartment. Therefore, sometimes it is easier to choose an alternative option - several panels of unequal length.

Standard width of GC sheets

The optimal width of the sheets is 1.2 meters. Why are frame racks mounted in increments of 0.4, 0.6 meters? Sheets of smaller format can also be found on sale today. Their width is only 0.6 meters, and their length is 2 (or 1.5) meters. Small-sized sheets are easier to transport by passenger transport. And their installation is also possible alone. However, it is recommended to limit their use to small surfaces. Otherwise, many seams will form. Flexible gypsum board can also have a narrow width (for example, a type of gypsum board called GKLD has a width of 1.2 m).

Thickness standard for gypsum sheets

To decorate the walls, plasterboard with a layer thickness of 12.5 mm is purchased. The use of “dry” repair technology became possible largely thanks to this type of building material.

For the construction of floating ceiling structures, choose ceiling slabs with a thickness of 9.5 mm. For suspended ceilings, it is also possible to use wall slabs, however, the higher price of the latter and the heaviness of the created structure are not in favor of covering the ceiling with wall slabs.

Drywall with a minimum thickness (6 mm) is called arched. And for a reason. It lends itself well to rounding, which makes it possible to create semicircular and shaped elements from it.

The selection of the sizes of GC sheets proceeds after clarifying the required area of the room. With a wall height of 2.7 m, doubt often arises as to which length of sheets would be more appropriate - three meters with subsequent cutting on site or 2.5 meters with the addition of a piece of drywall of the missing length. In such a case, today it is possible to place an order to the manufacturer, immediately indicating the required sheet size.

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Determining what thickness of drywall is best for walls

If you don’t know the intricacies of construction skills, it’s difficult to figure out what thickness of plasterboard is best to choose for walls. The fact is that the dimensions of the slab, the thickness of the gypsum board sheet and the purpose of different types finishing materials are different. And it is important not to make the mistake of not using wall plasterboard for the ceiling or vice versa.

Drywall on the wall

Which type is better to choose for walls?

The use of gypsum plasterboard, like gypsum fiber board, for leveling wall surfaces has gained wide popularity, and for good reason.

After all, these materials have many advantages:

easy to cut and quickly assembled;
work is performed with dry material;
it is possible to choose between budget plasterboard and more expensive gypsum board.

When choosing a material for leveling surfaces, it’s easy to get confused, because plasterboard is produced not only for finishing walls. And depending on the surface for which the gypsum plaster boards are intended, the dimensions and thickness of the sheet will also differ.

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Thickness of gypsum plasterboard (plasterboard) for walls

The thickness of the plasterboard for wall partitions determines the strength of the future structure. At the same time, taking into account that walls made of plasterboard sheets (GKL) are made both with laying slabs in one layer and in two layers, the optimal thickness of the material will vary depending on the type of structure chosen.

What will determine the thickness of the sheet?

First and the most important parameter, which will be further influenced by the choice of gypsum board of one thickness or another - this, of course, is the strength of the partition. Therefore, when deciding to purchase a certain type of sheet, always analyze what loads the future wall will have to be designed for. If it is a partition somewhere in an area of active regular movement, for example in a corridor or in an area doorway, then you should choose a more durable design.

Be sure to consider what type of partition will be organized. Among the standard plasterboard structures there are single-layer and double-layer partitions or cladding systems, as well as cladding with direct attachment to the base wall (see diagram No. 1).

Obviously, a gypsum board sheet that fits tightly to the wall, even if it is a little thinner, will be a fairly strong base. If we're talking about about a single-layer partition or cladding system, then you should think twice before choosing a plasterboard board with a thinner material thickness.

Another important factor, which determines what thickness of drywall to choose, is in the sphere of professional experience of the craftsmen performing installation work for installing partitions or cladding. The fact is that for sheets with a standard thickness, standards are provided for the distance between the placement points of the metal frame profiles on which the plasterboard sheets are supported.

If these standards are not observed, the quality of the material of the racks and frame guides is poor, as well as deviations from the optimal installation technology, thinner gypsum board sheets will not be the best choice for installation in an already unreliable structure.

As can be seen in the diagrams, the profile installation pitch is 600 mm or 60 cm. Here the most upper layer- this is the wall material, just below a layer of dry plaster, then empty place and wavy lines indicate the space for laying communications. The last bottom layer is gypsum board slabs of standard thickness. If preference is given to slightly thinner gypsum boards, then this step will need to be reduced to 30-40 cm.

Standard sheet thickness for walls

As mentioned earlier, all standards for calculating plasterboard partitions refer to the generally accepted recommended sheet thickness. So, standard thickness plasterboard for walls is 12.5 mm. Alternatively, slightly thinner slabs are also used - 9.5 mm. Discussing various options in the matter of choosing the thickness of plasterboard walls or cladding, it is appropriate to talk only about these two numbers - 12.5 mm and 9.5 mm.

Plasterboard-based slabs are also manufactured with several other thicknesses, but absolute majority the material used to finish the ceiling and walls has one of two specified thicknesses. In the table below you can see the dependence of the weight of the plasterboard sheet on its thickness and other dimensional indicators. In general, the mass parameter is calculated based on the area of the slab, since they come in different sizes.

Based on the data indicated in the table, you can calculate the weight of the slab based on known dimensions, as well as find out the total weight of the gypsum plasterboard material required to finish a surface of a certain area.

Which thickness should I choose: 12.5 mm or 9.5 mm?

It was mentioned earlier that professionals recommend using 12.5 mm sheets for wall decoration. However, if you are planning a more reinforced structure, you can make a two-layer partition or cladding using an interlayer of two 9.5 mm slabs.

Also, for a 9.5 mm thick plasterboard wall there is an important limitation - lamps, air conditioners, heaters or furniture weighing more than 2.5 kg cannot be hung on it without special preparation of the frame for these devices.

12.5 mm gypsum boards require a standard spacing of frame profiles - 60 cm, a thinner 9.5 mm analogue requires the installation of metal racks at a distance of every 30-40 cm. Also Special attention pay attention to the quality of the metal from which the metal profile is made, as it should have increased strength when using thinner plates.

When arranging the walls in the bathroom, only moisture-resistant gypsum boards with a thickness of 12.5 mm are suitable, followed by finishing them with tiles or painting them with protective paints and varnishes.

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Why drywall is not the best choice for walls: comparing alternatives

It’s rare that a redevelopment can be done without erecting new partitions, unless you decide to make a studio and are just tearing down the old walls. New walls can be built from piece materials, such as bricks, slabs and blocks of various compositions - we have already talked about them in the article “From brick to glass blocks: what to build from interior partitions" Or use sheet materials. There are three most popular today, and we are ready to tell you about all their pros, cons and features so that you can choose the best one.

1. Plasterboard sheet (GKL)

A plasterboard sheet is a layer of gypsum wrapped in thick paper, measuring 1200x2500x12.5 mm and weighing 29 kg. It can also be thinner - 9 mm wide, but this option is very fragile. It is mounted like this: first, a frame is formed from metal profile, then plasterboard sheets are sewn onto the frame in two layers, overlapping on all sides. The final wall thickness will depend on the width of the metal profile used 50/65/75/100 and will be 100/115/125/150 mm, respectively. GCR is sheathed not only on walls, but also on ceilings.

Waterproof plasterboard sheets (GKLV) of green color are also sold, but they are conditionally waterproof: with constant exposure to water, such sheets will swell, even if they are covered with tiles on top. It is better not to use it in “wet” rooms at all.

GCR cost: 250-350 rubles/piece. GKLV will be more expensive.

It is convenient to lay communications inside the frame, which is sheathed with gypsum board.
Easy installation.
If you mount the frame on top of the floor screed, the plasterboard wall can be dismantled and rebuilt as needed.
Very light material, gives very little load on the floors.

1 m² of plasterboard wall can withstand no more than 20 kg facing material. That is, the tile will withstand normally, but porcelain stoneware is no longer a fact. If overloaded, the finish will soon fall off along with a layer of cardboard, exposing the plaster.
On one butterfly dowel (the tip of which opens after screwing) in plasterboard wall an object weighing no more than 10 kg will be held, and on the ceiling - no more than 4 (you will have to make a cutout under the curtain rod or lay a beam on the ceiling). If you want to hang something heavier, you need to know in advance where exactly and lay a beam or profile there.
Very poor sound insulation.
Low strength - dents remain from impacts.
Use with great care in damp areas.

2. Gypsum fiber sheet (GVL)

GVL also consists mainly of gypsum, but is reinforced with various environmental additives. The assortment includes PC sheets - with a straight edge, they are intended for walls, and FC - an edge with a recess (for the floor). There is also a GVLV (waterproof gypsum fiber sheet) in stock: it does not differ in color in any way, it only has a seal indicating moisture resistance.

Dimensions of the gypsum fiber sheet are 2500 x 1200 x 10/12.5 mm, weight 36/42 kg. More often, a thickness of 10 mm is used for interior partitions. The metal frame is sheathed with GVL sheets in one layer, unlike gypsum plasterboard. To improve sound insulation, you can make two layers, but then it is better to combine: one layer of gypsum fiber board, the other of gypsum plasterboard.

Thickness of the final single-layer gypsum fiber board partition 10 mm: 70/85/95/120 mm depending on the width of the selected profile.

Cost: 450-500 rub./piece. The final wall is approximately the same in cost for gypsum plasterboard and gypsum board, since gypsum plasterboard is mounted in two layers, and gypsum board in one.

The butterfly dowel can already withstand up to 20 kg on the wall and up to 8 kg on the ceiling, which is two times higher than that of gypsum plasterboard.
Non-flammable material, can be used in saunas.
Good water resistance, can be used in the bathroom; Even a frame for a bathtub or sink can be made from GVLV.
Well processed to create complex shapes: arches, convexities, concavities.
It is convenient to lay communications inside the frame, which is sheathed with GVL.
Easy installation.
The wall turns out smooth and does not require additional leveling.
If you install the frame on top of the floor screed, the gypsum fiber wall can be dismantled and rebuilt as needed.

Depending on the additives contained in the core, there are four types of drywall. How to choose the right material for various works Today we’ll talk to experts about when you can save and when you can’t.

Drywall: types, technical characteristics and prices

Drywall is a three-layer sheet material consisting of two cardboard facing layers that reinforce a core of compressed gypsum.

GCR in the interior can be used both for technical purposes (leveling the curvature of walls, erecting false walls, partitions, flooring) and for decorative purposes (organizing suspended ceiling systems, multi-level wall structures, decorative volumetric elements).

Photo 1 - Volma moisture-resistant plasterboard sheet 1200x3000x12.5mm

GKL itself is a non-flammable material. The only element exposed to flame is the cardboard lining of the sheet. Due to the fact that the flammable cardboard and the heat-resistant core are connected end-to-end, i.e. there is no between them air cushion, cardboard will not burn either - only charring of this layer of material is possible.

IMPORTANT! Any type of gypsum board is not flammable, but do not confuse ordinary heat-resistant gypsum board and fire-resistant gypsum board - a material reinforced with special additives. An ordinary sheet of drywall will begin to deteriorate from prolonged exposure to high temperatures as soon as the water contained in the gypsum (about 17%) finally evaporates.

Photo 2 - GKL plasterboard 12.5*1200*2500 Belgips

How to choose drywall?

The choice of gypsum board should be based on its intended use: any type of work in the room will correspond to a certain type.

Selecting the brand and sheet size are secondary tasks.

Photo 3 - GKL KNAUF (KNAUF) 12.5 mm (1.2x2.5m)

Criterias of choice:

type of work;
sheet thickness and length;
sheet weight;
sheet edge type;
brand/manufacturer;
material price.

Photo 4 - KNAUF moisture resistant 9.5 mm

Types of drywall according to GOST 6266-97

IMPORTANT! Each type of gypsum board has its own color according to the standard.

Standard gypsum board

Does not contain additives, intended for work in rooms where the humidity level does not exceed 70%: used for work on interior partitions, decorative and sound-absorbing structures, suspended ceilings(ceiling is highlighted). The color of the material is gray (less often blue).

You can hide any type of communications behind the ceiling frame for hanging gypsum boards. From the wall you can make a false wall or partition of any type up to 10 m high.

Photo 5 - GKL Knauf 2500*1200*12.5mm

Marking: GKL

Moisture-resistant plasterboard containing hydrophobic and fungicidal additives is suitable for work in wet areas. Waterproof can be used for cladding walls, ceilings in kitchens, bathrooms, toilets, used as a base for floors (a special type - floor) and for cladding window slopes. The color of the material is green.

IMPORTANT! The water-repellent properties of this type are enhanced by special impregnated cardboard; gypsum boards must be isolated from moisture in one way or another: painted or tiled gypsum boards in damp room you will feel much better.

Photo 6 - Magma regular GKL-A-UK

Marking: GKLV

IMPORTANT! GCR for floors is more often used in the “dry floor” technology: the floor is laid on a prepared base - a frame with filler, then it is secured with self-tapping screws. Quality products can be found at KNAUF. An example of a branded floor gypsum board is heavy-duty Knauf Bodenplatte boards.

Fire-resistant contains a special reinforcing additive - glass fiber, which increases the resistance of gypsum plasterboard to fire and prevents the possibility of fire and destruction of the material under the influence of high temperatures, therefore the heat-resistant type can be used as passive protection against fires.

Fireproof gypsum plasterboard is used in facilities with strict requirements fire safety, as well as in crowded places (stadiums, shopping and entertainment centers, train stations). Color: red.

Photo 7 - GKLV Danogips 2500x1200x12.5mm Moisture resistant

Marking: GKLO

Moisture-resistant type with increased resistance to open flame. Produced by KNAUF.

Photo 8 - Fire-resistant gypsum board (GKLO)

Marking: GKLVO

In addition to the main types, there are several more varieties:

restoration - thinner plasterboard for cladding old structures and wood, it bends easily, due to which it can be used when making shaped elements;
laminated (vinyl) - a regular sheet of plasterboard of any type, industrially coated with PVC film, due to which the sheets are ready for installation immediately finishing works(this coating does not breathe well due to the film coating);

Photo 9 - Laminated Laspan

reinforced - plasterboard with fiberglass additives;
acoustic perforated - special soundproofing material for finishing lecture halls, cinema halls, recording studios and other similar premises that require additional sound insulation;

Photo 10 - GYPROC GKLA acoustic

arched - a thin-layer gypsum sheet, often no more than 6.5 mm in thickness, due to this the material is quite flexible, it is easy to make curved elements from it such as the circumference of an arch, the lining of figured ceiling elements;

IMPORTANT! Drywall, perforated on one side with a special needle roller, also bends well.

gypsum fiber or GVL - the same gypsum board, but without cardboard lining, gypsum is reinforced through the use of fluffed cellulose waste paper and technological additives what makes GVL a more durable material than gypsum board (instead of plasterboard, prefabricated floor bases and partitions are better made from this material);
tongue-and-groove slabs - gypsum is additionally fired, which gives the material additional strength (from these slabs you can build interior partitions and begin finishing without preparation).

Photo 11 - Tongue-and-groove slabs (GGP) Volma (hollow)

Drywall sheet size

The standard sheet should be rectangular:

length - from 2,000 to 4,000 mm;
width - from 600 to 1,200 mm;
thickness - from 6.0 to 12.5 mm.

Each application area has its own sheet standards: thin arched gypsum boards are often produced in sizes 1,200/2,500/6 mm or 1,200/3,000/6 mm. A moisture-resistant sheet often has parameters of 1,200/2,500/12.5 mm (less often - with a thickness of 9 mm).

Photo 12 - Flexible, 6 mm (1200x2400 mm) arched

As for the length of the sheet, the step in changing dimensions is 500 mm: 2,000 mm, 2,500 mm, 3,000 mm, etc. A sheet 3 meters long is one of the most popular, because... By technical advice walls need to be sewn up to their full length (ceiling heights are typical apartment is 2.5-2.85 m).

The standard sheet width is 1,200 mm.

Photo 13 - Single-layer cladding on a frame made of CW and UW profiles - work flow diagram and material consumption

Drywall thickness

The thickness of gypsum plasterboard used in residential construction ranges from 6.5 mm to 12.5 mm. In this case, the thickness of the sheet varies depending on the purpose of the material.

IMPORTANT! The minimum gypsum board thickness of 6 mm is used only in sheets arched plasterboard to improve sheet bending.

Wall gypsum board with a thickness of 12.5 mm, ceiling - 9.5 mm (sometimes 12.5 mm with a mandatory increase in the frequency of installation of the profile), moisture-resistant and gypsum board - 12.5 mm each.

Photo 14 - KNAUF standard 9.5 mm

Drywall weight

When working with a material, it is important to take into account its weight: in accordance with it, fasten the frame elements in one way or another, and select fastening tools.

By generally accepted standards:

the weight of 1 m² with a thickness of 6.5 mm is 5 kg;
weight 1 m² thickness 9.5 mm − 7.5 kg;
weight 1 m² thickness 12.5 mm − 9.5 kg.

Sheet edge type

There are several types of longitudinal sheet edges (the diagram is shown below).

Photo 15 - Types of longitudinal edges

On sale you can find gypsum boards with edges such as PC (VR, KR), PRO, UK (AK), PLC (HRK), KS (VA), ZK (RK), PLUK (HRAK), VARIO, KPOS (gypsum fiber is produced with edges PC and FC).

Type	Characteristic
	Rectangular longitudinal edge. This type of drywall is used for “dry” installation, i.e. the joints of the sheets will not be laid after installation. This type is most often used in floor slabs and standard gypsum fiber sheets. The sheet is suitable for internal layers when making multi-layer sheathing or for forming packages from plasterboard sheets when filling the internal cavities of partitions (double plasterboard).
UK (lat. - AK)	Longitudinal beveled edge. They are subject to puttying using reinforcing surface sealing tape. Sealing seams at the joints of such sheets is carried out in at least three stages - the process is quite time-consuming.
	Modified beveled longitudinal edge with a slightly flattened shape (found only on Rigips plasterboard sheets). Joints are connected only with reinforcing tape
	Semicircular longitudinal edge. Reduces the labor intensity of the seam sealing process. For this type of sheet it is also not necessary to use reinforcing tape. Filling the seams with high-strength putty is performed in 2 layers.
	An analogue of the PRO edge from the Lafarge Gips companies, as well as the Polish branch of this company - Lafarge Nida Gips. The joints are connected only with reinforcing tape.
	Slightly rounded longitudinal edge. This type of joint can be puttied without additional gluing of reinforcing tape.
	One of the options for a semicircular beveled edge with a flattened shape, produced only on Rigips plasterboard sheets. The sheets can be joined using putty compound with or without reinforcing tape.
	Folded longitudinal edge. This type of edge is mainly found only on gypsum fiber sheets. Reinforcement of the edge of the FC under plaster is done with paper tape (serpyanka).
	Semi-circular, slightly beveled edge (alternative to HRK edge). To seal the seams, the joint is sealed with reinforcing tape and puttied. This version of the plasterboard edge allows the use of joint sealing technology for AK edges, as well as filling joints using HRK edge board technology.

Photo 16 - VOLMA moisture resistant 2500x1200x9.5

Photo 17 - GKLV sheet 1200*2500* 9.5mm MAGMA

In home repairs, sheets with beveled edges on the front side of the sheet are most often used - these are edges of the UK and SHTUK types.

IMPORTANT! When cutting slabs, a cut edge inevitably appears, and there is no protective layer of cardboard on the cut edge, so before processing the seams of such sheets, a chamfer is made on the edges with a plane or knife. Next, use the putty mass, covering the seam with reinforcing tape.

Photo 18 - Knauf restoration (GKLR) 2500x1200x6.5 mm

Brand and manufacturer

In terms of price/quality ratio, the German company KNAUF remains the permanent leader, holding up to 70% of the drywall and components market.

Among foreign manufacturers, one can highlight the French company Compagnie de Saint-Gobain SA (it owns trade marks Rigips (Rigips), Giproc (Giprock) and Nida Gips (Nida Gips) and Scandinavian manufacturer

The correct choice of material is the key to obtaining a high-quality and durable surface. For quick leveling of vertical bases, the most preferable option is gypsum plasterboard slabs, but to perform the cladding, you need to choose the correct sheet size. The thickness of the drywall is determined based on the characteristics of the structure being created.

GCR is divided into categories depending on the functions and characteristics performed:

Ordinary. It is used in residential premises, offices, service rooms. According to the standard, objects must have a constant positive temperature and humidity no more than 65%. A simple board consists of plaster, lined on both sides with cardboard. The products are gray in color and marked according to GOST.
Moisture resistant. GKLV refers to special materials that are used for cladding walls and erecting partitions in rooms with high humidity. This is an excellent solution for a bathroom and shower room, hallway, loggia. Improving the quality of the material is achieved through additives in the composition. Additional components also increase resistance to fungus and mold. Impregnation of the outer coating helps neutralize the harmful effects of water, but the sheets are not able to maintain their structure during prolonged direct contact with liquid. The products have a greenish tint.
Fire resistant. The material is used for cladding areas that experience constant temperature effects. The product is suitable for cladding areas prone to fire and evacuation corridors. Such properties are achieved by adding reinforcing fibers to the composition, which significantly strengthen the structure of the slab. But the integrity of GKLO upon contact with very high temperatures or an open flame is maintained for a short time (from 30 to 60 minutes). The exact values are indicated on the labeling. The fire-resistant material is pink in color.
GKLVO. A universal variety that combines high levels of moisture resistance and fire safety. Products are optimal solution for attic rooms and ventilation. The material has a green tint and red markings.
Arched. A special type that bends well is used to create complex architectural forms.

There are many varieties of plasterboard sheets, but the most popular are simple, waterproof and fire-resistant plasterboard, other models are considered highly specialized and are used for special work

Regardless of category, main purpose plasterboard material– leveling the bases. The slabs are laid on the frame, or less often they are glued directly to the surface. The resulting coating is suitable for any finishing process.

Standard sheet thickness

The dimensions of the gypsum board slab are determined regulatory documents: width – 120 cm, length – from 2 to 3 m in increments of 50 cm. This is the optimal gradation that allows you to quickly make the necessary calculations.

Material may differ from different manufacturers certain parameters, but absolutely all brands comply with the thickness standard

Particular attention is paid to thickness, since it is this indicator that affects the weight and strength of the structure. Products are conventionally divided into ceiling and wall products. The first group includes products with a thickness of 9.5 mm, which is explained by the need to reduce the load. The second type includes several variations:

Regular gypsum board. The standard value is 12.5 mm. This thickness of gypsum board slabs for walls is used for simple finishing of vertical surfaces. The cladding has good stability and contributes to sound insulation.
Moisture resistant variety. Has similar dimensions. Material used in small rooms, so the thickness is minimal.
GKLO boards are characterized by increased strength even at 12.5 mm, but for objects that need more protection, sheets with a thickness of 15 and 18 mm are produced. Working with such products is much more difficult.
GKLVO. The dimensions of the variety are standard, but some manufacturers produce products with a thickness of 1.5 cm for situations where it is necessary to increase reliability.
Arched. This option is used to sheathe certain areas of the walls where it is necessary to create a complex geometric shape, therefore the minimum thickness of the material is 6.5 mm.

In the marking, which must be present on outer covering, all parameters are indicated.

On a note! Although product sizes are standard, it is recommended to purchase products from the same manufacturer.

How to choose drywall

Conventional cladding for leveling surfaces differs from the construction of partitions, so it is necessary to proceed from the specific situation.

Optimal options for walls:

For rooms with stable humidity, a standard type of gypsum board with a thickness of 12.5 mm is used. Such cladding must be carried out in compliance with certain requirements.
Rooms with high humidity are sheathed with moisture-resistant products of the same thickness. The structure of the material is quite durable and can withstand the weight of ceramic tiles.
Vertical surfaces that need to be protected from fire are finished with fire-resistant sheets 12.5 mm thick, difficult areas - 15 mm.

Increasing the strength of the partition is possible due to a thicker sheet or creating a multi-layer structure from plasterboard of standard thickness

Partitions can perform several functions and experience different loads, so the following rules must be taken into account:

Simple dividing structures (including decorative ones) are lined with 12.5 mm thick plasterboard.
If the expected load per 1 m2 is up to 50 kg, it is recommended to choose a thickness of 15 mm.
When the impact exceeds 70 kg, 18 mm sheets are used.

Partitions are strengthened by increasing the number of layers of drywall.

Conclusion

The load on the walls, ceiling and partitions depends on the thickness of the gypsum plasterboards. To choose best option, it is necessary to determine the main functions and configuration of the future surface. Although the standard thickness of products for vertical bases is 12.5 mm, there are situations where reinforcement is required, this means choosing thicker plasterboard.