Sewerage

How to lay tongue-and-groove blocks. How to build partitions from tongue-and-groove slabs (PGP)

The appearance of this material was caused by the need to reduce the complexity and cost of masonry.

Judge for yourself - one tongue-and-groove gypsum slab 66.7 cm long and 50 cm high replaces 14 one-and-a-half silicate bricks or 20 pieces of single red ones (250x120x65mm).

For a silicate tongue-and-groove slab, these figures are more modest (5 and 7 bricks, respectively), but also quite acceptable for speeding up and reducing the cost of work.

Partitions made of tongue-and-groove slabs (PGP) are designed for installation in residential and public buildings with a ceiling height of not more than 4.2 m.

Since such plates have a large side surface and a small width (from 8 to 10 cm), then to increase the stability of the masonry on the side faces, they make a tongue-and-groove lock. This design solution simultaneously increases the evenness of the partition, since the slab sits exactly on the longitudinal seam and is securely connected to the adjacent one.

Gypsum tongue-and-groove boards

They are made according to the casting technology from gypsum grades G-4 or G-5.

Building gypsum is an environmentally friendly and breathable material. Therefore, partitions made of it comply with strict sanitary and hygienic standards governing the quality finishing materials. To improve the performance and strength characteristics, plasticizing additives are added to gypsum.

Modern gypsum tongue-and-groove boards, depending on the degree of moisture absorption, are divided into ordinary and moisture resistant. To reduce water absorption, granulated blast-furnace slag and Portland cement are added to the feedstock. In order to distinguish such plates from ordinary ones, they are painted green.

Standard gypsum partition blocks can only be used in buildings with dry and normal humidity levels, and moisture-resistant (hydrophobized) blocks can also be installed in wet rooms(according to the requirements of SNiP II-3-79)

Tab. No. 1 Main specifications gypsum tongue-and-groove slabs

In terms of thermal insulation, a tongue-and-groove gypsum board 80 mm thick is equivalent to concrete wall 400 mm thick. Its noise insulation coefficient is from 34 to 40 dB, which is a good indicator for partition structures.

The fire resistance of solid gypsum blocks is very high. They are able to withstand direct exposure to fire for 3 hours (temperature about +1100 C) without loss of bearing capacity.

To reduce the weight of the masonry, hollow gypsum boards are produced. standard size 667x500x80 mm. Their weight is almost 25% less than that of corpulent ones (22-24 versus 30-32 kg).

In addition, there is a gradation of gypsum boards depending on the shape of the ridge and groove (rectangular and trapezoidal). However, this parameter does not significantly affect the quality and strength of the partitions.

Silicate tongue-and-groove slabs

The technology for the manufacture of silicate boards consists in preparing a mixture of quartz sand, water and quicklime, which is then pressed and placed in an autoclave chamber. There under the action high temperature and pressure, a strong lime-sand conglomerate is formed.

Silicate tongue-and-groove blocks for partitions have a higher mechanical strength compared to gypsum blocks and a lower level of water absorption. Therefore, they can be used without restrictions for the construction of self-supporting structures of interior walls and for the construction of partitions in wet rooms.

The weight of such a silicate block is 15.6 kg at a density of 1870 kg/m3. Gypsum boards have a lower density - 1570 kg / m3, which has a positive effect on the quality of heat and sound insulation.

Tab. No. 2 Main technical characteristics of silicate tongue-and-groove plates

Silicate boards resist fire better than gypsum boards. They do not emit toxic gases and do not conduct electricity. In addition, the tongue-and-groove lock dampens sound well.

The gas permeability (breathability) of the silicate baffle block is at high level and provides a comfortable indoor climate. This material, even with significant fluctuations in humidity, does not deform or rot.

Manufacturers and prices

The tongue-and-groove blocks produced under the brands Knauf (Knauf) and Volma are in high demand today. The reasons for this are the predictability of their strength characteristics and high accuracy geometry. This reduces the cost and labor intensity of finishing work.

Such structures can not be plastered, but, having primed, immediately paste over with wallpaper or paint.

To date, on the building materials market, you can find offers for the sale of tongue-and-groove plates on average from 200 rubles per piece.

Mounting Features

The laying of partitions from tongue-and-groove blocks is carried out after the installation of the supporting and enclosing structures of buildings is completed, before the start of the installation of a clean floor and finishing work.

When re-planning or reconstructing residential and civil facilities, tongue-and-groove partitions can be erected not only single, but also double. The last option is used in cases where it is required to perform a hidden gasket engineering networks or insulate a partition, one side of which goes into a cold room.

At the facility, the installation of tongue-and-groove slabs is reduced to joining at the seams, with periodic control of the verticality and horizontality of each row. When assembling interior partitions, the plates are placed both with the groove down and up. The norms recommend that they be laid with the groove up, since in this case the mounting adhesive mixture is evenly distributed in the tongue-and-groove space.

As an adhesive base for installation, you can use a standard adhesive for aerated concrete or Fugenfüller putty.

Mounting sequence

The base under the partition is leveled cement-sand mortar, after which the first row of partition plates is placed on it according to the level. The surfaces of the groove and crest of each plate before joining are covered with an adhesive solution so that the thickness of the seam at the joints does not exceed 1-2 mm.

Installation is carried out with dressing of the connecting seams. To create an elastic connection to the enclosing and load-bearing structures, tongue-and-groove partitions are fastened with special brackets.

The bracket is installed in the groove of the slab and fixed with a self-tapping screw to the floor panel or with an anchor dowel to the building envelope.

In addition, in such joints, the regulations recommend the use of cork or bituminous felt gaskets, installing them around the entire perimeter of the outer joint.

If the width of the doorway does not exceed 80 cm and only one row of tongue-and-groove plates will be installed above it, then the norms allow not to use a jumper. Its role is played by a door frame or a supporting structure, which is removed after curing with an adhesive solution (Fig. 1)

Picture 1

For larger openings installation of a steel or wooden lintel beam above it is mandatory (see Fig. 2)

All areas of contact of partitions with bearing walls and overlaps are sealed with gypsum mortar.

The installation of tongue-and-groove plates for the installation of partitions has its advantages. This material has a convenient configuration, relatively light weight, which greatly simplifies the installation work. Also, the plates are equipped with a special lock, which ensures their secure fastening.

Important! The arrangement of interior partitions with the help of tongue-and-groove plates occurs very quickly (almost in a matter of hours). To achieve such a speed of installation, you need to have a lot of experience and perfect knowledge of technology.

The cost of building walls from tongue-and-groove slabs at San Sanych

If you are looking for masters for installing walls from tongue-and-groove blocks, pay attention to our company. We have been working in Moscow for a long time and have received many positive reviews. This happened due to a responsible approach to the performance of all operations. We carefully listen to the wishes of the customer and fulfill them in accordance with the requirements of regulatory documentation. The supply of building materials directly to the object is carried out only by trusted companies that provide the best quality at low price. The cost of installation work will definitely pleasantly surprise you. Prices mainly depend on the amount of labor and materials used.

Preparatory stage

Preparing the premises for the installation of tongue-and-groove blocks is as follows:

the floor and walls in the places where the future partitions fit must be perfectly even. Otherwise, the desired quality cannot be achieved;
all existing irregularities are eliminated by pouring the screed, grinding. Also, without fail, cracks are closed on the base;
the surface of the walls, ceiling and floor is primed;
markings are applied that reflect the location of the future wall.

Block stacking

Before installing the first row of plates that are intended for this, cut off the legs. This will ensure that they are firmly attached to the floor. To fix the tongue-and-groove plates, a special adhesive composition is used. It is applied to all their ends in order to securely fasten them together. Also, a special lock is used for this, which implies the presence of grooves on the surface of the blocks. After installing the first row, it is fixed to the wall and to the floor with dowels. Further installation continues in the same way.

When remodeling an apartment or building a private house, you have to install new partitions. Finding material for them is not so easy. It should not create an excessive load on the floor, it should be reliable and have good bearing capacity. And it is also desirable that the installation is simple and fast, and the price is low. There are not so many materials and technologies that meet these requirements. This is the tongue-and-groove slabs. In this article we will talk about the tongue-and-groove.

What is this material and its types

Tongue-and-groove slabs (abbreviated GWP) or blocks - large format construction material for the construction of partitions in the form of a plate, on the ends of which a comb (thorn) and a groove are formed. Hence the name - tongue-and-groove slabs. They are:

Plasticizers and hydrophobic (water-repellent) additives are added to the solution to improve the properties. Gypsum GWP has another name - gypsum boards. It is understandable: the gypsum mortar is poured into molds. Here is the "source" of this variant of the name.

Moisture resistance and void

According to the area of use, tongue-and-groove plates can be intended for normal conditions operation (normal, standard) or for damp rooms (moisture resistant). Moisture resistant for the best identification are tinted in greenish color.

Both gypsum and silicate tongue-and-groove slabs are solid and hollow. Solid ones are more durable, hollow ones, due to their lower weight, create less load on the floors. The choice between solid and hollow should be made based on several factors:

Soundproof characteristics. A monolithic material without voids conducts sounds better, so it is used if the sound insulation will be made in a separate layer (the best option) or if it is not so important.
Partition loads. If you need to hang shelves, furniture on the walls, fix some heavy objects, it is better to use a monolith.

wooden floors

If you need to consider several factors, soundproofing is considered last. Noise protection can be improved by using special technology installation (on vibration damping pads), as well as by making an additional layer of soundproof materials.

Specifications

If we compare ordinary and moisture-resistant tongue-and-groove plates, the differences in characteristics are only in water absorption and strength. moisture resistant, due to more hydrophobic additives, almost do not absorb moisture. Due to the large number of these additives, they are more expensive, since these additives are expensive. At the same time, they increase strength (M50 compared to M35).

By the way, you can check “on the spot” whether you really have moisture-resistant GWPs or just standard ones painted green. Just pour some water on the surface. Standard plates will quickly absorb it, and on water-repellent ones it will stand in a puddle for a long time.

If we compare gypsum and silicate partition blocks, the increased strength of the latter immediately catches the eye - M150 compared to M50 and M35. That is, the strength of silicate slabs is comparable to concrete of not the worst brand. If you are going to hang something very heavy on the partition, it is better to use silicate. Manufacturers also produce blocks with a thickness of 115 mm, which are called inter-apartment.

How else do silicate boards differ from gypsum counterparts? The fact that in the standard version they do not have such a high absorbency. It is not as low as moisture-resistant blocks, but this material can be used without problems in any wet areas (13% compared to 26-32%). The disadvantages of this material are greater weight (with equal dimensions) and lower thermal insulation characteristics.

silicate or gypsum?

If we compare the soundproofing characteristics of gypsum and silicate blocks, the latter, with equal parameters, conduct sounds worse (40-43 dB for gypsum and 48-52 dB for silicate). So for better sound insulation we choose silicate.

But silicate blocks of the same size have more weight and higher thermal conductivity (conduct heat better). The key in choosing is weight, since sound and heat insulation can be improved with the help of additional layers of special materials, but there is no way to reduce the weight of the partition. And if its mass is critical for overlapping, nothing good can be expected.

How to build from tongue-and-groove slabs

In order for a partition made of tongue-and-groove blocks to be reliable and stable, certain conditions must be met:

In general, it is necessary to strictly follow all the recommendations, strictly follow the technology. Then tongue-and-groove partitions do not differ in strength and reliability from brick ones, but are built many times faster.

markup

The laying of the partition wall from the tongue-and-groove begins with the markings. If you have a laser plane builder, everything is simple: you unfold the plane, draw lines on the floor, walls, and ceiling. If there is no such tool, you will have to spend more time. A plumb line will be required. The one that does not fit in a smartphone is not a measuring tool. It is better to buy at a hardware store or make from twine and a centered weight.

We draw the first line on the ceiling, with the help of a plumb line we transfer it to the floor. By connecting the points on the floor and ceiling, we get the lines on the walls. As a result, a closed marking was formed to align the partition.

We examine the base on which we will put the blocks. It should be perfectly aligned when viewed along the dividing line, and should not lean forward or backward when viewed across.

If there are door or window openings in the partition, they must also be marked. With the door, everything is simple - we designate them on the floor. It is more difficult with window ones - beacons are needed on the walls and ceiling.

Foundation preparation

As already mentioned, the base must be perfectly flat without a roll in any direction. If there are deviations, concrete floor fill in the leveling screed (not lower than M150). To do this, you will have to assemble the formwork into which the solution is poured. The minimum layer thickness is 3 cm. To get a guaranteed quality result, use a self-levelling compound. Just keep in mind that “they level themselves” are not too large errors. You still need to distribute the composition manually. Just run with a spatula, dispersing the solution along the entire length, and small irregularities are leveled due to the increased fluidity of the material.

We cover the poured concrete with polyethylene, leave it for about a week. This is if the temperature in the room does not fall below + 20 °, during this time it will gain 50% strength. This means that you can work with him. If the temperature is lower, the period increases. At a temperature of 17 ° C and a little lower, 2 weeks are already needed ... We coat the even base with concrete contact - it will improve the adhesion of the base with the adhesive composition, on which we will put the GWP.

If we put tongue-and-groove blocks on a wooden floor, the partition should pass over the beam - this is the time. Second - we level the base with a dry beam. It must be fixed so that it is also aligned horizontally in all directions. We fix the beam to the floor with nails or screws. If there is a joint, we connect it into half a tree, additionally smearing the joint with wood glue and fastening it with nails.

To improve sound insulation

The main disadvantage of gypsum tongue-and-groove partitions is not too high sound insulation. For silicate blocks, the situation is better, but also not ideal. Therefore, we recommend laying vibration-damping tape along the perimeter of the partition. It's no secret that most of the sounds are transmitted through vibrations through the floor, ceiling and adjoining walls and elastic pads greatly improve the situation.

Under tongue-and-groove slabs, you can use a strip of bituminous felt or cork with a density of 250-300 kg / m³. The strip width is slightly less than the width of the blocks. It is laid on a leveled base on the same binder that you will use to seal the joints between the plates. The solution is applied to the surface treated with concrete contact (after drying) with a layer of 2-3 mm. Lay the tape, rolling it with a roller, expelling air bubbles. The emerging solution is removed with a spatula. Thus, the tape is glued to the floor, walls, ceiling. Horizontalness is checked using a bubble level.

Preparation of plates for installation

If silicate tongue-and-groove boards are used, no preparation is required - their upper and lower surfaces do not have a groove / ridge. They are absolutely even (as in the photo below).

When working with a gypsum tongue-and-groove, first you need to decide whether you will place the blocks with a spike or a groove up. It is more convenient to work when the groove is directed upwards, but the opposite position is not a mistake either.

If you decide to put the GWP up with a groove, you need to cut the spike on all blocks of the first row. The easiest way to do this is with a hacksaw. The resulting cut is uneven. We level it with a planer.

Note! The cut of the plate must be absolutely even. It depends on how strong the wall of tongue-and-groove plates will stand. And the trimmed tongue-and-groove plates should be of the same height.

The seam between the blocks does not exceed 2 mm, so even small deviations are almost impossible to correct. Therefore, we align carefully and carefully. After leveling, the dust is swept with a brush and you can begin to build a wall.

First row

The sequence of actions when laying a wall of tongue-and-groove slabs is simple and very similar to a brick one. There are only a few features. Since the partition usually adjoins the wall, if a spike turns out to be turned to it, it is cut off with a saw, the surface is leveled with a planer, and dust is removed. Next, the procedure is as follows:

Thus, the entire row is built. The last slab usually has to be cut. It could be the beginning of a doorway or just the last slab in a row. Its length should be 3-4 mm less than the remaining gap - the seam gap. You should not increase the gap - stability will decrease. For greater confidence, the joint can be reinforced with a metal corner. Two or three corners for each row. It's enough.

Second and subsequent

The tongue-and-groove slabs are laid with a spacing of seams - like bricks. The shift of the second row can be half or a third of the length. The best way- half. We cut off half of the whole plate, if necessary, cut off the spike, install it. Further laying is no different. The third row again starts with a whole block, the fourth - with a half, etc.

After laying each block, check whether it is correctly positioned. With such block sizes, the error accumulates very quickly. Therefore, we first check each delivered block with a level for verticality / horizontality. and then, applying the bar horizontally, grabbing neighboring blocks and swiping from top to bottom, we look so that there are no gaps. We also check the absence of deviations in the vertical plane.

Control of verticality and horizontality is one of the main tasks

Injection

If the wall being erected from tongue-and-groove blocks has an outer corner, we start laying from it. To make it easier to work, we create a corner support. It can be a corner with fairly wide shelves or two boards connected at 90°C. We put the structure in place, check the correct installation, temporarily fix it to the ceiling and floor.

At one of the plates, we cut off the side spike, rest its edge against the set stop, align it, setting the direction with a mallet. At the second plate, we also cut off the side spike, apply glue to this edge, join it with the side surface of the installed plate, knock it into tight contact (the diagram in the figure above).

To install the second row, it is necessary to make a cut in the already installed plate under the lower spike of the next block. We take a hacksaw for metal, we make files. Then, using a wall chaser (a tool for working with foam concrete, but it is also useful for laying wiring in the GWP) or any solid tool, we remove the excess, align the groove, making it the same size and shape as the groove. With a brush or construction vacuum cleaner remove the dust.

We put the second row starting from the other side - so that the seam is on the other side of the corner. We apply a solution to the end of the lower block. We take half of the block, cut off the side spike, install the lower one into the prepared groove (the rightmost diagram in the figure below). He, too, must rest against the established corner. We carefully align the installed tongue-and-groove plates, checking the verticality and the absence of even the slightest deviations.

Branch

It is also necessary to consider a branch from the partition at a right angle. Partitions will be more reliable if they are made with dressing (middle diagram in the figure). All three plates that are installed have a side spike cut off. The joints are coated with adhesive, three blocks are adjusted close to each other with a mallet. In this case, it is also necessary to control that the partition is perpendicular - that is, the angle is 90 °.

We build the second row so that the middle of the block is above the junction. To install it, you will also need to make a groove in the protrusions of the lower block. Further, these rows alternate.

There is another way to put a T-shaped partition from a tongue-and-groove - without bandaging. To do this, simply lay out the wall (which in the letter T is the top crossbar). To the finished wall, end-to-end, attach the second partition (left diagram in the figure above). To increase the reliability of the connection, metal reinforced perforated corners are installed at the junction.

Doorway

The doorway in the wall of tongue-and-groove slabs can be made with or without a reinforcing beam. It can be done without a reinforcing beam if the width of the opening does not exceed half the length of the block. So a doorway 900 mm wide can be made without a beam if the ceiling is made of PGP 900 mm long. Moreover, the joint of the plates should be located almost in the middle. A slight offset is allowed (by 10 mm), but that the length of the entire part of the block to the right and left of the opening should not be less than 445 mm.

At the time of installation, before the glue sets, the lintel above the door is reinforced with an emphasis (a board supported by a pole resting on the floor) or a structure assembled from boards as in the right diagram. In this case, first assemble the U-shaped jumper from the boards, fix it with self-tapping screws to the blocks located below (control the horizontality of the jumper). Apply a block, mark how to cut. It turns out two L-shaped blocks of the same or almost the same size. Having applied the solution in the right places, they are installed.

If we use tongue-and-groove slabs 667 mm long, it is obligatory to install a reinforcing beam under the opening of more than 660 mm. For the manufacture of beams, you can use a metal corner, channel, fittings, metal strips of considerable thickness. Can be used dry wooden beam 50 mm thick or more (pretreat with an antiseptic). The beam should protrude 400-450 mm beyond the doorway.

You can install tongue-and-groove partitions yourself, because this does not require special skills and knowledge. The material is very easy to use, does not require careful surface preparation, installation lasts a few hours. Gypsum boards, from which partitions are built, have a number of advantages, and therefore are increasingly used in private construction.

Properties and characteristics

Often tongue-and-groove plates are used: what is it? This material is a monolithic rectangular slabs of gypsum with an admixture of various additives. The features of the plates are longitudinal grooves and protrusions (ridges) at the joints, providing additional strength to the finished structure. The elements are connected with glue.

Properties of tongue-and-groove plates:

the material is non-toxic;
high resistance to temperature fluctuations;
have no smell;
resistant to rot and insect activity;
have high sound absorption;
vapor permeable;
easily processed with carpentry tools.

For rooms where humidity is high, moisture-resistant GWPs are produced, which differ from ordinary ones in a light green color. In their manufacture, hydrophobic additives are added to natural gypsum, which are absolutely harmless to humans.

Main technical characteristics:

standard size - 667x500x80 mm;
weight of a hollow slab - 22 kg, solid - 28 kg;
density - 1030 kg / m³;
compressive strength - 5.0 MPa;
bending strength - 2.4 MPa;
high fire resistance.

Advantages of tongue-and-groove partitions

PGP partitions are assembled according to the principle of a constructor, so one person can install about 30 m² per day. Even in the absence of experience, it will not be difficult to understand the process, just read the instructions and look at the photo. The main thing is to correctly mark up the partition. The advantages of the material are:

when installing partitions from tongue-and-groove plates, there are no wet processes, wallpapering can be carried out immediately after installation work;
with a small thickness, the partitions are distinguished by good strength and thermal insulation;
due to the absence of voids in the connecting seams and gaps at the junction with the main wall, the sound insulation in the room is improved;
the ductility of the GWP joints eliminates the appearance of cracks and deformations;
the material can not only be pasted over with wallpaper, but also painted, tiled, covered with decorative plaster.

Partition wall installation technology

For 1 m² of a single partition, 5.5 boards and 1.5 kg of special glue are required. Before starting work, the material must be brought into the room and kept for at least 4 hours. The temperature inside the room should not be lower than +5°C.

Additionally you will need:

cork gasket;
building level;
marker and tape measure;
container for glue and water;
drill with a nozzle;
trowel;
rubber mallet;
staples made of galvanized steel;
self-tapping screws and anchor dowels.

Begin work with cleaning the surface at the junction of the structure. Wallpaper and peeling finish must be removed, large irregularities smoothed out cement mortar or putty. If the wall is even, the paint (plaster) holds firmly, it is enough to remove dirt and dust. Prepare the floor the same way. Next, markings are made on the floor under the partition, the places of the openings are marked. Using a level, the marking line is transferred to the ceiling and walls.

Glue is prepared: water is poured into a container, a dry solution is poured, mixed with a nozzle and allowed to brew for 3 minutes. The proportions for kneading are indicated on the package. Different manufacturers may differ, so you should carefully read the instructions. A strip of glue is applied along the marking and a cork lining is applied. As soon as the glue sets, you can mount the first row of plates.

A layer of glue is applied to the lining, after which the comb on the long side of the first plate is cut off and installed with this side down. The GWP is leveled, the side cut is coated with glue and the second plate is mounted. Each fragment must be checked by level, correcting with a rubber mallet. For the second row, the first slab is sawn in half to offset the vertical seams. For connecting partitions made of tongue-and-groove plates with bearing wall staples are installed at the junctions. One end of the bracket is fixed with screws to the plate, placing it in a horizontal groove, the second is fixed with anchor dowels to the wall. The step of such fasteners is through 2 plates.

When making openings, there are also some nuances. If there is only one row of slabs above the opening, and the width is not more than 80 cm, it is enough to put a temporary support until the glue dries. With a larger width, it is imperative to mount a jumper: wooden beam or a metal channel of the appropriate section.

The upper edge of the last row of GWP is sawn at an angle to avoid the formation of voids when filling the seams.

The distance from the edge of the slab to the ceiling should be 1-3 cm. After installing the last element, the gap between the partition and the ceiling is sealed with a gypsum mixture or filled with mounting glue. On this, the installation of partitions from tongue-and-groove plates is considered completed. Mounting on such walls of shelves, cabinets, mirrors and other items should be carried out taking into account the load. Up to 30 kg / cm fasteners are made using anchor plastic dowels, at higher values, galvanized bolts are used, passing through the entire thickness of the plate.

Conclusion on the topic

When redevelopment of an apartment, partitions made of PGP are the most profitable solution. In addition to zoning space, they create additional sound and heat insulation, which allows you to save on materials. But the main advantage is still considered ease of installation, because the services of specialists are very expensive. If you follow the instructions exactly, carry out each stage with high quality and accuracy, the partition will turn out no worse than that of professional builders.

You are doing a serious renovation of an apartment with a redevelopment or you have bought a new building with a free layout, you will definitely face the task of installing or several partitions. If you have the opportunity to hire workers, this article will help you control them, if you do the repairs yourself, in the article I will show you step by step how to install a gypsum tongue-and-groove plate (GWP) or a tongue-and-groove partition with your own.

Two ways to install the PGP partition

It is clear that any interior partition does not hang in the air, but adjoins the floor, walls and ceiling of the room. The installation of a tongue-and-groove plate according to the technology involves two types of partition installation, depending on the connection method:

1. Elastic connection (fastening). Elastic fastening involves the installation between the edges of the partition and the walls, ceiling, floor of a layer of soundproof material. Available soundproofing material is cork. It is important to understand that elastic fastening is done where the customer, that is, you, needs to improve the soundproofing qualities of the partition. There are no other criteria for flexible installation of GWP. 2. Monolithic connection (fastening). Monolithic mount assumes direct contact of the partition plates with the walls, floor, ceiling through the mounting adhesive.

Material for mounting partitions made of PGP (groove-and-groove plates)

For work you will need:

1. Gypsum tongue-and-groove slab (GWP). Producers: Knauf, Volma, etc. In terms of GWP, we are interested in its thickness. Plates with a thickness of 80 and 100 mm are common. The number of plates is calculated from the area of future partitions with a margin of 10% for undercuts. GWP dimensions:

667x500x80 mm for calculating 3 plates per meter: 28 kg / 1 plate.
667x500x100 mm for calculating 3 plates per meter: 37 kg / 1 plate.
900x300x80 mm for calculating 3.7 slabs per meter: 24 kg / 1 slab.

Note: If the installation of the tongue-and-groove slab is carried out in a room with normal humidity, a standard PGP slab is purchased. For partitions in wet rooms, we buy a hydrophobized (moisture resistant) PGP board. Moisture resistant Knauf board is marked with a green stripe.

2. You will need mounting plaster glue. It is sold in 25 kg bags. For bathrooms, tile adhesive can be used. 3. For elastic fastening of the tongue-and-groove partition to the walls and ceiling of the room, you can buy special brackets. Such brackets are marked C2 (for 80 mm GWP) and C3 (for 100 mm GWP). You can replace the brackets with direct hangers (PP 60/125) used in the installation of plasterboard structures.

4. For elastic connection only! You need a sound deadening pad. These are strips 100-150 mm wide, best from cork. 5. If the floor is uneven, you will need a dry cement mixture to level the floor at the installation site of the partition.

What thickness of GWP to choose

Interroom partitions from PGP are made in one layer. Technologically, it is impossible to make a straight GWP partition higher than 3600 mm and wider than 6000 mm. In apartments, there are usually no such walls, so there are no restrictions on the use of GWP boards for apartments.

Installation of a tongue-and-groove plate in an apartment

It is necessary to choose the thickness of the plates for the partition according to its size. The larger the partition, the thinner the plate. For partitions in a new building, it is better to choose PGP 100 mm slabs. For cladding the walls of the balcony and the partition in the bathroom, 80 mm of PGP boards are enough.

Tool for installation of partition walls GGP

For work you will need the following tool:

Saw: for cutting boards;
Drill or perforator: For fixing plates and mixing mortar. Nozzle mixer for drill;
notched trowel width 200 mm;
Spatula simple: 100 and 200 mm;
Horizontal level 500 mm long and 1500-2000 mm long.
Plumb for marking partitions;
Rubber hammer for upsetting slabs;
Clean container for mixing the solution;
Clean water for mortar and tool cleaning. Rags.

Do-it-yourself installation of a tongue-and-groove plate - step by step

Prepare a place for mounting the partition. Remove debris, prime the junction of the partition.

The base of the partition must be horizontally flat. If the slope of the base is visible during the measurement, it is leveled with cement mortar. After the solution has dried, it is primed.
Mark the partition on the floor, walls, and ceiling. Use a plumb line or laser level for marking.
When the partition is elastically (soundproofed) to the floor, a soundproof strip is glued to the installation site of the partition on the assembly adhesive.

PGP boards can be installed both with the groove up and with the groove down. However, for reliable adhesion, mounting with the groove up is recommended.

Therefore, at the plates of the first row, you need to cut off the comb with a saw. Do not use a power tool for cutting, the amount of gypsum dust will be unreasonably large.
Cut boards in a partition row should not be narrower than 100 mm. Therefore, before installation, make a dry installation and try on the plates in place. If the last slab in the row is less than 100mm, cut the first slab in the row.

Install the first row of tiles with adhesive. The quality of the entire partition depends on the horizontality and verticality of the first and two subsequent rows, therefore, we actively use the building level to control the installation.

Starting from the first row, with elastic abutment, place reinforcing corners. The corners are attached to the GWP with standard self-tapping screws. To attach the corner to the walls, we use dowels with screws.

The number of staples on one side of the partition cannot be less than 3. That is, in an apartment with ceilings of 2700, we put the staples after the first, third and fifth rows.
We look at the photo, how the mounting adhesive fits into the groove of the bottom row.
The plates are installed with a spike in the groove with glue. We upset the plate with a rubber mallet. Remove excess glue squeezed out by the top plate with a spatula.

We constantly control the horizontal rows and the verticality of the partition.

Adjacency of the GWP partition to the ceiling

The adjoining of the GWP partition to the ceiling requires a separate paragraph.

Attachment of partition to ceiling

The correct connection of the partition to the ceiling is more difficult than to the wall. The last row of GWP slabs is cut at an angle. The corner should "look" at you. The distance from the bevel to the ceiling should vary from 10 to 300 mm.

When installing the last row of GWP, the beveled void between the ceiling and the slab is filled with mounting adhesive.

Installation of the tongue-and-groove plate is completed. After installing the tongue-and-groove partition, inspect it, check the vertical level of the partition. With the remaining glue, fill, if any, the voids between the plates. Remove excess glue squeezed out of the seams.

Further, after the glue has hardened, the joints of the partition with walls and ceiling are glued with reinforced tape and puttied. The partition itself is finished along with the walls of the room, usually puttied several times. Further, according to the repair plan (paint or glue wallpaper or something else).

About the installation of doors in a partition made of PGP, as well as the laying of communications in PGP partitions in the following articles. Subscribe by registering on the site.