Fields are one of the most important components of a room; it affects not only the interior of the room, but is also responsible for many technological properties. The first step in arranging this part of the room is leveling the concrete floor. On this moment on construction markets There are a huge number of materials with which you can make a screed. However, most of them require the addition of a wet component, due to which they take a very long time to dry. However, there is a technology by which you can continue further work with the floor the very next day, it is called Knauf-superfloor.

Knauf technology was invented by the company of the same name, which first began producing plasterboard sheets already in the 50s of the last century. In truth, such a dry screed is associated precisely with the use of plasterboard materials.

The Knauf superfloor laying technology is a modified version of the dry prefabricated screed. Knauf is a combination of bulk fine-grained material on which sheets of gypsum fiber material are laid. Due to this design, the soft bulk substance is compacted and becomes hard and becomes highly resistant to physical pressure.

The backfill for such a floor is fine-grained expanded clay, one granule of which does not exceed 4 mm in size. This sand is poured in a layer of 3 to 10 centimeters and leveled along correctly constructed beacons. Next, the embankment is covered with durable and fairly thick gypsum fiber sheets.

GVL or gypsum fiber sheets consist of a mixture of gypsum and cellulose. Unlike their plasterboard counterparts, they do not have a paper layer. This material is durable, fireproof and absolutely environmentally friendly.

According to German technology, the thickness of the Knauf screed should be no more than 20 cm thick.

The upper elements for the Knauf floor are two GVL sheets glued together, the dimensions of each of which are 1200x600x20mm. They are superimposed on each other with a slight offset of 5 cm, due to which locks are formed, along which the structures are connected to each other using self-tapping screws and glue.

Advantages of Knauf dry flooring

The Knauf backfill floor was called “Superfloor” for a reason. It has many advantages over wet screeds, which is why it is very popular in the field of apartment finishing. To make it clearer to you why this technology is considered so convenient, we advise you to familiarize yourself with the list of its advantages and disadvantages.

Advantages of Knauf superfloor:

1. Knauf flooring technology does not involve the use of wet substances. This feature makes it possible to use it in residential apartments, without the risk that moisture will penetrate into next room, not in need of repair.
2. Do-it-yourself installation of such a floor is a very real task. All materials are quite lightweight, and their installation requires only the equipment that almost everyone has.
3. Having installed the Knauf flooring system, you can immediately begin installing the finished floor covering.
4. Loose floors can be as thin as 8cm, so they don’t take away much from the height of the room.
5. If necessary, you can dismantle such a floor in a matter of hours. To do this, you will need only 2 tools: a jigsaw and a shovel.
6. Weight Knauf designs not very large, therefore, unlike a traditional screed, it does not have a strong impact on the supporting structures.
7. Knauf smart floor has thermal insulation properties, due to which there is no need to put additional thermal insulation elements on top of it.
8. Even a wooden floor cannot compare in its soundproofing properties with Knauf flooring.
9. Knauf prefabricated floor structures are an environmentally friendly and fire-safe material.

As you can see, the list of advantages of such a dry screed is quite long. It can be used not only in new buildings, but also for leveling the floor residential apartments. It is also ideally suited for structures such as warm and floating floors.

Disadvantages of Knauf flooring

Leveling floors using Knauf technology has virtually no disadvantages. Of course, the price of such a screed is slightly higher than that of traditional materials, but it pays off through a number of other benefits.

Some people believe that when laying Knauf on the very top floor, you can do without a moisture-proof film laid under expanded clay sand, but this is not so! Such a film carries not only water repellent properties, it resists the formation of condensation and serves as additional thermal insulation.

Another disadvantage of Knauf superfloor is its instability to moisture. However, not a single type of screed is waterproof. Fortunately, in the event of flooding, damaged parts of the Knauf floor can be replaced with minimal losses.

What is needed to install Knauf dry floors

There are several options for laying Knauf superfloor. The most complex of them involve the use of additional heat-insulating and sound-proofing materials, for example, polystyrene foam and porous fiber components. We will consider the most traditional option, which requires only sheets of gypsum fiber, as well as expanded clay mound.

View prices and technological characteristics necessary materials, you can visit the Leroy Merlin website.

First of all, you need to prepare necessary materials and tools. Only if you have all the components you will be able to quickly and efficiently install the Knauf screed.

Tools and materials required for installation of Knauf superfloor:

• GVL sheets, in slightly larger quantities than needed for the area of ​​the room in which the repair work will be carried out.
• Expanded clay backfill, the granules of which will not exceed 4 mm in size. For one square meter you need 20 liters of this material.
• Self-tapping screws (preferably from Knauf). For one square meter you need 12 screws.
• Special mastic or PVA glue.
• Edge tape, the footage of which will correspond to the perimeter of the room.
• Putty Knauf. For one square meter you will need 200 grams of putty mixture.
• Film with vapor barrier effect. It is necessary to take 20 centimeters more film than is needed for the floor.
• Knauf primer.
• Roulette is usually level.
• Drill and jigsaw.
• Drywall knife.
• Lighthouses.

Having everything necessary tools and materials, it will be easy for you to fill in expanded clay and lay gypsum fiber board sheets on it. You can purchase original materials Knauf company or find high-quality analogues from other manufacturers.

Knauf flooring technology

When you have acquired all the tools and materials, you can proceed directly to installing the floor. However, before this it is necessary to carry out some preparatory work, namely: remove protruding pieces of nails and reinforcement and cut off all large irregularities with a metal spatula. After this, you need to clear the surface of debris, and you can proceed directly to the installation of the Knauf structure.

Knauf floor installation step by step:

1. A vapor barrier film is laid on the floor. If you do not use a whole material, but several parts, then the overlap of the canvases on each other should be 20 cm.
2. It is necessary to lay along the walls edge tape in such a way that one edge melts on the floor, and its surface rests against the wall. This stage is necessary so that after the GVL shape changes due to temperature, the floor does not lose its attractive appearance.
3. Now you can install beacons. To do this, parallel slides-strips (no more than 10 cm high) of expanded clay are poured at some distance from each other, beacons are pressed into them and leveled.
4. Expanded clay is poured between the beacons and leveled using the rule. The beacons are removed, and the grooves from them are covered with the same backfill.
5. Installation of gypsum fiber board sheets should take place from the wall opposite to the floor. You need to lay a path made of gypsum fiber board to it so that you can move without deforming the backfill.
6. On one side of the slabs that will be adjacent to the wall, the edge is cut off so that in this place the slab turns out to be double. Next, the slabs are laid row by row. In this case, the slabs of each row are shifted relative to the previous one by 2.5 cm.
7. The folds of the previous row must be lubricated with adhesive before laying the next one. After assembling the entire structure, the glued joints are additionally fastened using self-tapping screws, in increments of 2.5 cm.

DIY Knauf loose floors (video)

Knauf-superpol is modern way leveling the floor. It has a number of advantages over traditional screed, which is why it enjoys ever-increasing hype. Use this technology in your home, and you will not notice how the renovation is completed!

Knauf floor elements are truly practical and convenient system to level the floor. They are designed to create the ideal base for any coating. These elements can be used for almost any type floor coverings In addition, they can improve the heat and sound insulation of rooms.

This type of flooring is designed to create a subfloor with normal humidity and dry conditions. Can also be used in rooms with high level humidity: bathroom, kitchen. In addition, they are perfect for both reinforced concrete and wooden floors.

Manufacturing materials

Knauf floor elements are the result of the latest developments, representing a combination of structural elements that are used to create a seamless floor surface. They are produced by gluing 2 hydrophobic gypsum fiber sheets, which gives the floor high strength and resistance to various types mechanical impact.

Pros and cons of technology

If we compare the technology of laying dry screed and traditional screed, we can immediately name the main pros gender Knauf:

• deadlines, because dry screeding is done in 1-2 days, which does not slow down the repair process;
• lack of dirt due to lack of wet technologies;
• simplicity of the process;
• not required special equipment;
• easy to hide communications;
• good thermal and sound insulation;
• comparative lightness of the screed, which can be placed even on wooden base;
• the result is a coating of high strength and perfectly smooth;
• you can lay any finishing coat, and immediately after completion of work.

From shortcomings The following floor elements can be noted:

• Instability to moisture. This technology cannot be used for basements and ground floors and unheated rooms. In addition, you should not install this floor in a room with high humidity.
• Great height. This drawback can interfere if the room does not have the ability to raise the floor.
• Price. The Knauf floor element is more expensive than its analogues.

At this stage, one of the highest quality and simple ways preparation bases for installation decorative covering is a loose floor or prefabricated dry screed floor.

It consists of the following parts:

• A floor element that creates an even, rigid layer on which any finishing coating can be laid.
• Dry backfill is a leveling layer that will tightly fill all the unevenness in the slabs.
• Edge tape - to suppress impact noise.
• GVL screws are a fastening element.
• PVA glue is necessary for gluing EP sheets together.
• Vapor barrier - to protect dry backfill from steam from the lower floors.

Installation technology for Knauf floor elements

If concrete base is already ready, then you can start the process installation Paul Knauf. First you need to cover the floor surface with plastic film, the thickness of which is at least 200 microns. This steam and waterproofer will protect the floor surface from the negative effects of wet steam penetrating from the lower floor. This will increase the time frame operation material.

Next, along the entire perimeter of the room at the junction of the walls and floor, you need to lay edge material. This is a good sound insulator, a lifesaver if you have noisy neighbors. After this, the preparation stage is considered complete.

Now you need to fill in the insulation expanded clay. They need to fill the entire area of ​​the room. But it is important that the thickness of the heat insulation layer is at least 2 cm. If this is not taken into account, then in the future the floor may begin to sag.

Bulk material will lie unevenly on the floor, so it is important to level out. To do this, metal guides are placed on it, which are set at the same level. horizontal plane. For this purpose, a building level and rule will be required. According to the guides, they usually pull towards themselves, thereby leveling the expanded clay.

After this, it’s time for direct installation. GVL slabs Knauf floor elements are glued together with offset two sheets of gypsum fiber. The result is folds that will play the role of locking joints.

The first sheet is placed in corner premises, and the edge of the fold is treated with glue. The second sheet must be attached to it so that the folds are connected, and a reliable and durable joint is obtained. But such a connection is considered fragile, for this reason screws are used for additional fastening. They are placed along the line of folds at a distance of 5 cm. In this case, the plates will not diverge, and cracks will not form.

Now all that remains is trim protruding edge of the edge tape, and also make finishing floor surface. Of course, it is not recommended to paint such a coating, but you can put linoleum, laminate, tiles or something like that on it.

As you can see, Knauf floor elements are truly good an option for those who want to finish repair work quickly and not have to deal with dirt and dust from cement.

The floor is an integral part of the room and affects not only the interior of the room, but also such indicators as temperature and humidity, and the level of thermal protection. Therefore, the international company Knauf, working in the field of construction materials production, has developed the Knauf-superfloor technology, which allows you to quickly complete high-quality installation subfloor for further installation of the finishing coating.

Knauf-superpol - what is it?

Knauf-superpol is a team design or a system that allows you to avoid “wet work” on the concrete screed and, accordingly, reduce technological interruptions associated with its drying.

Elements This system consists of glued gypsum fiber sheets, offset by 50 mm relative to each other, due to which folds are formed around the perimeter. The Knauf superfloor element has a total thickness of 20 mm and dimensions 1.2×0.6 m. With such a thickness, the floor element weighs little, but the resistance to loads of its surface reaches 20 MPa.

Dry soil serves as a leveling base for the elements of this system. backfill made of expanded clay (with a fraction size of 0−5 mm), ideally filling the space and having excellent thermal and sound insulation, as well as fire protection characteristics. If the expanded clay granules are larger, a slight characteristic crunching sound can be heard when walking in silence.

System floating Knauf flooring, as it is also called, has compared to traditional floor leveling concrete screed row benefits:

• reduction deadlines installation The Knauf-superfloor system allows you to complete all the work in just a few days and not have to take a technological break for the screed to dry - you can start laying the finished floor covering immediately. However, according to the recommendations of experts, you should not touch the dry screed for several weeks if the thickness of the backfill layer is more than 5 cm, since with such a thickness the backfill material will shrink by approximately 15 mm;
• The main advantage of this system is absence wet work. Laying dry screed can be carried out without fear in a room where the renovation has already been completed;
• sound and heat insulation. Expanded clay backfill prevents noise penetration and heat loss;
• floating floor technology creates base, which is ready for further coating and does not require additional leveling of small differences and irregularities inherent in sand-cement screed. This means it saves both time and money. Since the base, assembled from Knauf-superfloor elements, is smooth and even, any type of flooring can be laid on it, be it linoleum, laminate, tiles, and so on;
• unlike cement-sand screed, dry screed is lightweight and does not load the floors;
• It is possible to lay pipes or wiring directly in the dry screed.

Knauf-superfloor is laid on wooden and concrete floors in rooms with a non-aggressive environment. When laying a waterproofing layer, this system can also be used in showers and bathrooms. This system is especially relevant in conditions of reduced loads on floors or when “wet” work is excluded.

When is the Knauf system relevant?

Such floors have a wide range of possibilities and, in some cases, can be done at low cost. Use dry the screed is convenient:

• to eliminate differences in the floor base over 40 mm. This applies to apartments of old buildings, where a serious difference in elevation is the norm;
• when installing electrical wiring and water supply systems after completion of repairs;
• for limited periods repair work;
• Possibility to install a floating floor low temperatures air;
• when the logs become dilapidated.

Construction of a dry screed

Dry screed installation work Knauf begin with measurements of the covered floor area and its horizontal level. This can be done using building level, making notches on the wall indicating the deviation of the base from the horizon. The notches are then connected using a ruler and thus the required layer of expanded clay backfill is determined. The expanded clay layer should not exceed 100 mm. The required volume of backfill is determined based on 50 kg (1 bag) of backfill to cover 1 m². But this relationship is true in the case when the previous floor covering is completely dismantled.

For installation floating floor you will need:

• Super PVA glue;
• Knauf-superpol elements;
• self-tapping screws for gypsum fiber sheets;
• expanded clay backfill;
• vapor barrier;
• construction tape;
• edge tape or polyurethane foam sealant.

It is more advisable to use edge tape when the wall curvature is up to 2 mm/m.p. If this indicator is higher, it is better to fill the gap between the wall and floor base sealant, the excess of which, after hardening, is removed with a sharp knife.

After cleaning On the base of the floor, a vapor barrier (polyethylene film) is spread from small debris and dust with an overlap of about 200 mm on the walls. On top of this film, using a thick gypsum mortar, beacons are installed at the marked level, for example, aluminum slats for laying plasterboard slabs, with a pitch of 900 mm. When laying elements systems on a wooden supporting base instead polyethylene film corrugated, waxed paper or glassine is used.

The space between the beacons is filled with expanded clay the fraction that is being leveled building rule. When forming a layer over 5 cm, the backfill must be thoroughly compacted.

Process styling Knauf-superfloor elements start from the corner. The edge adjacent to the walls is trimmed. All elements are mounted using the tongue-and-groove type, with the seams coated with glue and then connected with self-tapping screws with a pitch of 100 mm. Experts emphasize that when screwing in the screws, you must be on the sheet that is being screwed.

The first row of elements is carefully levels out at the intended level, since the installation of other parts of the system will depend on this. The regulated gap between the wall and the gypsum fiber sheets - 1 cm - is subsequently filled with polyurethane foam sealant. After all the sheets are mounted, the finished base must be vacuumed.

Nuances

This design of the floor base allows the result to be durable coating capable of supporting the weight of the loaded passenger car. However, in order to avoid unpleasant “surprises” when using the assembled flooring, professionals recommend sticking to a few rules:

• Before installation, the elements of the Knauf-superfloor system must be adapted to the room where they will be installed.
• GVL sheets should be stored on flat surface strictly horizontal.
• The base layer of expanded clay should not deviate too much from the horizontal level.
• when installing a base from Knauf sheets in wet rooms, in addition to the mandatory laying waterproofing tapes along the walls, the surface of the mounted elements is covered with a layer of waterproofing. By the way, the manufacturer Knauf also produces them.
• When finishing coated with a thin elastic material, the base is covered with a layer of no more than 2 mm of self-leveling putty.

As you can see, the process of constructing the Knauf superfloor uncomplicated, saves not only time, but also money, allows you to reduce loads on floors, increase the level of noise and heat protection, and also level the floor covering complex configuration. The only disadvantage of this foundation is its vulnerability to moisture in case the neighbors above flood it. However, for the neighbors below, after installing the Knauf superfloor, additional sound insulation will be a gift.

As a result of reconstructions and repairs of old premises. The acute question arises of what to do with the floor. Floor influences such room parameters as humidity, level of sound insulation, thermal insulation and ambient temperature.

Usually used as subfloors cement screed or wooden flooring.

A major innovation was the Knauf Superfloor technology, from the leading company Knauf. This technology allows you to quickly and efficiently perform rough installation of the subfloor, for the further use of floor coverings such as parquet, laminate and linoleum.

Knauf superfloor is a two-component system consisting of:

1. Made from sheets of glued gypsum fiber with a 5 cm chamfer. Produced by semi-dry pressing in a factory. The sheets are 1-2 cm thick, 120 cm long and 60 cm wide, which reduces their weight and facilitates transportation. The weight of one sheet is about 18 kg. Front side Knauf superfloor element is sanded. It is also important that the load resistance is 20 MPa.
2. From a dry screed, which consists of expanded clay crumbs with granule sizes up to 5 mm. Expanded clay has excellent thermal insulation, fire protection, and soundproofing properties. When using granules bigger size, a characteristic sound will appear as a result of walking.

The main advantages of KNAUF superfloor

Knauf floor also has disadvantages:

• Use of beacons. You cannot leave them under Knauf superfloor slabs; they may cause surface deformation. And during their dismantling, it is difficult to ensure a perfectly flat surface.
• Sheets Knauf superfloor afraid of moisture. Increased requirements for waterproofing. All material must be dry with minimal moisture content.
• Not suitable for offices and industrial premises, where a large dynamic load is used.
• It is necessary to remove the fold from the plates located near the walls, which leads to slight subsidence of the floor.

The Knauf system has the main advantage compared to other methods of leveling floors; it is not a significant cost. Can be used in both industrial and residential areas.

Dry screed is used to eliminate differences over 40-50 mm, which is important for the old foundation. If the layer height exceeds 6 cm, then an additional layer of slabs will be required. The technology can also be used in rooms with any relative humidity level.

Preparatory work

Before laying the Knauf superfloor, it is necessary to carry out preparatory work.

To install the Knauf superfloor with your own hands, we will need:

1. Building level.
2. Industrial or old vacuum cleaner.
3. Primer.
4. Hacksaw, marker, sealant.
5. Waterproofing.
6. Screwdriver.
7. Liquid Nails.
8. Beacons.
9. Self-tapping screws.

To begin with, let's free the surface from various construction waste. We thoroughly clean the entire surface; it is advisable to use a vacuum cleaner for this. We prime the surface of the floor screed.

After the primer has dried, you can begin waterproofing the floor. But first, we set the required level of backfill around the perimeter of the room.

As waterproofing material use vapor barrier film or PVC. The film is laid overlapping each other, and the joint is taped. The waterproofing is also laid on the surface of the wall, up to the level of the intended backfill.

After installing the waterproofing layer, sound insulation is also installed. Usually this is insulation belt type about 100 mm wide, can also be used foam tape.

After this, you can start filling the base itself under the GVL Knauf Superfloor. For this purpose, expanded clay in bags is usually used. But the possibility of using sand is not prohibited different types, screenings or slag with the corresponding fraction of granules.

If the backfill height is over 5-6 cm, the layer must be compacted. To begin with, we will set up the beacons, we place the outer ones from the wall, at a distance of 15 cm, all subsequent guides are parallel to each other at a distance of 1.5 meters.

After this, the prepared material is backfilled bulk material, alignment is carried out using a rule. After final leveling of the surface, it is necessary to remove the beacons.

Excellent sound insulation and heat insulation properties. Minimum load on load-bearing floors. Good for individual houses, apartments The only drawback is the fear of moisture. The choice is yours.