To construct a base for finished floors, the Knauf concern has developed a very interesting technology KNAUF OP 13. Its essence can be described by the term “dry screed”.

Floor subfloors KNAUF OP 13 - general information
KNAUF OP 13 floor bases are hollow-core, easy-to-install dry-assembled structures intended for installation in residential and public buildings, as well as in office and auxiliary premises industrial buildings:
- with non-standardized requirements for sound insulation of floors;
- with requirements for sound insulation of floors according to SNiP 23-03-2003: airborne noise insulation indices (Rw) up to 56 dB and reduced level indices impact noise(Lnw) up to 47 dB;
- in conditions that exclude “wet” processes when carrying out finishing works;
- for leveling the floor surface and (or) raising the floor level, as well as shelter technical networks on floors using the dry method; - if necessary, reduce loads on floors;
- under conditions of tight deadlines and low temperatures (up to +5 ° C) during the period of finishing work.

Knauf OP 13 floor bases can be installed on both concrete and wooden floors. Prefabricated floor bases OP 13 are used in the following premises:
- with a non-aggressive environment, weak and moderate intensity of mechanical impacts according to SNiP 2.03.13-88;
- with dry, normal and wet humidity conditions according to SNiP 02/23/2003;
- no restrictions on structural systems and types, levels of responsibility, degrees of fire resistance and number of storeys of buildings, climatic and engineering-geological conditions of construction.

The use of Knauf OP 13 floor subfloor is also permitted in rooms with high humidity(bathrooms, showers, etc.) subject to waterproofing. The surface of the Knauf OP 13 floor base is suitable for all types floor coverings. It is recommended to install heated floors on the screed surface.
The Knauf OP 13 prefabricated floor base system includes two varieties: OP 131 and OP 135, which differ from each other in the degree of readiness of the screed parts for installation under construction conditions. In OP 131, the screed is assembled from floor elements (EP), and in OP 135 it is assembled under construction conditions from two small-format moisture-resistant gypsum fiber sheets (GVLV)
Let's take a closer look at the Knauf OP 131 system (Knauf-superfloor)

KNAUF-superfloor technology (KNAUF OP 131)

The basis of this technology is floor elements (EP) Knauf-superfloor made of gypsum fiber sheets (GVL) measuring 1500 x 500 x 20 mm. They consist of two 10 mm gypsum fiber sheets glued together with an offset, forming folds (locks). The seams of the floor elements are glued special glue and are fastened together with special screws, after which a layer of ordinary gypsum fiber sheets is laid on top.

Warm floor and KNAUF-superfloor
The thermophysical properties of gypsum fiber sheets make it possible to use them for constructing heated floor subfloors. Recommended as heating elements in the construction of a heated floor made of gypsum fiber boards, the use of plastic or metal-plastic pipes With hot water(coolant).

Device KNAUF systems OP 131 on a concrete base
When preparing a concrete base, it is necessary to clean the surface and seal cement mortar grade M500 detected gaps between slabs, as well as gaps between the floor and walls. After the cracks are sealed, the final “cleaning” of the surface is carried out. If there are minor (up to 5 mm) unevenness on the concrete base in the form of grains of concrete or holes, the floors are leveled using an intermediate layer, for example, corrugated cardboard, fibrous insulating material etc. To fill local unevenness (up to 20 mm), it is recommended to use “repair” mixtures, for example, “Vetonit 4000”. For large unevenness (over 20 mm) or for different levels fine-fraction expanded clay is used for bases. Its layer may be various thicknesses, for example, to raise the floor level, but the main purpose of the bedding is to level the surface. If the floors are insulated polystyrene foam boards, then the surface of the supporting base must be leveled with putty or sand-cement mixture.
After the surface is prepared, the floor is covered with polyethylene film 0.2 mm thick with an overlap of adjacent sheets of at least 200 mm. This ensures good vapor barrier.
Note: For a wooden load-bearing base, instead of film, glassine, waxed or corrugated paper is used, as well as modern universal vapor barrier such as “Yutafol N”, “Svetofol”, etc.
At the wall, the edge of the film should be laid approximately 20 mm above the level of the prefabricated floor. The floor level is either 20 mm of expanded polystyrene or mineral wool, or 30 mm of glass wool or backfill, plus the thickness of two gypsum plasterboard slabs (2 x 10 mm) - they will “cover” the structure. As a result, the floor level rises by 40-50 mm from the base base. (Fig. 1.)

1.


Rice. 1. Construction of the Knauf OP 131 floor made of gypsum fiber boards (GVP):
1. Base; 2. Lags; 3. Rough flooring; 4. Waterproofing; 5. Dry backfill; 6. Floor element Knauf-superfloor; 7. Edge tape.
IMPORTANT!!! To avoid deformation of the floating floor and improve sound insulation characteristics, it is necessary to exclude the possibility of the slabs coming into contact with the wall. To do this, a contour insulating tape 10 mm thick and 10 cm wide, cut from mineral wool(edge ​​tape), or soft polymer-based tape with a thickness of at least 8 mm. The edge tape absorbs noise and serves expansion seam, preventing the slabs from “walking” and cracking. GVL sheets are cut according to the actual dimensions of the room, taking into account the gap on the edge tape.

Backfill insulation
If the insulation is poured, it is simply poured onto the floor and leveled with a lath along the beacons set using a level (for example, rack profiles), starting from the wall opposite the entrance. With a thickness of more than 50 mm and in places adjacent to monolithic floor the backfill needs to be compacted.

Slab insulation
If it is polystyrene foam, mineral wool or glass wool, they are carefully cut into small slabs. When laying, you need to make sure that the slabs fit very tightly against each other. When laying expanded polystyrene, it is necessary to prevent the formation of gaps between the plates.

Laying gypsum fiber sheets (GVL) Knauf
Laying the 1st layer of gypsum fiber Knauf sheets with a gap in the joints of no more than 1 mm, it is carried out from the doors to preserve the backfill surface. When installing the screed on the side opposite the door on the backfill, it is necessary to create a “path” from the sheets for movement.
If used thermal insulation boards, installation should begin from the opposite wall. The displacement of the joints must be at least 200 mm.
Next, the 1st layer of Knauf gypsum fiber sheets (GVL) is carefully covered with an adhesive composition. The glue must be applied sequentially (separately) under each sheet of the 2nd layer, avoiding gaps. The average glue consumption is 400 g/sq.m.
The sheets of the 2nd layer are laid across the 1st layer with a gap of no more than 1 mm so that their plane covers the cross-shaped joints of the first layer. The spacing of the joints should be at least 250 mm (starting from the corner, a quarter of the sheet should be laid on the entire sheet of the 1st layer, and half a sheet from the wall). The glue protruding from the seams can be removed with a spatula.
In addition, each sheet of the 2nd layer (as it is laid) is fastened with special screws for gypsum fiber boards with a length of 19 to 30 mm with a sheet thickness of 10 mm and a length of 23 to 30 mm with a sheet thickness of 12 mm (steps of no more than 300 mm) . Screws must be coated with anti-corrosion coating.
IMPORTANT!!! Screws for regular drywall(GKL) fastening gypsum fiber sheets (GVL) is PROHIBITED. The screw for gypsum plasterboard has a double thread and a device for self-countersinking, which makes it possible to penetrate 12 mm into the sheet in one pass. Very often, under the influence of operational loads, spontaneous unscrewing of the gypsum plasterboard screws that fastened the gypsum plasterboard floor elements occurs.

Installation of KNAUF-superfloor elements

2.

Installation of floor elements is carried out from the wall with the doorway. For floor elements adjacent to walls, the rebate in the mating area is cut off. Each new row begins with a laying cut off in place of the last element of the previous row, which eliminates waste and ensures the displacement of the end joints in adjacent rows (at least 250 mm).
IMPORTANT!!! Joints with cut folds are not allowed/

3.

Before installing the floor elements, Polax, PVA or Systemkleber glue is applied to the folds of the already laid elements mating to it. As the installation proceeds, the folds of adjacent elements are fastened with special screws for gypsum fiber boards with a length of 19 to 30 mm in increments of no more than 300 mm.
The finished floor from KNAUF-superfloor elements is covered on top with small-format gypsum plasterboard measuring 1500 x 1000 (1200) x 10 (12) mm, or gypsum plasterboard sheets of a regular format, which is less convenient.
In all cases, the gaps and places where screws are installed are sealed with Fugenfüller GV or Uniflot putty, after which the edges of the edging tape and polyethylene film protruding above the floor level are removed. Then the 2nd layer of gypsum fiber boards must be primed with any primer for highly absorbent substrates.
IMPORTANT: When installing KNAUF prefabricated floors, damp room(bathroom) where the floor meets the walls, it is necessary to lay a waterproofing tape ("Flechendichtband", "Knauf"), and cover the floor surface with waterproofing ("Flechendicht").

4.

5.

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. At the moment, construction markets offer huge amount 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 habitable apartments, without the risk that moisture will penetrate into the next room, which does not need 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. The weight of the Knauf structure is not very large, therefore, unlike a traditional screed, it does not have a strong impact on the supporting structures.
7. The Knauf smart floor has thermal insulation properties, due to which there is no need to place additional thermal insulation elements on top of it.
8. Even a wooden floor cannot compare with Knauf flooring in its soundproofing properties.
9. Prefabricated floor structures Knauf is 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 floors of 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 due to a number of other advantages.

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! This film not only has 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 thermal insulation and soundproofing 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 a vapor barrier effect. It is necessary to take 20 centimeters more film than is needed for the floor.
• Primer Knauf.
• 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. Placed on the floor vapor barrier film. 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 the edge strip along the walls so that one edge of it 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!

Modern finishing materials have excellent performance and decorative characteristics, but they can only be used on a level surface. Therefore, repair technologies that help solve the problem of unevenness are receiving close attention. Let's talk about interesting new product called Knauf Superfloor and let’s take a closer look at its installation.

A modern floor should be environmentally friendly, durable, “quiet” in use, resistant to temperature changes, perfectly smooth, able to withstand high mechanical loads and have excellent heat and sound insulation properties. Almost all existing finishing materials meet these requirements, but only if they are laid on a high-quality subfloor.

Knauf superfloor- innovative repair technology, ideal for creating a solid foundation.

Features of the new repair technology

What is Knauf Superfloor? This is a prefabricated system that reduces the labor intensity of work and repair time, and also allows you to avoid wet processes and reduce the time for process breaks.

Knauf super floors help reduce the static load on the floor and increase the heat and sound insulation of the floor. They are used to make prefabricated bases, filling floors of complex configurations.

Specifications

Each element of such a floor is a sheet made in a factory. It consists of two small-format moisture-resistant bases connected to each other with an offset of 50 mm.

• The total thickness of the “pie” is 20 mm.
• Dimensions - 1500×500 mm.
• The weight of one element is 18 kg.
• Usable area - 0.75 sq.m.
• The hardness of the material is 20 MPa.
• Tensile strength - 20 MPa.

Such values ​​will help to make a competent calculation of material consumption.

Building finishing material new generation

Knauf super floor is a “pie”, the surface of which is made up of environmentally friendly gypsum fiber sheets. How are they laid? Typically, Knauf superfloor is assembled on top of a dry expanded clay screed, the grain size of which does not exceed 5 mm.

It will help to understand what stages the installation technology consists of step by step instructions– Knauf dry floor screed is well mastered and adapted for independent implementation:

• First, the base of the floor is covered with plastic film if it is concrete, or with roofing felt if it is wooden. An edge strip made of foamed polyethylene is attached to the walls along the entire perimeter. Knauf floor elements should not come into contact with the walls - their installation involves the use of additional protection.
• Next, beacons are placed, forming even cells. Expanded clay is poured into them and leveled with a rule. The entire surface is again covered with plastic film.
• Sheets of material are laid out on it and fastened together with glue, and for greater reliability, also with screws at intervals of 30 cm. That’s the whole installation technology.

Despite its simplicity, laying sheets is not at all primitive. It has many subtleties and little details, the careful observance of which can give a good result. Of course, it is better to entrust floor installation to professionals. But if you take your time, watch the video and thoroughly study the process, you can implement it yourself.

Is it possible to finish screeding the floors in one day and begin laying the finishing coating the next day? Not so long ago, this seemed unrealistic, because a “wet” cement screed requires at least 28 days for final drying. But about 15 years ago, the revolutionary technology of Knauf loose floors appeared, which changed the understanding of this process. One of the names assigned to it for this reason is “superfloor Knauf”.

Today, there is probably no person, one way or another connected with the construction industry, who has not heard about this company, which produces a variety of finishing and building materials, as well as paint and varnish products, system components suspended ceilings, hydro, heat and soundproofing materials, fasteners, various tools.

But most of all, this company is known for its plasterboard technology, perfected to the smallest detail. facing materials, being its ancestor. Founded by the two Knauf brothers in 1932 as a manufacturer of gypsum building mixtures, already in the 50s the company began producing the first plasterboard materials, soon becoming the undisputed leader of this technology. And today we can confidently say that “Knauf” and drywall are two inextricably linked concepts.

The Knauf screed floor method is essentially a long-standing known technology semi-dry or dry prefabricated screed, when the substrate is made of a thin layer of finely dispersed bulk material Sheet panels of the rough coating are installed that are fastened together. The soft and seemingly loose backfill pressed by them becomes strong and hard, capable of withstanding quite large loads.

In the Knauf company method, expanded clay sand of a very fine fraction with a granule size not exceeding the standard 4 mm is used for this. After leveling the backfill according to the “beacon” rule, it is covered with sheets of gypsum fiber material. The backfill thickness should be in the range from 30 to 100 mm.

Gypsum fiber sheets (GVL) differ from plasterboard in the absence of a top paper coating and are a uniform mixture of gypsum and cellulose fibers reinforcing it. Possessing high strength and fire resistance, they are also quite environmentally friendly and chemically safe.

Issued structural elements Knauf superfloor in the form of panels glued together from two GVL sheets with dimensions of 1200 × 600 × 10 mm offset relative to each other to form folds along the perimeter 50 mm wide, along which they are fastened when laid together using adhesive mastic and self-tapping screws. The total thickness of the resulting superfloor coating is 20 mm.

Advantages

1. The main advantage of this technology is the absence of “wet” materials and operations. This is especially valuable not so much in the process of constructing new buildings, but in carrying out repair work in existing ones, since it excludes possible leaks and penetration of moisture and dampness into adjacent rooms.
2. High execution speed installation work. There is no need to use special mechanisms. Laying a Knauf superfloor in a 20 m² room by a team of two people during a working day, along with delivery and unloading work, is quite a common thing.
3. Immediately after installation of the gypsum fiber board panels, the floors are ready to lay the finishing coating and accept work loads.
4. In addition to the speed of installation, Knauf floors are distinguished by high speed and ease of dismantling work in case of disassembly. GVL sheets are removed using a regular jigsaw, then the backfill is collected with a shovel or scoop.
5. The small total thickness of the entire “pie” of dry screed - from 50 mm with a backfill layer thickness of 30 mm - causes a very low loss of height and volume of the room.
6. The total total weight of the floor structure is significantly less than with traditional ways screeds. This significantly reduces the load on the load-bearing elements of the floors and the structure of the entire building.
7. Low thermal conductivity makes it possible to avoid additional layers of thermal insulators for thin finishing coatings such as laminate, linoleum, cork, etc.
8. The high sound insulation properties of Knauf floors are significantly superior to wooden and parquet flooring in this parameter.
9. Excellent fire safety.
10. Possibility of installation at any time of the year.
11. Knauf floors are also highly environmentally friendly and chemically inert.

Main technical characteristics:

• dimensions of panels together with folds 50 mm wide - 1250×650×20 mm;
• area covered by one element - 0.75 m²;
• weight of one panel - no more than 18 kg;
• Brinell hardness - 22 MPa (220 kgf/cm²);
• the compressive strength of expanded clay backfill is at least 10 MPa;
• thermal conductivity - 0.25~0.35 W/(m²×°K);
• sound insulation: 58 dB - from airborne noise and 55 dB - from impact noise;
• fire safety in terms of flammability, flammability, smoke generation and gas toxicity classes - G1, B1, D1, T1;

Flaws

Speaking of disadvantages Knauf technologies, then there are practically none, although many here call this material “hydrophobia”, but leaks and flooding can thoroughly ruin any type of flooring. Even if the consequences of such accidents do not appear immediately, after some time they will certainly make themselves felt in the form of fungus, mold and rot. But the ease of dismantling Knauf floors allows you to replace them with the least labor costs compared to other types of coatings.

Many homeowners and master installers, for reasons of economy, believe that on the upper floors of buildings and structures, laying a moisture-proof film under the base of a dry screed can be neglected. This is a serious mistake, since moisture can enter through the floor slabs from adjacent rooms. In addition, such a film also serves as a vapor barrier, protecting materials from condensation.

Laying method

In the one considered here the simplest technique The structural technology of dry screed, which has the designation “Alpha” in Knauf company terminology, uses a single-layer installation of gypsum fiber board, but there are other options that involve a more complex “pie” using additional layers of polystyrene foam or porous fiber acoustic and heat-insulating materials this company.

Required materials:

Required tools:

• drill, screwdriver;
• jigsaw;
• drywall knife;
• measuring instruments: tape measure, meter, square, level;
• metal profile for installing “beacons”;
• rule for leveling the backfill layer along the beacons.

Step by step guide

1. The surface of the floor slabs under the floor base must be well cleared of debris. Protruding ends of reinforcement, wires, nails, and screws must be carefully cut off and removed. Large irregularities and pieces of crushed stone protruding outward from the concrete should be carefully knocked off with a chisel.
2. On a prepared base vapor barrier film is spread with adjacent sheets overlapping each other by at least 200 mm. Its edges along the perimeter of the room should extend onto the walls above the level of the future floor.
3. Then an edge strip is installed vertically along all walls, designed to compensate for thermal deformations of the Knauf superfloor panels. The compensation gap at the edges is a very important condition for this technology. It allows you to avoid swelling of the floor when the temperature in the room changes.
4. Along the line of the proposed installation metal profiles The lighthouses are covered with a small mound of expanded clay along the length. Beacons are pressed into it from above, adjusted to the level, based on the total backfill thickness of no more than 10 cm. If flooring is replaced in only one room of the house, the level of the future flooring should “come” to the corresponding level in the remaining rooms.
5. In the space between the beacons, an expanded clay layer is filled, which is then leveled with a rule. One of the advantages of Knauf flooring is the ability to backfill and lay the covering not completely in the entire room, but in parts.
6. Then the beacons are removed, and the traces from them are sprinkled with a small amount of expanded clay. To the corner from which the installation of gypsum board sheets will begin, a “path” of several free panels is laid, along which you can move without spoiling the rest of the backfill.
7. The folds of the gypsum fiber board panels adjacent to the walls and partitions must be cut so that their thickness in these places is double. The first row of panels is laid out along one of the walls. Work should begin from the wall of the room opposite the entrance, gradually moving towards front door. Before laying the next row, the folds of the previous one are lubricated with glue or mastic.
8. The sheets of each next row are laid with an offset of at least 250 mm relative to the previous one. The formation of cross-shaped joints is not allowed. Then the glued joints are fastened with screws in increments not exceeding 300 mm.
9. After the floor has been laid in the entire room, everything The joints between the sheets should be filled with gypsum putty. Knauf.
10. Before laying finishing coat, Knauf superfloor must be coated with a deep penetration primer.

To significantly increase the strength of the coating, you can lay a second layer of gypsum fiber board panels by changing the laying direction perpendicular to the sheets of the first layer.

Conclusions

Knauf superfloor technology is perfectly suited for underfloor heating systems that are so popular today. And the tall ones thermal insulation properties loose floors significantly reduce the heat loss of a room through its base, which significantly increases the energy efficiency of any heating systems. We can confidently say that the cost of installing Knauf loose floors with good overall thermal insulation of the house will pay off within 2-3 years due to savings on heating.

When any repair concerns the floor plane, the main question for residents and builders is the question of what to use to level the floor.

Modern market building materials dynamically responds to the problem of flooring and almost every year they offer builders new technologies or mixtures. There are several dozen flooring options on the market now. One of the last effective methods leveling the base floor - KNAUF - superfloor. Important difference This “dry” screed is that it is a whole technology consisting of several building materials and processes.

The advantages of this technology are as follows:

• Can be used on both concrete and wooden base with differences in floor level up to 10 cm.
• Light weight of the finished structure.
• Installation speed. An area of ​​about 50 sq/m is processed within 2 working days and within 24 hours after laying the superfloor you can begin finishing: lay laminate, parquet and tiles, lay linoleum.
• Strength – the superfloor design can withstand a load of 20 to 40 kg per 1 cm/sq., depending on the material of the finishing coating.
• High thermal and sound insulation properties.
• In the space under the super flooring you can lay communications.

So, first things first.

The device of the "Superpol" system

Installation is carried out quite quickly and in several stages. First, you need to carefully remove any debris from the base of the floor and process all detected gaps and cracks between the wall and the ceiling.

On concrete base creeps polyethylene film, For wooden floors Instead of film, special lining paper should be used, and it should be laid overlapping.

It is important to consider that the edges of the film and paper around the entire perimeter should extend 15-20 cm onto the walls.

An edge tape is fixed on top of the film around the perimeter, which compensates for deformation expansion and increases the soundproofing qualities of the new screed. After laying the entire superfloor system, excess film and edge tape are trimmed along the contour.

Next, a backfill based on fine-grained expanded clay is poured onto the film in a layer of at least 20 mm. As a loose mixture, it is a little dusty, so it is better to work with a mask.

In order to level the expanded clay sand, before laying the superfloor sheets, it is necessary to install beacons clearly aligned laser level, and then the backfill is leveled using the trapezoidal rule.

Elements of the “Superpol” system

The elements of the “superfloor” system are gypsum fiber sheet (GVLV), which has high moisture resistance and strength; it is not for nothing that this material is called super sheet. Unlike conventional plasterboard, a different production technology is used here: gypsum dough is pressed with fibers of fluffed waste paper.

For superfloors, the German manufacturer offers two sheet formats: the so-called floor elements (EP), 1200x600x20 in size, and a small-format GVLV sheet. The difference between the sheets is that EPs are made by gluing two moisture-resistant gypsum fiber sheets, resulting in the formation of folds; the total thickness of such an element is 20 mm.

If you decide to use small-format GVLV sheets, they need to be laid in two layers spaced apart, glued together with PVA glue and secured with screws for gypsum fiber sheets.

Main stages of laying supersheets

The laying of floor elements begins from the corner opposite the doorway, and the fold of the first sheet must be cut off to ensure an even fit of the sheet to the wall.

To step over the backfill, moving from window to door, use “islands” made of plasterboard or pieces of gypsum fiber; they allow you to move along the dry backfill without violating the integrity of the even layer. Glue is applied along the fold, thus the elements are fastened together. The place of contact in the fold of the two sheets must be tightened with special screws for gypsum fiber boards.

If you use small-format GVLV sheets, they need to be laid in two layers spaced apart, glued together with PVA glue and also secured with screws for gypsum fiber sheets.

As a result, the surface acquires a perfectly flat plane on which any finishing floor covering can be laid, be it laminate, parquet, tiles, linoleum, etc.

What else is important to know about the Superpol system

With this technology, insulation can be used to improve the thermal insulation of the room. It is also possible to install plastic or metal-plastic heating pipes and plumbing communications under the KNAUF superfloor elements. It is important to note that laying and crimping of communications is carried out before the stage of filling expanded clay.

If you plan to lay linoleum on the floor, the gaps of the slabs and the fastening of screws must be leveled with Fugen GV putty. Other finishing floor coverings do not require this treatment.

In rooms with high humidity, when laying on the floor is expected ceramic tiles or porcelain tiles, you need to protect the sheets from moisture. It is recommended to apply Flachenticht waterproofing before covering.

In general, we can add that the superfloor system helps to level the base, provide an even and high-quality floor in the apartment, reducing time costs significantly, especially compared to cement screeds. This German technology significantly simplifies flooring in rooms with complex configurations.

Video

You can learn more about this system by watching the video.