
2023 Author: Philip Bishop | [email protected]. Last modified: 2023-08-25 07:54
- The essence of the work
- Advantages and disadvantages
- The cost
- Application area
- Materials used
- Training
- Installation work
- Laying sheets
- Final work
Installation of a dry screed is carried out in the case when in the shortest possible time there is a need to make not only an even coating for the floor material, but also to give it excellent heat and sound insulation qualities. The popularity of this type of flooring device is growing every day due to its numerous positive features. All types of floor work for dry screed can be done independently. The most important thing is to know the technology itself and some of the subtleties that you will have to face. At the same time, the material itself for a dry screed can be completely different. Everything will depend on the preferences and technical characteristics of the future floor.
The essence of the work
Work on a dry floor screed is a process that includes a preparatory stage, where the base is leveled directly under the future floor, backfilled with dry mix, and sheet materials are laid. This is the so-called prefabricated floor leveling process.
The technology is significantly different from the "wet" version. It can be applied not only in new buildings, but even in old apartments during renovations. Temperature indicators are not important here, but the main thing is the desire to work and complete all the stages sequentially.

As for the number of sheets used on top of the backfill, then it will depend on the requirements for the future floor, its use, as well as on the layer of dry mix, which will vary depending on the need for careful leveling of the base. As a basis for the future floor, there can be a floor slab, wooden floors, logs and much more. You can, of course, consider alternative options, the most important thing is that the installation of a dry knauf screed has more positive qualities than disadvantages.
Advantages and disadvantages
Has a dry screed knauf pros and cons that show all its sides. Due to these features, the choice of a specific version of the flooring device in the room occurs. Among the advantages are the following points:
- Less effort and time spent in the installation process. In addition, there is no need to wait for the base to dry, but you can immediately proceed to the flooring, which you can choose absolutely any material.
- The best sound, heat, noise insulation qualities of the floor.
- The ability to hide all existing communications, electrical wires in absolutely any room. It is enough to place them in special corrugations or pipes made of polymer materials.
- Independent execution of work without the involvement of specialists.
- Knauf flooring elements are laid under any temperature conditions, at any time of the year. The main thing is that the humidity level is appropriate. The material itself is very picky about this indicator.
Despite the fact that, in fact, the base of the floor becomes very light, the finished version of the floor is able to withstand not only constant adventures, but also bulky furniture and household appliances. The main thing is to choose the right floor covering. Installation of a dry floor screed has a wide range of applications, which allows it to replace the usual "cement-sand" options that cannot withstand negative temperatures.
There are many advantages of such material, but it is worth paying attention to the disadvantages of a dry knauf floor screed. The most important of them is that it does not tolerate high humidity. If water gets under the floor, it will not only have to be dried for a long time, but most likely it will also have to be repaired by dismantling the slabs and flooring. Fortunately, the costs are minimal. But even this can be avoided if the technology of the work is observed, as well as the sequence of actions. Many disadvantages arise due to the inexperience of the master, haste and the use of low-quality material under a dry floor. A dry screed has disadvantages to a greater extent due to the fact that it raises the floor level. This is especially true in rooms with low ceiling heights.
The cost
Some before starting work want to get an answer on how much a dry screed costs. Everything will depend on the material used, what thickness of backfill is used for the dry screed.
The best purchase option is to purchase prefabricated kits. This includes everything you need and of high quality. But in order to save money, it is better to go to the store on your own and buy it on your own.
When receiving information about how much a dry knauf floor screed costs, it is important to consider not only the material, but also the components, which include films, screws, glue, etc. A gypsum board will cost about 250-300 rubles for each m2, plastic wrap - 20-35 rubles, packing of self-tapping screws - 140-160 rubles. Wholesale prices will be much lower than retail prices. This should be taken into account and made purchases in batches, everything that is required for the repair.
Application area
The use of a dry screed is aimed at leveling the floor before installation work, as well as, if necessary, reinforcing the wooden floor. The same applies to rooms if there are laid pipes of various systems, electrical wires. Since all types of work are carried out as soon as possible, this option is perfect for new buildings or, if you wish, to quickly move into the purchased apartment. This also applies to temperature conditions outside the window.
For specific areas, it is not recommended in bathrooms and kitchens where there is a high likelihood of flooding or water leaks. This negatively affects the material itself.
Materials used
Before installing the dry floor, prepare the required materials. This includes everything for thermal insulation and waterproofing, directly dry backfill,

which is available on the market in variants, fasteners, glue, sheet material. It is the latter that special attention is paid to.
Gvl can be laid on the floor, plasterboard, plywood, OSB, sheets of asbestos and cement can be used. First of all, one should proceed from the technical parameters of the material itself and the final requirement for the floor. During their production, crumb of foundation gypsum or other product is pressed together with cellulose (paper or cardboard). In order for the sheets to have high strength, they are reinforced with a hydrophobic composition. The front side is sanded so that the subfloor surface is smooth and ideal for subsequent flooring.

Floor leveling boards have different thicknesses, which affects the overall height of the dry screed. If the sheets of GVL are 10-20 mm, then plywood is somewhat thinner. And there are plenty of options for each of them. With the help of gvl it is very easy to level the floor. Sheets can be standard or have the ability to resist moisture. In addition, they have properties such as fire resistance, environmental friendliness, sound insulation property.
It is important to choose the right gvl for a dry screed. The quality of the product itself will also depend on the manufacturer. This primarily refers to the flatness of the surface. It looks like each sheet will be the same, and have perfect evenness over the entire plane. But when it fits on the backfill, errors and misalignments are visible. Here, not only low-quality manufacturing, but also storage in warehouses in stores can influence.
Training
Before installing the dry screed, you should prepare the base. Nothing special from the performer is required here. It is only necessary to thoroughly clean the "foundation" of the future floor and seal, if possible, existing cracks and holes.
Installation of a dry floor screed knauf can be carried out on a soil surface. The main thing here is to protect passing pipes, wiring, cables. The best option is boxing.

In addition, the horizontal floor is determined, along which all components are laid. It is best to use a laser level or hydro level as a tool. It is best to make such a reference point for all rooms where the floor screed is carried out. The above tools will help here.

In order not to face the disadvantages of Knauf dry screed, it is best to use the services of professionals. They will perform a turnkey dry screed, and the customer will only have to accept the work. But even here it is best to study the technology for carrying out all stages of work, to monitor the implementation.
We must not forget about the layer of moisture insulation, sound insulation and the installation of beacons. A dry screed using Knauf technology involves laying a plastic film on the base that has been prepared. Glassine is an alternative. You can even take pieces of such material, but then you will have to overlap equal to 150-200 mm. It should go on the walls by about 50-70 mm. Subsequently, all protruding parts of the film can be cut off or hidden under the skirting board. In no case should this layer be bypassed, since at the slightest appearance of moisture, it will have a negative effect on the backfill, damaging it.

The left gap between the wall and the dry floor is filled with mineral wool or soundproofing tape. Even if the material of the finished floor is bent, it does not deform.
For horizontal leveling of the dry mix used as backfill, beacons are set. You can take profiles that are fixed on the base. With their sharp part, they turn upwards, which practically excludes their contact with sheets of gypsum fiber board.
Installation work
When all types of preparatory activities have come to an end, you can begin the installation process. To begin with, you should take care of the choice of backfill, which must be uniform.

The most common option is expanded clay. True, not everyone knows which expanded clay to choose for a dry floor screed. Most importantly, the fraction was at most 5 mm. You can even fill in fine expanded clay for a dry screed. If necessary, compaction can be carried out minimally. Alternatively for expanded clay:
- Quartz sand.
- Fine-grained slag.
- Perlite sand, etc.
The thickness of the dry screed will depend on the unevenness of the floor. For dry screed, the minimum thickness is 20 mm.

This should also include the concealment of all communications available in the room. If the layer of dry screed reaches 60 mm or more, then you will have to lay the sheet material in two layers. Reliability remains in the first place here. At the same time, the dry screed has a maximum thickness of 120 mm.
Expanded clay for dry screed is scattered in the room initially on such an area that you can put several sheets of gypsum fiber board. Otherwise, it will be inconvenient to move around, and the excess amount will make it difficult to attach the sheets to each other. Even these subtleties will help you get an answer on how to make a dry floor screed with your own hands.
Laying sheets
The upper part of the dry screed is sheet material. Most often they are chosen from gypsum fiber. They have better reliability and quality than drywall. In addition, the latter is used most often for walls and partitions, and not for walking on it. In order for the sheets to be well connected to each other, they have a folded edge.

Laying of sheets is most often carried out from the entrance to the room. Gvl floor leveling is quick and very easy. The main thing is that the knauf technology and the stages of all actions are followed for a dry screed. You can walk on top of the embankment to carry out the flooring with sheets, but for this you will need to put a gypsum fiber board, the size of which is at least 50 * 50 cm. The main thing is to move the sheet itself along expanded clay under a dry screed. The next sheet is laid in length, and the joints between them are coated with glue, and then twisted with self-tapping screws. The frequency of screwing in self-tapping screws is 5 cm. Each joint must be rolled.
When carrying out installation work, it is important to know how to make a dry screed with your own hands. Any mistake in the future will lead to deformation of the floor and dismantling work. So the sheets of gypsum fiber board should go in a runaway, in the same way as brick laying or a laminate is made. The number of sheets in length is important here, as well as the size of the trim.

To reduce the amount of waste sheets placed on top of the dry expanded clay screed, the second row begins to fit from the remains after the first row. And the difference itself is obtained in the required value.
It is not particularly worth getting hung up on which expanded clay is better for a dry floor screed. The main thing is that there is a corresponding faction. It is important to ensure that in the process of fixing the sheets and gluing them with glue at the joints, there are no crumbs of backfill. You can sweep it off with a paint brush. Only in this case, reliability will always come first.
Looking at the final result and a perfectly flat floor surface, we get the answer to the question of how to properly make a dry floor screed. After completing the sequence of all actions, the desired result is obtained. The thickness of the dry floor screed will also depend on the number of sheets.
Final work
When the gvl floors are completed, you can proceed to the final stage. Using a clerical knife, the protruding part of the insulator is cut off. There are more steps that should be performed in order to get an answer on how to make a dry floor screed. These will depend on the flooring used.
- The device of a dry screed knauf in the kitchen is carried out with an additional layer of waterproofing. Not only a film is suitable here, but also a bituminous coating.
- All caps of self-tapping screws are covered with putty when linoleum, self-leveling floor or the like is laid on top of GVL sheets.
Superfloor dry screed is performed as quickly as possible due to the technology itself. Everything about everything will be spent 1-2 days. For the glue to dry completely, and the material itself to lie down, one day is enough. A turnkey dry floor screed is performed in the same way.

You can carry out all types of installation work on the device of a dry floor yourself. At the same time, money is saved on attracting specialists, and you will do everything for yourself. The main thing here is to follow all the conditions and advice from professionals who certainly know how to make a dry floor screed. It is necessary to adhere not only to the minimum layer of dry screed, but also to the number of layers of GVL sheets. The sheets themselves should be tightly fixed to each other, fastened with self-tapping screws, so that over time no drawbacks appear for a dry floor screed. Nevertheless, the positive features far outweigh the possible disadvantages in the work.
Gvl dry floor screed requires minimal effort, but at the same time a really flat surface is obtained, suitable for any floor covering.

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