How to cut a screed under a warm floor. How to make preparation under a warm floor in a wooden house

The thickness of the screed of an electric warm floor

According to the technology of screed under the warm floor, most often you have to fill the concrete solution over the heating elements. This is necessary not only to create a flat surface under the flooring of the flooring, but also to protect all components. At the same time, the thickness of the fill layer will differ in different situations. Even the manufacturers themselves in their instructions for the installation of screed under the warm floor of an electric one bypass this issue. It is with the thickness that you should decide in the process of laying the components.

The usual screed is characterized by the following functions that it performs:

    Protection against external mechanical exposure to heating elements and other components of the warm floor.

But it should not only fulfill the tasks set for it, but also meet certain requirements, among which the duration of the operational period is distinguished, which depends on the quality of the filling and preparing the solution, as well as the ability to withstand constant temperature differences. With all this, she should not negatively affect heating cables or other elements of a warm electric floor.

All recommendations from manufacturers for pouring the screed should be withstanded at each stage, not forgetting about the optimal thickness of the warm floor screed. During the device of a warm screed, the nuance should be taken into account that such pouring will be more susceptible to temperature expansion. Therefore, it will be necessary to create all the conditions for the ability to withstand all obstacles.

During the work on pouring a solution for screeding a warm electric floor, you should adhere to certain recommendations that will not only qualitatively lay a warm floor under the screed, but also choose the minimum thickness of the screed.

Much will depend on the power of the heating elements of the heating system in the room. Than it will be larger than thicker you will have to create a layer of filling with a solution:

  • 80-120 W/m 2-layer of screed will be up to 20 mm.
  • 100-140 W/m 2-30-50 mm.
  • 160-200 W/m 2-60-100 mm.

Когда выполняется электрический теплый пол толщина стяжки должна соблюдаться в зависимости от конкретных условий исполнения и параметров помещения.

But at the same time, attention is drawn to the fact that the time will depend on the thickness of the fill layer during which the base of the floor will be completely warmed up. So it is not always very profitable to create a thick layer from a prepared solution. In this case, a large amount of electricity will be spent on the heating of the premises.

Before filling the electric warm floor, it is necessary to check the correctness of the installation of heating elements several times, as well as the wiring and connection of all components. Subsequently, to eliminate the malfunction, you will have to dismantle the screed. All wiring and electrical appliances must be insulated. It also applies to a temperature sensor placed in a corrugated pipe.

If you properly place a temperature sensor, then when it fails it, you will not have to break the screed to extract. It will simply be taken out of a corrugated pipe and replaced with a similar. It is worth noting that the thermostat cannot be installed in the room where there is a constantly high level of humidity.

Cable floor can be poured with adhesive solution. But this is provided only if tiles or porcelain tiles are used as a flooring.

Functions of screed

The concrete screed under the warm floor performs a certain list of functions, among which the main ones can be called the following:

    , as well as a possible elimination of defects. Any changes in the height of the base will be eliminated, and at the same time the load will be distributed evenly. The leveling layer most often acts with a black option for a warm floor.

  • Creates a protective layer for heating elements of a warm floor. They will not be terrible external mechanical influences, that is, the preservation of heat and not passing it into the base from heating elements.
  • Creation of a flat and smooth surface for the subsequent flooring of the selected floor covering version.
  • Uniform transmission of heat from a warm floor system into the air heating room.

With independent concrete filling of a warm floor, it should be remembered that air cavities should be avoided inside. This will not allow the basis to receive the same temperature level in the process of the system. The effectiveness of electrical heating will not be as necessary.

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Preparatory work

Prior to the installation of heating elements of the warm floor, several very important actions should be performed sequentially:

  • Determination of the place where the thermostat is located. It is attached like a conventional switch. The most optimal distance from the floor is 30 cm. Below it makes no sense to install it. In addition to the fact that a hole for the thermostat is drilled in the wall, the hole is also perpendicular to the base of the floor, where the power wire and other wires in the corrugation are also made from it.
  • Preparation of the base of the floor. All garbage and dust are removed, thoroughly aligning the surface is carried out. There should not be any pits and differences. When aligning, the thickness of the screed under the warm floor of the electric one is at least 30 mm. Otherwise, the screed will begin to crack. A layer of primer is applied to the distribution of the solution on the surface. In addition, the areas where furniture will be located are marked, and indentation from walls to heating elements, which should be at least 50 mm, are also noted.
  • A layer of isolation. It allows you to reduce heat loss by about 30%. Laying insulation can be performed not only vertically, but also horizontally. For vertical isolation, a damping tape is used, as well as polystyrene sheets, the width of which is 15-20 cm. Heat loss will be reduced through the outer walls in the room. As for the horizontal distribution, here it fits on the prepared concrete base. The thickness of the sheets is usually at least 20 mm.

In the presence of a room with an increased level of humidity, a waterproofing layer is additionally arranged.

Preparatory stage

All pipes of the warm floor before filling are required to protect against the possibility of damage, since during operation you will walk on it and move the solution.

Before the start of filling, it is advisable for you to create for yourself a scheme of laid pipelines. It is necessary so that in the future, if necessary, you do not accidentally damage the pipeline in the floor. If you know that you will have to mount something in the floor, then make mortgages for the subsequent installation in them.

Creation of temperature seams when pouring a warm floor

Creating such seams is required only in the final screed and in large areas (more than 40 m²). Seams are required to protect against cracking when exposure to heat. The black screed does not require this, it is insulated from pipes with insulation.

You will ask a logical question: “How to make a temperature seam?”For this, we have prepared the image below:

Warm floors pipe pierce material for the seam. This material is a damper tape, which was laid around the perimeter. At the points of the entrance, the pipes are raised to the corrugation. We also schematically present you the arrangement of the temperature seam:

Difficulties with laying communications when laying a heating system warm floor

In addition to laying all the necessary communications for heating the floor, you will also need to fill the floor with concrete, create a concrete screed, and this takes a lot of time. But there are other ways of laying pipes for a warm floor, when the channels are stroked for pipes in the concrete field, and then they are poured with concrete. This approach has its pros and cons, and you need to understand the technology of installing such an economically profitable heating system as warm floors.

Experts unanimously claim that you should not post the floor for laying pipes for the heating system is too difficult and there will be a large number of problems. It is much easier to lay all the pipes for the heating system and then pour a concrete screed, it is so easier and cheaper. But the repair work in the apartment is not always associated with simple actions, sometimes there are tangible difficulties that need to be able to cope with.

The subtleties of the stroke of the screed under the warm floor

Thus, one hundred percent can be approved that the stroke of the concrete screed for laying pipes for the heating system is a difficult matter and specialists are not recommended for this approach. But if there is no other option, then this can be done using advanced technologies and materials.

Choosing a heating zone

Heat transfer in the room should be the same over the entire surface. Otherwise, you can encounter overheating of the heating element and its failure. Then you will have to make not only the repair of a separate section, and sometimes the entire warm floor. To avoid this, the cable is placed in a concrete screed that has an identical composition over the entire area and the same distance from the upper part of the pouring to the cable wall. You should forget about light heat.insulating materials, like sawdust or expanded clay.

Much will depend on the chosen option of flooring, its degree of heat.insulating qualities. After all, heat is originally transmitted precisely with tiles or laminate, and after the air is heated after. On the surface of the floor, subsequently after the installation of a warm floor of the electric in the screed, cumbersome furniture, carpets and other objects should not be located that will create obstacles for uniform transfer of heat. If the furniture has legs, then their height should be at least 15 cm.

Previously, during the creation of a warm floor scheme on paper, all described points should be provided for. If there are such items, areas are determined in advance where the heating cable will be absent. The laying of the cable of the warm floor in the screed should be carried out in the place that will be guaranteed openly.

Cable for warm floor

Each cable version has its own power and length. If you cut off a smaller piece of cable, then it immediately decreases the resistance required for voltage 220 V. This will all lead to overheating and damage.

There are some recommendations, thanks to which you can qualitatively choose the option of heating cable. Much depends on the specific power of the products, which includes the amount of watts necessary for each meter of square area of ​​the room.

In the presence of such flooring as laminate, parquet or cork, the minimum specific power should be 80 W/m 2. Tiles or porcelain tile has large indicators. at least 100 W per square meter. There may be cases of using a warm floor system as the main heating system. In this case, the “cold” rooms should have a specific power of 200 W per m.sq., And thermal insulated rooms. 150 W/m 2.

The length of the cable will be determined depending on which area in the room will be covered with it. The step of production of the heating element will play not a little value. Since in the store for implementation there are cables of standard length, it is best to focus on them. When calculating, everything is done as follows:

When the room has an area of ​​15 m 2 and requires 1 kW of the specific power of the cable, the standard length of 80 meters is purchased on sale and calculation is made: 15/80 and we get 0.1875 meters. optimal styling step. The standard cable must remain unchanged in its parameters. It is better to reduce or increase the styling step than in the future not to get the necessary efficiency from the heating system.

The cable can also be one.cereal or two.core. In one situation or another, there are features and subtleties. One.core cable should connect to the network with both ends. That is, it goes throughout the heated area in the room, after which it returns back.

It is better and easier to lay a two.core cable, where you need to connect only a “cold” end to the network.

Laying a water floor on polystyrene plates

One of the options for replacing the screed are polystyrene slabs. Produced in the form of mats with a thickness of 30 mm, 0.3 m wide, 1.0 m long with protrusions in the form of bobs or grooves, between which the pipes are laid.

Installation of pipes on polystyrene mats provides:

  • Check the degree of difference in height at the base of the floor. The indicator should not exceed 2 mm for every 2 m 2. If the values ​​are exceeded, it is necessary to perform a screed with a thickness of up to 1 cm with a self.leveling mixture;
  • Cleaning the surface of the black floor from debris and dust;
  • Conducting waterproofing work. a plastic film with a thickness of 0.2 mm laid on a black floor with a climbing wall. Connecting seams are sealed with construction tape;
  • Fastening along the perimeter of the walls with a construction stapler or glue of the damping tape. reimburses the expansion of the screed under the influence of the difference in temperature and humidity;
  • Laying mats close to the walls;
  • Clamping plates fixation;
  • Pipe marking. In this case, several rules must be followed: for two adjacent rooms, regardless of their area, there must be independent contours; The maximum area that one circuit can cover is 40 m 2; The width between parallel pipes should be 20-30 cm;
  • Laying pipes between bosses in accordance with the compiled scheme:

For information: When using polystyrene without bobes, some masters lay metal plates under pipes. This is the option when “you can’t spoil the porridge with oil”.

  • Checking the tightness of pipes and thermal properties of the floor during the day;
  • Laying on the pipes of foamed polystyrene or polyethylene film. For better waterproofing, the film is spread overlapping, with a climbing. Joints are glued with tape;
  • Laying two layers of GVL, each 10 mm thick. At the second layer, the joints should not coincide with the connecting seams of the first layer. Between themselves, sheets of gypsum.accommodation plates are fastened with screws, while the film cannot be allowed to damage, on which they lie.
  • Putting joints under linoleum and laminate (this operation is not performed under the tile).

Laying heating pipes on wooden structures

Wooden systems are used mainly in houses where the draft false floor is laid. Can be modular and rack. Modules can be bought in construction stores and assemble houses according to the instructions attached to the kit. The rack system can be made independently from a wood-cutting plate or wood-fiber plate 20 mm thick. The technology includes the following works:

  • Clawed with plastic wrap with a plastic wrap. The seams are sealed with tape;
  • The track is drawn with chalk, along which pipes will pass;
  • Reiki are laid across the lag and fixed with self.tapping screws. In places of rotation of pipes, they are rounded;
  • The reference metal plates are laid on the rails, which simultaneously serve as heat distributors. heated, they remove heat from the pipes and give it to the floor more evenly. The plates are attached to the rails with self.tapping screws;
  • Pipes are laid (they do not need to fix them);
  • The entire system is closed with foamed polystyrene or plastic wrap.

The final work is carried out according to the same algorithm as when laying pipes on polystyrene plates from polystyrene stoves.

What can be a screed?

Pipes with water or other coolant used to equip heating are hidden inside the floor structure. Water warm floor is assembled like a pie, from several layers, among which there is a screed designed to protect the highway from mechanical damage and provide uniform heating of the entire surface.

Types for the application method

Depending on the consistency of the substance used for the arrangement, a wet, dry and semi.dry screed is distinguished. The first option is made of available materials. most often it is sand and cement. over, it can be tried to implement it yourself. you will need to practice a little and make an effort.

The peculiarity lies in the correct preparation of the mixture and its uniform distribution. The consistency will be liquid, which facilitates the application and leveling.

The wet version of the screed is ideally suited for marble, ceramic or other decorative coating. The layer conducts heat well and transfers to natural stone, which gives it to the room as much as possible, ensuring heating

The dry method is quite easy to install and can be implemented on its own. All components can be bought. manufacturers offer dry backfill of composite materials and finished gypsum plates. The filler has to be placed over the entire surface and covered with GVL on top, which is fixed with self.tapping screws.

To perform the third type of screed, you will need additional equipment. We are talking about pneumonagneter and other automatic devices. In order to evenly distribute the semi.dry mixture, you need the experience of performing such work.

Equipment can be rented. construction organizations present it for rent. True, it will be difficult to cope with work without skills. The mixture is better to buy ready.made. independent manufacture will be difficult due to the inaccessibility of individual components. And the right recipe manufacturers are in no hurry to share.

The backfill is compacted tightly, filling all the voids as much as possible. On top is covered with a gypsum fiber leaf. True, the dry option is afraid of moisture

Wooden modules are attached to the base, and metal plates are inserted into special recesses. grooves. Then the trunk is placed there. This is a dry way, which is difficult to call a screed

The semi.dry mixture is difficult to mix and distribute on the surface. It is advisable to order it already finished, and the feed is made by the pneumonagneter

For laying a liquid solution, dexterity is required. But if there is a desire, then you can learn. In extreme cases, a finish coating can be applied over a slightly uneven screed, which itself knows how to align


The choice of arrangement option depends on the features of the premises, skills and budget. In any case, having decided to make the floors warm, you cannot save on quality. Even the best material can ruin crooked hands.

over, the system has been done for not one decade. spending is justified and pay off in the coming years. If you invite cheap shabashniks and not control each process performed by them, you can ultimately pay a double price.

The difference in manufacturing

Various mixtures and materials can be used to perform screeds. The solution can be prepared independently, buy a dry mixture and knead it using the manufacturer’s recommendations, or order the finished material that will be brought at the specified time.

  • concrete. it can be ordered or done;
  • a solution of sand, cement and additional additives to improve the properties of the future coating;
  • Ready mixture of cement with mineral fillers of the Ceresit CN 85 type and others.

When choosing ready.made materials for the installation of screeds, you should carefully ensure that they are designed for warm floors and strictly follow the recommendations of manufacturers.

The requirements should be maintained regarding the thickness of the coating. as a rule, this indicator should not exceed 10 mm. Such a mixture dries quickly, but it cannot be used in wet rooms and outside the building

For the installation of screed on top of floor heating in the bathroom, concrete or sand-cement composition made in the corresponding proportions is more suitable. over, its recipe can be improved by creating a more plastic mixture that is as suitable for arranging a floating screed.

To do this, you have to buy a special liquid. a plasticizer for concrete. This substance is added in the proportions indicated by the manufacturer on the label. It allows you to get a plastic solution resistant to damage after drying.

You will also need a polypropylene fiber. this is a filler used to reinforce the mixture. With its help, it is possible to create a composition that is as resistant to cracking.

To prepare the solution, it is better to take the cement of the brand M300, or M400. In extreme cases, M200 is suitable, but not less. Sand should be chosen clean, not containing large fractions

It is important to remember that any mixture, except dry, should be used immediately. Its storage is unacceptable. the process of hardening will begin. And this can happen after 2-4 hours, if another is not indicated in the recommendations of the manufacturer.

Features of choosing a layer thickness

One of the key points is to choose the thickness of the screed for arranging a water warm floor. There is a bad meaning here, and vice versa and vice versa. In the first case, the coating will quickly start cracks over the entire surface and simply fail. And uniform heating will not work.

Too thin layer will not allow the heat to evenly be distributed, so it should be at least 30 mm. If the heat passes through a rather thick layer of concrete, its exit to the surface will have to wait long

Semi-dry floor screed. Do it yourself.

Arrangement of wet type screed

On your own, you can make a screed of sand-cement mortar. It is easy to cook it at home. over, the purchase of additional inclusions will improve the strength and plastic characteristics of the mixture, making it similar to concrete.

The recipe for preparing wet working mass is simple: you need to take 3 parts of the sand, add 1 share of cement to it. To improve the properties that contribute to the better distribution of the mixture, you need to pour the plasticizer, and for reinforcement, you need to introduce fibrous fiber.

Sand should be bought sifted, and the cement of the brand M400 or M300. Such components allow you to get a quality mixture

Plasticizer buy the one intended for concrete. It should be added based on the recommendations given by the manufacturer on the packaging

Fiber is better to take polypropylene. It will need 0.9-1 kg per 1 m3 of solution. When added, this component is neatly mixed with dry components, providing uniform distribution in the mixture

In the finished working mass, all components must be qualitatively distributed. When using the reinforcing mesh of the fiber to the solution, they are not added, limited to plasticizer and water

Before preparing the composition, it is necessary to decide how many layers to screed. in two or one? The volume of the mixture that will need to be prepared will depend on this.

First you can pour the pipe laid on a layer of insulation, receiving the surface on the output of the surface with their placement. The second layer that will be above them will have to be done after the first. Or immediately form a layer of the desired height. For a master-teacher, it’s easier and more convenient for the second option.

To complete it, you will need to mark the height of the future layer in the room. Here you need to use the laser level and metal guides called beacons.

It is necessary to drill holes for the installation of a dowel-gvo along the flat line-the installation site of the lighthouse

The dowel with a diameter of 8 mm is more densely held in concrete than 6 mm. We pre.put on the puck to ensure tight pressing to the foam. We drive plastic dowels along the entire length of the room

Using a laser level, we mark the height of the future screed. it is to such a depth that the nails have to be scored. It is important to consider the thickness of the lighthouse when installing it on the dowel, so as not to make a mistake with the height

It remains to hoist the metal rail to prepared mounts and check the correct installation using laser marking. the fishing line for the trimmer should be perfectly flat

It is time for fixation. we apply a solution without passes along the line of the rail of the future lighthouse, trying not to damage the pipe contour

In order not to bend the rail, with smooth directional movements, plunge it into the solution. Should be performed confidently and softly along the entire length of the lighthouse

To leve a solution under the rail. To do this, to the places where the gaps are observed between the surface and the lighthouse, you need to add a mixture and thoroughly level it. Excess solution should be removed under a small slope

Further work can be continued in a day when the mixture grabs and firmly records the placed lighthouse

Option with beacons is the most faithful assistant in obtaining the correct surface of the screed. over, the damper tape at this stage should already be glued around the perimeter and in all places where it is required to make a deformation seam. Without it, even the best styling technology will not justify itself. the surface will be covered with cracks.

A day after the installation of lighthouses when using a wet solution, you can continue to work. The mixture is poured into the pipes.

First, the solution is applied from the angle most remote from the entrance to the room. You need to do this gradually, working with a small area

To smooth out the surface, you can use a long construction rail. the rule. The excess solution should be tightened with a wide side of the device, and the acute is designed to remove surplus when plaster walls

In places where there is not enough volume, you can safely add a little solution, evenly distributing over all irregularities

It remains to once again pull the processed section with the rule, focusing on the level specified by the established rail of the lighthouse. Previously, the device should be cleaned of excess solution

Similarly, all sections of the room have to be poured, gradually moving to the exit. It is important to have time to do the work until the mixture has lost its properties. We are waiting for the complete hardening of the layer layer. This will take at least 28 days if the other is not indicated in the instructions.

If a mixture purchased from one of the manufacturers was used and designed to cover pipes of a warm floor, then the waiting time may differ. Here you have to adhere to the recommendations of a particular manufacturer whose brand of solution was used.

All the influxes and spray of the sand-cement mixture from the walls will have to be cut off. To do this, you can take a spatula

The rule of the rule remove irregularities from the surface of a dried screed. You need to go in various directions around the room, evenly pressing the rail to the surface

It’s time to remove the resulting garbage formed as a result of alignment. You can use a vacuum cleaner for these purposes or by a simple broom

It remains the rule to check the smoothness of the surface. It’s good if the gap does not exceed 4 mm, otherwise the work is not done in the best way

The surface is ready for laying tiles. But linoleum or laminate will need a grind. To do this, water the screed with water, take the paintings and thoroughly grind it. The procedure allows you to get perfect evenness at the exit.

This result can please every newcomer who first performs a screed. Here a self.leveling mixture will come to the rescue, which is designed to remove all differences. It is used as spelled out in the manufacturer’s recommendations.

After application, it remains to wait for its drying and you will not have to do any grout. as a result, an even and smooth surface, ready for decorative decoration.

Water warm floor screed thickness

When constructing water heating of the floors, the correct calculation of the thickness of the layered concrete is of great importance is of great importance. In the presence of a thin layer, energy consumption is significantly reduced, but the heating will not be uniform, which will lead to the failure of the entire system.

If the waterflower water layer is large in the water floor, then the efficiency of the entire system decreases, fuel costs increase, but the surface will warm up even more.

Note! When using tiles as a finish coating, the thickness of the concrete screed can be 5 or more, since the plates have high thermal conductivity. When laying a laminate that is a poor heat conductor, the depth of the layer is a small.


There are no strict standards that the minimum thickness of the screed should be. Even a small concrete surface is able to fully perform its functions. giving the strength of the structure and ensuring uniform heating.

According to state norms, the permissible thickness:

  • 20 mm. but this is only when constructing a screed from a finished self.leveling mixture, with a pipe size of 16 mm, and tiles, as a finish coating that is fixed on a layer of tile glue. If you replace, although there would be one element from this list, this will lead to the destruction of the floor.
  • 40 mm-poured without reinforcement with a cement-concrete solution, when laying the contour of the minimum size, and only in the presence of a flat surface. Any irregularities or the use of pipes of larger diameter lead to an increase in the thickness of the solution.

For example: a flood concrete layer of 7. 8 cm is required when using a circuit that has a size of 25 mm, and with a bias of the base by 1 cm.

Pouring a concrete solution in a thin layer is not suitable for premises of the production type, and for rooms with increased load. And above heating wiring, the size of the concrete laying should be 30. 40 mm. When choosing the thickness of the screed, it is possible not only to save money, but also to maintain the height of the ceilings.

The thin layer is easy to damage, since with rapid heating and sharp cooling, a “spider” forms. And the exposure to the surface caused by the periodic movement of the furniture provokes its destruction.

When using a dry screed, a permissible minimum layer of filling is 40. 45 mm.

Note! According to SNiP, the height of the concrete solution should be such that it completely closes the pipes.


The maximum thickness of the screed is not indicated in regulatory documents and is calculated by calculation. You can determine the largest value for the warm floor by the load that the surface should withstand. The average of 1 m2 is 200. 300 kg.

The need for an impressive screed arises only:

  • With poor quality floor base. If the draft floor is littered, and has changes, then it is recommended to align it first and make cracks, only then lay the pipes and pour concrete. Since, if the screed serves as a leveling surface of the water system, then its thickness will be different, and therefore the surface will warm up uneven.
  • When she serves the foundation. As for the screed-function, its average size is 170 mm, more massive does not make sense.
  • In the presence of a room with varying degrees of loads. garage, production facilities.
  • When installing the warm floor on the ground, and if it is of poor quality, it is used in construction in the private sector.

Note! The more massive a layer of concrete, the longer the system will heat up, and therefore it will take more time to get the heat transfer, in this regard, there will be more significant expenses. In addition, this structure significantly reduces the free area.

There are certain parameters of which you need to adhere to:

  • 100 mm. for arrangement in apartments and houses of the private sector;
  • up to 200. for construction in public premises;
  • 300. in industrial buildings.


Standard optimal censer thickness, in accordance with SNiP 3.04.01-87, 45-70 mm is considered. When installing a floor with heating, having a large area, it is recommended to add fibrous fiber to a solution. It turns out the surface is strong and reliable, which can withstand heavy loads.

Therefore, it is possible to significantly reduce the concrete layer to 25. 30 mm. If a reinforcing grid or reinforcing bars is used, then the total permissible size is from 6 to 7 cm.

When using a screed of semi.dry type, the thickness ranges from 4 to 20 cm. Its size is affected by the level of surface unevenness.

For living rooms, the following ratio is recommended:

Note! If the screed has the optimal size, then the underlying system, according to engineering calculations, warms up at the supply site to 45-55 ° C, and the bottom up to 30 ° C.

Under the pipes

Before laying pipes, black filling is necessarily done. It should be of high quality to serve longer, because if you need to replace it, you need to dismantle the entire structure, and this, in addition to the complexity of the process itself, will still require significant costs.

The black screed is subject to significant mechanical loads, it should also withstand sharp temperature changes. With poor quality screed, the base is destroyed, pipes break, and most of the thermal energy is lost.

A solution for the draft floor can be bought ready or made by yourself, based on cement, sand and plasticizer. The ratio of the plasticizer to cement is 1 liter to 100 kg. It is permissible to replace the plasticizer with PVA glue, in the same amount.

Given the experience of the professional, the standard size of the thickness of the concrete layer under the pipes of water.flooring is set. from 2.5 to 3 cm.

Above the pipes

To the height of the concrete screed above the pipes, when laying warm sexual structure, the diameter of the circuit laid in the system, and its step. A thin screed makes it possible to save fuel, but with the help of it it will not be possible to make a flat coating.

Fill the screed

A screed at a plus temperature is made. The whole area is poured at a time. In order not to form air voids, it is necessary to pierce the surface in several places using a thin metal object, since the air itself cannot get out of a heavy cement layer.

If the area of ​​the room is large, after laying the warm floor, special beacons are installed, they are levels for filling the flat layer of solution. Lighthouses are placed 0.5 meters from the wall, and from each other at a distance less than the size of the rule.

Concreting from the far angle to the door is done. The solution is spilled between the beacons, it is evenly distributed and aligned, its level should not be higher than the lighthouses.

So that the screed comes out high.quality, it requires care. To do this, 2. 3 times a day for a week, its surface is wetted with water, since the solution must harden, and not dry. The warm floor system should be turned on after the laid screed is completely dry.

In general, the filling procedure is simple. Subject to the instructions and technology for the manufacture of the solution, anyone can do everything with their own hands on their own.

Choosing and laying the finish coating

It is necessary to choose the finish coating, taking into account the requirements that the floor with heating on them assigns on them. Such coatings have a designation on the package, which indicates its compatibility with warm floors.

In addition, the product should be selected depending on the purpose of the room. In the bathroom with high humidity, it is better to lay ceramic tiles, since it is not afraid of water, chemical detergents and is easy to care.

In addition, tiles are the best thermal conductive material, and is most suitable for floors with heating of any type. The tile is fixed using special glue, which is applied to it with a layer of 50 mm. Crosses are exhibited in its corners, they serve as a guideline to accommodate the next product.

When choosing wood, it is worth noting that it is a bad conductor of heat, so it is better to take exotic breeds of trees. Laminate, linoleum and carpet. also in thermal conductivity are below ceramics, and less environmentally friendly. But in terms of aesthetic indicators they are more suitable, and are able to create an excellent interior. It is preferable to lay them on a warm electric floor.

The laminate is mounted on a heated floor, a thin substrate is laid on top of the screed. The principle of installation of the laminate is standard, by pulling the castle of two nearby tablets.

Linoleum or carpet fits very simply. As soon as the surface dries, it must be cleaned of dust, and lay waterproofing (polyethylene film) on top of it. After that, you can spread the material.

If the area is large, and several lanes will be needed, then they are placed in the joint, and are connected by cold welding. As you can see, it is not difficult to lay a warm floor in a screed, and everyone can do it. The main thing is to correctly draw up a design diagram and choose the right material.