The temperature of the electric under-tile floor heating

We choose a thermal floor in the bathroom under the tiles

Tile is one of the most common flooring options for the bathroom. It does not absorb moisture, is easy to clean, and gives the room an original and stylish appearance. The only drawback is that such a coating is cold, which is especially felt if you stand on it with bare feet immediately after a shower or bath. However, this problem can be eliminated by using a floor heating system. It provides heating of tiles (or most other flooring materials) to the desired temperature.

Electric under-tile resistive heating floors

Resistive systems under the tiles imply installation of a heating wire that forms a heating circuit connected to the power supply system. Heating sections or mats can act as source of heat. We propose to get acquainted with the features of installation of each type of underfloor heating.

Electric underfloor heating provides quick heating of tiles

Performance data

Electric underfloor heating is highly efficient. Almost all electrical energy is converted into thermal energy. Cable used to build the system can have a capacity of 15-40 W/m, which allows you to choose the best option depending on the thickness of the screed and the purpose of construction. During operation, the heating cable is able to heat up to 90 ° C. To generate energy heating circuit should be connected to a voltage of 220 V, which makes it possible to install in any room.

High performance is ensured by the use of quality materials

A typical diagram and installation technology underfloor heating

The order of the system can vary slightly depending on which type of heating circuit is preferred. Heating sections or mats can be used as source of resistance heat. In the first case, to form a heating circuit, a one- or two-core cable laid under the screed is used. Such systems can be used as main or additional heat source.

Attention! Cable systems are hardly ever used for tile underfloor heating in apartments.

Heating mats represent a pre-wired heating circuit. Tiles are laid on the tile adhesive applied to the underfloor heating system.

The system layout depends on the type of heating circuit

When using heating sections

Assembling the system on the basis of two-wire cable is carried out in the following sequence:

Note! Draw a diagram of the cable arrangement, precisely marking the position of each element.

When using heating mats

If you have decided to do the installation work by your own forces, we suggest you watch the following video, which shows in detail in what sequence and how to install the individual elements of the system:

Advantages and disadvantages

Electric underfloor heating is the best option for any room. Its main advantages are:

  • The possibility of installation in a country house and in a city apartment;
  • uniform distribution of heat on the floor covering;
  • the possibility of using it as the main and additional source of heat due to the full heating of the air. In the off-season in a city apartment is the best option;
  • No protruding elements that can deteriorate the appearance of the flooring;
  • long service life in case of observance of the manufacturer’s recommendations;
  • the ability to regulate the degree of heating of the tiles, the frequency of activation and deactivation;
  • minimal reduction in the height of the ceiling;
  • easy servicing. There is no risk of a hidden leakage;
  • Possibility of installation with one’s own hands without special expensive tools.

Heating the floor surface is carried out in a short time

Of the disadvantages are the high cost of electricity and the need to arrange special wiring with reliable earthing and protection shutdown system. In addition, when electricity passes through the heating cable, an electromagnetic field is formed, which can have a negative impact on human health.

How to make an electric underfloor heating under the tiles: film and cable version

Underfloor heating system is now widely used in the arrangement of residential premises. This kind of heating contributes to an even distribution of temperature and maintains a comfortable microclimate in the room. The choice of system and the technology of its installation depends on the type of flooring.

Let’s understand how to make an electric underfloor heating under the tiles and outline the acceptable ways of installation. In addition, here is a step-by-step instruction on how to arrange the floor heating and describe the important points of connecting the system to the power supply.

How to check the floor temperature sensor?

The first thing to do is to check it for proper operation. You can do this in several ways.

Using a multimeter

If the floor heating does not work properly, you must disconnect it from the power supply, remove the sensor by disconnecting it from the thermostat, and check the resistance. Like other devices, it can fail.

To perform the test, set the multimeter to ohmmeter mode, set the optimum measuring levels, and measure the resistance of the lines leading to the sensor. The standard resistance values at various ambient temperatures are indicated in the thermostat’s data sheet. Understand that temperature sensors and thermostats from the same manufacturer are best matched.

Checking without a multimeter

If you don’t have a multimeter handy or can’t find one quickly, you can use a light bulb or LED to check. An electric circuit is created. The bulb is connected to the battery through the thermistor. After that, it is heated. At the beginning of the light bulb should burn as brightly as possible, and then gradually become dimmer as the thermistor heats up. If this is not observed, it means that the sensor is out of order and it must be replaced.

As a result of these actions it is impossible to know the level of resistance, but it is possible to determine whether the sensor is corrected. If such a situation occurs after the purchase of a new sensor, it should be returned to the store, since it will no longer function as intended.

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What to choose an electric underfloor heating under the tiles, pros and cons, top manufacturers

The main advantage of ceramic tiles is the possibility of laying on any existing heating system: water or electric, as it has a high thermal conductivity.

If there is a question, what type of floor heating is better to choose under the tile, then our answer. electric, because it is easy to lay, and does not put pressure on the ceiling, as a water heating system.

Let’s take a closer look at all the devices with floor heating used under the tile to find out which is better in each case.

Pros and cons of different types of systems

You can buy these types of underfloor heating in hardware and construction stores:

Electric-water systems have appeared recently, so it’s still difficult to judge their effectiveness and durability. But electric and water heating is time-tested. The pros and cons of these floors are well known.

We propose to consider in detail all options for floor heating, compare their advantages, disadvantages, limitations in the scope of application. So it will be easier to choose a suitable underfloor heating under the tiles, taking into account the conditions of use, type and purpose of the premises.

Option #1: water underfloor heating

Underfloor heating is a system of pipes with heat transfer fluid, which is located between the concrete or wooden base and the finished floor covering. Heated water flows into the pipes either directly from the boiler or from the central heating.

You should not choose a water system for an apartment in a high-rise building. This is due to the inconvenience that may arise from connection to the central heating, and the possible consequences of accidents. The risks are too high. But for private homes, there are no such restrictions.

Water systems are economical. Can cut energy consumption by 20-30%, and by up to 50-60% in rooms with high ceilings. This is possible due to the fact that the temperature of the coolant in the pipes does not exceed 30-50°C. If the height of the ceiling in the house is higher than standard, the air is not fully heated: 2-2.5 m above floor level.

The construction of a waterborne floor is complex and is a multi-layered pie. And at each stage of installation it is necessary to carefully perform the work, otherwise accidents and leaks are possible. If this happens, you have to tear down the floor to repair it.

Correctly installed water floors become a reliable and efficient heat source. Ideally, they should complement or duplicate the main heating system. One more nuance: in order to have uniform and stable heating you need to take care of quality thermal insulation.

Option #2: Electric cable

Cable floors do not require any special care and maintenance, unlike water systems. They can be installed in summer houses or cottages, where they do not live permanently, but visit on weekends and holidays.

You have to put anti-freeze liquid in the water-floor pipes, so the system doesn’t freeze up during hard frosts. It is also desirable to clean the heat carrier. No such problem with cable.

The height of the room from floor to ceiling is insignificantly reduced when installing underfloor heating, i.e.к. The thickness of the screed can be minimal. On average the thickness of the “pie” of a warm electric floor is not more than 5 cm. The weight of the cable is much less than that of the pipes. Accordingly the load on the floor slabs is also reduced.

A 220 V connection is sufficient for electric cable flooring, but the quality of the wiring is of fundamental importance. Power rating of the equipment is ca. 80. 150 W/m.kV, and the power grid in the house must be able to withstand the additional load. This limits the use of electric heating systems in rooms with old wiring: it will have to be replaced.

In the right conditions the cable can last up to half a century. The design is simple, reliable and requires little maintenance. This is due to the absence of rubbing parts that could fail. In the Oslo Cathedral, there have been cases where an electrical system has functioned for 62 years without a single failure. It was dismantled in working order when replacing worn-out coating.

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Cable floor under the tile. a great solution for apartments and private homes. An electrical system consumes more resources than a water-based system and is more expensive to operate, but has its own undeniable advantages.

Option #3: Heating mats

This is still the same cable floor, but in a more convenient form: the wire is mounted on a special grid (width 50 cm, length up to 30 m). The use of mats significantly speeds up the installation of electrical systems. They can be laid not on the entire floor, but only on the part that needs to be heated, avoiding areas where furniture or plumbing will be installed.

In the heating mats are used single- and double-core cables. Products of the first type are cheaper, and the second. safer, t.к. they do not emit any electromagnetic fields. Both types of thermal mats are easy to install and do not reduce the distance to the ceiling (mesh thickness. about 3 mm).


Thermo mats are the ideal solution for underfloor heating under tiles. This system is as simple and efficient as a cable system and requires minimal effort to install.

Option #4: film systems

Foil systems work by emitting energy in the infrared spectrum. They heat opaque objects, t.ч. floor covering. The main advantage of the film is that the temperature of the heating rods themselves hardly rises, t.е. No unnecessary energy consumption. As the upper surface warms up, the heat rises 2 to 2 degrees Celsius.5 м. The comfort zone is at the bottom, near the feet.

The system is simple. It consists of a polymer heating foil about 0.4 mm thick, a temperature sensor, a temperature regulator. An electric current is fed to the graphite strips and they generate infrared radiation.

A sensor is triggered when the temperature reaches the set point, and the thermostat controls the operation of the floor heating. The ease of use of the system depends largely on the type of the selected temperature controller.

Some models are true minicomputers that can be programmed to run for a certain period of time. a week, two weeks or a month.

For all the advantages of infrared film, it is better not to lay it under a tile or choose with carbon heaters, because.к. Bimetal is not suitable. Due to the poor adhesion of the film to the tile adhesive, problems arise: the system does not work efficiently.

Difficulties with the quality of adhesion of glue and underfloor heating are solvable: you can lay a fine mesh fiberglass mesh or GFB sheets, and over them. tiles. This will make things a little better. But then a legitimate question arises, is it worth overpaying for materials and investing more effort in installation, if you can just choose heating mats or a cable system.

Option #5: Electric-water heating

Such heating is a system of structured polyethylene pipes with a diameter of about 2 cm. They are filled with antifreeze and laid a seven-core chrome-nickel heating cable with Teflon coating. Piping is laid in the concrete screed. If it is damaged, antifreeze will appear on the surface of the coating, marking the place of failure. This makes it very easy to diagnose and repair the floor heating.

The heating element gives off heat to the antifreeze which boils almost instantly. Due to this, the floor heats up very quickly, and then keeps the temperature for a long time. This system allows you to use minimum electricity with maximum efficiency. It is resistant to overheating, so it can be safely installed under furniture, to do the rearrangement.

Advantages and disadvantages

Every heating system has its pros and cons. If you compare the electric version of underfloor heating with water heating, the first has clear advantages:

  • electric heating is safer in terms of the possible flooding of the neighbors;
  • there is no need to coordinate its installation with the supplier of thermal energy;
  • installation of water devices requires an impressive layer of screed, which is an additional load on the floor, in addition, reduces the height of the ceiling. With electric heating required layer of casting is significantly less;
  • in this option it is easier and more accurate to set the optimum temperature modes of operation (almost to one degree). In this case, the product consumes less electricity;
  • correctly calculated and installed system can last for decades without repair and does not require annual maintenance;
  • possibility of installation in multi-storey buildings;
  • the electrical system is completely hidden from sight, and therefore there is no possibility of burns or injuries. In addition, it is more aesthetic and saves space in the room to a greater extent;
  • Heating with underfloor heating does not dry out the air;
  • There is no heat leakage, and therefore. a higher coefficient of performance;
  • tile flooring itself accumulates heat, which gives a good effect in terms of financial payments;
  • the variety of existing types of floor heating provides the best choice of system for a particular type of room.

Electric floors are used both as a basic heating system and as an additional.

In either form, they provide: uniform heating of the floors, the optimum temperature throughout the space of the room, and the upward convection currents formed exclude the formation of drafts.

Underfloor heating under tiles: types of underfloor heating, features and installation of electric underfloor heating

Tile floor has important advantages: it copes well with moisture, can withstand substantial mechanical stress, is not exposed to aggressive chemicals, can perform its functions for decades. It can be made even more comfortable by using under-tile floor heating. In order to choose the right option, it is necessary to know the features of different floor heating technologies.

Electric under-tile floor heating: benefits, calculation and installation

One of the most popular floor coverings is tile. Its surface is resistant to mechanical damage, water ingress and abrasion, in addition, it is easy to clean. Most often, tiles are used in bathrooms, saunas and kitchens. Sometimes they are used on balconies and in hallways. Perhaps the main disadvantage of tile is that it is always cold in winter and summer. Imagine standing barefoot on an icy tile after a hot bath or a child sitting on a cold floor. Just the thought already gives me the creeps. This disadvantage is easy to eliminate simply lay an electric underfloor heating under the tile. Most often, buyers think about it before the start of the repair, for example, when the replacement of the old flooring or decoration of a new home.

So why do more and more people choose this type of underfloor heating?? Everyone has different needs. But here are the key benefits that motivate.

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  • The tile surface will be warm, like heated sand on the beach. How nice it feels to walk on it barefoot! And toddlers can safely play on the floor without the risk of catching a cold.
  • There will be source of heat in the room, the only or in addition to the main. In unheated places like bathrooms or balconies, a heated floor can easily replace a heater or radiator. And in heated rooms, such as the kitchen, in the cold season will be very useful in severe cold.
  • The tiles will dry faster, which is especially important in areas of high humidity next to the sink, bathtub or shower stall. It will get rid of dampness and generally reduce the humidity in the room.

In addition, electric underfloor heating is affordable and easy to install. That’s why you can do the assembling by yourself. If you are interested in the installation of underfloor heating, you can do all the work yourself. Our article will help to understand the selection and installation process of heating elements.

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