Technology laying of floor heating under the tiles - 10 Steps to Success

which option to choose?

Heated flooring on the network can be represented by a heating cable or termomatom.On the advantages and disadvantages of each type of electric underfloor heating we discussed in detail in the relevant article.Now once again briefly talk about which option to choose.

Electric floor heating of the cable under the tile is cheaper, but at the same time the calculation of its length and the installation itself more difficult.It is recommended that if you can donate a ceiling height (as the screed is thicker).

With regard to the heating mat, it has a number of advantages, becausein fact, it is an improved version of the guide.design feature is that the same cable which has been placed on a special fiberglass mesh, which allows you to maintain an even spacing between the turns.

Besides termomata convenience that the material necessary for calculation to calculate only the room area and on the basis of this parameter to select a suitable size roll.

Which option to give preference to you to decide, but we still advise to use electric mat laying, besides such an option has a lot of positive reviews on the internet.

stacking technology In this article, we will consider laying electric warm floor under the tiles using a heating cable and a special mat.Preparatory work will be similar, the difference is only in the main process.

Step 1 - Prepare the surface

First we need to remove the old flooring and clean the surface from dust.If there are no defects, you can do without a tie (roughing).In that case, if the floor is uneven, it is necessary initially to align their solution, with a thickness of 3 to 7 cm

Step 2 -. Creating a schema

before settlement work necessary to make the scheme of connection of the electric floor heating under the tiles, which noteda step of laying wires or heating mat.

Recommendations for charting:

• the walls is necessary to withdraw not less than 10 cm;
• in places of installation of furniture without legs, as well as household appliances stack prohibited material (heat transfer is difficult, and all the warm air will come back to the handler that will cause it to overheat and failure);
• not necessary to lay material in a straight line.You can accurately cut the mesh to bend the track in the right direction.This option reduces energy consumption, focusing on heating only necessary areas.

Step 3 - Calculation of the material

If you decide to make a warm floor under the tile with their hands as a primary heating, it is necessary to carry out the calculation, taking into account that 1 m2 will require a heater capacity of not less than 140-180 watts.For auxiliary heating power can be used, not more than 140 W / m2 (80 W and can be, it all depends on how well made insulation premises).

All you need - to calculate the area of ​​the room (length * width), and take away from the value of the area occupied by furniture without legs and appliances (as laid material underneath is prohibited).As a result, you get a useful heating area.After that, on the basis of the result determined by the required total power of the heating element and its length.Power per unit length of the heating cable of one meter can vary from 16 to 21 W / m.

For example, if the area of ​​the room is 10 m2 and you chose the heater 100 W / m2 of power, then the result is a total power requirement 1 kW.Choosing a cable 20 W / m, the length of which should be 50 m (1000/20).

Termomat selected on the same principle, based on the usable area and the necessary power.Additionally, you must buy the mounting tape, with the help of which will be mounting the heater to the concrete screed.

Step 4 - Check the old wiring

As you know, for a room of 25-30 m2 will need a fairly powerful electric floor heating under the tiles, which will have a significant load on the wiring in the house.You must carry out the calculation of the cable cross-section of current and determine if your wiring is suitable for the new heating system.If it turns out that the diameter of the living does not match, it is imperative to replace the electrical wiring in the home to a new, more powerful.Also check that the circuit breaker and the RCD line with the new load current.

Step 5 - Insulation

surface Now go to the installation and the first thing to do - qualitatively insulate the surface for laying the electric floor heating.From this utilization efficiency of the system will depend, as well as its efficiency.The best insulation in this case is considered penofol - rolled material with self-adhesive layer and foil coating.All you need to - butt butt glue the entire concrete surface, then seal the joints with tape foiled.Note that penofol must go a few centimeters at the walls of the room to improve insulation.

If you want to slightly reduce the height of the room, instead of penofol can put another heater, for example, polypropylene or polystyrene.

At the end of the robot is recommended along the perimeter walls of glue on top of a heater damper tape, which purpose - to compensate for the expansion of the coating when heated.You also need to put on top of the insulating layer of metal mesh, which prevents direct contact with the heater, and will simplify the process of installation of electrical floor heating under the tiles.

Step 6 - Installing the temperature sensor

to monitor and control of the system, you must install a special thermostat and a temperature sensor.The thermostat is a control (mechanical or electronic) that can be used to expose the optimum temperature and time on / off system.It is mounted in the wall, near the outlets.

that the temperature sensor is concerned, it must be installed in the floor.For this purpose, a special cutting grooves in the wall of the thermostat, which is vertically directed to the overlap.Then the sensor is placed in a corrugated pipe and is carried to the place of the temperature control of electrical floor heating under the tiles.This place serves the middle between the two coils of cable, with no intersections near should not be.Gofra protects the sensor from damage and allows access to it at any time (for example, when it fails).One end of the bellows, which will be in the screed, it is recommended to pour the sealant reliability that the solution did not get inside.

Step 7 - Verification heater

Before laying cable to carry out (or mat), it is necessary to measure the resistance.This value should not differ from the passport data for more than 10%.To do this, you need to use a special device - the meter (shown in the photo below), which also determines which phase, if there is no color-coded wires.If the resistance is within the standard, it is possible to carry out the installation of electrical floor heating under the tiles.

Step 8 - Securing the cable (or termomata)

Now, when the surface is already fully prepared, you need to fix the heating element.If you use cable, perform fixing with mounting tape, as shown in the photo:

In this case also it is recommended to use plastic clips that will make the process of mounting the electric floor heating under the tiles easier and faster.

distance between the coils must be the same throughout the area, or electric heating floor will be uneven.Heating mats laid easier becausethe distance between the coils is sustained throughout.All that is needed - to spread the material according to the diagram and connect the thermostat correctly.

When laying electric floor heating under the tiles is completed, it is necessary to check the connection by measuring the resistance of a multimeter.The resulting value must match the one you have measured before laying.

Step 9 - Fill screed

In order to make a concrete solution you need to prepare the following ratio of materials:

• 4 parts sand;
• 1 part cement;
• 5 pieces of rubble;
• 0,6 parts water;
• 1% by weight of cement special plasticizer (dissolved imparts elasticity).

should be noted that the amount of water should be small, otherwise cracks may arise in a coupler.With regard to the expanded clay and perlite, they are strictly prohibited to add to the solution, becausethese materials violate heat transfer and is one of the reasons conductor overheating.

ties cake thickness should be 3 to 5 cm. Going beyond these values ​​is not recommended.After pouring, you must wait until complete solidification of the solution.Despite the fact that the coupler will harden after a couple of days, it will only completely dry after 4 weeks (and maybe more).Until that time, include electric floor heating is prohibited.

also like to draw your attention to the fact that the tie is only required if you are using a heating cable.Termomat may immediately after laying the warrant under the tile adhesive.

Step 10 - Laying tiles

After screed will seize (2-3 days), you can move on without wasting time to finish the floor tiles.Doing this it is only recommended if you have experience, because you need to ensure that the surface is perfectly horizontal.Tile "sits" on a special adhesive, after which the installation of electrical floor heating under the tiles shall be deemed terminated!

That's the technology of laying his hands.We recommend you watch the video, where you can see some of the nuances of the event:

Also read:

• The cheapest and economical heating system in the house
• Advantages and disadvantages of underfloor heating
• best manufacturers of electric underfloor heating