Laying a hardwood floor on a warm floor

Wiring and its testing

Now you need to connect the system to the power supply, and test the operation. Let’s look at these two processes separately.

System connection

The work to connect the system is carried out as follows:

  • Beforehand in the thermal insulation notches are made along which the wires will be laid. From the center, the wire must go to the baseboard, and then lead to the regulator.
  • An important factor is to ensure that the wire is fully immersed in the insulation to avoid pressure on the wiring floor covering. Otherwise the wiring will be destroyed in quite a short time and the work will have to be redone.
  • In addition, the risk of short circuits increases, which can ruin the entire system and create a fire hazardous situation.
  • Wires are inserted through the channels and then fixed with scotch tape.
  • Next, clips are connected in the foil. They are inserted between the foil and the copper conductor. It is not advisable to clamp them directly to the wiring, as there is a great risk of damaging the film itself.
  • Subsequently, the wire end is removed from the insulation, led to the clamp, and inserted into it, pressing it with pliers.
  • Connection is made in parallel, using two separate wires. It is recommended to take cables of different color to avoid confusion.
  • So one is connected on the right side of the foil, and the other on the left side.
  • Then the connection place is isolated and fastened with a tape.

Connecting the thermostat

The next step is to connect the thermostat.

  • First connect the temperature sensor to the foil, placing it in the center of the section. It represents a miniature thermometer, which will send reports on the state of system temperature to the thermoregulator.
  • As it was said before, it is necessary to prepare a hole for it, in which it should be recessed in order it should not be above the level of insulation, just like the wires. If it is necessary to bend the wire, it is worth preparing channels with a smooth curve, so that over time the cable will not break.

Immediately after you finish installing the sensor you will connect the temperature controller:

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  • It is recommended to install the controller permanently, connecting directly to the power supply, but the use of a socket is allowed.
  • Lead the wiring to the prepared recess in the wall and connect two wires to the main contacts of the regulator.
  • Lead the wires from the foil to the second pair of contacts. Connect the ground with a terminal, but do not connect it to the regulator.
  • Next, fix the controller in the recess, after testing, you can fix it with an adhesive mixture or gemetic.

System test

The last step to be performed before starting the flooring installation is the test of the floor heating system. To do this:

  • Turn it on, setting the temperature at 30 degrees.
  • Carefully test the flooring. It should be completely free of any sparks.
  • Also check the level of heating, it should be the same in all areas. The test is carried out with a special tester.
  • If no defects were detected, then the system is normal and the installation was successful.

After successful testing, it is necessary to cover the entire surface with a polyethylene film, which will act as waterproofing, and also reduce the wear and tear of heating elements. You can also use rolled waterproofing material, which will also provide additional insulation.

At this point, the installation of a warm floor under the parquet is complete, and you can proceed to the laying of the coating itself, but there are a number of factors that are worth considering.

Solid plank and parquet on a warm floor

Planking for underfloor heating. is a real opportunity to make your home warm and beautiful. Contrary to the opinions of many people that you can not put the parquet or solid wood on the heated floor, including the water floor, the company Junckers (Denmark) has for 40 years, put their solid wood and parquet on the floors with heating! Junckers parquet or solid wood is guaranteed to be installed on heated floors, here you will find examples of parquet we offer to install on heated floors. If you don’t want to read about how hardwood flooring for warm water flooring gets along, you can call our experts at 7(495) 543-31-43 and they will tell you everything in detail.

If you have an inquisitive mind, read about hardwood flooring for underfloor heating below:

Warm wood flooring. Problems and solutions

This article is dedicated to those practical people who have already opted for underfloor heating, but cannot accept the lack of an alternative to ceramic tiles or natural stone and want a wood floor heating. Many people say that underfloor heating for parquet is impossible. However.

History of underfloor heating It’s no secret that underfloor heating, whether electric or water, is not a new invention of mankind. However, the first standards were not adopted in Europe until 1980, and by 1985 heated floors had already become popular for heating private residences in Western Europe and the Scandinavian countries, where they tend to prefer solid wood in the form of parquet or solid boards as a floor covering.

Technology for laying parquet on warm floors

When the question arises about the method of laying parquet or solid wood on the heated floor, it is often offered options of coating, as a laminate or parquet board, or laying parquet in the traditional way using “special technology” with “special materials” or even abandon the system of heated floors. Of course, you can take the risk and use one of these methods and achieve results, but only for the first time, as practice shows: Traditional installation of parquet on a warm floor In the photo water heated floor under the parquet, laid in the traditional way on the plywood.

The result of this option. The inevitable large gaps that develop between the parquet strips. Why it happens? Not only parquet reacts to temperature changes, but also plywood, which has a coefficient of linear expansion = 1/2 of solid wood, and unlike the parquet is subject to severe warping when heated, which leads to its separation from the concrete base. In this connection some parquet companies, which are ready to install solid wood on the heated floors, use twice as many dowels for plywood fastening, but it still does not solve the question, because the point of plywood fastening with dowels is completely different, not related to the topic of this article.

Parquet and laminate on a warm floor

The same situation with the hardwood flooring, because the basis of the hardwood floor is plywood. Laminate has little reaction to heating, but it has another negative factor called phenol formaldehyde, used by manufacturers to form the hdf base of the laminate, as well as to glue the layers of plywood, which when heated begins to release free radicals, which, in turn, has a bad effect on the environment inside the room.

And yet there is a way to install parquet or solid planks on a warm floor, whether electric or water. Since no one has cancelled the laws of physics, any wood will react to variations in humidity and temperature, and in this case we must take care that nothing impedes this, but regulates the natural behavior of wood. Since Scandinavians have been using underfloor heating for a long time they also have a solution for laying parquet and solid wood on a heated subfloor, which was developed by Junckers, the so-called “floating floor” method using metal clips as a way of connecting the boards together and laying them on the subfloor without attaching them to the subfloor.

Such a floor will never tear away from the substrate, as it is not connected to it in any way. Also staples regulate the natural expansion and contraction of wood with fluctuations in humidity and temperature (more about this in another article), which is especially important when installing parquet on the base with a heating system. Another important factor. is the eco-friendliness of this coating, since all you need for installation are the boards themselves, staples and substrate, which can be laid on any even and dry surface without glues, primers, plywood and other attributes of traditional laying.

Is it possible to lay the parquet flooring on the warm flooring?

The problem of keeping heat in the house is always relevant for Russian consumers, both in panel and brick houses, and in wooden. As they say: “The Siberian is not the one who doesn’t get cold in the cold, but the one who wears warm clothes. Let’s take a look at the use of underfloor heating systems in the home, and their combination with flooring such as hardwood flooring.

Firstly, it is worth noting that today there are three types of floor heating: water in screed, electric in screed, as well as infrared flooring. Let’s find out how they differ and if their tandem with a hardwood flooring is possible.

The water-circulating type of floor heating is considered one of the safest and most effective ways of heating. It works from the central heating or a special mini-boiler. The process of installing such a system is quite long and time consuming:

a) The first step is to cover the subfloor with thermal insulation material. which is most often made of foam with a thermo-reflective foil.

b) Second stage. installation of plastic pipes.

c) The third stage is pouring a concrete slurry. screed for the heating system (it takes a month to dry).

d) The fourth stage. finishing floor.

It is worth noting that the pipeline should be installed with a spacing of not more than 30 cm for optimal temperature distribution in the room. Experts say that this type of floor insulation ensures the most uniform supply of heat, and almost no temperature drop (coolant. 55 ° C, floor temperature. 22-24 ° C).

Electric floor heating is more popular than water heating, due to the comparative speed of installation:

a) The first stage is also the coating of the base surface with thermal insulation material withstanding a temperature of more than 100 ° C. mineral wool or polystyrene foam.

b) Second step. laying the cable “in a serpentine pattern” on the installation tape along the perimeter of the heated area. The laying step is calculated according to the formula: (heating area) 100 / cable length.

(c) The third stage is the pouring of cement mortar. screed with a thickness of 30-50 mm, which retains heat and prevents deformation of the entire system.

d) The fourth stage. connecting a cable to the thermostat.

this type of heating is particularly popular at the moment, but the effect of its electromagnetic fields on the human body is not yet fully studied. And the manufacturers carefully recommend the use of double core cable for the system, t.к. it is believed to have a reduced level of electromagnetic radiation.

Infrared or filmic floor heating, according to the manufacturers, is characterized by absolute safety and even a beneficial effect on the human body. This is due to the fact that the heating is done by infrared rays, and is perceived by the human body as its own heat. Installation is notable for its simplicity. no screed is required:

a) First step. laying of the thermal insulation material (isolon).

b) The second step is the sticking of a special electrically conductive adhesive tape around the perimeter of the insulation.

c) third step. laying of the foil, pre-cut into individual modules.

d) The fourth step. installation of a temperature sensor.

the film reaches a temperature of 60 ° C, the wavelength of infrared radiation of 5 to 20 micrometers. What distinguishes this system is that it heats not only the floor surface, but also all objects in the room. from furniture to human body.

Everyone knows that the parquet floor. this is 90% natural finishing material, and consists of perpendicular to each other layers of wood, making such a floor durable and wear-resistant. However, when it comes to resistance to temperature extremes and moisture levels, hardwood flooring is still vulnerable. Not as much as parquet, of course, and many manufacturers offer types of hardwood flooring with markings that allow its use in tandem with the “warm floor” system, but it is still wood:

The first objection to this tandem is the impracticality of using parquet floor heating. Wood is a non-heat conducting material, which means that heating such a floor will be long and ineffective. And a natural wood floor does not require such an effort to insulate, t.к. Is already an excellent heat-saving element in its own right.

The next point against it is a violation of an important rule of operation of hardwood flooring. It is still as finicky as hardwood flooring, and Afraid of temperature extremes, that can be caused by switching the heating on and off. Such an error will affect the aesthetic properties of the material. the wood will start to dry out and deform, leading to creaks, cracks and simply lead to its inappropriate appearance. And in this case, will have to spend again to repair or replace the flooring.

If you still decide to buy a parquet board for a warm floor, you should follow a number of requirements:

  • Important! The board should only be of high quality, preferably from a reputable manufacturer with a proven track record in the flooring market! low-quality cheap material, may contain formaldehyde, which evaporates when heated, will enter your body, which can cause dangerous diseases. from allergies to cancer!
  • Be sure to ! The temperature of the floor surface must not exceed 26°C! The heating should be extremely even!
  • Incompatible! The use of beech and maple parquet flooring for laying on a heating system is not recommended, since.к. these types of wood are particularly sensitive to temperature increases.

To sum up, we would like to say that the floor heating system was devised for particularly “cold” surfacing materials, i.e.е. Thermal conductivity of which is much higher than that of wood. tile, laminate, stone, vinyl tile, linoleum. You can safely lay parquet flooring in the bedroom, nursery, living room, without fear that the floor will be cold. And leave the heating to ceramic/vinyl tile in the kitchen and bathroom, laminate in the hallway, carpeting in the playroom. So you can save an impressive amount of money, and create a unique comfort and warmth of your own home!

Author of the article. Yevgeny Bridsky, director of the company “Floor in the house

The step-by-step technology of installation of parquet on the finished screed

Before you begin, you must clean the room, clean it from household waste. There should be no oil or paint stains on the floor. You should prepare all the necessary tools, materials, study the technology of laying parquet flooring on the screed.

Preparing the substrate

Concrete surface is almost never perfectly flat, dry and hard. In order to level it, experts use several methods:

  • Screeding with cement-sand mortar. It allows you to perfectly level all the differences, damage and defects. But after it is applied, it is necessary to interrupt all technical work for at least 28 days. Then the top layer of screed is removed with a scraper or grinder and primed with a reinforcing compound. The humidity of the base should not exceed 6%. If you have decided to install a system of “warm floor” or just to insulate it, then all the work associated with this should be carried out at this stage.
  • Leveling mixture, it is a rough filler floor on gypsum or cement-gypsum base. The coating layer is usually 1-5 cm. It is recommended to dry about two weeks, everything will depend on the composition. The permissible humidity should not exceed 1.5%.
  • Sand blasting, sanding. This method of leveling the surface is considered the fastest, but before it is necessary to close all the cracks with quick-drying putty or fill the hollow holes with cement-sand mortar.

Lay a waterproofing film on the prepared base. Strips should be laid on the screed with an overlap of 15-20 cm, and the edges should be secured with tape. There should be no subfloors under the parquet used for laminate or parquet flooring. In today’s markets you can find self-adhesive rubber cord and mount it around the perimeter of the room. It serves as an excellent substitute for limiting wedges when laying.

Laying of the flooring material

Before you lay your parquet on the concrete floor, it is advisable to observe certain conditions. The air temperature should not go beyond 18-25 ° C, and humidity in the room should not be more than 45-60%. Bring the parquet strips into the room a few days before installation. This allows the material to acclimatize more quickly. Just like a normal floorboard, parquet is laid along the light streams coming from the side of the window.

laying, hardwood, floor, warm

If the parquet is mounted on steel brackets, it is necessary to nail the fasteners to the back side of each slat so that half the length of the bracket is left free. The distance between the staples should be approximately 15-40 cm. Lay the slats in a row, remembering to coat the ends with PVA glue. When installing the second row in accordance with the technology, make sure that the free edge of the cramp is inserted into the adjacent strip, so it forms a tight connection with the previous one. All other planks must be fastened to each other in a similar manner. The last row doesn’t need to be fixed to the staples, it should be glued to the penultimate row.

In the case of the installation of stretched parquet, each slat must be drilled. The holes should be less than one centimeter in diameter. Start by installing the slats from the middle row. From this groove the rest of the panel will follow. Insert the tongue into the groove with an offset of ¼ or ½ length when joining the tiles. Make sure that the holes in the body of the parquet slats are in line with each other. Trim off the protruding parts.

Once the floor is assembled, you’ll need to run the fastening plastic elastic cords from wall to wall. With them, it will be easy to compensate for flooring changes that occur due to climatic conditions. One side of the string is fixed with a plug. The other end of the cord is stretched and also secured with a plug.

laying, hardwood, floor, warm

Underfloor heating under SPC and LVT coverings

Many people want to install underfloor heating in the process of repair and wonder what kind of flooring to put on top. What are the requirements and the correct combination of SPC or LVT underfloor heating? The expert Grigory Repin already has extensive experience laying such a tandem, so we share what we have been able to find out.

Infrared “warm floor” under the parquet and hardwood flooring

Infrared “floor heating” is a polymer film of a certain thickness in which graphite strips are soldered. They are connected to copper and silver heaters, which have low electrical resistance. The advantages of this type of heating are:

  • Long working period;
  • Possibility of use in premises of the various area;
  • the ability to precisely regulate the temperature;
  • Safety for people and pets;
  • easy installation.

Installation of parquet on the infrared flooring

Installation stages of the film infrared “warm floor” and parquet slats or boards:

laying, hardwood, floor, warm
  • Preparation of the base (wooden or concrete), which must be flat, dry and clean.
  • The damp-proofing material, which is a polyethylene film 50 microns thick, is laid on the prepared basis.
  • Install the thermal insulation material on top of the waterproofing.
  • Infrared films are laid on the insulation layer, which are fixed to the heat insulator with construction adhesive tape.
  • Plywood is used as a substrate for the parquet layer.

Thanks to the even heating of the flooring and the ability to precisely adjust the temperature, the infrared floor heating system is the best for combining with hardwood flooring.

Laying parquet on a warm floor. Myths and Reality

Natural parquet or solid wood flooring does not conduct heat

Reality Natural wood is an excellent conductor of heat. Of course, if you’re comparing solid board to tile, it might seem that tile is better for heated floors. Why? The reason is that tiles heat up quickly and lose heat quickly. Wood takes a little longer to heat up, but it has a longer heat transfer. Through our own tests we conducted an experiment with a thermal imaging camera in an apartment with solid wood flooring laid on the floor with underfloor heating. As you can see in the picture, the surface temperature of a solid wood floor. 27 degrees, while the overall room temperature is. 29.7 degrees.

Laying parquet on a heated floor

If you turn to the manufacturers of wooden floors, whether solid, engineered or hardwood flooring, the requirements are as follows: the difference between the temperature of the air and the temperature of the floor heating must not exceed 2 C; the maximum temperature of the floor heating must not exceed 26 C.

Thus, in order to really operate a warm floor with parquet flooring, you need a long, careful heating with a gradual increase in temperature. The only possible way to do this is to turn on the heating for the entire cold season. We only recommend the use of parquet with underfloor heating if this is necessary for heating the room itself (e.g. country houses in the half-timbered style with floor-to-ceiling windows).

Parquet flooring installation should begin only after all other repairs have been completed in the room and have already installed windows, doors. And the windows should be tightly closed. If the room is planned heating and air conditioning systems must be in working order. It is very important that all finish materials dry as well as possible. If the installation is made on the first floor of a house with a basement, the latter should be thoroughly ventilated. In addition, all undesirable sources of moisture must be eliminated, since the humidity in the room should be within 40-60%.

Indoor temperature should range from 18 to 22C. Parquet can only be laid in heated rooms. It is forbidden to lay it outdoors.

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