Often the concept of "heating" is associated with the cast-iron batteries that used to be in each apartment. Such radiators were warmed up for a long time, but they kept the heat in the house for a long time, and they functioned, in general, not bad, the only negative is, to a large extent, an unpleasant appearance.
With the advent of new materials and technologies, everything has changed. Today, a worthy replacement for old heating radiators has become a system of warm floor, for which, the heating line is mounted in the floor. To date, such structures in the floor are equipped with all new buildings.
Having decided to lay the heating pipes in the floor under the screed, it is necessary to decide which type of pipes will work reliably for a long period. This solution at first glance seems quite simple, but practice shows that it depends on many factors.
Why laying the heating pipes in the screed is called the right choice? After all, there is an easier way out - this is the replacement of batteries. Yes, it is easier to do this, but it does not mean more efficient than this styling, because the laws of physics have not been canceled yet.
The principle of the heating system is completely different. Traditional radiators provide heat. It then passes through the walls into the ceiling zone. It turns out that the ceiling zone is first heated.
After the air moves to the lower area, but here it gets already cold. Thus, the following situation is obtained: in the area of the ceiling, it is warmer, and below, the temperature is much lower. The same is true for the convection principle.
And the laying of heating in the floor changes everything. The maximum heat is located below, and after cooling down, it passes to the upper part. This principle of heat distribution greatly increases the comfort of housing. Accordingly, such a system seems most effective.
Heating in the floor: advantages and disadvantages
Before hiding the heating pipes in a concrete screed, it is necessary to study in detail all the pros and cons that this heating system demonstrates. They should not be ignored, because it will guarantee that the finances will be invested sensibly.
Consider the advantages of a heating system in the floor.
- Long period of use.
- Even heating level.
- The system in concrete pouring in the floor is distinguished by cheaper content, when compared with the classical options.
- Easy maintenance.
- There is no moisture.
- Economical use of the area.
- Complete safety (installation of the system in a concrete screed allows avoiding children's injuries and burns from hot pipes).
- In the air, the required humidity rate is constantly maintained.
The disadvantages of the network under the screed are not many, but they need to be read.
- First of all, when laying the heating line under the screed, the height of the room decreases.
- Repair work of pipes is not as easy as in classical cases, because finding a leak in a hidden highway is not easy.
- Conducting installation in specific locations does not work. These include a flight of stairs, etc.
IMPORTANT! These buildings in the mansions are carried out without restrictions, and the apartment will require a different approach. In multi-apartment buildings, you need to make sure that the central network can cope with a large hydraulic load.
Disadvantages need to be carefully studied, and you need to be prepared for the fact that sooner or later the heating in the screed can give leakage. Do not forget that the leak on the pipe in such constructions is not easy to detect.
And after determining the place of leaks, repairs will not be easy. Therefore, it is important to work with full responsibility.
What types of materials can be used, and which are not
Before making a screed, you need to find out the heating pipes of which materials will be most suitable for installation in the floor. There are a lot of options - you can choose products made of copper, you can stop on such inexpensive and practical material as plastic, which in case of competent installation, will work "one hundred percent".
It is also worth paying attention to products made of metal-plastic. Which of these is better to choose? In order to answer the question posed, consider the pipes of the listed materials in more detail.
Pipe products for laying in the floor should have the following properties.
- High index of strength.
- Resistant to corrosive formations.
- Non-permeability to oxygen, which causes corrosion of steel parts of the heating network.
- Good heat dissipation.
- A small coefficient of expansion.
- Ecological harmlessness.
The assortment of the following materials - polyethylene, polypropylene and metalloplastics - fully meets the listed requirements for laying in the floor under the screed.
Polyethylene pipes and other types of pipes that are used in the screed, have pros and cons, therefore, before you hide them and make a screed, you need to study each material thoroughly.
Polypropylene pipes for laying in the screed are favorably distinguished by low cost. But, these products are not widely used. The reason is that the pipes made of polypropylene, hidden in the screed, have a number of significant disadvantages.
Thus, the polypropylene (PP) assortment has an eight-diameter bending radius. When laying a polypropylene system of a warm floor, this affects the distance between a number of running branch lines.
If the diameter of the polypropylene line is 15 mm, then the branches will be separated by 120 cm, which will have a bad effect on the heating of the room. It is also possible to mount a polypropylene water-heated floor at a temperature of not less than fifteen degrees. Products made of polypropylene are inexpensive and have a lot of positive characteristics.
Polyethylene Pipeline Materials For such a task, only cross-linked ones are suitable. Crosslinked polypropylene is durable, reliable and resistant to the influence of high temperature. But, in the cement floor, these pipes do not keep their shape well. Therefore, to fix these pipes, you need to use a large number of fasteners.
Experts well speak about metal-plastic products. The metal-plastic pipe used in the screed serves for a rather long time.
Metal-plastic products appeared on the market not so long ago, but quickly took the position of the leader. A special three-layer construction of these pipe materials can serve up to 30 years.
The disadvantages of metal-plastic pipelines include the relative complexity of installation work at home. it is not difficult if you have some experience of such work.
Therefore, it is important to know the sense of proportion when clamping. At home, laser or ultrasonic welding is not used for this assortment.
If it is difficult to pinch the joint, leakage should be expected. And, if you "squeeze", the fitting will fail, and it will have to be replaced.
But the pipe of copper enrolled in a number of impeccable leaders. It is much superior to polyethylene analogs. Copper is also inferior to the cross-linked polypropylene and metal-plastic. In this case, there is only a huge list of positive characteristics.
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A disadvantage of copper products is one. It too high price, which is the reason that not all can afford to use the structure of this material for laying under the screed.
Speaking about the "warm floor" system, you need to remember such material as metal. Metal pipe products in the screed, experts call an unreasonably risky venture. The water in the heating network is often saturated chemicals, and the metal can simply can not resist before this aggressive influence.
Eventually, corrosion appears in the metal structure, and hence further leakage. Just as harmful to the metal and hard water.
Therefore, plastic and copper products - this is a more practical solution for laying on the floor. Therefore, metal pipe-rolling materials are not recommended for this work.
Preparation of premises
Before closing the heating pipes in the floor screed, it is necessary to take out all the points of the other connections, and put the windows and doors. From the room it is recommended to take out pieces of furniture, and dismantle the old heating system, if this work is not carried out in new buildings.
Surface irregularities are allowed within a radius of one centimeter. If their dimensions exceed these figures, then the basis for heating should be leveled.
The final stage of the preparatory work is cleaning. It is necessary to make it before closing the structure with a concrete screed. With this task, industrial vacuum cleaners are excellent.
Laying the "warm floor" in the screed
This option is used in an apartment and in a private house. It is used even for flooring in wood, or under a coating such as laminate.
The fill is performed on a rough or wooden floor. Act in these situations on the same principle.
- Dilute the waterproofing.
- Wrap the insulation.
- Lay the reinforced mesh.
- The wiring and fixing of the pipeline is in progress.
- Adhere the damper tape.
- The entire structure is poured on the floor with a solution.
We conduct waterproofing
It protects against ingress of moisture and to prevent contact of wet solution with the floor. After it is necessary to warm the work surface. Optimum option for this task is polystyrene foam. Similarly, high grades from specialists received a foam-derived material - foam foam.
On the insulation material, a mesh of steel is applied. It is needed to evenly distribute the load over the frozen pour. Without this reinforcement, the screed can crack.
Pipe wiring in such networks is performed in two ways.
- A snail.
- A snake.
The first scheme is a gasket in a circle from the walls to the center of the room. Such actions do not use steep turns of the circulation direction.
The snake moves from any wall, and then goes to another, located on the opposite side. With this design, the direction of movement of the liquid on all the pieces is changed by 180 degrees. In everyday life, the first method of laying is used.
The contour should be strengthened on the surface. At these actions it is necessary to consider, that it increases the sizes on extent. Therefore, the fasteners can not differ in rigidity, and the pipeline must be able to slip. For this task, clips made of plastic that are attached to the floor are effectively used. You can also put simple clamps.
It is very important not to forget to use a damper tape. It is a strip of foam polymer material. It must be glued along the perimeter of the room on the wall. And the bottom edge of the tape should be carried on the floor. This measure will help level the increase in the fill, and will not allow the solution to adhere to the walls.
Many people are interested in how many centimeters the screed is required to cover the pipe structure. Masters say that it can not be less than three centimeters. Its optimum value is 7 cm.
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When laying heating pipes it is very important to maintain the same step between turns or zigzags. So, for example, for a room of 20 square meters. m, this distance is equal to twenty centimeters. In a room with a large area it is recommended to install several spirals or snakes for heating.
Pipes for heating in the floor can be hidden under a wet or dry fill. The first method is more common. Because with a "dry" pouring of voids, the density level is lower, and because of this, the heat recoil is slowed down.
It is not difficult to build such a heating system by one's own hands. The main thing is to have patience and some knowledge. If we add a little more to this, the excellent result of the heating operation in the floor will be able to please more than a decade.
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The discussion is closed.
One of the important tasks that become during the installation of the heating system of housing is the correct laying of heating pipes in the floor. From this will depend not only the efficiency of heating the room, but also the durability of the system, as well as its correct operation and safety.
The way in which we chose the material for the heating circuit will depend on the way in which we will build it.
The heating circuit can be hidden either in the screed or with a floor covering. Where to hide them, we choose depending on the room and the way it is more convenient and requires less labor and financial expenses.
Laying heating pipes for screed
We can hide the contour in the screed. This method is widely used for the installation of "warm floor" systems. The step-by-step process is as follows:
- We carry out a rough screed made of a mixture of concrete and expanded clay. Claydite is a new generation of insulation, which also has a very small mass and helps to reduce the load on the foundation and floors;
- After drying of the screed, we spread its surface with bituminous mastic, thus providing waterproofing;
- On the layer of waterproofing we put a warming layer. For this we can use Penoplex - a material from air and expanded polystyrene. Penoplex perfectly holds the load on compression, has high heat-insulating and noise-insulating properties, a small mass and is perfectly processed with the help of the simplest tools. All joints in the heat-insulating layer are treated either with glue or with mounting foam. Also sold slabs of penoplex with the already finished marking for laying pipes;
- On penoplex we stack either dense polyethylene as a vapor barrier, or penofol. Penofol - a modern insulation, consisting of foamed polyethylene and foil. This material is characterized by high thermal insulation properties, does not leak and does not absorb moisture, is highly ecological and non-toxic. The foil serves to reflect the heat radiation back into the room. Therefore, in the case of unilateral foam foil, we put it with the metallized side up. It will provide protection for the penopolix and will further reduce heat loss. At the joints, we glue penofol with an aluminum adhesive tape;
- Next, the heating circuit is laid. Its fixation can be carried out with the help of special clips and reinforcing mesh. You can use a heater, where pipes for pipes have already been laid. Use also perforated strips. The process itself is carried out in such a way that the bay of the collapsed pipe is placed on the floor surface and stacked according to a previously calculated scheme;
- Next, pour a layer of concrete 30-50 mm thick - this allows us to hide the pipes in the screed;
- After the solution has dried, we can begin installing the floor covering.
Inclusion of the system "warm floor" should be done gradually to avoid the appearance of cracks in the screed. For laying under concrete it is best to use pipes made of cross-linked polyethylene either.
Laying the contour under the surface of the flooring
If there is a question, where to hide the heating pipes, but for some reason we do not want to fill them with a screed, you can do it with the floor covering.
Let us consider this process in more detail:
- A roughing screed made of concrete mixed with expanded clay is carried out;
- After the solution dries, spread the surface with bituminous mastic and glue the foam board onto it. At the joints, remove the slots, gluing them with glue, or blowing the mounting foam;
- Over a penoplex, we put either dense polyethylene or penofol. Penofol have a shiny coating up. Polyethylene glued together at the joints with adhesive tape, penofol - glued metalized tape;
- We lay the heating circuit, fixing them with clips, clips, or we use a heater with already marked channels for laying pipes;
- Between the pipes we place logs and carry out the installation of floor covering on them.
If we choose this option, then the contour should be made of metal-plastic. Polymer pipes in this case are not suitable, since they can easily be damaged and require mandatory protection in the form of a concrete coating.
Conclusion
The methods that make it possible to hide heating pipes under the floor are fairly simple and quite feasible on their own. The choice of method depends on the conditions of the gasket - both are equally effective and convenient.
We all know the classical heating system from childhood. These are metal massive radiators, suspended along the walls and hot to the touch.
The cumbersomeness of metal in our day is slowly replacing the light and more comfortable plastic. But what about the location? How effective is the distribution of heat sources?
Heating pipes under the floor are a more rational alternative, which has many advantages over the outdated way of heating the housing. But let's get everything in order.
General Provisions
Placement of heating pipes under the finish surface is also called an installation. Consider how this works and how it differs from wall radiators.
Principles of operation
The image from above shows well the fundamental difference between the two methods.
Convectors, radiators, fan coils, which refer to the standard heating method, spread heat through convection. This is when the heated air along the walls rises, it cools down, descends and is again tightened in the heating element. The process is constantly repeated, as a result of which the warm air is at the top, cool underneath.
And now let's ask ourselves: where are we? Taking into account the laws of physics, the answer is obvious - below. Not only is it not comfortable and harmful for health, to be in the cold. So it's not profitable from the point of view of economy. Why and for whom should we heat the ceiling?
Heating pipes under the floor do not use convection. The main air heating occurs evenly at the level of the feet. Then he rises to the ceiling, where he cools. For well-being and comfort, this is the best heat distribution. More clearly, it is demonstrated in the scheme given below:
Characteristic
Heating pipes in the floor: the pros and cons.
Let's start with the advantages:
- Uniform heating, excluding the presence of too hot and too cold areas.
- No dust circulation.
- The floor surface is always dry. This eliminates the occurrence of mold.
- Destroy favorable environment for the multiplication of bacteria and dust mites.
- Observed natural air humidity, taking into account the preservation of its freshness.
- Increased sanitation. Such floors are easily cleaned and disinfected.
- There is no danger of injury or burns, as it can be in the case of radiators.
- Hidden heating pipes under the floor do not interfere with the arrangement of furniture.
- Reduces the cost of heating the building. Due to a more optimal heat distribution, it is possible to save up to 30% of the energy expended.
- The service life of more than fifty let.
Some drawbacks, with such an impressive list of merits, the laying of heating pipes in the floor also has:
- Impossibility of realization on staircases and in tambours.
- Difficulty of repair in case of leakage.
- Raising the level of the floor covering.
Advice: do not install a system of water-heated floors in an apartment not provided for this purpose.
This will greatly increase the hydraulic resistance of the central system and create the danger of damage to the heating pipes.
For installation in a private house there are no restrictions.
Installation
The laying of heating pipes in the floor is carried out by a snake, and then it is poured with a cement-sand mixture with the addition of special impurities. allows you to get maximum heat transfer. Its practicality and reliability protects against damage and extends the service life to fifty years.
To do everything correctly the following instruction will help you:
Preparing the room
By this moment there should be:
- The door and window frames are installed.
- The level of the clean floor was noted.
- The connection points of all communications are displayed.
The unevenness of the substrate should not exceed one centimeter. In the opposite case it is necessary to conduct an additional screed.
The final stage of preparation is thorough cleaning.
We conduct waterproofing
As a waterproofing we use a plastic film with a thickness of at least 0.2 mm. It is necessary to protect the insulation material, which loses its properties when it gets wet.
Advice: it is desirable to cover the warming layer on both sides with a polyethylene film.
Because water can also get on top, for example, when pouring concrete.
Lay the vapor barrier overlap up to ten centimeters, place the docking assembly adhesive tape.
We lay the edge band
An important and, unfortunately, often missed moment.
The damper tape is made of silt of foamed polyethylene, has a thickness of about eight millimeters and a width of up to eighteen centimeters. It serves to compensate for the temperature expansion of the screed.
The walls must be carefully prepared, plastering, cleaning must be done. We mount the tape at least two centimeters above the level of the planned floor. Fix liquid nails or construction stapler.
Tip: to speed up and simplify the process, you can buy a ribbon, which is one of the sides sticky.
Then it will be sufficient to remove the protective layer before laying.
We conduct insulation
This stage is necessary to direct the heat flow to its destination, more precisely upward. Otherwise, a significant part of the heat will go to the damp earth.
For this, you can use expanded polystyrene, mineral wool, foil insulation, polystyrene concrete. The best price, quality and complexity of installation are sheets of expanded polystyrene.
On their example we will consider the installation of a heater:
- We start from the opposite to the door of the left corner.
- Laying is done from left to right, the cropped part of the last sheet becomes the beginning of the next row.
- Installation takes place across the entire area, and not just where the pipes will pass. This gives uniformity and strength to the coating.
Installing pipes
Pipes for floor heating can be:
- metal-plastic;
- copper;
- stainless steel;
- polybutane.
But, the best variant for today to apply in technology of warm floors products from the sewed polyethylene of the raised density.
The installation of heating pipes in the floor has several important points that we will consider:
- To increase the power of the thermal floor, the pipes should be laid more tightly. For example, near windows where heat loss is higher is recommended to increase the number of turns to improve the result.
- More dense than ten centimeters to lay does not make sense, since this is a threshold of usefulness. Closer placement will not increase the heat supply.
- To avoid the occurrence of cold areas on the floor surface, the distance between pipes must not be more than twenty-five centimeters.
- From the walls should provide for a retreat of about fifteen centimeters.
- There are two ways of installing pipes:
- bifilar - in the form of a cochlea or a spiral;
- meander - in the form of a snake or zigzag.
The best way to fix water pipes is fixing tires, they are also fasteners, mounting rails, fixing tracks.
The mounting rails raise the product a couple of millimeters above the heater. Their length is usually two meters. Clamps at a distance of half a centimeter. To the heater are attached with glue.
A polyethylene pipe is inserted into a one-way lock and can not jump out of it. Convenient and simple.
The result
The installation of heating pipes under the floor has a huge number of advantages over classic wall radiators. The most important is the more optimal distribution of heat flows, which increases the level of comfort in the room, and saves heating costs.
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The video in this article will acquaint you with more information on this topic.
Do you want higher comfort and coziness in your home? Install the heating pipes under the floor.
Preparation of heating pipes for screed filling
About what, we said in one of our previous articles. Today's topic concerns only those products that can be laid by a hidden method in the floor. We will consider the pros and cons of installing heating pipes in the floor screed, as well as understand the materials that are suitable for this. In addition, we will briefly dwell on how to make warm floors from heating pipes under a wooden covering.
Heating pipes in the floor: the pros and cons
The heating system of the heated floor is of two types:
- electric;
- water.
More specifically, let us consider the second type - a water-heated floor. What does he make of himself? The principle of operation is that the heating pipes in the floor screed give the heat to the frozen solution, and the latter, in turn, heats the air in the room. The heat is evenly distributed throughout the perimeter.
This method of installing heating pipes in the floor has pros and cons. Let's sort them out. The merits of heating pipes in the floor include:
- no batteries;
- the floor is always warm;
- the room warms evenly;
- saving.
The fact that the heat source is at the bottom is good. The warm air rises to the ceiling. If there are ordinary batteries, then under the ceiling is always warmer than at the level of the plinth. Smudged heating pipes in the floor warm up the room faster, while distributing heat evenly throughout the room. Conditions of life become more comfortable.
It's always nice to walk barefoot on the floor. The temperature of the coolant in the pipes under the screed does not exceed 40 degrees. This is a low temperature heating system. On the surface of the finish floor, the temperature will be of the order of 30 degrees, and it is not necessary anymore.
The large area of heat exchange makes it possible to use fuel more efficiently, on which the boiler house operates, accordingly, this saves money.
Negative qualities of heating pipes in the screed include:
- risk of leakage;
- lack of access to the circuit;
- complexity of installation.
The biggest stumbling block for installing heating pipes in the screed is the fear of accidents. And this can not be called an unreasonable fear. Leakage of the heating pipe in the screed, what should I do? Difficulties begin immediately. Leaking coolant visually you may not notice, but your neighbors will notice for sure. If the heated floor is installed in a private house, then the pressure drop in the system will indicate the depressurization. A wet spot on the surface does not always happen.
Filling of heating pipes with solution is carried out by beacons
Even if you are lucky and the place of leakage in the heating pipe under the screed is visible visually, you still have to do a lot of work. It is necessary to remove the finish coat, if it is a tile, then a part of the floor will have to be knocked down. It is necessary to hollow out the cement in such a way as not to touch other pipes and not to spoil the contour completely. After the main line has already been repaired, it needs to be poured in. In this case, there are not so many ways to remove a problematic segment, and if it is constructive, then one is to cut and paste a new one. Accordingly, it is necessary to use fittings.
Do you risk blocking the trunk with a fitting connection? Probably not. Therefore, when there is a leak in the heating pipe under the floor, it will be rational to notice the line completely. Count how much work, materials, time spent will cost. As a result, it will be easier to disconnect the existing pipes in the floor screed and forget that they are there. And in return, you can lay electric infrared mats.
What materials can I use
If you do everything correctly and put high-quality heating pipes in the floor, the pros will block the minuses, and the circuit will last up to 50 years. Materials:
- polymer;
- metal plastic;
- copper.
As for copper, it can only be said that this is unreasonably expensive. What's the point of making a warm floor of copper heating pipes? There is no high temperature there, pressure too, the beauty of copper under the layer of solution does not matter. In addition, copper rusts, only this requires not air with water, but current or aluminum. Reacting with aluminum, copper oxidizes. Of course, you can easily avoid this, but it's more difficult to deal with eddy currents.
Metal-plastic is the most common material. This is a polymer pipe, which is reinforced with a layer of aluminum foil 0.2-0.25 mm. This five-layered product, in which between two layers of plastic is the reinforcing tape (plus two layers of glue). Reinforcement is necessary only in order to reduce the coefficient of linear expansion. Heating pipes in the floor under the screed have the property of increasing in length under the influence of high temperature. For mounting by a hidden method, the extension value should be as small as possible.
Metal-plastic pipes are made from:
- PP / AL / PP, elongation of 0.03 mm / m;
- REX / AL / PEX, elongation of 0.024 mm / m.
It is important that the routing of pipes under the screed is carried out from one piece, without breaks. It turns out that the mandatory requirement for materials is plasticity, so that it is possible to rotate the direction of the coolant without the use of hardware.
The best material to date for the pouring of heating pipes in the screed is cross-linked polyethylene (PEH), reinforced with ethylene vinyl alcohol (EVON).
Such products are marked as PEH / EVON / PEX and have the lowest coefficient of linear expansion among all plastic pipes. It is 0.021 mm / m. At the same time cross-linked polyethylene is very strong and elastic.
Methods of installing heating pipes in the floor
In this block we will consider two options:
- installation for pouring;
- installation under a wooden covering.
Filling installation
The method is suitable for both apartments and houses, even with wooden floors. The screed can also be poured on a wooden rough floor. In both cases, the algorithm of actions is the same:
- the waterproofing spreads;
- insulated heater;
- reinforcement net is laid;
- divorced and fixed pipes;
- a damper tape is attached;
- everything is filled with a layer of solution.
Now everything in order. The floor is covered with waterproofing to prevent moisture from getting from below, and also to avoid contact of wet solution with the wooden rough floor. Then the working surface is insulated. The optimal option for insulation is foam and its derivatives, such as foam foam. On the heater is laid a steel mesh, which will distribute the load in the layer of frozen solution. Without reinforcement the screed will crack.
There are special foam plastic mats, on the surface of which there are bumps. They are arranged in rows at regular intervals, like grid cells. Such mats are simply placed on the floor, they are wired and all of this is poured into the solution. Easy, fast and high quality. New technologies, however.
Diagram of the distribution of heating pipes in the floor of the "snail"
The distribution of heating pipes in the floor is carried out according to one of two schemes:
- snail;
- snake.
Scheme snail means the circular masonry of the contour from the walls to the center of the room. There are no sharp turns in the direction of circulation. The snake passes from one wall to the opposite one and on each segment the direction of water movement changes by 180 degrees. Not to say that this is very bad, but the first scheme is more preferable.
The contour must be fixed on the surface, while remembering that it increases in length. Therefore, the fastening should not be rigid, the trunk must be able to slide in it. As an option, you can use plastic clips that are drilled to the floor. It is easier to use ordinary clamps, with which the pipes are attached to the grid.
In fact, the warm floor is a layer of frozen solution, in which heating pipes are hidden. At the same time, the cement slab does not have a rigid connection not with the rough floor, nor with the walls. This large rectangular parallelepiped simply lies on the floor, periodically increasing and decreasing in volume.
In no event should we forget about the damper tape. This is a strip of foam polymer that glues around the perimeter of the room on the wall. The bottom edge must pass through the floor. The damper belt compensates for the expansion of the screed and does not allow the solution to become attached to the walls when pouring. The thickness of the screed above the heating pipes should be at least three centimeters, and only about seven centimeters. If the thickness of the layer is insufficient - it will crack, if too large - the surface temperature will be lower than expected.
Installation under a wooden covering
Heating pipes in the wooden floor
This method is not as effective as installing pipes in a screed, but is sometimes applied. First you need to create a buffer zone for laying heating pipes in a wooden floor. For this, logs (bars) are laid. Then, between the lags, pipes are bred. At the intersections of the contour and bars, grooves are cut out in wooden logs so that the entire trunk is in the same plane. Naturally, you need to provide insulation and waterproofing, so that all the heat goes up. On the logs neatly punctured finishing floor, so as not to break through the highway.
Now let's sum up. For the installation of heating pipes under the screed, cross-linked polyethylene products reinforced with ethylene vinyl alcohol, marking PEH / EVON / REX are the best. In the main there should be no breaks, everything is done from one segment. The floor must be insulated and waterproofed before casting. The thickness of the screed of the heating pipe must be at least three centimeters and not more than seven. On the perimeter of the room is glued a damper tape. The temperature in the system is about 40 degrees, and on the surface of the floor is about 30 degrees.
This article will be useful to those who were going to buy a new apartment and faced a new trend in the field of heating. Very often in new buildings began to move away from the traditional risers, supplying the coolant (hot water) to the batteries, and to use the laying of plastic pipes directly in the floor. Many people frighten this decision, since it is not known how long and practical it is. After all, there is no direct access to the pipes, check their condition and notice the leak in time - too. Article on the advantages and disadvantages of such a decision.
Immediately begin with the fact that the rejection of the risers and the distribution of pipes to radiators on the floor - absolutely justified and has a number of advantages. Do not be afraid of such heating systems. First, such a solution allows you to install a heat meter for heating and pay for heating, not according to the standard, but according to actual consumption. For example, when the apartment becomes hot or when you leave somewhere for a couple of weeks, you can block heating and not pay for it. At me, for example, there were months in the winter when for January or December in a receipt for heating there was an amount of one hundred rubles. With a conventional heating system on risers, it is technically impossible to install a heat meter. The fact is that in the case of wiring on the floor, there is only one central riser, which is located in the entrance, and from it the heating diverges into the apartments. That is, heating is a penthouse apartment. On the branch of the riser and put a heat meter. In the case where each battery has its own riser, it is not possible to install a heat meter, since there are several risers in the apartment and more importantly, the coolant flows from floor to floor, which is why it is impossible to calculate the amount of heat carrier spent for heating specific apartment. This also implies another significant plus distribution of heating pipes in the floor - if necessary, you or your neighbors from above (from below) can block the heating of your apartment only in case of an accident or repair without affecting others. While in the standard version you will have to cover the entire riser from the first to the last floor. Moreover, in order to block the riser, it is necessary to notify the managing company (Housing and Communal Services), while it is not necessary to do it with quarter-room heating - just go to the stairwell of your floor and close the tap.
Another significant advantage of the system is its maintainability. The service life of pipes made of heat-resistant plastic is twice the lifetime of conventional standard pipes in risers. In the case where replacement of the pipe is required, it is not necessary to open the floors. It is precisely this point that frightens many. The stereotype works: if the pipe is in the floor, then sooner or later it will be necessary to break this floor to replace the damaged section of the pipe. Not at all. All pipes passing in the floor are laid in a special corrugation (SNiP requirement), so that the replacement of the damaged pipe takes place without opening the floor.
Also, the advantages of such a heating system include the fact that pipes running in the floor heat the floor. Besides hot radiators, we get warm floors. Especially warming is felt if flooring was used as a floor covering (for example, in the kitchen). The floor heating, of course, is uneven - only where the pipes pass. But in fact for these "warm floors" in addition do not have to pay extra.
Well, the last, probably most obvious, advantage is that there are no risers in the apartment that must be hidden or put up with the fact that they will spoil the appearance of the room. After all, in the case of floor wiring feeding and discharging coolant pipes, we have in the room only the radiator itself, the pipes from which go to the floor.
The only drawback of the system is the possibility of its damage during some repair work. It is necessary to drill the floor with caution. Of course, when you are installing a floor covering, whether it is a laminate, tile or carpet - this is not required. But there are works related to the installation of sliding-door wardrobes, door threshold devices, when there is still a need to drill floor. But, firstly, the pipes lie at a certain depth (at least 4-5 cm), and secondly in the management company, you can be asked to give you a diagram of pipe routing in the floor, in order to know exactly where these pipes pass (such schemes should be there) . Well, thirdly, in the worst case, if you still damaged the pipe - its replacement will take place without opening the floor.
Also, many are afraid that a pipe laid under the floor can spontaneously leak. This is practically impossible, since before pouring the floor in the pipes, water is supplied under pressure of 12 atmospheres (working pressure during the heating season does not exceed 6 atmospheres). And only after checking the pipes for tightness the workers proceed to pour the floor. Another thing is how well the organization has observed the technology of works. In any case, the organization that carried out the work is responsible and perform repairs, if anything, at its own expense.
In my opinion, the advantages of a floor heating system are still significantly outweighed by a single minus, which I described a little higher. But the final choice is yours. I hope the article was useful for you. When copying an article or parts thereof, a link to the source and the author is required.