Which pipe goes to the warm floor. A variety of pipes for a water heating system

Many homeowners are increasingly equipping their homes with underfloor heating. Such designs allow you to abandon a large number of heating batteries and pipes, which often spoil the interior. In addition, walking warm floor- special pleasure. The advantages of a warm floor are appreciated by families with small children, especially during the period when the child begins to crawl. Arrangement of a warm floor in the hallway allows you to dry shoes in autumn-winter period. But most often, such a floor is arranged in the bathroom, because, leaving the bath or shower, it is especially comfortable to step on a warm tile.

For a long time, electric underfloor heating has been popular, but they significantly increase energy costs, and the wiring in many apartments cannot withstand such a load. Therefore, in recent times, homeowners prefer water system, for which it is enough buy, lay and connect them to the heating system.

Typically the following are used pipes for underfloor heating:

• Copper;
• metal-plastic;
• Polypropylene.

Copper pipes for underfloor heating they are distinguished by reliability, durability and high heat transfer, however, the cost of such pipes is quite high, so not all buyers can afford them.

An excellent option are pipes made of metal-plastic. They are very easy to assemble, withstand high temperatures etc. In addition, they are inexpensive, so they are available to everyone.

Polypropylene pipes are also relatively cheap and durable, but they must be rigidly fixed during installation to avoid bending the pipe.

For laying a warm floor, you will need not only pipes, but also other components:

1. Thermal insulation (foam or EPS);
2. Waterproofing (foil or film);
3. Damper film (laid along the walls);
4. Reinforcing mesh (used as a base);
5. Anchor brackets (for fixing pipes);
6. Collector (for heat distribution along the contours);
7. Mixing unit.

Buy pipes for a warm water floor and other accessories you can on the website website. All products of the company are of high quality and affordable price. A wide range of products presented in our catalog allows customers with different levels of income to make a choice. You can order goods by calling the numbers listed on the site. Our firm carries out delivery of the paid goods within Moscow and the Moscow region. In Russia, delivery is made with the help of a transport company.

Choosing a pipe for water-heated floors is enough difficult task. Quality and available material- this perfect option, however, not every manufacturing company will be able to offer such conditions. The cost of a product, as a rule, is influenced by the production technology, its diameter and the country of origin.

The pipe for a water-heated floor is available in several types:

• metal-plastic;
• copper;
• polymer (made of cross-linked polyethylene).

A copper pipe for a warm floor is used extremely rarely, since it has a low level of flexibility and cannot be laid at an appropriate distance from an adjacent turn of the product to evenly heat the room.

Cross-linked polyethylene (PEX) pipe is almost monolithic construction, which is based on a material of molecularly bonded polyethylene. Such a material, unlike standard polyethylene, contains transverse contacts between carbon molecular chains, which makes cross-linked polyethylene more high rigidity, strength and a high degree heat resistance. It is these qualities that make it possible to use this material for water heating systems.

The metal-plastic pipeline has a large number of varieties and classes. Basic hallmark metal-plastic from conventional pipes is the presence in them of a reinforcing layer made of an aluminum foil layer between the outer and inner polymer ball. The polymer layers can be made of different materials such as polypropylene (PP-R), polyethylene (PEHD, PE), cross-linked polyethylene, high temperature resistant polyethylene (PERT).

Metal pipes have best performance than traditional copper or plastic ones, however, they are highly dependent on the quality of the adhesive component, which the manufacturer often saves on.

In the case of PEX pipes, here their characteristics are directly dependent on the wall thickness of the material, the level of crosslinking of polyethylene and the method of processing oxygen-impermeable layers.

The following manufacturers are the most popular and trusted in the pipe market for underfloor heating: VALTEC, Rehau and Giacomini.

VALTEC pipes

The manufacturer of materials for VALTEC makes multilayer metal-plastic pipes, which are created on the basis of cross-linked polyethylene of medium degree of cross-linking (PEX-b). A special stitching technology gives the material increased heat resistance and resistance to mechanical damage. In addition, VALTEC (PEX) pipes have a low degree of hydraulic resistance, are not subject to corrosive processes, are resistant to scale and the negative effects of construction environments, and are also electrically inert.

Metal-plastic pipes VALTEC (PEX) have the ability to hold the shape given during installation, have high strength with a low coefficient of linear thermal elongation, so they are most often used for installation in cement or concrete screed.

The aluminum layer in VALTEC (PEX) metal-plastic pipes does not let oxygen molecules into the system, which is very important for heating equipment. Valtec PEX products have an anti-diffusion protective ball made of polyethylene (EVOH). They also contain strong adhesive joints layers in cross-linked polyethylene and metal-plastic PEX pipes. This ensures that there are no delaminations in VALTEC materials during repeated temperature changes.

Often the service life of such products lasts more than 50 years. Valtec pipes have a standard diameter of 1.6 cm and are widely used for integrated water floor heating systems in commercial or residential areas, as well as outdoor areas.

Rehau materials

The Rehau company (Rehau) occupies a leading position in the market among pipes for water heating systems made of polypropylene and cross-linked polyethylene. This is due to the fact that Rehau products (Rehau) have some unique properties and high quality standards. These characteristics include the following advantages of Rehau materials (Rehau):

• high strength;
• resistance to scale and corrosion;
• resistance to thermal shocks;
• human safety;
• have a "memory effect", that is, the ability to restore shape and all other parameters after deformation;
• product diameter 1.6 cm.

All these qualities Rehau pipes(Rehau) made of polypropylene or cross-linked polyethylene are especially valuable when arranging a water-heated floor, as they give the structure reliability, protection against leaks and uneven surface heating.

For underfloor heating water systems, Rehau (Rehau) purposefully produces a red Rautitan pipe. This is an advanced material that is not afraid of creases or kinks and has special flexibility, high level heat transfer and speed of laying when arranging a water-heated floor.

By making your choice in favor of Rehau pipes (Rehau), you can get high quality and reliability of operation of key elements of the water heating system.

Giacomini pipes

Pipes for water floor heating Italian company Giacomini are produced in cross-linked polyethylene using PEX-b technology using silane and a polymer compound percentage of more than 70%. The company uses PEX-b crosslinking, because increasing the crosslinking rate to 100% will reduce the flexibility of the product to such an extent that the material becomes brittle like glass and unsuitable for laying along the underfloor heating scheme.

Thanks to the use of specialized raw materials in the production of materials for underfloor heating, Giacomini pipes have a high degree of flexibility, which eliminates the overvoltage of the elements of the heating system during installation and after pouring the screed.

Another feature of Giacomini pipes is their smoothness. inner surface, thereby reducing the likelihood of build-up and scale.

All Giacomini materials are manufactured using an extrusion process with an EVOH outer layer that prevents oxygen from penetrating, thus preventing corrosion.

Giacomini pipes have a diameter of 1.6 cm and are packed in special coils up to 240 m long for easy installation of a water system in large rooms. The pipeline can be laid in one line and without breaks, which eliminates the possibility of leaks.

The period of proper functioning of Giacomini systems in conditions proper styling lasts over 50 years.

Calculation of pipeline for water heating systems

For the reliability and economy of the installation of the water system, it is necessary to calculate the quantity in advance necessary elements and length of pipes, as well as carefully plan the order of work.

The calculation of the required pipe length must be carried out depending on the design scheme of the warm floor (spiral, double snake, single snake or spiral with a central offset) and the size of the laying step. How large quantity heat should be released, the smaller the distance between adjacent tubes should be made. At the same time, the distance between them should be less than 30 cm in order to evenly distribute heat along the floor surface.

The calculation of the length of the pipeline does not need to include the space under the overall furniture or household appliances, under them the installation of a water system cannot be carried out. When laying pipes, you need to retreat more than 0.2 m from the walls, so this area is also not taken into account.

It is important to carry out the calculation and installation of water heated floor pipes clearly according to the scheme, and the duration of each circuit should be less than 70 m. If you need to exceed this limit, you must install the next circuit. This will provide protection against leaks during the operation of underfloor heating.

In this way right choice pipes and calculating their number will save money and mount a reliable underfloor heating water system that will last a long period of time without the need for repair.

The heating system, called "warm floor", is gaining great popularity among the owners of a private home. Someone chooses it as an additional heating method, laying the second circuit, someone as the main one.

The underfloor heating system is conditionally divided into two categories:

1. Electric type
2. water type

The first did not become widely in demand due to some of its shortcomings, including wear and tear and a heavy load on electrical network. Systems with a liquid heat carrier are more reliable and are not inferior in terms of performance characteristics. However, for their arrangement it is necessary to solve two main issues: how to choose suitable pipes for a warm water floor and how to lay them.

The choice of pipes for underfloor heating

IN high-rise buildings laying is not always possible. Such a system should be a separate heating circuit. Otherwise, the tenants of subsequent apartments will receive less heat. Getting started, you need to get permission from the utilities.

In a private house, the owner independently decides how it will function. Having bought necessary equipment, it remains only to choose one of the proposed modern market pipe types:

1. metal-plastic
2. Cross-linked polyethylene
3. Polypropylene

metal-plastic

One of the most common pipes for warm water floors are metal-plastic products. They have several significant benefits:

• Long service life
• Able to resist various loads
• Do not lose their structure during heating
• A light weight

If we consider metal-plastic pipe in the context, it is an overlay of five layers at once:

1. Inside and outside– polyethylene protective covering
2. middle layer – aluminium foil
3. To ensure that the resulting cake does not delaminate, use a special adhesive

The thickness of the foil layer can reach 2.5 mm, depending on the diameter of the purchased product. After wrapping, it is welded with an overlap or butt. The outer layer may be various types polyethylene, however, an important criterion for it is high density. The inner layer is always extruded from cross-linked polyethylene.

This structure is one of the the most important properties metal-plastic products - the ability to maintain the accepted shape after bending. This is an important criterion, since warm floors are often laid in the form of a spiral or snake.

Various fittings and other pipe fittings are used as connections.

The average price on the market is 1-2 USD. e. per meter.

Cross-linked polyethylene

Worthy competition to metal-plastic models are pipes for a warm water floor, made from cross-linked polyethylene. The market is rich in products with different crosslink density, but the most optimal value lies in the range of 65-80%.

Video demonstration

Polyethylene pipes can be processed in several ways:

• Electron irradiation in magnetic fields– cross-link density reaches 60%
• Peroxide - cross-link density reaches 75%
• Silane (gas) - cross-link density reaches 65%

The higher the density, the greater the cost of such products. Some of the models may have an oxygen barrier as a middle layer - they are best suited for underfloor heating. disadvantage, repulsive to many buyers, is very high price.

Connecting XLPE pipes takes a matter of minutes:

1. A special ring is put on one end of the pipe
2. It is then expanded using a specialized tool
3. A fitting is installed inside and the upper ring is clamped

The average cost in the market is $4-5 per meter.

Polypropylene

The constant improvement of plastic products has led to the emergence. Due to their technical and operational advantages, they have become in demand. They are often used for arranging heating systems.

but they are practically not used for insulated floors. The reason lies in the large bending radius, which is about 8 diameters. For example, for a product with a diameter of 20 mm minimum distance between two parallel sections will immediately be 320 mm.

The average cost in the market is $1.5-2 per meter.

The most significant properties of copper are durability and high heat transfer. This led to the widespread use of such products in modern systems warm floor. This material much more reliable than all of the above.

However, there are negative sides that must be taken into account:

• Pipe laying requires special equipment and certain skills
• Copper is a metal and is therefore prone to corrosion.

A pipe for a warm water floor made of copper is connected to each other using brass fittings. However, when interacting with other metals, the corrosion process only accelerates. Years later, wandering dots may appear stitching the product.

To increase the life of copper inside the floor, it is necessary to wrap it in a waterproofing non-combustible layer. This will protect the pipe from contact with other materials, extending its service life.

The average cost in the market is $7-15 per kilogram.

Laying and calculation methods

In order to fully determine the cost of pipes for a warm water floor, it is necessary to determine their exact number. First, choose one of two laying methods:

1. Spiral
2. snake

Spiral the most common, as it allows you to more evenly distribute heat throughout the room. TO minimum value the number of sharp bends of pipes, on which there is a loss of useful energy, is reduced. Elastic pipes will need additional fixation. It becomes possible to use polypropylene products.

Lay pipes with a snake much easier, but it is more difficult to achieve uniform heating of the room. This option is characterized by the presence of areas with sharp bends.

Having chosen one of the methods, it is necessary to apply the laying scheme on graph paper in compliance with the scale. If the room has furniture located exclusively in one place, you can not lay it under it.

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When calculating, it is necessary to take into account a number of rules:

1. Pipes should be placed relative to each other in increments of 15-30 cm, it all depends on the power heating system and purpose of underfloor heating
2. From the walls, the indentation is made equal to 15-20 cm
3. Labor with a diameter of 15 mm can warm up the space in both directions up to 15 cm

The maximum length of one circuit should not exceed 50 m. If the room is too large, it is divided into sections and each one has its own circuit.

Laying methods

The last question to be resolved before starting work is how the installation will be done. Choose one of the following options:

• Stacking products in cement screed
• Modular system of their tree
• Polystyrene pads

IN one-story houses the most common is the method of laying a pipe for a warm water floor in a concrete screed. Products are fixed with clamps, covered with a waterproofing layer and poured with a solution.

For wooden buildings the best option becomes modular system from wood. On the rough surface fit chipboard sheets or boards in which cavities for pipes are cut. The bars under them should be located at a distance of less than 50 cm. Heat-insulating and waterproofing layers are laid in the space between them.

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IN apartment buildings when it is impossible to create an artificial load on the floors, special polystyrene linings are used. In the plates sold on the market, there are already places for placing and fixing pipes. located inside aluminum frame ensures uniform distribution of heat over the surface. To lay the finish coat, it is enough to cover the warm floor with GVL or foamed polyethylene.

In custody

Having purchased pipes for a warm water floor and choosing the most suitable installation method, you can not be afraid to get to work. Difficulties and unforeseen situations should not arise. But before equipping the finish coat, it is necessary to let the coolant go around the circuit and make sure that it circulates freely, gives off heat and does not leak anywhere.