Pipes For Water Underfloor Heating: Types, Best Options, Brand Reviews

When planning a heating system, homeowners increasingly decide to install a heating water circuit. The option is economical and versatile - it can be used for heating the entire house or as a secondary heat source.

It is used as the main, backup or additional source of heating.

For maximum reliability and efficiency, it is necessary to choose the right pipes for floor heating by comparing the characteristics of each variant.

In our material we will carefully consider the requirements for floor heating installations, we will also tell you how to choose the pipes and calculate their necessary amount.

Water circuit requirements

  • Water circuit requirements
    • Stable material
    • High strength
    • Low expansion coefficient and good thermal conductivity
    • Optimal weight, length and elasticity index
  • A variety of pipes: Evaluation of technical characteristics
    • Metalloplastic - practicality and reliability
    • Polyethylene-based products
    • Polypropylene - economy at a disadvantage
    • Copper piping - durability and efficiency
    • Combining stainless steel and corrugated
  • The optimum diameter of pipe fittings
  • How to calculate the required number of pipes?
  • Which brand should I choose?
  • Conclusions and a helpful video on the subject

The requirements for the water circuit

floor heating is a kind of heating system. Therefore, the design, calculation and installation is carried out according to standard regulations. There is no uniform guideline for water flooring - the rules applying to the particular process are followed.

The heating circuit is operated under rather harsh conditions. On the pipes from the inside is constantly pressurized by the circulating coolant, and from the outside the coil is subjected to impressive loads: the weight of the screed, flooring, furniture and the tenants themselves. We should not forget the thermal impact.

Pipes for water underfloor heating: types, best options, brand reviews

Water underfloor heating is in great demand. It perfectly replaces electric alternatives, which are very energy consuming and place a severe extra burden on the wiring

Not all materials are suitable for these specific conditions.

Most water systems require cement or concrete grouting, which makes the heating branch revision and repairs impossible. Any leakage is a reason to completely dismantle the floor and replace it.

Pipes for water underfloor heating: types, best options, brand reviews

Basic requirements are laid down in documents: SNIP 2.03.13-88 \"Floors\", SP 41-109-2005/SP 41-102-98 on the design of heating systems using polyethylene and metal pipes respectively. According to the situation it is allowed to follow the rules established by the manufacturer of the pipe fittings

The quality of the laid pipes should not cause doubts, because the system is set up with the expectation of long-term operation. Only products that fulfil the basic requirements are suitable for use.

Stability of material

Material must react unscathed against constant contact with the liquid heat carrier - development of corrosion and deposit of deposits on the inner walls of the system is not allowed.

The lifetime of the circuit depends on this nuance. High-quality materials easily tolerate high temperatures and have a smooth internal coating that does not accumulate lime deposits.

Pipes for water underfloor heating: types, best options, brand reviews

The floor heating works at a relatively low fluid temperature (up to 55 degrees). In spite of this, it heats the area fully and evenly, saving about 30% of energy

This requirement also implies these characteristics:

  1. Resistance to regular temperature variations. Optimally, if the material is designed to withstand a temperature of +90°C or higher.
  2. Chemical inertness. It is impossible to foresee the quality of coolant for several years ahead, that is why it is better to use pipes that are not afraid of impurities, suspensions and interact minimally with different reagents.
  3. Protection against oxygen. The most durable are pipe fittings with a \"gas barrier\".
The separation layer prevents the ingress of oxygen into the mains by slowing down the diffusion destructive processes in the heating circuit.

High strength

The circuit must retain its integrity even in case of unexpected water hammer and system surges.

High pressure acts on the pipes: the heating medium presses on the inside and the screed on the outside. In case of possible critical drops, they must be designed for 10 bar.

The floor heating \"pie\" with a concrete screed places a considerable load on the structural floors of the room. To avoid aggravating the situation, heavy metal products should be avoided.

Pipes for water underfloor heating: types, best options, brand reviews

The use of welded pipe fittings in concealed heating circuits is prohibited whatever the seam type - longitudinal or spiral

Low expansion factor and good thermal conductivity

Low temperature increase results in volume increase which can damage screed and decorative coating. The allowable value of thermal expansion of pipes is up to 0,25 mm/mK.

High thermal conductivity is encouraged. The higher the heat transfer coefficient, the higher the efficiency of the floor heating.

The heating loop should ideally be in one piece - without fused sections. Welded seams at bends and tees are potential trouble spots for breaks and leaks. This means that the pipe must have an adequate length for laying an unbroken coil.

Pipes for water underfloor heating: types, best options, brand reviews

The photo is an unfortunate example of creating a water loop from polypropylene pipes. Such \"virtuoso\" execution is not acceptable in the arrangement of a warm floor

The heating main must be smooth from the inside so as not to provoke a loss of head. In addition to maintaining hydraulic resistance, a smooth finish reduces the noise effect of the heat transfer medium.

Optimal weight, length and elasticity index

In addition to all of the above, a number of factors should not be overlooked to check whether the unit meets standard specifications:

  1. Optimal weight. Heavy steel products should not be used in an in-floor heating installation. They overload the floors and are strongly discouraged by building regulations in closed systems.
  2. Ample length. Any connections in the loop made with couplings, welding, or fittings are considered a potential area of leakage and blockage. The necessary length of pipes is determined by special calculations. The material is usually available in coils and sold by the meter.
  3. Flexibility and elasticity. Constructions that bend well by hand will not crack or break and allow you to easily achieve the desired curvilinear shape with bends of a suitable radius.

The most common diameters are 16, 18 and 20 mm. When choosing pipes for the arrangement of a warm water floor, one thing should be taken into account: a smaller diameter will increase the resistance of the fluid and, accordingly, reduce the efficiency of heat exchange.

Under increasing the index, it is necessary to increase the thickness of the screed. Such manipulation will increase the load on the floor and raise the floor level, which is not acceptable for every room.

Pipes for water underfloor heating: types, best options, brand reviews

Whether or not the coil arrangement, laying the water circuit implies bends. The pipe must be elastic, maintain strength along the whole length of the line and hold the given shape

The diameter of the product affects the limit length of the circuit.

The larger the meterage, the more evident the risk of exceeding the circulating pump capacity and of causing liquid stagnation on site becomes. and on how to correctly calculate the number of pipes for underfloor heating, read this material.

Pipes for water underfloor heating: types, best options, brand reviews

When buying the pipe, the diameter is selected taking into account the maximum possible length of the system in a particular case. Approximate average values are as follows: 16 mm - 60-70 m; 20 mm - 80-90 m; 26 mm - 100-120 m

A variety of pipes: evaluation of technical characteristics

With reference to the listed requirements, let us conduct a comparative analysis of the most popular products for arrangement of the heating water circuit.

Manufacturers make pipes from many different materials. Among them there are budget and expensive models. All of them have their own advantages, disadvantages and limitations. The material chosen determines how often the need to open up the floor for repairs will arise.

Metalloplastic - practicality and reliability

Metalloplastic floor heating is installed in every 2-3 cases. This is due to its affordable price and good technical characteristics. The composite material is made of a thin aluminium strip that is ultrasonically welded butt or overlap.

The joining of the two materials achieved high technical characteristics. Composite pipes have a complex 5-layer structure where each element is responsible for a specific task.

Pipes for water underfloor heating: types, best options, brand reviews

The outer coating is a strong plastic material protecting the circuit from damage. The plastic reduces thermal conductivity, thus reducing the intensity of condensation

An aluminium sheath in the middle increases the stiffness of the product, compensates for thermal expansion of the polymer and prevents the ingress of air from the environment. An inner polyethylene layer provides smoothness and protection against corrosion.

Polyethylene layers are fixed on the inside and outside with special adhesives. The adhesive is responsible for fixing all layers together to form a single structure. It is the quality of the glue that largely determines the longevity of the product.

Pipes for water underfloor heating: types, best options, brand reviews

To be sure of proper performance, the pipe should be heated to 90° C and look at the cut. A delaminated edge of a metal-plastic cut is a sign of poor quality glue

Metal plastic products can withstand up to 110 degrees when heated without changing their original appearance.

Thanks to the bend radius of the pipes, coils can be stacked more frequently during installation, thus achieving greater heat transfer from the system.

Pipes for water underfloor heating: types, best options, brand reviews

The maximum bend radius of metal plastic products is equal to the outside diameter multiplied by 8. They are very light in weight, can be quickly and easily bent to the required angle and are suitable for all types of installations - double helix, snail, coil

The aluminium layer ensures good thermal conductivity and the polymer part increases resistance to damage and deposit build-up from substances contained in water and to aggressive media. The material walls are well insulated so that the sound of the heat carrier movement is not carried into the room.

Composite pipes are excellent for underfloor heating as they meet a number of basic requirements.

Main advantages are:

  • Significant thermal expansion;
  • corrosion resistance, chemical inertness;
  • high temperature tolerance;
  • oxygen protection;
  • good flexibility, easy installation;
  • multilayer - for silent transport of heating fluid.

Disadvantages include the detrimental effects of sudden temperature changes on the inner surface of the pipes. As for bending, special care must be taken. Repeated bending and unacceptable twisting may damage the aluminium layers.

Pipes for water underfloor heating: types, best options, brand reviews

The table shows the general characteristics for different modifications of metal-plastic products. For the water circuit, composite pipes where heat-resistant or cross-linked polyethylene is used as polymer

Metalloplastic coils will do the job perfectly. The main thing - do not try to save money on the purchase of pipe fittings of dubious quality. It is better to play it safe and choose products by reliable manufacturers: Rehau, Henco, Valtec.

Polyethylene based products

The water circuit is very often made of polyethylene pipes for floor heating.

Two categories of polymer products are used:

  • Polyethylene cross-linked pipes (REX or SPE);
  • Heat-resistant or linear PE (PE-RT or LPE) fittings.

These two options have good physical and chemical properties and are direct competitors of metal-plastic in the matter of \"price/quality\" ratio. Let's understand in detail the distinguishing features of each material.

Cross-linked polyethylene

Pipes made from advanced high pressure compressed polyethylene have an increased density compared to the conventional material. Due to innovative technologies used in production, hydrocarbon molecules are bonded together, giving PEX products unique properties.

The material is not afraid of temperature surges, does not deteriorate over time and is resistant to external influences. To a large extent, its quality and durability is determined by the degree and method of crosslinking.

The optimum value for a warm floor is 65-80 percent crosslinking density. The higher this value, the higher the price of the product. An insufficient degree has a negative impact on performance.

Polymer properties are a consequence of its structural filling. In conventional polyethylene, the molecular threads are in free \"float\". The absence of bonds explains the vulnerability of the material to thermal stress - it begins to melt.

Pipes for water underfloor heating: types, best options, brand reviews

In the cross-linked modification, the longitudinal bonds are supplemented by cross-links. The three-dimensional structure increases the molecular density, greatly improving the strength and stability of polyethylene

The crosslinking technology has endowed the polymer with a number of distinctive characteristics:

  • high compressive/tensile strength - excellent ductility and softness;
  • molecular memory that returns to its original appearance after heating;
  • unresponsive to acids, most organic solvents, alkalis;
  • excellent dielectric properties;
  • normal performance at 0-95 degrees;
  • good tolerance to pressure fluctuations;
  • free sensitivity to chemicals, fungi, bacteria;
  • preserving physical properties in rapidly changing environment;
  • safe for health, avoiding the release of harmful compounds.

In addition, the material has high melting point (150 degrees) and burning point (400 degrees). Despite the recommended operating range of 0-95, cross-linked polyethylene pipes can maintain strength from -50 to +150 degrees. However, it is worth bearing in mind that regular increased loads reduce the service life of the products.

PEX polyethylene has good flexibility - the smallest loop radius is 5 diameters. This is sufficient for any loop layout.

Pipes for water underfloor heating: types, best options, brand reviews

PEX cross-linked polyethylene pipes bend well in any direction. The bent material is capable of restoring its original shape after exposure to high temperatures, which is why it is recommended to be carefully mounted on a backing or special fittings

Suppliers produce pipes in voluminous coils holding up to 600 metres. This is very convenient for installation: they can easily be laid in a single loop without using splices.

Because of the particular elasticity of the units, they should be fixed with additional fasteners that help avoid unwinding.

Pipes for water underfloor heating: types, best options, brand reviews

Crosslinked polyethylene easily restores its shape. In order to prevent the coil from unravelling it must be stapled or placed on a base with bosses

Weaknesses of PEX polymers: UV instability and destructive effect of oxygen which has penetrated the polyethylene structure. To solve the latter problem, some manufacturers produce multilayer pipes with an anti-diffusion barrier.

Molecular mesh technique determines the density of side bonds and thus the strength of the finished product.

Depending on the cross-linking technique, four groups of pipe fittings are distinguished according to the method of joining the molecules:

  • peroxide - PEX-a;
  • silane - PEX-b;
  • radiation - PEX-c;
  • azote - PEX-d.

The most reliable but also the most expensive option are the models marked PEX-a. Slightly easier and more affordable would be PEX-b products. But let's look at all these 4 types separately.

PEX-a.The chemical method of bond formation is fixation by organic peroxides. The reaction takes place at high temperature in molten polyethylene.

Pipes for water underfloor heating: types, best options, brand reviews

Chemical interaction pattern. A chaotic distribution of connecting \"stitches\" throughout the melt volume is observed. Depending on the amount of peroxide the crosslinking degree reaches 70-80%

PEX-a features:

  • Uniform crosslinking;
  • Stiffness and strength of pipe fittings;
  • High cost.

PEX-b.A more affordable alternative method of production of modified polyethylene using organosilanes. The technology provides a crosslinking degree of up to 65%. An interesting feature is that there is a constant sluggish process in the PEX-b polymer. Over time the material \"shrinks\" and becomes stiffer. In the structure of metal plastic b-polymer in tandem with low-quality adhesive can lead to delamination.

For domestic use, only organosilane polyethylene pipes PEX-b, which have a hygienic certificate. Products based on silicon hydrocarbons are prohibited for use in heating and water supply.

PEX-c.The technology consists of running a mass of polyethylene through an electron gas pedal where the polymer is exposed to gamma rays. Unscrupulous manufacturers irradiate with radioactive cobalt to make the process cheaper, raising questions about the safety of using such pipes.

Pipes for water underfloor heating: types, best options, brand reviews

Polyethylene is irradiated already after forming, so it is difficult to achieve uniform bonds. In some European countries irradiation pipe production is prohibited

The cross linking percentage of PEX-c polyethylene is up to - 60%. The material is used as an outer/inner sheath for metal plastic pipes. However even with reinforcement, such products are not recommended for laying water circuits.

PEX-d.Nitriding cross-linking is a chemical method using nitrogen radicals, the bond density reaches 70%. Rarely used due to limited availability - the technology requires certain reaction conditions.

Thermostable polyethylene

The material was created as an alternative to cross-linked polymer which apart from its high technical qualities is labour intensive to produce and has certain limitations in use - it cannot be welded and recycled.

Buyers often mistake PEX pipes for heat resistant polyethylene. It should be understood that they are different materials. Cross-linked polyethylene outperforms its counterpart in terms of durability, strength and resistance to aggressive conditions.

Pipes for water underfloor heating: types, best options, brand reviews

PEX-RT pipes are a technical breakthrough. Numerous intermolecular bonds are already embedded in the feedstock. Improved technology with catalysts allows the control of the distribution of the side bonds

The heat-resistant polymer heating circuit is differentiated from the PEX-polyethylene:

  • the material is not afraid of negative temperatures - the pipes retain their integrity when the water in the system freezes;
  • the coil is repairable;
  • noiseless underfloor heating operation, no creaking when walking around;
  • the maximum allowable peak temperature is 125°C;
  • the pipes can be connected by fittings and welding.

PE-RT pipes are produced mainly with reinforcement or a diffusion barrier. Both are great for a water floor. To determine which pipe is best for a warm water floor in a specific case, it is necessary to assess the anticipated load on the system.

If a \"wet\" pour and a heavy finish (tile) is used, then the PERT/Al/PERT metal pipe circuit is suitable.

Pipes for water underfloor heating: types, best options, brand reviews

For the \"dry\" laying method, heat resistant polyethylene pipe with an EVOH gas barrier or an air tight OXYDEX

Polypropylene - economy not good

For several reasons, polypropylene is not suitable for creating a warm floor:

  1. High linear expansion. Fittings poured into the screed, at high temperatures will constantly be subjected to internal stress, which over time will adversely affect the pipes themselves and the floor covering. The situation is not particularly improved by fiberglass reinforcement or metallized layer.
  2. Lack of flexibility.Polypropylene is a rigid material, the permissible bending radius is about 9 rebar diameters. This requires a larger pitch between branches, which is not always acceptable. Some craftsmen resort to welding the joints of the circuit, repeatedly increasing the risk of leaks. For example, if the diameter of a polypropylene pipe is 16 mm, the minimum spacing of the segments for it is 128 mm. This distance does not always fully provide the necessary heat output.
  3. Low thermal conductivity.Polypropylene will not provide proper heat transfer from the heating medium to the floor and therefore the heating system will be ineffective.

The main argument for PP pipe is the low cost. However, in this case the savings are not worthwhile.

Pipes for water underfloor heating: types, best options, brand reviews

To obtain a comfortable floor temperature, more heat will be needed and thus the costs of heating the heating medium will increase

But polypropylene has very attractive features: low specific weight, easy installation, environmentally friendly, corrosion resistant, plasticity and sound proofing.

These properties are enough to equip a water system or classic heating branch with radiators. The products become extra strong, almost monolithic, after heat welding with a soldering iron. They should only be taken for small rooms.

Copper soldering - durability and efficiency

Copper heating pipes are characterized by maximum durability and excellent thermal conductivity. Today, many new technologies are being developed, but copper retains its position and does not lose relevance.

Bacteria do not breed on its surface, it is not afraid of corrosion processes inherent to the wet environment created by the liquid coolant, it withstands almost any mechanical action.

Pipes for water underfloor heating: types, best options, brand reviews

It works well in both low and high temperature conditions. Copper pipes do not crack, burst or melt between -100 and +250 degrees. If construction requirements and manufacturer's recommendations are followed, they will easily last at least 50 years, which will pay back the initial cost

The positive qualities dominate the arsenal of copper piping features:

  • lime resistance, impervious to corrosion;
  • complete impermeability to gases;
  • stability and durability of the matter;
  • mechanical strength - pipes can tolerate water hammer, temperature surges and pressure within 400 Atm without problems;
  • high thermal conductivity, ensuring heating system efficiency.

Copper circuits can bend at small radii. Such pipes are suitable for any method of underfloor heating installation  regardless of the given coil shape.

Pipes for water underfloor heating: types, best options, brand reviews

Copper products are environmentally friendly, do not release toxic substances during operation, are chemically neutral and 100% recyclable

Copper also has several drawbacks. The most tangible of them is the high capital investment costs at the floor construction stage. To install the coil you need special equipment and connectors made of brass.

In addition, the material is sensitive to water quality. If it is too hard or acidic it triggers negative electrochemical processes, reducing the operating time several times over.

A last limitation is the difficulty of installation. A machine or pipe bender is required to perform it. Since this equipment is expensive, it is necessary to invite a team of specialists to install the floor heating.

Combination of stainless steel and corrugated

Somewhat recently, stainless steel corrugated pipes started to be installed in the floor heating. Thanks to the symbiosis of the technological effectiveness of corrugations and the rigidity of the metal, it has been possible to obtain a flexible and solid channel for the circulation of the heating medium.

The design features of the metal corrugated tube give the heat loop a number of advantages:

  • variability of the bend radius - any coil configuration can be set manually;
  • preservation of the flow capacity at the bend;
  • corrosion resistance of stainless steel;
  • high thermal conductivity;
  • low system weight and low noise floor;
  • temperature range -50°C to +110°C;
  • tensile pressure at +20°C  210 bar.

In essence, stainless corrugation has the full set of required qualities in addition to being more affordable relative to copper products.

Pipes for water underfloor heating: types, best options, brand reviews

Disadvantages of stainless steel pipes: roughness of the inner wall coating, vulnerability of steel to some chemical elements. To protect the metal from detrimental effects, a polymer jacket is used

Optimal diameter of pipe fittings

When selecting the cross section of the circuit, the length of the heating branch and the heat output of the material must be considered. The most frequently used diameters are 16, 20, 25 mm.

Needs to determine the optimum size:

  • Water resistance increases with decreasing diameter and heat transfer intensity decreases;
  • Extending the pipe cross section must be accompanied by increasing the screed thickness - this results in raising the floor level and increasing the floor floor load.

If the length and diameter of the heating circuit do not match, the hydraulic resistance may exceed the technical possibilities of the pumping equipment.

Pipes for water underfloor heating: types, best options, brand reviews

The table shows the recommended limits for coil length and pipe cross section. If the length is not long enough to cover the whole area, several heating coils must be installed

The thermal conductivity of the materials must also be taken into consideration. When laying a coil of copper or metal-plastic allowed to use pipe fittings small diameter - 14, 16 mm. Installation of polymer products - 20, 25 mm.

We also recommend to read our other article, where we reviewed in detail the options for pipes for a warm floor. Read on for more details.

How to calculate the necessary amount of pipes?

After choosing the optimal type of pipes, you should not rush into the purchase. The first thing to do is to calculate how much material is needed in order to lay a good quality floor heating.

Pipes for water underfloor heating: types, best options, brand reviews

The spiral laying variant spreads the heat evenly over the whole surface due to a rational arrangement of the coils. There are almost no sharp bends in the scheme, which removes the restriction on the use of pipes with a large bending radius

To make an accurate calculation, a laying plan drawn on millimetre paper is helpful. It is transferred to the plan of the room in scale, which shows the available appliances and large-sized furniture. The heating contour is drawn in a free space section.

There are two basic laying schemes:

  1. Spiral. The pipe is laid in coils at double intervals, which gradually go to the middle of the room, constantly repeating the contour of the perimeter. When they reach the central point, they return to the manifold.
  2. Snake. The pipe runs along the entire perimeter and then parallel to the wall. The segments meet at the starting point. In this scheme the zone closest to the tapping may be heated more intensely than the furthest segment.
  3. Double helixis most often used in rooms of complex shape where it is necessary to have a specific heating intensity.

The recommended length of pipe in one loop should not exceed 80 metres. Otherwise, the heating medium will cool down, reducing heating efficiency.

If the room is too large, it is advisable to divide it into separate sectors. The boundary interval between adjacent lines for uniform heating is no more than 35 centimeters - the interval should be reduced in places of high heat loss. A 15-20 cm distance to the walls must also be taken into account.

Pipes for water underfloor heating: types, best options, brand reviews

If you are not sure of your possibilities it is better to ask for a proper engineering design, selection and installation from professionals. It may involve additional costs but it more than pays for itself in a short time

When the drawing is ready, you can start the calculations. It's very simple: first the total length of the contours is measured, then the resulting value is multiplied by the scale. It is better to add a few spare meters to the final figure.

Which brand should I prefer?

To make the right choice and understand which pipe for a warm water floor is best, besides evaluating the physical properties of the materials, you should also pay attention to the name of the manufacturer.

Many companies offer a complete underfloor heating system including a pump and mixer unit, pipe fittings and accessories such as power supply, temperature sensors, thermostat, etc.

Pipes for water underfloor heating: types, best options, brand reviews

Specialists recommend assembling the floor heating system from components of one brand - this makes it easier to achieve the required density of connections

It is better to stop at the brands that have already positively proven themselves in the construction market. Purchase of reliable products will be a guarantee of proper and effective operation of the equipment.

Today buyers distinguish the following pipe manufacturers:

  1. Rehau (Germany). The priority is thermal systems made of PEX-polyethylene with noise absorption and anti-oxygen barrier. Warranty on products - 10 years. Under normal operating conditions (temperature of heat carrier 60°C) lifetime - over half a century. Of pipes are equipped with silent design, have high thermal resistance and thermal insulation. They are durable, elastic, do not burst when stressed, and can withstand up to 100 degrees in emergency situations. Rehau brand products connected by sliding sleeves are of record popularity among the buyers - with their participation the floor heating systems of the most various configurations are mounted.
  2. Sanext (Italy).PEX-polymer pipes of multilayer structure - include protection against noise and gas penetration. Guaranteed for 10 years. The company equips pipes for floor heating with a reinforced anti-oxygen barrier, applies a three-layer coating that reduces noise levels. The minimum diameter of the products is 10 cm. The company claims to have 50 years of reliable service.
  3. Uponor (Finland).Comprehensive underfloor heating solutions. Available in polyethylene and metal-plastic fittings in various fillings and all sizes. Pipes of this brand do not reduce the inner diameter due to corrosion and overgrowth, are resistant to chemical additives in water. Products do not lose their characteristics in contact with construction materials - concrete, lime, gypsum mortar. Additional layers of protection against mechanical stress and oxygen penetration into the system.
  4. Emmeti (Italy).The producer strictly controls all the steps of the technological process, the manufacturing method is ISO certified PEX-polyethylene, metal plastic pipes available.
  5. Valtec (Italy/Russia). Fittings adapted to non-standard conditions. The company has developed standard kits for specific room parameters and complete solutions. Prefabricated sets are easy to install on their own. Pipes of this brand conduct heat well, are light and easy to install, allow for different circuit sizes without unnecessary elements. The products work well in aggressive environments and do not succumb to the destructive effects of chemicals.
  6. Aquatherm (Germany). German factory producing polyethylene pipes made by the extrusion method. Finished products are characterized by high elasticity and small bending radius. The products are not prone to temperature aging, corrosion, oxidation. They function at pressures up to 10 bar and provide good soundproofing. Accessories for heating systems Aquatherm brand occupy a rating position on the technical characteristics and quality. Even with a small thickness, the products withstand maximum temperatures and pressures.

The leading producers of polymer and composite pipes are: Henco Induetries (Belgium), Oventrop (Germany), Kermi (Germany), Purmo (Finland), Termotech (Sweden), Neptun (Russia). Hydrosta (South Korea) and KME (Germany), corrugated stainless pipes - Kofulso (South Korea), Neptun (Russia).

We also recommend you to read articles where we explain which floor heating one should choose under the certain floor covering:

  1. Laminate floor heating.
  2. Tile floor heating.
  3. Linoleum floor heating.
  4. Linoleum floor heating.

Conclusions and useful video on the topic

The video overview deals in detail with the structural features, physical and performance properties of the different types of pipe fittings. Attention is paid to the quality assessment of metal plastic products and PEX polymers:

What are the parameters to consider when choosing pipe products for a heating circuit:

Tips for choosing underfloor heating equipment:

Video on how to choose a product diameter:

Strength test for different types of pipes:

If the budget allows, the ideal solution is to install copper pipe flooring. However, you don't have to overpay for the excessive strength of the metal. Make a reliable, durable and efficient heating system will turn out of metal-plastic fittings based on heat-resistant polyethylene. Decent, more budget-friendly alternative - PEX-pipes.

The quality of materials and components will depend on the efficiency of water underfloor heating. The right choice allows you to equip the most economical, comfortable and aesthetic heating system in the house.

We hope our material helped you to determine the choice of pipes for the underfloor heating. If you still have questions, you can ask them in the box below.


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