What heating pipes can be put in a screed?

Selecting the ideal heating system for your house is essential to preserving efficiency and comfort. Choosing the right kind of heating pipes to put in your floor screed is a crucial decision. These pipes are in charge of heating your house in the winter by dispersing steam or hot water throughout it. Making an informed decision that fits your needs and budget can be facilitated by being aware of the options available.

PEX (cross-linked polyethylene) is a popular option for heating pipes in a screed. PEX pipes are a common choice for underfloor heating systems because they are strong, flexible, and corrosion-resistant. Their adaptability makes it simpler to install them in confined areas and around obstructions, which eliminates the need for joints and possible weak points. PEX pipes also have a reputation for having outstanding thermal conductivity, which guarantees effective heat transfer throughout your house.

PERT (Polyethylene of Raised Temperature Resistance) pipes are an additional choice to take into account. PERT pipes are flexible and durable, just like PEX pipes, but they are made especially to withstand higher temperatures. Because of this, they can be used in hydronic heating systems, which allow for higher water temperatures for better efficiency. PERT pipes have a long lifespan with little maintenance because they are resistant to chemicals and corrosion.

Copper pipes can be installed inside a screed and are a conventional option for heating systems. Excellent heat conduction qualities in copper enable quick heating and uniform warmth distribution. Furthermore, copper is a dependable material for long-term use due to its exceptional durability and corrosion resistance. However, installing copper pipes may cost more than other materials and call for specialized labor.

Lastly, composite pipes combine flexibility and thermal conductivity. Typically, they are made of layers of various materials, like PEX and aluminum. These pipes are a popular option for underfloor heating systems because they are lightweight and simple to install. Improved heat transfer is provided by the aluminum layer, and corrosion resistance and durability are guaranteed by the outer PEX layer.

Type of Heating Pipes Suitable for Screed Installation?
Copper Pipes Yes
PEX Pipes Yes

Reasons for the use of screed

There are two types of pipe heating systems in a room: open and closed. When the pipes are concealed in the screed and concrete is poured, a closed technique is frequently employed. These kinds of things are done for the following reasons:

  • Aesthetic appearance. The pipes hidden in the screed make the room more neat and spacious;
  • There is no risk of burns, since the air temperature in the heating device is high, there is a risk of injuries;
  • the life of the pipes is increased. Since there is no damage during operation;
  • communications do not accumulate dust in the room;
  • The room retains heat for a long period;

In the event of a breakdown, accessing the damaged area requires pounding the wall. The labor is intricate and demands monetary outlays.

We’ll go into the possibilities for installing heating pipes inside a screed in our article "What heating pipes can be put in a screed." There are a number of pipe types that can be embedded in screed to support underfloor heating systems; each has pros and cons of its own. We will examine popular choices such as PEX, PEX-AL-PEX, and PERT pipes, talking about their ease of installation, durability, and compatibility with screed. Homeowners and builders can design effective and efficient heating systems for their homes by being aware of the various kinds of heating pipes that are appropriate for screed installations.

The best pipes for screed

Heating pipes are chosen for installation in the screed based on personal preferences and room dimensions. It is important to consider the benefits and drawbacks of different material varieties.

The following standards must be followed when selecting pipes:

  • A long period of service. Construction is a painstaking and expensive process, saving on the material, is not recommended. Choose materials that will last a long period;
  • The strength of the material. Durable material avoids the risk of pipe damage with mechanical exposure;
  • The level of heat transfer. The criterion is of particular meaning. Since the temperature in the room and the integrity of the material depend on the level of heat transfer;
  • Possible bending angle. By laying the pipes, it is necessary to avoid frequent fractures and a stroke, so the material should bend well and be plastic. Often during flexion, pipes give cracks, which later give a leak and require replacement;
  • Lack of risk of expansion. Material that has a high level of expansion is not used for installation in a screed.

The potential harm to human health must be considered when selecting a material. Give preference to materials made of raw materials that are safe for the environment and don’t release harmful substances into the atmosphere.

Polyethylene PEX

The material has a lengthy operational life and is robust. Stitched polyethylene pipes, in contrast to other pipe types, can tolerate both high and low temperatures. Long product service life is attributed in part to adherence to installation guidelines.

  • withstand high temperatures;
  • maintain high pressure;
  • when impacts and other mechanical influences are not damaged;
  • the material is stable before corrosion;
  • a light weight;
  • At high temperatures, the material does not expand.

One drawback of these pipes is their expense, particularly if a large room’s worth of material is being purchased.

Metal -plastic

Heating devices are commonly equipped with metal-plastic pipes. This is mostly because of its long operating life and reasonable cost. Corrosion rarely occurs in such pipes. Because the inner surface is coated with a unique material to create a smooth structure, deposits and trash hardly ever build up in metal-plastic pipes.


  • The material is durable;
  • 3 levels of protection against damage;
  • long service period;
  • Suitable for installation on the wall or as a warm floor;
  • The diameter of the pipe is selected depending on personal preferences.

Among the pipes’ drawbacks is their difficult installation. The welding method must be used for fastening. The material in these pipes has the potential to change shape at high temperatures, which is another drawback.

PPR (polypropylene pipes)

Any purpose can make use of pipes, including setting up heating equipment. Although different colors of these pipes are made, the material quality is the same overall. Even after extended use, the material does not corrode. PPR can sustain 150 bar of high pressure. The material is reasonably priced and available for purchase in nearly all construction stores.


  • high quality of the material;
  • affordable cost;
  • simple installation;
  • You can purchase at any construction store;
  • light weight;
  • simple installation;
  • high resistance to corrosion;
  • pipes do not distinguish harmful substances, so the material is safe for human health.


  • During the installation process, it is necessary to use a soldering machine to connect. After installation, a large number of joints remain. At an incorrectly set temperature, the joints are destroyed;
  • In the process of service, it is necessary to ensure not to damage the pipes.

Pipes frequently melt and crack because they cannot withstand extreme heat.

What pipes cannot be hidden in a screed?

To ensure that the device lasts a long time, all the criteria must be considered when laying heating pipes in the screed. The use of vapor-permeable products is not advised. Additionally, products that are too hard are not used, which could lead to installation issues. Using plastic products and metal pipes for screed is not advised. The metal is corroding, and this brief phase will continue. Plastic can break and is not meant to be loaded.

Features of pipe laying

Although installing heating pipes beneath the floor’s screed is not difficult, it is important to consider all the details and create a thorough work plan. During the process, the following elements need to be considered:

  • Before starting work, it is necessary to thoroughly leve the surface. The presence of irregularities can cause difficulties in the process of installing building material;
  • avoid. In order for the design to be whole, it is recommended to use pipelines and special corners;
  • Before starting the laying of pipes, it is necessary to draw up a scheme according to which work will be carried out;
  • fastening is carried out using special strips in which there are holes. Such tools protect the pipe from damage;
  • Pipes must be laid with a monolithic site;
  • Often in pipe laying several types of materials are used. Therefore, having finished with laying pipes, it is necessary to mount reinforced screeds that will fasten soft pipes;
  • For additional fixation, special clips of paper clips are used.

Experts frequently insert pipes straight into the insulation when installing pipes beneath the screed. This makes the installation procedure easier.


When installing the pipes, the thermal insulation layer is crucial. Polostyrol serves as a heating agent. This substance keeps the body in good condition for an extended amount of time without changing its qualities. Pipe installation cannot be done without first installing an insulation layer. The grooves are made in accordance with the pipe’s diameter after the polystyrene foam has been laid. These grooves are used to lay pipes. Remember that the insulation should have a few centimeters of thickness. A centimeter is thought to be the minimum, but this insulation is frequently insufficient.

Checking test

It is crucial to inspect every piece of material for flaws before installing any pipes. Marriage carries a significant risk, even though many product manufacturers guarantee their products’ quality. Due to the difficulty in identifying such a defect, issues frequently arise after screed that necessitate further expenses.

You can check for tightness with the following methods:

  • Statement with water. In order to check the tightness, it is necessary to fill all the pipes with water and struggle excess air. Leave pipes under pressure for several hours. In the case of defective pipes or poor -quality material, a leak appears. In the presence of the slightest crack, the pipe in this area must be replaced. Otherwise, the flow will increase, and it will be necessary to completely change the entire structure;
  • Air pressure testing. This method is used if there is no way to serve under pressure. To do this, close all the taps and use the compressor to skip air under pressure. If there are cracks and damage, the air will be pulled.

Special devices can be used to verify that the structure is tight. These devices are expensive, though. Thus, it is not a good idea to purchase such a device if one does not intend to install pipes in the future.

Homeowners have a few options when it comes to selecting heating pipes to be installed within a screed. There are benefits and things to keep in mind specific to each type of pipe. Cross-linked polyethylene, or PEX, pipe is a common option because of its flexibility, toughness, and corrosion resistance. PEX pipes are suitable for a variety of installation layouts because they are easily manoeuvrable within the screed.

Copper piping is another popular choice because of its superior heat conductivity and durability. Copper pipes are appropriate for heating systems because they are resilient and able to tolerate high temperatures. However, because of their rigidity, they can be more difficult to install within a screed and need to be handled carefully to avoid damage.

PPR (polypropylene random copolymer) pipes are an option for individuals looking for a more environmentally friendly solution. PPR pipes have a reputation for having excellent thermal insulation, which reduces heat loss and increases energy effectiveness. In addition, PPR pipes are a convenient option for screed applications because they are lightweight and simple to install.

When choosing heating pipes for a screed, it’s critical to take into account aspects like cost, ease of installation, and long-term performance. PEX pipes are more flexible and less expensive, but PPR pipes are more energy-efficient and copper pipes have better heat conductivity. You can select the best heating pipe for your home’s insulation and heating needs by balancing these considerations against your unique needs and financial constraints.

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