Square from foamed polyethylene use

Insulation is essential for maintaining a comfortable and energy-efficient home. Insulation is essential all year round, keeping cool air inside during the summer and preventing heat loss in the winter. Because of its adaptability and efficiency, foamed polyethylene has become a popular option among the different insulation materials available. The advantages and applications of foamed polyethylene insulation will be discussed in this article, with an emphasis on how it can be used to insulate a house’s square footage.

Expanded polyethylene (EPE) foam, sometimes referred to as foamed polyethylene insulation, is a strong, lightweight material that is frequently used as insulation. Because of the material’s cellular structure, which is made up of tiny bubbles trapped inside, heat cannot pass through it. In addition to having exceptional thermal insulation, this special construction also has sound insulation qualities that lessen noise transmission within the house.

The versatility of foamed polyethylene insulation in terms of application is one of its main benefits. Foamed polyethylene can be customized to fit a variety of spaces and surfaces, whether it is used to insulate walls, floors, ceilings, or roofs. Because of its adaptability, installation is simple even in difficult-to-reach places, guaranteeing thorough coverage all over the house.

Foamed polyethylene turns out to be a reasonably priced option for insulating a home’s square footage. Because of its thermal efficiency, which keeps interior temperatures constant and lowers heating and cooling costs, less energy is used. Its durable performance also reduces the need for regular maintenance or replacements, which ultimately saves time and money.

Foamed polyethylene insulation is also eco-friendly, which makes it a sustainable option for homeowners. Because it emits no harmful gases, is recyclable, and is non-toxic, it helps create a healthier indoor environment. Homes can enjoy the comfort and energy savings of foamed polyethylene insulation while also lowering their carbon footprint.

Application Benefits
Underfloor insulation Prevents heat loss, reduces energy bills, and provides a comfortable living environment.
Wall insulation Improves thermal efficiency, minimizes heat transfer, and enhances indoor comfort.

Manufacturers of heater for pipes and cost comparison

All well-known international and Russian marketing campaigns offer reasonably high-quality products. The following are the most well-known companies that make foamed polyethylene thermal insulation for pipes:

  • "Energoflex ". European company producing certified products of high quality. A specific type of product of this company – insulation for rooms. The difference from other manufacturers is white.

The retail prices of Energoflex products.

vendor code VN. diameter, mm Wall thickness, mm Disbelief. Rub/m price without VAT
L0140 15 6 eleven
L0080 25 6 15
L0064 35 6 21
L0002 15 9 15
L0015 25 9 20
L0006 35 9 26
L0007 42 9 33
L0010 60 9 59
L0012 76 9 80
L0013 89 9 123
  • "Thermoflex ". Russian company that produces environmentally friendly heaters with excellent heat -insulating properties. An important difference is attractive prices with European quality.

This company also manufactures heating cables, pre-made heat-insulated pipes, and insulating channels (casings) in a range of diameters.

Produces rolls of foil-foiled polyethylene foam in different thicknesses.

The end result is called Polyplex; these are stoves made of polystyrene plates intended to heat the walls, roofs, and foundations of different kinds of buildings and constructions.

Products: Polystyrene foam insulation materials intended for use in building.

Varieties of foamed polyethylene insulation

Pipe shirts made of polyethylene.

Foamed polyethylene squares are made into sheets, long rolls, and shells. Stitched or impersonal polyethylene serves as the raw material for these products. The process of sewing causes the material’s molecular structure to become more connected, making it stronger and denser. An increase in intermolecular ties, or stitching, can take two different forms:

  • chemical – with the help of reagents;
  • mechanical – by means of electron flow.

Stitching technology produces products with a closed structure full of tiny bubbles. The process of non-sewed polyethylene involves saturating a liquid mass with air. Since the air bubbles are much larger in this instance, a less resilient material with a lower density is produced.

Materials types determined by this material:

  • insulation for pipes made of foamed polyethylene;
  • foam plastic insulation foil;
  • thermal insulation based on foamed polyethylene under the laminate;
  • mats;
  • rolls;
  • Burn.
  • thermal conductivity – up to 0.4 W/m*K;
  • Density – from 25 to 40 kg/m. cube;
  • water permeability – not more than 1.9% per day;
  • vapor permeability – 0.001 mg/m*h*PA;
  • operation temperature -from -65 to 85 degrees;
  • Sound absorption – up to 18 dB.

Penophol manufacturing process.

Foamed polyethylene pipes that require thermal insulation are produced in two-meter segments with a wall thickness ranging from 6 to 20 mm and a conditional passage of 12 to 114 mm. It is utilized in high-temperature heating systems as well as cold pipes and sewage systems. Although the products’ colors can vary, gray is the most typical. To enable the case to be worn, an incision has been made along the foamed polyethylene segments that serve as thermal insulation for pipes. The cut edge is covered with a self-adhesive film, which helps to keep the case securely closed after installation.

This material not only provides thermal insulation but also adjusts for the linear and volumetric heat expansion of pipes. When pipes are walled up into the wall, this matters. Additionally, because of the way it is constructed, this polymer serves as a barrier against moisture when pipes are buried.

The isolation that reflects infrared radiation, where the foil layer is applied to the plastic base, is known as "foamed polyethylene" in this relatively new heater. He reflects heat radiation in the same way that a regular mirror reflects light. The installation technique of this material is inevitably influenced by its operating principle. The group of people is referred to as "foam" in reference to the product that bears the same name. Penophol occurs:

  • with one -sided foil;
  • with double -sided foil;
  • with a glossy surface;
  • with a corrugated surface;
  • with a self -adhesive surface;
  • With additional lamination.

Laminating requires the use of polyethylene film insulation with a foamed structure. These materials range in thickness from 1 to 60 mm, however the most common thickness is 2-3 mm.

They come in one-meter-wide rolls for sale. Place underneath the laminate and secure with tape. The lining reduces noise and vibration in addition to insulating the floor. possesses a serious flaw in that, when operating, it loses its original thickness and, as a result, its characteristics.

Since the only difference between the rolls and mats’ foamed polyethylene seals is size, they can be grouped together. That is, the mats will turn out if the roll is divided into segments. The thickness of this material ranges from 10 to 100 mm. They can be used as a damper when laying underground utilities and as insulation for walls and ceilings. It serves as a heat-insulating layer for heating and water systems as well. Warming foamed polyethylene pipes in rolls is recommended only for highways with sections larger than 114 mm.

The final tourniquet on our inventory. This looks like a regular rope; it’s just thicker, and it’s used to seal gaps in window or door boxes. Foamed polyethylene is available in narrow rolls with an adhesive base for the same uses. In the event that your windows are older and lack seals, this solution is suitable.

In order to install steam heating in a private home, you must select one of the possible installation schemes. Remember that the radiators will be extremely hot, necessitating the use of protective screens.

You can read up on the proper way to make steam heat.


Products are used to protect cold pipelines, which are located inside the structure. In this case, the formation of condensation is the result of isolation in this case. It is worth noting that the latest phenomena can cause a reduction in the life of the pipeline. Isolation is also used in freezers, when there is a need to save the extremely low temperature of the media. Quite often, these products can also be found when arranging hot water supply systems, which are located inside the structures. At the same time, the preservation of the initial temperature also acts as a task. If insulation is used outside of structures, then it can prevent freezing. Among other things, this material can protect a person from the possibility of obtaining dangerous burns. Inside the room, operation is allowed without additional recommendations, while it is necessary to install insulation outside, protecting it from exposure to direct sunlight. In this case, the material can undergo exposure from -40 to +70 degrees. Humidity is allowed up to 100%. The temperature of the coolant in the pipeline can vary from -40 to +100 degrees.

How to choose

When selecting a pipe heater, you should take into account factors like:

  • tightness;
  • size;
  • ease of installation;
  • Plot placement;
  • density.

The foamed polyethylene must completely cover the surface without any gaps or deformation in order to guarantee the tightness of the insulation layer.

Construction tape is used to secure and adhere glue to every joint. The size of the internal diameter of the tube, which is dependent on the pipeline’s dimensions, must be precisely calculated in order for the thermal insulation material to fit the pipe snugly.

The coolant temperature and the lower ambient temperature are taken into consideration when calculating the insulation’s wall thickness. The goals of thermal insulation are also considered, including keeping the coating at the appropriate temperature and avoiding freezing and condensate on the surface.

The ease of installation is the deciding factor when it comes to independent pipe insulation installation. A wall-to-wall incision in the pipe insulation makes it easy to insulate the finished pipeline. The polyethylene insulation foam is applied to the pipe segment beforehand when installing new channels.

The kind of material used depends on the pipeline’s location. The insulation with an external protective layer is chosen if the tap system is visible and has unrestricted access to sunlight. Polyethylene will be shielded from the effects of UV light and outside damage by the polymer shell.

The durability and efficacy of thermal insulation are contingent upon the high density of said insulation.

Heavy loads can be supported by high density foam without it deforming or the thickness of the insulating layer decreasing.

They also consider the volume of closed cells in the material; the greater the heat-insulating qualities, the smaller the cells.


Numerous types of insulation, including heat, hydro, and noise insulation, are available based on foamed polyethylene. It is possible to identify a few that are most frequently utilized.

  • Foam polyethylene with foil on one or two sides. This type is a variant of reflective insulation, most often it is realized in rolls with a sheet thickness of 2–10 mm, the cost of 1 sq. m – from 23 rubles.
  • Double mats from foamed polyethylene. They belong to the materials of the main thermal insulation, used to cover even surfaces, for example, walls, floors or ceilings. The layers are connected by means of thermal adhesion and are completely sealed. Realized in the form of rolls and plates with a thickness of 1.5-4 cm cost 1 kV. m – from 80 rubles.

  • "Penofol" – branded product from a well -known manufacturer of building materials with the same name. Polyethylene of this species has good noise and thermal insulation. Consists of a sheet of foamed polyethylene with perforation and a self -adhesive layer that provides convenient installation. It is sold in rolls 3-10 mm thick with a length of 15-30 cm and a standard width of 60 cm. Cost 1 roll – from 1500 rubles.
  • "Wilatter" – This is a heat -insulating sealing tour. It is used for thermal insulation of door and window openings, ventilation and chimney systems. The operating temperature of the product varies in the range -60 … +80 degrees C. Implemented in skeins with a combustion section of 6 mm. Cost for 1 linear meter – from 3 rubles.

Famous trademarks of insulation

Of the manufacturers on the Russian market, four are designated as follows:

The company uses cutting-edge machinery to create foamed polyethylene, which is then produced in rolls. Excellent hygroscopicity, durability, ease of installation, and soundproofing were noted as some of the material’s positive qualities.

The absence of dangerous contaminants that are bad for your health is what makes this thermal insulation unique. Since the material is elastic, it can be laid with ease.

An important rule – during installation, the neighboring canvases are located VSTOK, and the edges are fixed with tape reinforced.

Although the temperature range of operation is much wider, the properties are similar to those mentioned above. The material is synthetic and has excellent chemical, acoustic, and physical properties. The seams are glued with tape when the "joint in the joint" is installed.

Despite being produced outside of the Russian Federation, the material satisfies European quality standards. A few benefits of insulation include improved sound insulation, safety from harmful substances, compatibility with all surfaces, and suitability for use in commercial, residential, and industrial buildings.

Features of the manufacture of insulation

High-pressure polyethylene is the material of choice for high elasticity. This compositional element receives additions of antipyrene (which fights fire) and other materials.

The following phases are involved in the manufacture:

  • Polyethylene granules are subjected to melting in a special container;
  • liquefied gas is supplied to it, which is a foaming reagent;
  • Due to it, the structure of the insulation is formed.

The final product is delivered in rolls, slabs, or sheets. Moreover, polyethylene comes in a variety of densities, sizes, and thicknesses, so you can select it for specific uses like room insulation.

Since the material doesn’t contain any harmful substances, it can be used to thermally insulate residential and commercial buildings in addition to the industrial sector (lining air pipelines, pipeline systems, ventilation systems, and refrigeration chambers).

For the purpose of effectively reflecting heat, manufacturers typically cover one or both sides of the surface with an aluminum foil film. The film is polished to the highest standard. The reflection coefficient in this instance can range from 95 to 97%.

Complex protection main advantage

The primary reasons why pipelines are necessary are as follows:

  • Freezing. Gusts of the pipeline due to freezing of the substance transported through them-the main scourge of the winter period.
  • Heat loss. Most of the modern materials from which the pipes are made have high thermal conductivity, as a result of which heat loss can reach very significant indicators (more than 50%), which significantly reduces their energy efficiency and increases the cost of utility bills by an order of magnitude.
  • Soundproofing. Often this is an additional profitable “bonus” of insulation materials, which allows to reduce the number of technologically determined noise (structural vibrations).
  • Corrosion, mold and fungus protection. A high degree of moisture absorption can reduce the service life of communications.

Foamed polyethylene heaters for pipes can offer strong defense against each of these elements.

Advantages and disadvantages

About the material’s benefits:

  • Like all foamed polymers, the PPE has a low thermal conductivity coefficient – 0.035 W/(m · Grad).
  • The material has good cushioning properties. From foamed polyethylene, they make: packaging (density 25-33 kg/m3), flooring (density 300 kg/m3), gaskets for equipment (300-500 kg/m3).
  • Signed polyethylene has dielectric properties, therefore, from self -extinguishing PPE, the electrical insulation of high -frequency cables is made. Dielectric permeability of the PPE is in the range of 1.4 … 1.5 (water – 81, vacuum – 1).
  • PPE – inert material that does not enter into chemical reactions.
  • And this is also a light and waterproof material, it is not eaten by insects and mice. And most importantly – it is inexpensive.

He also has the following drawbacks:

  • Foil PPE will work as thermal insulation only if there is at least 2-3 cm of the air groove in front of the foil layer.
  • Above 100 0c material begins to melt, and then burn. You can use it only in rooms with a high specific fire load.

What is a foamed insulation

The thickness and density indicators of foamed polyethylene can vary depending on its intended application.

Using hydrocarbons, molten polyethylene raw materials are foamed in the process of making polyethylene foam. This procedure yields an elastic canvas that resembles a bubble structure. When polyethylene material is exposed to high temperatures, it expands twenty times in size. The mixture is then run through the extruder to give it the required shape while it cools.

Polistyle foam is shaped like a canvas and can be rolled, coiled, or used as a tourniquet. Depending on the manufacturing technique, the material can be one of two types:

  • Non -haired (NPE). Polymer, whose molecules do not have additional spatial connections. It is less durable, has less density, elasticity, resistance to chemicals. Its large cellular structure, contracting, emits a crack and changes its original shape;
  • stitched (re-x). The melting and processing of the material occurs in special conditions, as a result of which saturated carbon radicals are added to the formula. The result is the formation of a spatial grate consisting of strong chemical ties, which are called a stitch. Polyethylene stitched material is the best choice for pipe insulation, as it has a high density, strength, elasticity. When compressing, the material quickly returns to the original form.

The dimensions of tubular polystyrene foam

Polistyle insulation is also designed to be easily manipulated into a cylindrical shape for pipes. The standard tube has a length of two meters, and the diameter and wall thickness indications vary based on the pipe size.

The thickness can signify various things:

Within the range of 6 to 200 mm, the cylinder’s internal diameter varies (large indicators are available for industrial use).

Polyethylene cylinders with the same external diameter as the pipes are made in order to provide the best possible thermal insulation for the pipes. Insulation manufacturers create products in the appropriate sizes by aligning their production processes with the standard parameters of the current tap and sewer products. The pipe polystyrene cylinder is sliced all the way around, frequently with an adhesive layer for ease of installation on a mounted pipe system without the need for disassembly.

Polyethylene material has a colored surface layer that helps with UV radiation insulation of pipes, providing qualitative protection for the heat insulator. In order to prevent overheating and hypothermia, the manufacturer can also foam the material.

Roll insulation is used to safeguard intricate pipeline structures. In this instance, material is wrapped around pipes of any diameter, and the pipes are secured with specialty tape. Using reinforced adhesive tape, thermal insulation of pipelines in difficult-to-reach locations can be completed swiftly and easily.

What it is

Foamed polyethylene is an artificially elastic material made of gas-filled bubbles. Reagents are combined with polyethylene granules on specific extruded lines for production. The composition heats up to +140 degrees during the process, which triggers a chemical reaction that causes the material to double in volume and take on a cellular structure.

The continuous mixture can be shaped to produce different kinds of heat insulation:

  • sheets rolled into rolls for isolation of building structures and packaging;
  • foil sheets with the reflective side;
  • Buns for sealing joints;
  • mats for various purposes;
  • hollow cylinders for insulating pipelines.

Molecular ties are strengthened through chemical or mechanical stitching to increase the strength of foam polyethylene products.

The closed bubbles’ size is limited to 1 mm, which improves the material’s density and technical attributes. The pipe heater is composed of non-eared, stitched polyethylene.

Foamed polyethylene is inert to a variety of substances and building materials. As a result, pipe insulation can be done in open access areas and below ground. Polypropylene, steel, cast iron, metal-plastic, and polyvinyl chloride pipes can all benefit from thermal insulation using polyethylene insulation foam. It is utilized in private pipelines, city communications, and industrial engineering systems.

Instructions for use

It is quick and simple to mount foamed polyethylene in the shape of hollow cylinders and rolls. The work process is the same whether applying to a new pipeline or insulating an existing highway.

Disabling the water supply and heating systems is the first step. Additionally, prepare the pipe surface by cleaning it of debris and rust before adding the insulation.

When installing a new engineering communications system, a polyethylene foam pipe can be fastened either at the complex’s end of the connection or during the structure’s assembly. An isolation box is first placed on the pipe section if the installation happens while the pipeline is being connected. The cylinder is opened on one side and mounted on finished pipes if the insulation is connected to the mounted hydraulic system.

Plastic clamps or adhesive tape are used to secure the technical shared seam. Incisions can also be sealed with "Neoprene," "Acrol," or rubber 88-np stamp glue.

Foil tape is used to secure the longitudinal joint between the insulation segments. It is possible to disassemble insulation for reuse in the event of repair because the gap between the pipe and the polyethylene foam is not glued.

It might be necessary to use thermal insulation in different sizes when the pipeline section has joints and inserts with a larger diameter than the main one. Warm up the major portion first. A large inner caliber is positioned in both directions, isolating a wider joint between the pipes. Thermal insulation is also required at the corners if the pipeline is bent or has taps.

It is recommended to use a leaf version of foamed polyethylene when installing large-caliber pipes.

To accomplish this, a piece of the roll that is the same diameter as the pipe is cut off, the plot is covered in insulation, and the joint is secured with tape. Up until the pipeline’s terminus, installation work is still being done all over the region.

Trade marks

What then did we present to Izhevsk suppliers when we looked for foamed polyethylene insulation?

There are many products available, but how do you pick the best one?


Stroydetal’s insulation pleased me with its affordability and wide selection. A comprehensive table of application is provided by the manufacturer with his products:

Wilaterm is intended for use in warming copper, steel, and plastic pipes.

The costs and insulation specifications that were offered in Izhevsk are listed below:

Mark/manufacturer Name Wall thickness, mm Pipe diameter, mm Price, rub/pog. m
Wilatterm Extra NPE 76/13 13 76 53
NPE 61/13 13 61 51
NPE 60/9 9 60 29
NPE 54/9 9 54 26
NPE 49/13 13 49 40
NPE 43/13 13 43 34
NPE 35/9 9 35 15
NPE 28/13 13 28 22
NPE 28/9 9 28 eleven
NPE 22/13 13 22 19
NPE 18/9 9 18 9
Wilaterm (sewage) NPE 110/13 13 110 90
NPE 110/9 9 110 85
NPE 89/13 13 89 58


Under the Penolin trademark, this manufacturer, the Adgiline Group of Companies, creates a different range of pipe heaters.

Image from the official manufacturer’s website.

Via regional agents, the company itself is involved in the product sales process. See, prices are more than reasonable. There is a lower price list.

Prices listed by the TM "Penolin" regional representative office in rubles.

The manufacturer suggests gluing insulation with Energoflex adhesive TM when cutting and installing it later.


Another company offers more than just a broad selection of insulation; its products are widely represented in the chain of stores in our city.

Mark/manufacturer Wall thickness, mm Pipe diameter, mm Price, rub/pog. m
Merilillon 6 mm 6 15 3.20
6 18 3.50
6 22 3.90
6 28 4,20
6 35 4.40
6 42 4.70
Merilillon 9 mm 9 52 16.50
9 57 20.25
9 65 23.85
9 76 34.40
9 89 40.80
Merilon 13 mm 13 89 52.20
13 102 65.85
13 114 68.40
Foil 6 15 12.20
6 18 12.60
6 22 16.95
6 28 17.20
6 35 17.60


Above all, we got to know Energoflex’s products.

This manufacturer advertises a larger selection of heaters as safe materials and explains why that is significant.

The company Energoflex’s product.

According to the Captain Obviousness report, a manufacturer can be given greater trust if they disclose that the insulation in the combustibility class belongs to the G1-G2 group. This is because some manufacturers may be more devious and only highlight their materials’ ability to withstand fire.

In actuality, it is 306 degrees, the temperature of the foamed polyethylene. The manufacturer explicitly states that adding additives to polyethylene increases the material’s bothering ability when not directly exposed to fire.

The material’s technical specifications are shown in the table.

A series of super is, in my opinion, the most versatile option available in the entire Energoflex pipe insulation line. It is shown in stores as one of three types:

  1. A sewn option 1 and 2 m long, with a wall thickness of 9 mm;
  2. A sewn option 10 m long for insulation of pipelines laid in the walls and screed on the floor;
  3. In leaf form for large diameter pipes.

A number of superpropettes installed in a screed for water supply pipes.


The manufacturer’s logo is square.

Thermaflex products is another well-known brand in the market. The manufacturer’s insulation for pipelines made of foamed polyethylene thermoflex Eco (Thermaco) was appropriate for our tasks.

Technical specifications for the Thermaco line.

Regarding the price, Thermaflex starts at:

  • From 13.80 rubles. per 6 mm wall thickness;
  • From 19.90 rubles. for 9 mm;
  • From 32 rubles. for 13 mm;
  • From 61 rubles. in 20 mm;
  • From 96.80 rubles. over 25 mm;
  • From 217 rubles. for 30 mm.

The pipes’ material (plastic, copper, or steel) affects their price.

A flexible and effective material for enhancing home insulation and heating is foamed polyethylene. The material’s exceptional thermal characteristics and lightweight structure render it the perfect option for covering expansive surfaces like walls and floors. Homeowners can easily install and customize their insulation, minimizing heat loss and cutting energy costs, by using square pieces of foamed polyethylene. Foamed polyethylene also offers long-lasting protection for the house by being resistant to mold, moisture, and pests. Foamed polyethylene squares can be incorporated into new construction or retrofitted to improve the comfort and energy efficiency of any living space.

Installation of insulation for pipes

The highway is designed in a straightforward manner, with foamed polyethylene foam installed on pipes of any diameter for thermal insulation. In order to prevent NPE or PPE products from interfering with pipe joining—particularly when welding or soldering—thermal insulation material is fixed at the end of pipeline installation. This is because high welding and soldering temperatures have the potential to damage insulation cylinders.

The product is easily attached to the pipe; the shell is always made up of two halves, and the cylinders have cuts on them. Even if you bought entire cylinders (these forms are also available for purchase), you will still need to use a common knife or carpenter’s cutter to cut them. Construction tape is used to seal the cut after a wire is used to secure the cylinder or tube to the pipe.

The following tasks are included in the preparatory work that comes before insulation installation:

  1. Before fastening the cylinders, tubes or shells on the pipes of any communication line, it is necessary to clean the surface of the pipes from cement, dirt, rust and other garbage so that foam polyethylene is as tightly possible to fit the surface:
  2. Make sure in accordance with the size (diameters) of pipes and insulation.

After the preparatory work is finished, the thermal insulation forms are attached. It is best to use adhesive from the following brands to glue a section of cylinders or tubes: Quickbond itena, 88-np, Acrcol Contact, and Neoprene 2136. These brands can all withstand maximum temperatures between -500C and +1800C, which is more than enough for dependable operation. the cylinder and cut joints, which are sealed with an adhesive tape strip after gluing. Glue might not be necessary because many foamed polyethylene foam products have a self-adhesive coating.

Features of installation

It’s easy with polyethylene finishes to help with that. Insulation can be installed during the system assembly process or after the work is finished and all components are in place.

In the first instance, each pipe wrapping has a sleeve of thermal insulation material strung on it.

It is crucial that the pipe’s external diameter and the sleeve’s inner diameter match. You can cut the insulation if it is longer than the pipe segment; if it is shorter, you can plant more sleeves.


Cleaning the dirt is required prior to installing the pipe insulation. If the pipeline is made of metal, any remaining rust must be removed. The pipe insulation is not attached to the part’s surface until the preliminary work is finished. The following brands’ glue is used for this:

  • 88-NP;
  • Quick Bond;
  • "Neoprene 2136";
  • "Contact acrol".

It should be mentioned that Neopren 2136 comes in a spray form, which makes the job easier. Metalized tape is used as glue at the joints where the heater sleeves are joined.

Installation in ready -made systems

In a similar vein, work is done once engineering communications are installed. The material needs to be cut, and there is no way to string the heater tubes on the pipe itself. That is the only difference. Make a longitudinal incision from one sleeve hole to the next using any homemade tool. The isolation won’t be harmed in the slightest and will continue to exist in its original form.

You can "put on" the insulation directly onto the pipeline thanks to the incision that was made. Thus, disassembling pipes or performing any other kind of work is not necessary. Metalized tape is used as glue for the cuts and joints on the sleeves.

Thermal insulation is easily removable if needed. This makes it simple to maintain and repair the pipeline. It will be able to swiftly replace the insulation entirely or in part if it sustains damage. Similar to initial installation, repair is only permitted if the engineering system is turned off and the pipe temperature is appropriate for the space.

Basic properties

Because thermal insulation tubes are composed of polyethylene foam, a thermoplastic polymer, they have all the benefits of both structure and form in addition to the full range of properties of this material.


  1. Foamed polyethylene for pipes is absolutely impenetrable for moisture and gaseous substances, water absorption is no more than 2% of the volume.
  2. He racks to any biological environment – does not rot, does not lend itself to the action of the fungus, etc.P.
  3. Withstands the effect of active chemicals, such as alkalis, acids, oils and gas products.
  4. Practically does not change properties in the temperature range from -60 to +100 0c.
  5. Racks to mechanical abrasions, its service life reaches 80 years.
  6. Has a very high thermal insulation coefficient.
  7. It has the ability to sound absorption, so it can muffle vibrations and other sounds coming from communications.
  8. Not afraid of condensate, so it does not require additional waterproofing the pipe. This property gives an additional possibility of protecting the pipe material from corrosion.
  9. Much stronger than some other thermal insulation materials, therefore does not require strong external protection.

Crucial! Foamed polyethylene pipe isolation is easily mounted and adheres firmly to the pipe, allowing for precise pipe diameter selection.


The following drawbacks of polyethylene foamed pipe must be considered before using them:

  • Fenage Polyethylene, like any other polyethylene-based material, begins to melt at temperatures above 110 0C and can burn, although it does not support combustion.
  • Foamed polyethylene begins to collapse under the influence of ultraviolet radiation.

Positive and negative aspects of insulation from foamed polyethylene

Like any material, foamed polyethylene for pipes has advantages and disadvantages. Next, think about them, beginning with the favorable attributes:

  1. High thermal insulation. The use of tubes allows you to reduce heat loss to 80% and provide the same fluid temperature during pumping.
  2. Low moisture absorption of not more than 2%. Thus, the pipeline is reliably protected from corrosion and the heat -insulating properties are not reduced.
  3. Good vapor barrier. The insulated surface does not fog, condensation does not form. This feature gives additional benefits – saving on waterproofing.
  4. Operation in difficult conditions. The tube from this material withstands temperature changes from -80 to +95 ° C.
  5. Noise insulation. Reduces structural noise, absorbs sounds from communications during liquid circulation. Sound absorption of foamed polyethylene – 16 dB.
  6. Small weight. The use of tubes does not lead to an increase in the load on the insulated object.
  7. Simplicity of installation. The arrangement of insulation does not require special skills, equipment and protective equipment.
  8. Safety for humans and the environment. The tubes are made without the use of toxic substances, dust and fibers are not distinguished during operation, which allows them to operate in areas with increased sanitary and hygienic requirements (medicine, food production).
  9. High mechanical strength. The insulation does not deform, when compressed quickly restores its original shape, which allows you to use it without an additional protective coating.
  10. Long -term operation. The normative service life of isolation of at least 25 years.
  11. Chemical and biological stability. The tubes do not lose their properties in contact with cement, lime and gypsum solutions, concrete, oils and other aggressive materials. Polyethylene does not rot and resistant to fungus and mold.

The simplicity of installation—which eliminates the need for unique add-in laws and tools—is a significant benefit of this kind of isolation.

Out of every feature of foamed polyethylene, there are only two drawbacks that stand out.

1. Compromised flammability. According to GOST 30244-94, foamed polyethylene is classified as group G2, meaning that it melts 30 to 40 seconds after coming into direct contact with fire. Under industrial conditions where there is a risk of fire, insulation cannot be used.

2. UV light causes it to be destroyed. Isolation is destroyed by direct sunlight; this needs to be considered during installation and storage.

The use of insulation for pipes from foamed polyethylene

Potential choices for the shirts’ wall thickness as an insulation for pipes.

As we’ve already mentioned, pipes with polyethylene insulation are utilized for:

  • wiring the circuit in the wall;
  • wiring the contour in the floor screed;
  • contour insulation in unheated rooms;
  • underground laying of communications.

When heated, any material used to make pipes has the capacity to expand in both length and volume; the only thing that can be determined is how much. Thus, the most widely used pipes, polymer pipes, have the highest expansion coefficient. These days, everyone tries to conceal communications behind floors or walls. In the event that damping covers are not used, the pipes will simply burst as their walls expand. Concerning how to locate and stop the flow in the pipe We discussed in one of our earlier pieces.

Mineral wool is used as insulation for pipes with large diameters.

Large homes typically designate a separate room, typically in the basement, for the boiler room. The boiler room has a lower temperature than the heated rooms and is devoid of batteries. The use of foamed polyethylene pipe heat insulation prevents the coolant from dropping in temperature. As a result, the boiler operates more efficiently and the cost of heating the house goes down. When the outline goes through an unheated attic, the same thing happens. This situation could occur if:

  • in the house Vertical heating wiring;
  • The house has an open gravitational heating system with open expansion tank.

The effect of polyethylene sealing is the same when pipes are laid underground. The water supply, heating, or sewage circuits can all freeze in the absence of thermal insulation. Also, since they are buried at least a meter below the freezing point of the earth, a heavy load is placed on subterranean communication systems. Everything on Earth is under pressure, including people, cars, outbuildings, and so forth. Hard sleeves are used to protect communications, and sewer pipes with wide conditional passageways are ideal for this purpose.

During the design phase, all the specifications for a private home’s heating system—including the gas boiler, fittings, pipes, latches, and batteries—are determined.

Gas stove heating is installed before piers in certain older homes. Such contours are not very effective; more cost-effective modern solutions are available. Continue reading.

Technical and operational set of foamed insulation

There is a huge variety in pipe insulation available. This area contains mineral wool, polypropylene, and polyurethane foam. Tubular polyethylene, however, prevailed for many due to its technical and operational qualities; additionally, its cost was reasonable given the quality.

  • The density indicator in non-lushed material is 20-45 kg/m³, in the stitched-from 25 to 200 kg/m³;
  • The heat conduction coefficient varies between 0.037 – 0.040 W/m × ° K;
  • The combustibility according to GOST 30244 – 94 for non -eared raw materials is G2 – G4, for the stitched – G1 – G4. For use as a heater of an open -type heat pipeline (not buried in the ground), it is recommended to choose a mild and selfless raw materials, that is, G1 – G4;
  • The absorption of moisture in non -lushed polyethylene is 0.2%, in a stitched analogue of 0.9 – 1.1%;
  • The vapor permeability for both types of raw materials is the same – 1.8 mg/m × h × PA.

Modern foamed heaters have a high stitched material lifespan and a relatively low non-sewn form.

Working with these materials is also convenient because the temperature indicators have a positive mark and range from minus 60 to 90 degrees. The material is distorted with non-normative indications; hence, steam heating systems should not use it.

The temperature at which the insulation ignites is a crucial indicator. Since high-quality raw materials burn at 300 degrees with little toxicity, foamed polyethylene is safe for consumption by humans.

1 Why is thermal insulation for pipes needed

Industrial pipelines and residential pipes both require thermal insulation.

First of all, in unheated rooms and throughout daily life, street-based water and sewage pipes are essential. The medium carried by the pipe won’t freeze at a lower air temperature if thermal insulation is present.

The majority of common pipe materials, including steel, fiberglass, and various polymeric materials, have high heat conductivity, which causes their freezing to happen quickly.

Since internal glaciation is the primary cause of pipeline breakthroughs in both metal and plastic, freezing is the biggest threat to any pipeline that transports liquid environments. It’s likely that you won’t be shocked to learn that the majority of urban water supply pipeline advancements happen during the winter months.

In heating systems, pipe thermal insulation and ground-based water pipe insulation are also essential because they stop heat losses from the transported medium, allowing you to keep the fluid temperature constant throughout the pumping process.

Excellent heaters for pipes are frequently used as soundproofing materials because of their excellent noise-disposable qualities.

Thermal insulation for pipes can be installed very easily. If insulation is needed for the pipeline that is currently being built, it is simply applied to the section of pipe that has just been installed.

Using polyethylene thermal insulation to warm pipes

In the event that the current highway is insulated, the insulation is secured with brackets or adhesive tape after the insulation sleeve of the appropriate diameter (between 12 and 150 mm) is cut and pulled onto the pipe.

The properties of thermal insulation raw materials

Pipe thermal insulation serves as a pipeline’s defense mechanism. Various engineering communications employ foamed polyethylene.

  • heating highways;
  • cold and hot water supply pipelines;
  • sewage;
  • air conditioning systems;
  • air flow in ventilation.

Insulation is required in heating and hot water supply pipes in order to level the material’s thermal expansion and minimize coolant thermal losses. The heat insulator protects cold water pipes from freezing and condensing on their surface. Polyethylene foam lowers noise levels and prevents the sewer channels from freezing. Pipes used for air conditioning and ventilation are shielded from ice and condensation.

Foam polyethylene’s technical properties enable it to serve as a thermal insulation medium.

  • Thermal conductivity coefficient is 0.03-0.04 W/m*K;
  • The density of products changes from different manufacturers from 25 to 40 kg/m3;
  • water absorption – not higher than 2%;

  • The fire resistance of class G2 in accordance with GOST 30244 (refers to moderately combustible material);
  • The temperature of the application is from -60 to +90 degrees;
  • The vapor permeability of 0.001 mg/m*h*PA allows you to attribute the material to the completely vapor permeable;
  • The minimum service life is 20 years, the maximum is 80 years;
  • The strength is expressed in stretching with a rupture of up to 0.3 MPa and elasticity modules in the dynamics of up to 0.7 MPa;
  • Depending on the layer of insulation, sound absorption coefficient is from 25 to 55%;
  • resistance to aggressive chemical effects.

High insulation indicators show the characteristics of pipeline insulation for different uses. Reduced thermal conductivity enables you to increase heat insulator thickness without compromising efficiency. Polo-polyethylene exhibits waterproofing qualities and deters corrosion in metal pipes. The material has high hygienic indicators, doesn’t decay, and stops bacteria and fungi from growing on its surface.

The fueling at temperatures above 300 degrees and the spontaneous combustion at 400 degrees are the drawbacks of the heat insulator. The material is also unstable to ultraviolet light.

The material’s elasticity prevents deformation, but sharp objects can still cause damage to it. Polyethylene foam can be used in private engineering systems as well as industrial facilities due to its low cost and simplicity of installation.

2 stacking tips

There are just three tricks for laying foamed polyethylene that will help cut down on how long it takes to complete such tasks without the right expertise.

  1. The reflecting layer of insulation should be laid on the side where the heat source is located;
  2. For the extremely possible effect of reflection, the so -called “airspace” of 1.2 – 2 centimeters on both sides of the insulator should be left;
  3. All mounting seams must be glued with construction aluminum tape in order to achieve the highest possible tightness and waterproofing.

Generally speaking, it can be boldly said that this isolation material satisfies the demands and specifications of contemporary thermal insulation materials, considering its qualities.

This material will successfully shield your home from the elements, moisture, and different types of unwanted noise.

Foil-based polyethylene isolation

Simultaneously, the minimum amount of space lost in the room where the insulation is located and the amount of insulation itself will be consumed can only be happy. Furthermore, foamed polyethylene stands out due to its comparatively low cost and significant technical potential as a thermal insulation material.

2.1 process of installation of foamed reflective thermal insulation (video)

2 Requirements for high -quality thermal insulation

The following specifications for high-quality thermal insulation material for pipe insulation should be fully satisfied:

  • Minimal thermal conductivity – the less the thermal conductivity of the material, the less thickness the insulation must be used. The issue of size is not particularly significant in domestic insulation, however, with thermal insulation of elements of production lines, it is quite acute;
  • Hydrophobicity should be like thermal insulation of the energy fuel for pipes – the insulation should perform additional protection of the pipe from moisture, do not collapse and not lose its thermal insulation characteristics under the influence of the liquid;
  • Mechanical strength – thermal insulation should be resistant to any external influences, both mechanical and atmospheric nature;
  • A wide temperature range – the insulation should easily withstand the high temperature of the medium transported through the pipeline.

2.1 Technical characteristics of insulation from foamed polyethylene

The most advantageous combination of technical features and value is found in thermal insulation made of foamed polyethylene, outperforming polystyrene foam, mineral wool, and polyurethane foam in pipe heaters.

Since metal surfaces do not corrode when exposed to moisture, the structure of polyethylene insulation for wires consists of the tiniest closed cells, which further waterproof pipes and increase their longevity.

Polyethylene insulation installation

Foamed polyethylene has a density that ranges from 25 to 40 kg/m3, however most top manufacturers’ products typically have a density of 30 to 35 kg/m3. As with K-Flex thermal insulation for pipes, thermal insulation for pipes made of foamed polyethylene has good elasticity up to -80 degrees, making installation simple on pipes of any shape.

The insulation has a dynamic elastic module of 0.77 MPa, while the maximum load on the gap that can withstand a heater made of foamed polyethylene is 0.3 MPa. Foamed polyethylene has a compression coefficient of 0.2 when subjected to an external load of 5000 N/m2.

The following are some of this type of insulation’s thermal insulation characteristics: The steamability coefficient is 0.001 mg/MCPA and the thermal conductivity coefficient is 0.035 W/MK, indicating that thermal insulation for foamed polyethylene pipelines falls within the category of steam-permeable materials cavity.

Foamed polyethylene pipe thermal insulation has good hydrophobic properties; after being fully submerged in water for 24 hours, it only absorbs 1.5% of its volume in liquids. This indicator essentially does not increase with the length of the immersion; after 28 days, the insulation gains only 1.9% of its volume.

Foamed polyethylene has an operating temperature range of -60 to +90 degrees. The material starts to distort if the maximum temperature is surpassed.

Such a heater falls under the class G2-moderately combustible materials under the Fire Management standard, which is based on GOST 30244-94 (as in roller heat-insulating materials). Polyethylene ignites at 417 degrees when it self-flames and at 306 degrees when it is directly exposed to fire.

It is noteworthy that polyethylene has a high degree of chemical stability, despite the fact that it is unable to discriminate between substances that are detrimental to human health. Polyethylene decomposes into gaseous CO2 and water (h2O).

In context, a square sleeve

additional characteristics

The thickness of the material can vary from 6 to 20 millimeters. In this case, the intermediate values are 9 and 13 millimeters. On sale, you can find a great variety of standards of diameter of the sleeve, this parameter ranges from 12 to 200 millimeters. In the industry, the most commonly uses the internal diameter equal to 100 and 150 millimeters. In the process of production, in addition to a foamed reagent, all kinds of special additives are added to the ingredients, which are designed to give the final product the required characteristics, namely elasticity and refractory. As for the latter, the insulation is attributed to the class of moderately combustible.

Installation on an unidentified system

You must install the tubes on the pipes on the pipes if you plan to use the Energoflex pipe insulation, which is installed on a system that hasn’t been mounted yet. It is essential to shield the material from fees when welding. The material should be isolated and the seams cleaned once they have cooled. The last step involves gluing isolation on the ends. Building brackets are a useful tool for switching. If the pipeline is underground while in use, it should be covered by a casing to prevent damage from soil elements. This will ensure that the joints are sealed further.

Advantages compared

Because polyethylene insulation has a low coefficient of thermal conductivity, heat can be maintained with a coating as thin as one atom. The primary benefit of the material over polyurethane and polystyrene foam is this.

The latter are attached to pipes in an unsuitable manner and have a thick layer, despite being appropriate for pipe insulation. Other metrics show that the two materials mentioned above combined with polyethylene foamed thermal insulation are not at all inferior.


These are some of its benefits. First of all, because it practically does not absorb moisture, it both wears down more slowly and keeps its ability to stop heat leaks. The material has mechanical strength for stretching, so the insulation can be fixed without worrying about deformations, and resistance to microflora action, which prevents mold and fungus from growing on the surface of polyethylene. It doesn’t preserve dents and bends; it rapidly returns the form to what it was.

It’s obvious how easy installation is—you can attach the material to any kind of pipe’s surface. It is made in the shape of hollow shells that resemble tubes and are wrapped around the pipeline’s components. Chemical stability of the material allows pipe insulation to maintain its original performance when in contact with most building materials, including solutions like gypsum, cement, lime, and concrete.

Lastly, a heater like this will offer hygienic safety; foamed polyethylene products are frequently utilized in the design of kindergartens, schools, labs, and facilities for the food industry.

In addition to not endangering human health or containing any toxic materials, the material cannot alter the quality of food products.

Low production costs and conducting customers are two benefits of pipe insulation. The cost of finishing from polyurethane or polystyrene foam is nearly twice as high as that of polyethylene coating.


Polyethylene pipes with no insulation have a high combustibility. Even though this indicator mostly agrees with GOST, using the material in areas where there is a chance of coming into contact with open flames is still risky.

For this reason, even though polyethylene heat-insulating coatings work well, they are not frequently utilized in businesses across certain industries.


Pipeline isolation is accomplished through the use of harness-shaped polyizole polyethylene sealing.

Many Russian factories, including those in the cities of Krasnodar, Volgograd, Stavropol, and others, are currently producing signed polyethylene materials. The material comes in a variety of coating and uncoated forms, as well as rolling and dense mats that are bonded together. Foamed polyethylene is made in the shape of a tubular shell and harnesses, specifically for pipe insulation.

With coating

Most frequently, the material has a bilateral or one-sided coating. It usually turns out to be metallized film, foil, or lavsan. Accordingly, materials consisting of foil-based foamed polyethylene are frequently referred to as reflecting insulation.

Polyethylene coated in foil

Without cover

Non-polyethylene Non-polyethylene is suitable for use as a wallpaper substrate for thermal sound insulation; it should be used under "warm" electric and water floors as well as for various types of flooring (tiles, parquet, linoleum). The pipe shell and harnesses are widely used to prevent freezing, condensation, and corrosion in buildings, both inside and outside. In addition, it’s used to seal joints in plumbing fixtures, window and door installations, and other construction projects.


The primary distinction between polyethylene foam and its initial raw materials is its density, which varies depending on the manufacturing process for porous polymers.

The material’s protective properties are more effective the denser the material is. Heavy loads can be supported by high density foam, which also prevents the insulation layer from thinned and deforming.

Note: Only foamed high density polyethylene is used for high-quality thermal insulation. The substance also possesses the following qualities:

The substance also possesses the following qualities:

  • Low coefficient of thermal conductivity.
  • Low electrical conductivity.
  • Good soundproofing properties.
  • High elasticity.
  • Strength (with long polymer compounds).
  • It does not harm health under any conditions (unlike PVC).
  • Foamed polyethylene inerten to chemical reagents.
  • Due to moisture resistance, protects the pipe from corrosion, mold and fungal lesions.
  • It differs in simplicity of installation.

Disadvantages of polyethylene foam

The material’s combustibility is a drawback; it can spontaneously ignite at 400 °C and maintain burning at temperatures higher than +300 °C.

Furthermore, the material lacks physical strength and has a low UV resistance, making it easily damaged by sharp objects.

The purpose of thermal insulation for pipes

Insulation is utilized in residential construction as well as in industrial settings. Water and sewer pipes installed outdoors in private homes must always be insulated. Furthermore, pipe installation in non-heated spaces always involves the use of thermal insulation.

Thermal insulation serves the primary function of keeping pipes from freezing inside materials when the outside air temperature is low. The majority of common heaters have high thermal conductivity, which makes it difficult to choose a good material and, obviously, results in poor heat maintenance.

In the meantime, the primary issue with every pipeline used to transport liquid media is freezing. Regardless of the material, when the temperature falls below zero, the liquid within the pipe freezes and tears the pipe from the inside out. Of course, the pipe’s gap cannot make its users happy.

Additionally, if a particularly warm liquid passes through the pipes, thermal insulation is required. Although it is unlikely that the pipeline will burst in this instance, heat loss remains an issue. Insulation is used to minimize losses in the remaining areas, and the heating system should only heat the designated areas.

Furthermore, a high-quality heat insulator can lower noise levels in addition to preserving heat. It’s also important to consider the loud noise that the fluid making its way through the pipes typically makes; after all, the cozy atmosphere won’t happen by itself.

Pipe insulation is relatively easy to install. For instance, thermal insulation material is applied separately to system components when building a pipeline from the ground up. The heat insulator is cut into appropriate segments, stretched over the pipeline, and fixed (usually with brackets or adhesive tape) to complete the insulation of the highway that is already equipped.

Insulating the square footage of your home with foamed polyethylene can significantly improve comfort and energy efficiency. With its exceptional thermal insulation qualities, this adaptable material will help keep your house cool in the summer and warm in the winter.

One of the main advantages of using foamed polyethylene is that it is easy to install in different parts of your home, such as the walls, floors, and ceilings, due to its lightweight and flexible nature. Its adaptability to uneven surfaces guarantees a tight fit, reducing heat loss and optimizing energy efficiency.

Additionally, foamed polyethylene resists moisture, which is essential for preserving the integrity of the insulation in your house over time. Foamed polyethylene performs for a long time despite being exposed to moisture, unlike conventional materials like fiberglass that can break down.

The durability of foamed polyethylene is an additional benefit. After installation, it needs little upkeep and is resilient to normal wear and tear. This will ultimately save you time and money by removing your concerns about insulation deterioration and the need for frequent replacements.

To sum up, adding foamed polyethylene to your home insulation plan can have a number of positive effects, such as increased comfort, lower energy costs over time, and better energy efficiency. Foamed polyethylene is a smart choice for insulation, whether you’re building a new home or remodeling an old one. It will improve the comfort and sustainability of your living area.

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Foamed polyethylene

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Michael Kuznetsov

I love to create beauty and comfort with my own hands. In my articles I share tips on warming the house and repairing with my own hands.

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