Construction of a country house made of wood, principles of warming a wooden and frame house: similarities and differences. Application and installation of foil insulation Foamed polypropylene with foil coating

To use one of the most effective heat insulators, you need to buy foamed polypropylene with foil in Yekaterinburg. It is available in any quantity to different consumers at a minimal price. Therefore, foil foamed polypropylene can be bought by both private developers and large construction organizations.

The synthetic material became a worthy competitor mineral insulation. Its distinguishing feature is the presence of a layer of foil. It is covered with a foamed heat-resistant layer, consisting of grains that are tightly fused together. It is thanks to the foil layer that this material has unique properties. Foil material is produced by extrusion. As a result of this manufacturing method, insulation with a porous structure is obtained.

Advantages of expanded polypropylene with foil

The additional layer of foil has made this material one of the most sought after insulators on the market. It has the following benefits:

1. The lowest coefficient of thermal conductivity.
2. Increased moisture resistance.
3. High strength.
4. Good elasticity.
5. Excellent resistance to deformation.
6. Low flammability and no release of dangerous toxins when exposed to fire.
7. Good sound absorbing ability.
8. Easy installation.
9. Durability.
10. Can be used at both low and high temperatures.
11. Reflective ability.

In addition, foil-wrapped polypropylene foam has good resistance to corrosion. This material also prevents the propagation of vibration.

Application of expanded polypropylene with foil

Foil material with a porous structure is used not only as a heater, but also as a waterproofing various premises in which the humidity is high. It can be baths, steam rooms, various saunas and so on.

Foamed polypropylene with foil is also used during the decoration of balconies and loggias. It is also used in the installation of various pipelines and ventilation systems.

During laying, such material is mounted end-to-end. This is another one of his distinguishing feature. In this case, the installation must be carried out with the reflecting side inside the premises. For connection separate parts material using aluminum tape.

Over the past decades, the market for sound and thermal insulation materials experienced a real boom. Appearance huge amount synthetic insulation made serious competition mineral materials, breaking their traditional monopoly in this construction industry. One common synthetic insulation is expanded polypropylene, which is also called porous polypropylene, polypropylene foam, or PPP for short.

Due to its porous structure, it retains heat well, absorbs sound, dampens vibrations and, at the same time, has a low specific gravity. Due to the fact that the pore structure of the material is closed, it also exhibits waterproofing properties. To increase the water-repellent performance, some hydrophobic coatings (foil, lavsan) can be applied to polypropylene foam sheets.

Production of porous polypropylene

The production process of expanded polypropylene from ordinary polypropylene consists of several stages:

• granular polypropylene is mixed with plasticizers, antistatic agents, flame retardants and other agents, depending on which special properties must possess the final product;
• one of the added agents is toluenesulfonylsemicarbazide, which provides the foaming process of the material when heated to 240 degrees Celsius;
• as a result heat treatment many small balls are formed, which are then fused into a single mass under the influence of hot steam;
• the material acquires its final form in the process of extrusion through special slotted heads;
• sheets of the resulting polypropylene foam gain strength and hardness within two days.

Material properties

The resulting material has a density of 40 kg/m3. The coefficient of thermal conductivity of polypropylene foam is 0.0344 W / (m3 * K), tensile strength - 1.35 MPa, compressive strength - 0.183 MPa.

Expanded polypropylene, almost the same as ordinary, retains its specifications in the operating temperature range from -40 0С to +150 0С. The material has low flammability, and does not emit toxic gases during combustion. Considered environmentally safe and allowed to come into contact with food products. It has high rates of vibration and heat insulation, as well as noise absorption. Expanded polypropylene is ideal for processing hand tool. Easy to install. The service life of the material is at least 20 years.

Due to the closed-cell structure, the foamed polymer has higher strength characteristics than conventional polypropylene.

Due to the low specific gravity, the financial savings when using PPP is 15% or more. Porous polypropylene has the lowest thermal conductivity among the closest analogues. Also, the material surpasses its main competitor, polyethylene foam, in a number of other the most important characteristics. It has higher hydrophobicity and less thermal shrinkage.

Types and standard sizes of polypropylene foam

On the market building materials along with the usual foamed polypropylene, composites made on its basis have become widespread. One of the most popular composite materials is considered EPP, which consists of sheets of polypropylene foam covered with layers of lavsan fiber or foil. Sometimes ordinary (not foamed) polypropylene is used as a coating.

EPP sheet sizes vary from manufacturer to manufacturer. The material can be supplied in rolls 1.2 m wide and 2 to 10 mm thick. The length of the roll can be 15 and 25 meters. Expanded polypropylene sheet can have a thickness of up to 20 mm with sheet dimensions of 1x1 m, 2x2 m, 1.5x3 m and 1.5x4 m.

In its pure form, polypropylene foam has a white milky color. The color of the material may change when dyes are added during the production process. standard colors in addition to white, gray, blue and green are considered. When making individual order the manufacturer, as a rule, produces porous polypropylene of any shade according to the RAL catalog.

Application of expanded polypropylene

The properties possessed by polypropylene foam make this material in demand in various fields activities. The main areas of its application are:

• external wall insulation of existing residential and office buildings;
• the material can be used as a heat insulator for sandwich panels and in-wall cassettes of enclosing structures industrial buildings and structures;
• used as a sound-absorbing filler internal walls and partitions;
• due to the high degree of hydrophobicity, the material is successfully used as hydro- and thermal insulation in rooms with a high degree of humidity and a sharp change in temperature: in baths, saunas, steam rooms, showers;
• it is used as a vibration-insulating layer when installing a floor, including it is used in the construction of underfloor heating;
• used for soundproofing cars;
• composites based on expanded polypropylene are used to fill the filters of water treatment plants;
• made from polypropylene foam different kinds packaging containers;
• foil polypropylene is used for the production of thermos containers and boxes for transportation medical preparations in ampoules, flasks, test tubes;
• EPP is used as a cushion pad for bicycle and motorcycle helmets.

Porous polypropylene, both domestic and imported, is presented on the materials market. Products of domestic manufacturers are characterized by lower cost with sufficient high quality. At the same time, more expensive foreign materials have a very wide range of colors, thicknesses and sheet sizes.

Meet another synthetic polymer - ABS plastic- can be in .

They have good thermal insulation performance, they are multifunctional, ideal for insulating roofs and walls. Let's talk about the pros and cons of one of the foamed polymers - polypropylene.

Foamed polypropylene differs from other heat-insulating materials by a combination of insulating properties with a small specific gravity. The closed cell structure determined the increased strength of PPP among materials of its class.

To enhance waterproofing, as well as to increase the ability to absorb noise and vibration, manufacturers laminate sheet foamed polypropylene.

The process of creating porous polypropylene takes place in several stages:
- connection of polyPP with various additives (flame retardant, plasticizer, antistatic agent, etc.);
- high-temperature treatment (about 240°C) with the participation of a blowing agent - p-toluenesulfonylsemicarbazide. The result is individual small balls;
- treatment of the resulting substance with hot steam under high pressure. In the process, the balls are fused together;
- extrusion of the obtained mass of polypropylene (extrusion through a slotted die);
- a curing period of 2 days.

The advantages of polypropylene foam include:
- high resistance to corrosion;
- temperature resistance working temperature-40 to +150°C);
- wear resistance (up to 20 years of operation without loss of properties);
- environmental safety (possibility of contact with food products);
- Fire safety(moderately flammable, does not emit toxins when burned);
- ease of installation (depending on the thickness, it can be cut with scissors, a thermal string or a saw, fixed with small nails or epoxy/cyacrine glue);
- energy intensity of polypropylene (the surface heats up faster by 15-20% compared to other materials of the same class);
- increased heat transfer;
- high degree vibration, heat and sound insulation.

Polypropylene sheet in its pure form is rarely found on sale. Composite EPP is the most popular - in this case, the PPP is supplemented with a layer of foil or lavsan threads, or is located between sheets of ordinary polypropylene (i.e., lightweight PP).

Expanded polypropylene is often compared to polyethylene foam, the closest competitor in its class. But inexpensive foamed polyethylenes have a small resource in terms of durability. After a year of operation, they can lose up to 50% of their thickness and reduce the sound insulation index by 5–10 dB. As for polypropylene, during testing, such an indicator as thickness for 12 months of operation under a standard load of 2000 N / m² decreased by only 15%, while the stabilization period came after 1 month of being in conditions of full compression, and the quality of sound insulation remained almost unchanged.

These indicators have been identified by experimental studies of the physical, mechanical and acoustic characteristics of non-crosslinked foamed polypropylene and non-crosslinked foamed polyethylene in floating floor structures under long-term operation (for 12 months) under a standard load of 2000 N/m².

This is due to the fact that polyethylene foams do not have the ability to resist compressive loads, have weak molecular bonds and, unlike foamed polypropylenes, are more susceptible to aging.

The dynamic modulus of elasticity (the main indicator for this class of materials) for foamed polyethylene increases by 98% over 12 months of operation, which significantly worsens the noise insulation characteristics, while for foamed polypropylene this indicator increased by only 6%, which does not affect the sound insulation characteristics.

It is important to note one more parameter - the “impact index”, which for polypropylene was 22 dB and remained so after 12 months. This fact allows us to say that during the subsequent period given value will remain stable.

The impact noise reduction index for polyethylene foam decreased to 14 dB after 12 months. In other words, after 2–3 years of operation, the polyethylene foam cells “collapse” and the thickness decreases - accordingly, noise and cold are right there.

Compared to foamed polyethylene, it has a lower water absorption coefficient at high temperatures, a large margin of strength during deformation, and also conducts heat worse and is less subject to thermal shrinkage.

Due to these properties, expanded polypropylene is widely used throughout the world, mostly in construction. In addition, the material is also used in other areas, for example, in the manufacture of water treatment filters. It is used when installing insulation indoors and on pipelines with elevated temperatures.

The material is also used as a vibration damping pad in floating floor structures to improve airborne sound insulation.

Foil polypropylene is used for hydro- and thermal insulation of premises with high humidity: baths, saunas, steam rooms, etc.; laminated with lavsan is used when installing underfloor heating; composite - in treatment facilities and as a more cost-effective alternative to conventional polypropylene; regular - in production various forms and containers.

) refers to multilayer specialized materials reflective type, which are produced using polyethylene foam with foil (polished).

As a basis for creating such insulation, polyethylene foam is used with various indicators of density, thickness and even structure (strictly according to GOST).

Foiled aluminum is specially polished to a so-called "reflection factor" of 97%, and then applied by heat welding on one or both sides of the material.

1 Specifications

Foamed polyethylene materials have quite impressive technical, including compensatory, characteristics. The most important ones to get acquainted with are the following:

• Optimum operating temperature range from -40 to +120 degrees Celsius;
• Coefficient for the thermal conductivity parameter - 0.037 - 0.038 W / m * K;
• Noise absorption coefficient - dB(A) 32;
• The compressive strength limit is not less than 0.035 MPa;
• Fire safety group "G1";
• Appearance: exclusively white;
• Thickness of rolls of material: from 2 to 10 millimeters;
• Dimensions of material rolls: standard 1 meter wide and 50 meters long as in .

1.1 Types of material

Foil insulation based on polyethylene foam has several various types, which are systematized by letter marking.

The foil insulation itself is divided into the following types:

• Type "A". The product has a special aluminum coating on one side. It is most often used with other types of heaters, most often with foam plastic or styrodur;
• Sheet type "B". This product has an aluminum coating on both sides. The application is exclusively autonomous (according to GOST standards);
• Type "C". On one side, this type of product has a special aluminum layer, and on the other side, polyethylene foam itself with a moisture-resistant contact adhesive mixture on it. The application of the product is possible without the use of additional tools installation;
• Type "ALP" with . On the surface of aluminum on one side of the material is applied polyethylene film, what is he doing this product, based on GOST standards, laminated. The product is used in agriculture and, in more rare cases, for slightly aggressive environments;
• Sheet type "R and M". Compensation materials of this type have a special embossed surface and have a foil coating on only one side;
• Type "Super NET". Used to isolate networks. Such as pipelines, heating mains of various lengths and air outlets;
• Sheet type "Penofol AIR" with. Compensation products of this type have such technical characteristics that allow the use of this insulation to create air vent elements (according to GOST standards).

According to GOST standards, there is not only the insulation itself, but also a bundle of polyethylene foam, as well as a foam polyethylene substrate.

1.2 Scope

Specifications this material allow it to be used in a wide range of applications. Even soundproofing with polyethylene foam is possible. We are also pleased with its compensatory properties. In general, this material is applied to the following areas:

• Warming on the inside and outside walls various buildings, attics, various basements and even attics;
• Waterproofing and vapor barrier of baths and saunas, as well as, in more rare cases, showers;
• Roof insulation and so-called "warm floors";
• Insulation of pipelines and technical expansion tanks;
• Heat reflection of both domestic and industrial radiators ();
• Soundproofing and insulation of complex ventilation systems, as well as air conditioning and sewage systems.

1.3 Advantages and disadvantages

The characteristics of polyethylene foam with foil are quite high, therefore, relying on them, as well as on the features of the production of this material, the most serious advantages of the described product should be emphasized:

• Certification and GOST standards. The material, in addition, has a special conclusion from the epidemiological authority on its safety;
• Rodent resistance. Not a single creature can feed on this material;
• Convenience in transportation. Given that the insulation is made with thin layers, it is extremely easy to fold it into a compact form and then carry it in your hands or put it in the trunk of a car;
• Absolute fire safety. The material can ignite only at extremely high temperatures, rarely observed in domestic conditions;
• Ease of installation. It is possible to install the product as required without the use of special construction clothing and appropriate tools. You can get by with ordinary nails, adhesive tape and a stationery stapler;
• Excellent soundproofing and at the same time. This product, when installed on top of a frame of a certain design, is able to protect the room from acoustic and structural noise of the surrounding world;
• When using polyethylene foam, there is no need to additionally install vapor barrier materials, since this product initially has a small vapor permeability;
• Foamed polyethylene is extremely thin, especially in comparison with the closest analogues, but in terms of quality, with its subtlety, it is not inferior to them. The usual layer of 4 millimeters of this material is equal to 8 - 8.5 centimeters in quality and efficiency mineral wool or 3 centimeters of polystyrene foam.

However, any material in general, and any heaters in particular, in addition to their advantages, also have certain disadvantages. Among the disadvantages of foamed polyethylene with foil, such “misses” should be noted, such as:

• Softness. Polyethylene does not have the rigidity necessary for this kind of materials, therefore it is not suitable for finishing plastering works or for wallpapering. Just a little pressure on the material - and it sags;
• The insulation is difficult to fasten, the only exception is type "C". Alas, to install such a heater, you must additionally use various adhesive mixtures. Trying to nail the insulation is unacceptable, as this will worsen the thermal insulation efficiency;
• No matter how versatile and effective this insulation is, it is used for thermal insulation. external walls buildings only as an additional layer, in order to reflect the incoming thermal energy and protect the walls of the building from moisture.

Just three tips for laying foamed polyethylene will help to significantly reduce the time for carrying out this kind of work without the necessary knowledge.

1. A reflective insulation layer should be laid on the side where the heat source is located;
2. For the maximum possible reflection effect, the so-called " air space» measuring 1.2 - 2 centimeters on both sides of the insulator;
3. All mounting seams must be glued with construction aluminum tape in order to achieve the highest possible tightness and waterproofing.

In general, given the characteristics of this insulating material we can safely say that it meets the challenge and requirements of modern thermal insulation materials.

This material will effectively protect your home from cold, humidity and various extraneous noises.

At the same time, both the consumption of the insulation itself and the loss of space in the room where it is located will be reduced to an absolute minimum, which cannot but rejoice. In addition, foamed polyethylene is also distinguished by a relatively low price with a serious technical potential of this heat-insulating material.

2.1 The installation process of foam reflective insulation (video)

Foil insulation materials do not represent a two-ball structure, where the first layer is a polished foil with a thickness of 20 mKn, and the second layer is some kind of traditional insulation, which can be used as mineral or basalt wool(Isover, Rockwool), polypropylene (Izospan), expanded polystyrene, or polyethylene.

The combination of these materials makes it possible to obtain very effective technical characteristics of the insulation, which performs not only standard thermal insulation of walls, but also has shielding properties due to the foil, reflecting thermal energy back into the room.

Among high-quality foil insulation produced in accordance with the requirements of GOST, such as Isover, Isospan, or Rockwool, the thermal energy reflection coefficient is 97 percent, which makes them one of the most efficient materials for insulation on the market.

2.1 Foil polyethylene foam

The most demanded sample of foil polyethylene in the domestic market is Penofol. This insulation is produced in three main modifications - A, B, C.

• Penofol "A" - the most common version of penofol. This material has one layer of foil. Penofol A is widely used for wall insulation of residential buildings, pipelines and industrial equipment;
• Penofol "B" - this modification is distinguished by double-sided foiling, which allows you to effectively use the material in order to insulate the floors between floors apartment buildings, attics, and underfloor heating systems;
• Penofol "C" - insulation with foil on one side, and a self-adhesive surface on the other, like many. The presence of a self-adhesive layer greatly simplifies the installation of such thermal insulation.

With the growing popularity of penofol, which is caused by excellent technical characteristics, manufacturers have opened production of other modifications: with perforated polyethylene, with a reinforced structure, etc.

2.2 Foiled mineral wool

One of the longest-lived heaters on the market today. The leader of this category is Izover. The main difference between foil insulation based on mineral wool is its low density, which allows it to be mounted on any uneven surface.

In addition, Izover does not ignite even in direct contact with fire, which allows it to be used for thermal insulation of walls inside baths, saunas and other rooms with increased fire safety requirements.

Of all the foil insulation, it is Izover that has the lowest price, while performance characteristics this material is in no way inferior to analogues. Its only drawback to consider is big thickness material, from 10 to 15 cm.

2.3 Foiled polystyrene foam

Expanded polystyrene, presented on the domestic market by Isospan, unlike mineral wool, has a minimum thickness, but at the same time, the characteristics of this material allow it to easily endure temperature fluctuations from -170 to +170 degrees.

Izospan is the most popular option for thermal insulation of underfloor heating, and under-roof space. It is Izospan that has the most effective heat reflection.

2.4 Features of use

There is a basic rule for installing foil insulation inside residential premises. It lies in the need to equip free space between the lining of the insulation and the heat-insulating material itself.

The gap between them should be at least 15-20 millimeters. It is required due to the fact that due to prolonged heating, heated aluminum transfers its temperature to the back surface.

It is important that the heat transfer goes to the air in the gap between the cladding and the insulation, which will return back to the room, and not to warm the wall. To do this, the installation of foil insulation must be carried out with special crate suitable thickness.

Direct installation is carried out with a layer of foil inside the building, while the overlap of individual sheets should be about 15 centimeters. The joints are glued with a special insulating film.

2.5 Comparison of different types of foil insulation (video)