Which profile is better to choose plastic windows from? Types of window profiles and their characteristics Types of PVC profiles for plastic windows

“Which window profiles are the best?” – a question asked by everyone who wants to finally install energy-saving windows in their home. However, despite the external similarity of all structures, inside all the profiles are completely different, some of which do not at all comply with SNiP RF and are not recommended for installation in residential premises. First of all, when choosing a window system, you need to pay attention to the number of chambers and the thermal resistance coefficient (the higher, the better). The next important parameter of PVC windows is the provision for reinforcement - this increases the load-bearing characteristics of the structure, helps to increase the service life of the system and its resistance to plastic deformation. To make it easier for the buyer to decide on a quality window system, this rating was compiled. So, TOP 10 best companies and models of PVC window profiles:

aluPlast

Aluplast opens a rating of window profiles by quality. The company provides a good range of technical solutions for window systems. The latest developments that increase the energy efficiency of structures are embodied in the AluPlast energeto series. The Energeto 8000 model has excellent thermal resistance when installing triple glazed windows - 1.27 m2*C/W. According to the manufacturer, if the structure is not reinforced with steel (this reduces the load-bearing capacity), its thermal conductivity is significantly reduced, reaching a thermal resistance coefficient of up to 1.67 m2*C/W.

Deceuninck

Deceuninck is ranked 9th in the ranking of PVC profiles. The Belgian company has been producing window blanks from polyvinyl chloride for about 40 years at production facilities located in Europe, Asia and North America. The flagship of all Deceuninck lines is the 84mm Eforte model. This system is recommended for installation even in the northern latitudes of Russia due to the high coefficient of thermal resistance - 1.1 m2*C/W. The service life of Eforte is 30-40 years, subject to a temperature range of -60 to +75 degrees Celsius.

Proplex

The Russian company Proplex takes 8th place in the ranking of window profiles in 2018. All Proplex products are manufactured in Russia, so prices for finished products from this profile are much lower than imported analogues. Proplex produces 5 different window systems: 2,3,4,5-chamber. For installation in dachas, loggias and non-residential premises, we recommend the two-chamber Proplex Outline - the cheapest design with a thermal resistance coefficient of only 55 m2 * C/W. A more reliable system recommended for installation in apartments and residential premises is the four-chamber Proplex Comfort with a thermal resistance of 0.8 m2*C/V, which fully satisfies the requirements of SNiP RF.

Kaleva

The seventh place in the ranking of PVC window profiles is occupied by the Kaleva brand. The company produces a dozen different models, each of which has its own advantages and disadvantages. The most inexpensive option with everything you need is Kaleva Standart - this is a four-chamber profile with the possibility of reinforcement with steel and a built-in double-glazed window filled with inert argon gas, which has very low thermal conductivity. The Kaleva Titan Plus five-chamber window system is the company’s most heat-saving and noise-reducing design. Feature of Titan Plus: in addition to the main two-chamber 40mm insulation package filled with argon, blinds and another external glass are built into the system - thus, this model provides a degree of insulation incomparable with other analogues, thanks to the insulation package with three independent air partitions, two of which are filled with argon.

Montblanc

Montblanc (pronounced MONBLAN) occupies a leading position in the 2018 ranking of plastic profiles for windows in terms of price-quality ratio. Mont Blanc is an Austrian company that has been producing low-cost, high-quality profiles for translucent structures for more than 15 years. Due to the opening of the Mont Blanc industrial plant in the Moscow region in 2001, the company gained wide popularity in Russia. The company produces several lines of window systems: Montblanc, Reachmont, Goodwin and ECP. All products have a guaranteed service life of 40 to 60 years, and an installation width of 58 to 70 mm, except for the eighty-millimeter Montblanc Grand with six air compartments. We recommend for installation a four-chamber Montblanc Quadro system with a thermal resistance coefficient of 0.8 C/W per m2 - this is a high indicator that meets the requirements of GOST and Building Codes in many regions of the Russian Federation.

Salamander

The TOP 5 rating of profiles for plastic windows in 2018 is opened by one of the most expensive brands in the rating. The company has three different systems in its range: Salamnder 2d/Streamline/BlueEvolution. The most budget option is considered to be a three-chamber 2D with the possibility of reinforcing the internal chambers with steel. The wall thickness of Salamander 2D is: outer 3mm, rebated 2.5m, and inner 1mm - this provides good noise reduction (up to 46dB) and high energy efficiency class A+. This model is designed for installation of single-glazed windows. Salamander BlueEvolution is the next model recommended for installation in any region of Russia. BlueEvolution is the only profile available on the Russian market (meaning at a reasonable price) with a maximum width of the built-in double-glazed window - 60mm (if desired, you can install a three-chamber double-glazed window). Salander BlueEvolution is ideal for the continental climate of Russia: it protects from heavy rains, effectively maintains the temperature even at -40 degrees, and reliably resists drafts, thanks to the elastic rubber seal.

KBE

4th place in the rating of PVC window profiles belongs to the German manufacturer KBE. The names of the KBE rulers are banally simple and depend on the profile width: KBE 58/70/76/88. As anyone planning to replace windows should know, the wider the system, the more chambers it has, which means the heat-saving indicators of such a design are obviously high.

The optimal option for installation is the KBE76MD model - this is a six-chamber design made using greenline lead-free technology from recycled polyvinyl chloride. Recycling PVC allows you to “kill” two birds with one stone: recycle PVC waste and save on the cost of raw materials, which directly affects the retail price of the product.

The most important thing in greenline technology from KBE is the complete preservation of the physical and mechanical properties of the material, that is, primary processed raw materials are no different from recycled materials. The best product from KBE is considered to be the 88 mm KBE AD made using greenline technology: this model has an outer wall thickness of 3 mm and 6 independent air compartments inside with the possibility of aluminum reinforcement - all this provides an absolutely high level of thermal efficiency and noise reduction.

VEKA

The bronze medalist in the ranking of the best PVC window profiles goes to VEKA. VEKA offers 8 class A models with an outer wall thickness of 3mm. The most economical solution is VEKO Euroline: a design with three air chambers designed for glass units up to 24 mm (usually two glasses - one chamber), the sashes and frames of which can be reinforced for greater system reliability.

The optimal solution in terms of price and quality for offices and apartments will be the energy-efficient A++ class VEKO Swingline series: 5 independent air chambers with an outer wall thickness of 3 mm will ensure warmth and comfort in the room even on harsh winter evenings. The most expensive and massive specimen is VEKO Alphaline. This model is equipped with six air compartments with a total width of 90mm - these are the most heat-saving windows from VEKO in which you can install double-glazed windows up to 50mm thick (3 glasses) and enjoy peace and comfort all year round.

WDS

WDS ranks second among the best profiles for plastic windows in 2018. The manufacturer has several product lines in its assortment, each of which differs in noise reduction coefficient, heat saving and the number of cameras: WDS 400/500, WDS 4/7/8 Series. The optimal price-quality ratio is the Class A 60mm WDS4 model, equipped with 4 independent air chambers and the possibility of aluminum reinforcement up to 1.5mm. For northern latitudes, it recommends installation of the WDS8 series: a six-chamber metal-plastic profile with the ability to install a two-chamber double-glazed window up to 44 wide - this model retains heat 2.5 times more efficiently than the WDS400/4Series.

Rehau

Rehau is the leader in the rating, the best profile for plastic windows in 2018. The company's product range consists of 7 types of profiles with different numbers of air chambers, design widths and levels of sound insulation. The Rehau Euro-design series is an affordable and high-quality three-chamber profile with a thickness of 60mm, so it is recommended for installation by those who do not want to overpay. For lovers of sound sleep, Rehau Intelio will be a real find: a five-chamber profile 86mm thick with a noise reduction coefficient of 36dB (without double-glazed windows).

In cold climate zones, the 86 mm Rehau Geneo will help save up to 80% of heat: the six-chamber design ensures high tightness, maintains a colossal gap between the temperature amplitudes in the room and outside the window, and also creates reliable protection from drafts, thereby maintaining comfort and coziness in indoors throughout the winter, even at -60 degrees. According to the manufacturer, all Rehau products have a minimum service life of 40 years, and some models even 60 years.

Currently, the market for windows made on a PVC basis offers a wide range of different products. In order to attract buyers, companies are developing new types of double-glazed windows, and also use various types of profiles from which plastic windows are made.

In this regard, the consumer has reasonable questions: which window profile to choose and what will serve as the criteria for its selection?

When choosing a profile used in the manufacture of plastic windows, you must be guided by the following criteria that determine the purpose of the window and its operating conditions:

1. The ability to provide the required level of heat and sound insulation of the room where it is planned to install a window of this design.
2. The quality of the material used.
3. Profile class.
4. Possibility of installing double-glazed windows of various designs.
5. Geometric dimensions of the profile (width and height).
6. Availability of reinforcement.
7. Possibility of installing additional elements.
8. Conditions of use and maintenance.
9. Manufacturer's brand and its reliability.
10. Price.

In practice, a PVC profile is used, which has a different number of chambers in its design, which ensure the ability of this structural element to retain heat indoors and maintain the required level of sound insulation.

Structurally, this is expressed in the division of the internal space into several air chambers through the installation of partitions. There can be from three to eight such chambers (air cavities), of which the most popular among household consumers are three and five chamber ones.

By class, PVC profiles are classified as:

• Class “A” – wall thickness from 3.0 mm.
• Class “B” – wall thickness from 2.5 to 3.0 mm.
• Class “C” - wall thickness is not standardized.

Window profile materials

In the manufacture of windows, various types of profiles can be used, both in terms of its design and the material from which it is made.

It could be:

• Tree.

This is a natural and environmentally friendly material that has always been widely used in the manufacture of windows.

Currently, due to the advent of new technologies and the high cost of natural raw materials, it is used less widely.

Coniferous trees are used in the manufacture of cheaper structures, but, nevertheless, they are still more expensive than products made from various types of plastic and some types of composites.

• Aluminum.

Pure aluminum is not a very good material in terms of its use for the manufacture of window blocks. The reason for this is its high thermal conductivity and low elasticity.

In this regard, aluminum faucets are rarely used in their pure form for these structural elements, but in combination with polyvinyl chloride materials they are an excellent component of such products.

• Fiber composites.

Fiber composites are fiberglass made from a reinforced profile and a fiberglass composite.

This material is distinguished by good heat-insulating properties and strength indicators that exceed those of wood and metal, respectively.

The disadvantage that determines its rather narrow distribution is that under the influence of the external environment (precipitation, sunlight, etc.), this material delaminates.

When using a composite made from carbon fiber, this disadvantage is absent, but in this case the product is very expensive.

• Metal-plastic.

The use of aluminum, which serves as a frame in the manufacture of window profiles and plastic, made it possible to create a wonderful tandem of materials, which made it possible to combine their advantages and create a durable product with good thermal insulation properties.

Metal-plastic profiles are currently widely used in the manufacture of window blocks of various designs.

Selection of accessories

The choice of fittings is an important point when manufacturing and equipping a window, no matter how strange it may seem at first glance. In order to make the right choice, you must:

• Familiarize yourself with the types and purposes of fittings.
• Choose the most reliable manufacturer that produces high-quality products (based on user reviews).
• Determine the needs of various types of fittings and their technical characteristics.
• Determine the relationship between price and service life of the products.

The configuration and type of fittings for each specific window is individual, which is determined by its design and the method of opening the sashes (right or left, sliding or hinged type, blind or tilt-and-turn design, etc.).

The standard package of a window made from PVC profile includes the following elements:

• Window hinges (bottom and top).
• Compensator.
• Protective mechanism (fuse) against slamming.
• Devices for lifting window sash.
• Retainers.
• Brackets.
• Tilt-and-turn mechanism.

In addition to the products listed above, the kit may include window sash rotation limiters, slot ventilators, mosquito nets and locks that ensure the window is closed from the inside.

In the manufacture of fittings, various metals and their alloys are used, which characterizes their strength and reliability. On the outside, the fittings are coated with anti-corrosion paints and varnishes.

The criteria for choosing accessories are:

• Wear resistance.
• Resistance to external influences.
• Availability of warranty period and certificate of conformity.
• Appearance (aesthetics) and ease of use.

Choosing a plastic window manufacturer

When the user is faced with a question related to the choice of plastic windows, in addition to the technical components that determine the characteristics of the window (the type of profile and the material from which it is made, the type of double-glazed window, the availability and quality of seals and fittings), an organizational component also appears - which manufacturer’s windows to choose.

A large number of large and small companies of various forms of ownership operate on the domestic market for such products. However, the main manufacturers of metal-plastic profiles are only a few companies, whose products have their own inherent advantages and disadvantages; below are the most popular of them.

KBE (Kunststoffproduktion für Bau und Elektrotechnik), Germany

The KBE company operates in different countries and on different continents. In Russia, this company has representative offices in many regions; the production of metal-plastic profiles is located in the Moscow region. The representative of the company in Russia is ZAO Profine RUS (Moscow).

The advantages of KVE products are:

• High rates of heat and sound insulation.
• Wide operating temperature range.
• The presence of a ventilation system that ensures that glass units do not fog up.

The disadvantages include:

• High price.
• White plastic may turn yellow when exposed to sunlight.

Rehau, Germany

The Rehau company operates in different industries and in different countries around the world. One of the areas of activity is the production of translucent structures, including metal-plastic profiles.

The company's central office for Eastern Europe is located in Moscow, and representative offices are in the cities of St. Petersburg, Voronezh, Nizhny Novgorod, Samara, Yekaterinburg, Rostov-on-Don, Novosibirsk, Krasnodar, Irkutsk, Khabarovsk and Simferopol.

The advantages of Rehau products are:

• Strength.
• Large range of different profile types.
• Good performance in terms of heat and sound insulation.
• Frost resistance of products.

• High price.
• Limited height of sashes on manufactured products.

"PROPLEX", Russia

"PROPLEX" is one of the first domestic enterprises that began working in the market of metal-plastic windows through the full cycle of their production.

The advantages of products manufactured at this enterprise are:

• Relatively low cost.
• Long service life.
• They are adapted to operating conditions in Russia.

The disadvantages are:

• There is no international quality certificate.

VEKA AG, Germany

In Russia, the German company is represented by its branch, the subsidiary VEKA Rus, whose head office and production are located in Moscow. In addition, the company has representative offices in a number of regions of our country.

The advantages of VEKA products are:

• Wide selection of models.
• High technical performance (heat and sound insulation).
• Durability.
• The use of special rubber-based seals that are not afraid of low ambient temperatures.

The main disadvantage is the high cost.

Montblanc, Russia

The Mont Blanc company has been successfully operating in the PVC products market since 2000. The head office is located in Moscow, and factories are in Elektrostal, Moscow Region, and Krasnoyarsk.

The advantages of the products manufactured by this company are:

• Low cost.
• Adaptation of products to operating conditions in our country.
• Well executed design.
• Large selection of models.
• Strength and durability of products.

The disadvantages are:

• Lack of international quality certificate.
• Low quality of fittings used.
• Possibility of odor from the type of sealant used.

Which profiles are most often chosen?

The type of profile chosen depends on the purpose of the window and its operating conditions. In addition, another important factor influencing the choice is the service life and cost of the product.

When choosing, there are always personal preferences for a particular brand, as well as the presence of representative offices of the manufacturer in the region of residence of the potential buyer. In the regions of our country, the products of various companies are popular, which is characterized by the presence of a similar type of production and competition between manufacturers.

For installation in residential buildings, the greatest demand is for 3- and 5-chamber metal-plastic profiles with a width of 58.0 and 70.0 mm, respectively. For northern regions, 6 and 8 chamber profiles with a width of 90.0 mm are recommended.

It is not recommended to install in residential buildings plastic windows made from a profile intended for industrial buildings and facilities, for which there should be appropriate markings on its surface (OBJECT, object, engine, Tender, etc.).

In addition to the fact that when choosing a window you need to be careful and thoroughly familiarize yourself with the type and design of the profile, glass unit and fittings, you also need to take care of the high-quality installation of the purchased product. Incorrect installation can negate all the advantages of a window made from a metal-plastic profile.

Miser pays twice

The cost of windows from the profile of well-known brands is a priori higher than other manufacturers. Which profile is better to choose for a plastic window? Is it worth “overpaying” for a well-known brand or can you save money?

Which profile is better to choose for windows – brand or non-brand?

The word “brand” is associated among buyers with high quality that can be trusted. The brand's reputation is not just an empty phrase, it is always backed by solid investments in scientific research, first-class equipment, high-quality materials, employee training and communication campaigns. No self-respecting manufacturer will invest in advertising a product whose quality is not certain.

The window market is highly competitive. In the fight for the client, price is increasingly becoming the only argument, and window manufacturers are more willing to offer an economy class profile.

“It’s the same thing, only cheaper, without overpaying”– can be heard in sales offices. Are all profile systems really the same and the difference lies only in the promoted brand?

If the choice of plastic windows is limited only by the price factor, then the result will be obvious - the buyer will choose the cheapest option and other arguments will be powerless. Operating only at low cost is not an approach for thinking people who know how to count their money. Why are windows from well-known and reputable profile manufacturers more expensive? What can manufacturers save on for the sake of low cost? Which profile is better?

What is a window profile and what is its role in a window?

First, let's look at what a window profile is and what role it plays in a window. A window profile is a plastic frame and window sash into which steel reinforcement, double-glazed windows, fittings and sealing are installed. The main task of the PVC profile is to give shape and maintain a strong frame of the window structure. The wider the profile, the greater the options the window can have - better sound insulation, safety and heat conservation.

Which window profile is better to choose – what do manufacturers save on?

The basis for the quality of any product, no matter whether it is bread or a window profile, is high-quality ingredients and adherence to production technology. Of course, any manufacturer is interested in reducing production costs. But well-known and proven brands cannot reduce the cost of the recipe at the expense of quality.

Laboratories of large manufacturers are constantly working to improve the mixture. It is impossible to create a recipe once and for all - new technologies appear, suppliers of raw materials change, and product requirements become more stringent. Any change in recipe from a major manufacturer is confirmed by comprehensive testing.

A decrease in the composition of expensive components - PVC-S, impact resistance modifiers, titanium dioxide (color catalyst) leads to a decrease in the durability of the profile. It happens that a window does not survive the first frosty winter or becomes deformed on a hot day.

● Brittleness or fluidity instead of strength – savings on formulation

To reduce the cost of a window profile, manufacturers most often increase the content of hydrophobic chalk from the permissible 8 parts to 30, and sometimes even up to 40, to the detriment of the polyvinyl chloride content. This saving leads to increased brittleness and the appearance of cracks on the profile or at corner welds. Cracks on a fragile window profile may appear both during transportation and 1-3 years after installation of the window. There is only one way to eliminate the defect - by replacing the window.

Replacing expensive polyvinyl chloride with monosyllabic acids in a PVC profile makes the profile too plastic. When heated in the sun, it can “melt”, irreversibly losing its shape. The result is unopenable, jammed sashes, cracked double-glazed windows and the need to replace the window.

● Window profile turns yellow – saving on additives

Plastic windows firmly occupy a leading position. They are distinguished by a high level of heat and sound insulation, and also provide the opportunity to choose fittings, window opening method and profile color. You can also choose a double-glazed window with the required number of cameras. But few people think that it is the window profile that ensures the strength and durability of the entire structure. In this article we compare plastic window profiles with different characteristics and manufacturers.

General information about the profile of plastic windows

On average, the profile thickness of plastic windows varies from 58 mm to 86 mm, but some companies produce products up to 127 mm wide.

Its interior is hollow, but is divided by bridges that create several air chambers. A special technical calculation determines their dimensions and location. The wider the profile, the greater the number of chambers in it, increasing the heat-saving properties. Another characteristic of the profile system is the filling width, which determines what type of double-glazed windows can be installed in the profile. They come in single- or double-chamber types, the width of the glass in a standard double-glazed window is 4 mm (grade M1).

Each cavity has its own purpose:

• for water drainage;
• fastening accessories;
• responsible for strength, etc.

The color of the profile can be varied; painting is applied in several ways:

• coextrusion method - multilayer films create a kind of barrier that allows the product to withstand dynamic loads without damage;

• lamination - with imitation texture, for example, marble or wood;
• monochromatic coloring.

Characteristics of PVC profiles for plastic windows

Material

• This product is made from a type of plastic - white polyvinyl chloride.
• The material is highly resistant to chemical attack by alkalis, solvents, acids and mineral oils.
• It is harmless to humans and the environment.

• Due to its distinctive properties, polyvinyl chloride makes it possible to produce frames for double-glazed windows not only in rectangular or square shapes, but also in the form of arches, triangles, circles, and so on. Thus, giving absolutely any simple or complex configuration to the window, allowing even the most non-standard idea of ​​designers and architects to become a reality.

Design

The inner part of the plastic profile body is divided by longitudinal partitions, in turn they form cavities (air chambers). The minimum number of chambers in a profile is 3, the maximum is 8. The number of chambers determines the degree of thermal insulation and sound absorption of the window; the more air cavities, the higher these indicators. It should be noted right away that 3- and 5-chamber profiles are popular.

Reinforcement

To provide rigidity, the profile is additionally reinforced. The metal frame provides the necessary structural strength and reliability during operation of the window. Galvanized steel is used to reinforce the profile, so it does not deform due to temperature changes or other environmental influences.

• L-shaped type of reinforcement - a metal insert is installed along two walls;
• U-shaped type of reinforcement, where metal strengthens three walls;
• Closed type of reinforcement - a metal insert is located along four walls.

For window structures that have double-glazed windows up to 1900 mm in height, a U-shaped reinforced profile is suitable. However, for plastic windows of large dimensions, for example, for a loggia or balcony, a profile with closed reinforcement is required.

Profile class

The thickness of the profile walls determines whether it belongs to a certain class:

• Class A - the thickness of the profile walls must be at least 3 mm;
• Class B - profile where the wall thickness is from 2.5 mm;
• Class C - non-standardized wall thickness.

As a result, the width of the profile of plastic windows directly depends on its class. The higher it is, the correspondingly wider the profile.

Comparison of manufacturers of plastic window profiles

Many domestic and foreign manufacturers present their products on the Russian market. The leading positions in the ranking of profiles for plastic windows are occupied by the following companies:

• Germany - REHAU, VEKA, KBE, SALAMANDER, SCHUCO, KOMMERLING;
• Slovakia - INTERNOVA;
• Korea - LG CHEM;
• Belgium - DECEUNINCK;
• Russia - MONTBLANC and PROPLEX.

VEKA

• The profile is produced using German technology in Russia, they always correspond to class A, suitable for all regions, with any climate.

• BEKA profile systems are presented in 8 types, the installation depth ranges from 58 to 90 mm, and the number of chambers varies from 3 to 6. As a result of all the improvements, this profile is reliable, environmentally friendly and aesthetically pleasing.

REHAU

• World famous profile from a German company.
• She presents these products from economy to elite class, taking into account all weather conditions.
• Mounting width from 60 to 86 mm, number of chambers - from 3 to 6.

• Windows with REHAU profiles are distinguished by a high level of sound insulation (class 5), good thermal insulation, and can be equipped with gray seals if desired.
• Excellent value for money and quality.

SCHUKO

This company is equipped with modern equipment, uses quality materials and is staffed by qualified personnel. Thanks to this, it produces a full line of profiles, fittings and seals.

• Window profile designs are available in widths from 60 to 82 mm, the number of chambers is from 3 to 8.
• SCHUKO windows are easy to use and have good burglar-resistant properties.

MONTBLANC

There are 4 manufacturing plants producing profiles in Russia.

• The Russian-Austrian company is equipped with a production base where the latest technologies are being developed and implemented.

• The Mont Blanc line contains 6 types of profiles, where the installation width ranges from 58 mm to 120 mm, chambers - from 3 to 6.
• The durability of the profile system (60 years) is achieved using specially developed performance characteristics for harsh climates.

PROPLEX

• The plant, located in Podolsk, produces profiles using German equipment using Austrian technologies.
• These products are produced in widths that can range from 58 mm to 127 mm, chambers - from 3 to 6.
• The original recipe allows us to produce high-quality profiles characterized by impact strength and special whiteness.

You can also compare the characteristics of plastic window profiles using the tables below.

Profiles of the German company KBE

It is believed that German profiles of plastic windows are superior to the products of other manufacturers in terms of quality, whiteness of color, and technical characteristics. They do not lose their properties even over a long service life and can withstand almost any dynamic loads and significant temperature changes (from -50°C to +50°C).

The KBE company produces and supplies 2 types of the most popular profiles: KBE Etalon and KBE Expert.

KBE Etalon - three-chamber profile

• The installation width is 58 mm;
• width of front walls - 3 mm;
• the thickness of the glass unit can be up to 34 mm;
• 3 chambers in the frame, sashes, impost (horizontal and vertical window bars);
• can be used in harsh conditions (-60°C);
• service life - 40 years;

Advantages:

• with a profile width of 58 mm, it has 3 air chambers, their size and optimal position provide heat transfer resistance. Such windows have a high degree of tightness, which exceeds the existing GOST requirements by 5 (!) times, which guarantees the complete absence of dust and drafts in the room;
• two sealed sealing gaskets provide excellent sound insulation (up to 46 dB). The profile is additionally equipped with horizontal lintels, thereby increasing the strength of the lock when closing the window;
• The KBE profile has stiffening ribs that provide additional strength to the window structure. Also, special stops can increase rigidity, with the help of which the precise location of the reinforcing metal insert is achieved.

KBE Expert - five-chamber profile

• Installation width is 70 mm;
• width of front walls - 3 mm;
• glass unit thickness is up to 42 mm;
• 5 chambers in the frame and sashes, 3 or 4 in the impost (horizontal and vertical window bars);
• Suitable for use in harsh conditions (-60°C);
• sealing contours correspond to class A;
• service life - 40 years;
• Environmentally friendly materials are used in production and do not contain lead.

Advantages:

• The five-chamber structure allows for better thermal insulation values; this profile is capable of retaining heat 20% more than typical three-chamber systems. You can achieve excellent sound insulation by installing wide double-glazed windows with a 70 mm profile;
• The 13 mm groove of the profile allows you to install anti-burglary fittings, thereby ensuring the security of the room;
• the KBE Expert profile has additional horizontal jumpers, thanks to which the handles and hinges will be securely fastened;
• When installed, the mounting seam becomes approximately 20% wider, in turn allowing for additional insulation.

Estimated cost of windows from KBE profile

An important factor when choosing a particular double-glazed window is its price. It is often decisive, but high quality German window profiles cannot be cheap. Below is the approximate market value in Russia.

• On average, a single-chamber double-hung window with dimensions of 140x130 cm, in which one sash is fixed and the other is tilt-and-turn, will cost:
  • from a 58 mm profile from RUB 7,500,
  • from 70 mm - from 10,000 rub.

• The price of a two-chamber three-leaf window measuring 140x203 cm, in which the first sash is rotary, the central one is blind, and the third is tilt-and-turn, will range from:
  • from 58 mm profile 13,000 rubles;
  • from 70 mm 14500 rub. and higher.

• When purchasing a balcony block with an opening door measuring 210x67 cm and a blind window - 140x136 cm, you will have to pay at least:
  • from a 58 mm profile 11,000 rubles;
  • from 70 mm from 13,000 rub.

What to look for when choosing a plastic profile with double-glazed windows

In order to determine what profile thickness is needed, you should have basic knowledge about the double-glazed window, because up to 70% of heat losses occur through it.

This transparent element consists of 2 or more glasses that are tightly connected to the frame. A chamber (air gap) is formed between them, filled with rarefied air or an inert gas, such as argon or krypton. This kind of filling is used in the production of energy-saving double-glazed windows.

A single-chamber double-glazed window is a design of 2 glasses of 4 mm each and an air gap of 16 mm, in abbreviated form it is designated 4-16-4. Thus, its installation width is 24 mm. The design, equal to 36 mm, is obtained from a two-chamber double-glazed window, which consists of 3 glasses of 4 mm each and 2 layers of 10 mm each - 4-10-4-10-4.

Consequently, an appropriate profile is selected for the required double-glazed window. For example, the optimal solution for an ordinary apartment or house would be a 5-chamber profile with a 70 mm installation width and a 30 mm double-glazed unit, where a heat-reflecting coating should be applied to one glass.

If the windows face the north side and there is a busy road nearby, then the following option is suitable: a 5-chamber profile with a depth of 86 mm, complemented by a 32 mm double-glazed window with a protective noise-insulating film.

When a balcony (loggia) is combined with an adjacent room or it is planned to make a small office (rest room) out of it, then the profile should be 5-chamber with an installation depth of 86 mm, and the double-glazed window should be energy-saving, two-chamber with a width of no less than 40 mm.

For simple insulation of a balcony, a 60 mm 3-chamber profile and a 30 mm single-chamber double-glazed window are suitable.

But it’s not enough just to choose the optimal PVC profile and double-glazed window. It is equally important to entrust the installation of the finished window to professionals. Otherwise, no matter how expensive the design, poor-quality installation will cancel all its high characteristics.