Differences standard and economy plastic windows. Classification of pvc window profiles. Estimated cost of windows from KBE profile

Hi all! Haven't written anything on the site for a long time! I am correcting myself :) Today we will talk about high-quality and safe class A windows, which are considered the highest class and even elite ones.

Glazing an apartment with plastic windows is a serious cost for a family. When choosing the “right” window company, they can become an investment in a comfortable and carefree life for a long time, eliminating additional costs (repairs, painting) for a long period.

Poor quality windows can, on the contrary, become a waste of money: their lifetime will be as short as that of ordinary wooden ones. How to evaluate a plastic window when buying? After all, at first glance, all windows are the same ...

As you know, an edible dish cannot be prepared from rotten products. So bad plastic does not produce a high-quality window. How good a profile is, for example, can be evidenced, for example, by international certificates of expert centers that independently check the quality of window systems.

In accordance with the European standard DIN EN 12608, PVC windows are divided into 3 classes: A, B, C.

Another standard that little is known to buyers of plastic windows in Russia is RAL, one of the most stringent, proven and respected industrial standards in Europe. Action RAL extends to components of a plastic window, such as a profile, accessories.

Speaking about the importance of this standard for the window industry, it is enough to cite one single fact: not a single manufacturer of plastic windows in Germany will use profiles for their production that do not contain the RAL Quality Mark.

This standard does not imply a different class of pvc windows: A PROFILE THAT HAS RECEIVED A RAL CONFORMITY CERTIFICATE MUST HAVE 3 MM EXTERNAL WALL THICKNESS, otherwise it will not receive this certificate.

It may seem strange, but control over the production of PVC profiles in Europe is carried out not by the state, but by independent experts. However, their court is stricter and tougher: their reputation is always at stake, and for an expert, this is the main capital. A window company that has a RAL certificate should be ready at any time for the visit of auditors and experts.

VEKA Rus became the first company whose Russian products successfully passed the test for compliance with the most stringent and proven industry standard - RAL.

Advantages of class A windows:

Higher resistance to heat transfer: the coefficient for class A windows cannot be lower than 0.75-0.8 m2x0C / W.
Higher sound insulation: PVC windows of the highest class A are able to muffle sounds up to 36dB.
Ability to withstand wind loads: Class A windows can easily withstand a wind pressure of 1000 kgf / m2 (to create such a load, the wind speed must reach 40 m / s or 144 km / h).
Better weather resistance. During operation for 40 years, the thickness of the outer wall decreases by 0.7 mm. Thus, for profiles of the economy series (class B), after 40 years of operation, the wall thickness will be 1.8 mm, which means the transformation of the window into a “house of cards”.
Protection from cold and noise. Save up to 25% on heating per month.
Longer period of safe use of the window. For a profile with an outer wall width of 3 mm, this period is 50 years. If a thin-walled profile window is subjected to a similar load, the service life of its corner joints is significantly reduced.
The strength of corner welded joints of class A profile windows is 15-20% higher than that of class B profiles.
Quality manufacturing also makes a significant contribution to the long and reliable life of your window. Only a company that has a modern factory with expensive and high-precision equipment and rich production experience can produce windows of high quality.
High-quality installation according to GOST - 60% of the operational properties of your window structures. Professional installation will prevent freezing, loss of heat in the room, save on heating, while enjoying the comfort in your house or apartment for many years.

Energy efficiency classes of VEKA plastic windows

Depending on the used profile system and the characteristics of the installed double-glazed window, a certain energy efficiency class can be assigned to the window. Let's consider two types of energy efficiency: winter (indicated by the pictogram "snowflake") and summer (indicated by the pictogram "sun").

Winter energy efficiency of windows is the ability of a window to prevent the penetration of cold into the room, which is especially important for most Russian regions.

From the side of the profile, this parameter is affected by its installation width (from 58 mm to 82 mm, the larger it is, the greater the obstacle that cold must overcome in order to penetrate the room), the width of the double-glazed windows and the presence of glass with a special coating.

Energy efficiency coefficients are given to windows if the reduced heat transfer resistance of the window is:

A ≥ 0.65 ≤ 0.8 m2 x °C/W
A+ > 0.8 ≤ 1 m2 x °C/W
A++ > 1 m2 x °C/W

Summer energy efficiency

The window can not only protect the room from the cold in winter, but also prevent it from overheating in the hot season.

To do this, it is necessary to use double-glazed windows, in the design of which glasses with a special coating are used.

Windows with such double-glazed windows receive an A + summer energy efficiency coefficient, windows with a regular package - class B.

Window durability (lifetime of safe operation)

For example, plastic windows made from the VEKA profile have the highest durability class A++. The basis for this classification are:

preservation of its functionality by the window when tested for the maximum possible number of opening cycles
preservation of the window dimensional stability according to the results of laboratory tests in climatic chambers, as well as according to the results of full-scale tests.

Burglary resistance

The burglary resistance classes of the window are given in accordance with the requirements of DIN V ENV 1627 1630. The necessary burglary resistance is ensured by an appropriate set of fittings and can be implemented within any European fittings program.

It should be noted that windows made from the VEKA profile, even in the standard configuration, have a higher burglar resistance due to the geometry of their reinforcement used in the frame and impost.

Source: dveriokna.org/14-okna/126-plastikovye-okna-a-klassa.html

Impact-resistant films protection class A0, A1, A2, A3

Shockproof glass class A0, A1 is installed on the following objects:

do not have significant material values and are under centralized or internal physical protection (industrial premises, grocery stores, restaurants, bars, institutions, offices). With the constant presence of material values near shop windows and windows, the stability class of protective glazing increases.

Shockproof glass class A2, A3 is installed on the following objects:

having material values of high consumer value, historical and cultural values and being under centralized or internal physical protection;
in operating rooms of banks, premises of government and authorities (if bulletproof glazing is not required), trading floors of jewelry, weapons stores, pharmacies;
in museums, art galleries (in the form of screens, showcases to protect individual exhibits in the exhibition halls).

Basic parameters of shockproof glass

Testing

The method consisted in determining the minimum mechanical strength of impact-resistant glass, resistant to impact by solid objects, when a steel ball of a specified mass and diameter is dropped from a certain height, which has a normalized kinetic energy at the moment of impact. The ball was dropped from the set height according to the table three times for each sample. Sample dimensions - 1100 mm x 900 mm.

Samples of impact glass were considered to have passed the test if none of them was pierced by a ball under the conditions according to the table, and at the same time the tested glass was assigned the appropriate impact resistance class.

Installing protective films on glass, for example, on windows, shop windows, glass visors, etc., allows you to solve the following tasks:

Glass armor (protection class K4, A1, A2, A3)
Shatterproof (similar to triplex)
Explosion proof
fire resistance
Heat saving
Sun protection (absorbs 99% of UV rays)
Increasing sound insulation

Glass armor

Protective films are usually installed where there is a direct threat of glass damage - accidental or intentional - by stones, bottles and similar objects, where there is a real threat of access to equipment or information by violent means.

A blow to the glass creates a hole in it approximately the same size as the impact tool, and in order to form a hole with a size sufficient for access to the inside of the room, a significant number of blows are required.

The protective film prevents theft by withstanding impacts that would immediately shatter the unglued glass into fragments. At the same time, even if the glass pasted over with a film is damaged, it still remains in the frame, and, as practice has shown, it delays the attacker or, in most cases, forces him to abandon his intentions.

Shatterproof

Shards of broken glass pose a serious threat to human health and sometimes life.

According to the statistics of domestic injuries, the share of severe and fatal injuries inflicted by them accounts for at least a third of traumatic cases.

No one is safe from them, and they happen for a variety of reasons: a naughty child did not notice the glass door, or a stone bounced off the wheel of a car, or a thoughtful adult slipped on a polished floor ...

Explosion proof

Films glued to glass reduce the risk of being hit by fragments, successfully withstanding even a blast wave. Damaged glass held by the film remains in the frame or falls out as a whole piece, and does not shatter into sharp fragments that can damage expensive equipment, household appliances, furniture, goods in the window, not to mention damage to health.

fire resistance

Usually glass cracks under the influence of temperature, and as a result, the influx of oxygen instantly increases the rate of fire spread by dozens of times. When applied to glass, the protective film forms a fire-resistant composition capable of containing fire for up to 45 minutes, which, according to the standards of the All-Russian Research Institute of Fire Defense of the Ministry of Internal Affairs of the Russian Federation, corresponds to fire resistance class II.

Under the influence of an open flame, a short surface burning is observed on the protective film without advancing the fire front. When the source of fire is removed, the flame is immediately extinguished.

A fire localized in this way will certainly cause much less damage, while no toxic fumes are generated. For example, a film 112 microns thick is capable of holding fire for 30 to 37 minutes (the film itself does not burn, it only melts), which corresponds to fire resistance class II.

Heat saving

One of the main advantages of films, which is taken into account in the design and construction, is low thermal conductivity. According to some reports, the use of films reduces heat loss by 35-40%.

In the cold season, films, depending on the type of spraying, can reduce heat loss by 16-35%, reflecting back into the room the heat that would otherwise go outside through bare glass. The films seem to equalize the cold and warm zones in the house, unifying the temperature inside the building.

Sun protection

Solar radiation is not safe. The ultraviolet range is that part of the solar spectrum that causes burns, and with excessive exposure can cause serious illness. UV rays are also the main cause of fading of furniture, carpets, wallpapers and items displayed in shop windows.

The sun protection film filters out up to 99% of UV radiation, and UV rays are successfully absorbed not only by tinted films, but also by transparent ones.

Noise isolation

When installing a film on glass, a composition is obtained that has a section of media, soft (film) and hard (glass), the presence of such a section of media allows absorbing glass vibrations.

So, compared to ordinary glass, glass with a film of 100 microns or more increases sound insulation by 3 dB (about 2 times).

Glass armoring is advisable in all cases where glass must have additional strength: glazing of residential and administrative buildings, shops, schools, kindergartens, sports facilities, as well as glass roofs, ceilings, canopies, awnings, etc.

These films can be installed on single and double glazing, double-glazed windows, PVC windows, etc.

The cost of installing impact-resistant films by resistance class:

200µm (A0)	300µm (A1)	400μm (A2)	600um (A3)
1100 rub/m2	1500 rub/m2	2200rub/m2	3000 rub/m2

Reading 7 min.

The profile is the basis for the manufacture of window frames and sashes. The appearance, durability and reliability of the entire window structure depend on its quality.

Material classification

For the production of modern window blocks, wood, aluminum, PVC are used. Each type of material has its advantages and disadvantages, features and limitations in use.

Wood

The best and most expensive types of wood for the production of window profiles are oak and larch, alder and pine are also used. The high cost of wooden structures is associated not only with the use of natural wood, but also with the peculiarities of the technological process. The material for window profiles needs careful processing (drying, impregnation with antiseptics, painting, varnishing), and high precision and craftsmanship play a key role in the manufacture of the product.

Advantages of wooden windows:

environmental friendliness;
good heat-shielding properties;
preservation of natural air exchange between the room and the street;
aesthetic natural appearance.

Flaws:

the possibility of warping and swelling in case of violation of the production and installation technology;
low resistance to fire;
high price.

Aluminum

Since the metal is not able to retain heat, the aluminum profile is mainly used for or utility rooms, when it is not possible or necessary to equip warm glazing.

Exist . A special thermal insert is laid in the profile, which provides high thermal insulation properties of such window structures.

The advantages of aluminum profiles include:

strength and durability;
ease;
resistance to external influences;
fire resistant.

Minuses:

low heat-shielding properties of the "cold" profile;
high price of the "warm" option.

PVC

Reinforcing U - shaped profile for structural rigidity

PVC profile has become the most common for the production of modern windows, due to its low cost compared to wood and aluminum and excellent heat-shielding and performance properties. The main competitive advantages of PVC:

high level of thermal insulation;
ease of manufacture and installation of finished products;
high resistance to the influence of precipitation, chemical reagents;
the ability to produce products of various designs and shapes;
affordable cost.

Main disadvantage- combustibility, like all plastics. All other user complaints are in most cases related to the choice of poor quality products or installation errors.

Characteristics of PVC profile

The lion's share of all installed window blocks falls on plastic products. There are windows from the profile of dozens of manufacturers on the market, which at first glance look the same. Often a low level of quality appears only after some time of operation, when it becomes obvious that the profile does not cope with its functions and does not provide the proper level of thermal protection. When choosing a product, it is useful to know the main significant characteristics of a PVC window profile.

Wall thickness

According to this indicator, 3 product groups are distinguished:

Class A This includes products that have an outer wall thickness of 2.8 mm, an inner wall of 2.5 mm. Such indicators are considered optimal to ensure the best thermal insulation of the dwelling.
Class B. Products with outer wall thickness from 2.5 mm, inner wall from 2.0 mm. Such products less reliably protect against heat loss and are more prone to deformation during operation. The main purpose is installation in shops, public institutions.
Class C. Products with thinner walls than in previous classes. Windows from it are intended for a glazing of non-residential, warehouse, production rooms.

Read also: What you need to know before choosing windows in the apartment!

Profile width

The indicator determines which double-glazed window can be mounted in this profile. A double-glazed window consists of several glasses connected by a frame around the perimeter. The spaces formed between the glasses are filled with ordinary air or inert gases (in premium segment products) to improve thermal insulation performance.

A single-chamber package consists of two glasses and one air chamber between them. Two-chamber consists of 3 glasses, between which there are 2 chambers, respectively, etc. The more glasses, the warmer the finished product.

Also, the width of the profile determines the mounting dimensions for installing the window. With an increase in width, the total weight of the structure increases - this must be taken into account, for example, when glazing a balcony with weak base slabs.

Usually the default value is 58-80 mm, some brands offer products up to 120 mm wide for the production of products designed for operation in harsh climatic conditions and featuring improved sound and heat insulation characteristics.

Number of profile cameras

Not to be confused with double glazing air chambers!

The plastic profile is hollow inside and is divided by partitions. The heat-insulating properties of PVC profiles are due to the presence of hollow chambers between the jumpers - the more there are, the lower the thermal conductivity of the window frame and sash.

Each cavity performs a specific function (moisture removal, fastening of fittings, ensuring strength), and their number (usually 3-8) and location is determined by technological calculation. The most in demand are 3-5-chamber types of plastic profile.

metal reinforcement

The plastic profile is additionally reinforced with a metal frame to make the structure rigid. This significantly reduces the likelihood of deformation and sagging of the window sash due to many opening-closing cycles, temperature changes and other influences during use.

The shape of the frame depends on the size of the window:

L-shaped– reinforcement is laid along 2 walls; enough for small windows;
U-shaped– reinforcement of 3 profile walls; suitable for windows up to 1.9 m in height;
closed– reinforcement is located along 4 planes and provides the greatest rigidity of the product; for glazing large areas of loggias and panoramic balconies, it is recommended to choose this type of profile.

What to look for when choosing

It is difficult for the buyer to determine the quality of the profile on exhibition samples. In most cases, one has to rely on the decency of the seller and the manufacturer of window structures. There are some features that will help you avoid buying a low-quality product:

Perhaps, when choosing the best option, many are wondering what kind of windows there are. The question is very capacious, but it could be unmistakably answered with just one word - different. No matter how trite it may sound, but these products can be very diverse.

Window types are determined by various criteria and characteristics. These are the types of profiles that are used for plastic windows, and the types of glass, and the purpose of the design, and the properties of double-glazed windows, and much more.

Classification depending on the opening mechanism:

Blind window. Such a design can be an independent unit or part of a large plastic window in which only some of the shutters open. It is inexpensive and does not require additional accessories. Of the shortcomings - the complexity of care. Washing a window is often problematic and not very convenient.
Swivel opening mechanism. This is a traditional swing type design. It is easy to open, however, it requires free space inside the room.
Folding system. This mechanism allows you to easily open the window into the room. The design is compact, makes it possible to use the ventilation mode.
Tilt and turn opening. This is a symbiosis of the two mechanisms described above. Convenient and functional option for living quarters.
Shtulpovy mechanism of opening. Such a system is relevant for double-leaf systems and provides for closing "sash to sash". This is the best option for large structures (width 1200 mm or more).

Plastic windows are divided into types according to the number of sashes: one-, two- and three-leaf. According to their functional purpose, they can be:

soundproof;
energy saving;
tinted;
impact resistant.

Types of profiles for PVC windows

On the territory of Russia, the classification of profiles by type is determined according to GOST 30673-99. So, according to their functional purpose, they are divided into main and additional ones. Depending on the degree of adaptation to climatic conditions, all profiles can be combined into two groups: normal (the average monthly temperature in January is not lower than -20 ° C) and frost-resistant design. Profile classification is also carried out based on the thickness of the outer walls (see table below).

Other classifications exist, such as finishes, heat transfer, etc.

Types of double-glazed windows

A double-glazed window is the basis of the design. His choice is very important. It is quite logical that all buyers are interested in what double-glazed windows are. In the most general form, they can be divided into one- and two-chamber. This is a popular classification. Single-chamber ones are often placed on loggias. They consist of two glasses and an air chamber. Two-chamber most adapted to the conditions of our climate. As a rule, it is these double-glazed windows that are found in residential buildings of our compatriots.

A cut of a double-glazed window

If you want to learn more about what double-glazed windows are, you should consider them in terms of glass. They can have different thicknesses (for example, outer 4 mm each, and inner 6 mm), additional improved characteristics.

Protection class

If you decide to purchase glasses with a protective film, you should pay attention to the types of double-glazed windows depending on the protection class. There are three levels of protection:

Class "A". Minimum stability in comparison with other classes. At the same time, the glass calmly withstands a thrown stone (even a brick), preventing intruders from entering the room.
Class "B". Glass withstands impacts of medium destructive force. Only prolonged exposure can break it.
Protection class "B". In such a product there will be no through hole even when hit by a large destructive force (for example, a shot).

Types of double-glazed windows are determined by the characteristics of the glass itself. For example, energy-saving double-glazed windows. The special coating makes them energy efficient. The high level of heat saving allows you to significantly save on heating in cold weather. Continuing to talk about what double-glazed windows are, it is worth mentioning anti-vandal products with triplex. Multi-layer film does not impair visibility. This makes the glass very durable. If your apartment has a panorama of a noisy and busy street, you should opt for soundproof double-glazed windows. On the sunny side of the house, tinted ones can be used. When working with professionals, you will not have to understand the varieties of systems, profiles, and accessories for a long time. Employees of the company will provide all the necessary information (double-glazed windows, views, photos) and help you make the right choice.

Before replacing plastic windows or doors, buying new ones, you should study the characteristics of the products. They will help you understand what price is fair for different designs, what are the advantages of popular products from different manufacturers (KBE, VEKA, REHAU). It is worth paying attention to a less discussed criterion. The quality of PVC windows and doors determines the class of their profile.

Russian and European PVC quality classification

In the European Union, plastic profiles are classified according to the EN 12608 SR standard. It provides quality requirements for unplasticized polyvinyl chloride. Plastic doors and windows are made from it. In our country, PVC profile for door and window systems is classified according to GOST 30673-99.

Note that the requirements of foreign and domestic standards are different. In different countries, specialists traditionally use different measuring systems and carry out construction in different ways. However, these normative documents have common features. Both define durability, heat-insulating parameters and some technical ones, allowing to attribute components to a certain class.

Classification according to the thickness of the profile walls

The key criterion for classifying a profile in European countries is the wall thickness, which determines the dimensional stability and strength of the plastic. The durability of the window, door, the preservation of their shape as they are used, under the influence of loads, depends on it. PVC profile walls are divided into:

external- shaping, on the front side, are located outside the product, visible in the installed structure from the inside and outside of the room;
internal- profile walls, invisible in the installed structure. Their surfaces support the glass and face the base wall on which they are mounted.

Profile systems belong to:

A-class- external walls from 2.8 mm, internal - from 2.5 mm;
B-class- external walls from 2.5 mm, internal - from 2.0 mm;
C-class- the wall thickness does not correspond to the above indicated ranges. Strict requirements are not imposed on C-profiles.

Tests for the compliance of various profile systems with the DIN EN 12 608 standard showed: for B-class profiles, in comparison with A-class analogues, the angular strength is 25% lower, the dimensional stability is 15% lower, and the resistance to pulling out screws is 20%. B-profiles are less durable, but much cheaper and more popular, including in Russia.

Most manufacturers of plastic windows in the post-Soviet space produce profile systems of classes A and B. Different profiles satisfy different consumer needs. The choice of any is always justified. It is advisable to use B-class profile structures in the glazing of non-residential, seasonal, and industrial facilities. The strength of products increases reinforcement, an increase in the number of chambers.

Remember: a profile system belongs to a specific class only if both values - the thickness of the inner and outer walls - meet the standard. Figuring out the profile class is easy. Ask the seller to provide a certificate of conformity of the product to the specified requirement.

Products from A-class profile systems insulate heat better and last longer. However, a high-quality window, door must meet other requirements. When choosing designs, it is worth considering the thickness of the window, door sash, frame, the number of hollow chambers. Choose durable

Plastic windows firmly occupy a leading position. They are distinguished by a high level of heat and sound insulation, in addition, they provide the opportunity to choose fittings, the method of opening the window and the color of the profile. 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 the article, we compare plastic window profiles of 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 separated by bridges that create several air chambers. A special technical calculation determines their size and location. The wider the profile, the greater the number of chambers in it that increase the heat-preserving 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 one or two chamber types, the width of the glass in a standard double-glazed window is 4 mm (M1 brand).

Each cavity has its own purpose:

for the outflow of water;
fastening accessories;
responsible for strength, etc.

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

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

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

Characteristics of PVC profile for plastic windows

Material

This product is made of a kind 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.

Polyvinyl chloride, due to its distinctive properties, makes it possible to manufacture frames for double-glazed windows not only in a rectangular or square shape, but also in the form of arches, triangles, circles, and so on. Thus, giving absolutely any simple or complex configuration to the window, allowing you to translate into reality even the most non-standard idea of designers and architects.

Design

The inner part of the plastic body of the profile is divided by longitudinal partitions, which in turn form cavities (air chambers). The minimum number of chambers in the 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 figures. It should be noted right away that 3- and 5-chamber profiles are popular.

Reinforcement

To give 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 under 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 the metal reinforces 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 a balcony, a profile with closed reinforcement is required.

Profile class

The wall thickness of the profile determines its belonging to a certain class:

Class A - profile wall thickness 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 plastic window profile manufacturers

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

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

VEKA

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

Profile systems from VEKA are presented in 8 types, the installation depth of which is from 58 to 90 mm, and the number of cameras varies from 3 to 6. As a result of all the improvements, this profile is reliable, environmentally friendly and aesthetic.

REHAU

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

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

SCHUKO

This company is equipped with modern equipment, uses high-quality materials and the staff consists of qualified personnel. Thanks to this, it produces the entire line of profiles, fittings and seals.

Window profile designs are presented with a width of 60 to 82 mm, the number of chambers is from 3 to 8.
SCHUKO windows are easy to use and have good anti-burglary properties.

MONTBLANC

On the territory of Russia there are 4 manufacturer's plants for the production of profiles.

The Russian-Austrian company is equipped with a production base where developments are being carried out and the latest technologies are being introduced.

The Mont Blanc line contains 6 types of profiles, where the mounting width is from 58 mm to 120 mm, cameras - from 3 to 6.
The durability of the profile system (60 years) is achieved with the help of specially designed performance characteristics for harsh climates.

PROPLEX

The plant, located in Podolsk, produces a profile on German equipment using Austrian technologies.
These products are produced in widths ranging from 58 mm to 127 mm, chambers - from 3 to 6.
The original recipe makes it possible to produce high-quality profiles with impact strength and special whiteness.

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

Profiles of the German company KBE

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

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

KBE Etalon - three-chamber profile

The mounting width is 58 mm;
the width of the front walls - 3 mm;
the thickness of the double-glazed window can be up to 34 mm;
3 cameras 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 ensure resistance to heat transfer. Such windows have a high degree of tightness, which exceeds the existing requirements of GOST by 5 (!) times, which guarantees the complete absence of dust and drafts in the room;
two sealed 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 the window is closed;
stiffening ribs are installed in the KBE profile, which provide additional strength to the window structure. Also, special stops allow to increase the rigidity, with the help of which the exact location of the reinforcing metal insert is achieved.

KBE Expert - five-chamber profile

Mounting width is 70 mm;
the width of the front walls - 3 mm;
the thickness of the double-glazed window is up to 42 mm;
5 cameras in the frame and sashes, 3 or 4 in the impost (horizontal and vertical window bars);
Suitable for use in harsh environments (-60°C);
sealing contours correspond to class A;
service life - 40 years;
in the manufacture of environmentally friendly materials are used, does not contain lead.

Advantages:

a five-chamber structure allows you to achieve a better thermal insulation value, such a profile is able to retain heat 20% more than typical three-chamber systems. You can achieve excellent sound insulation by installing wide double-glazed windows in a 70 mm profile;
13 mm profile groove allows you to install anti-burglary fittings, thereby ensuring the safety of the room;
the KBE Expert profile has additional horizontal bridges, thanks to which the handles and hinges will be securely fastened;
when installed, the mounting seam is wider by about 20%, in turn allowing for additional insulation.

Estimated cost of windows from KBE profile

An important factor when choosing one or another double-glazed window is its price. Often it is decisive, but high quality German window profiles cannot be cheap. Below is the approximate market value in Russia.

On average, a single-chamber double-leaf window with dimensions of 140x130 cm, in which one sash is of a deaf type, and the other is a tilt-and-turn one, will cost:
- from a profile of 58 mm from 7500 rubles,
- from 70 mm - from 10,000 rubles.

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

When buying 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 profile of 58 mm 11,000 rubles;
- from 70 mm from 13000 rub.

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

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

This transparent element consists of 2 or more glasses that are hermetically connected to the frame. Between them, a chamber (air gap) is formed, 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, abbreviated as 4-16-4. Thus, its mounting width is 24 mm. A construction 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.

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

If the windows face the north side and a road loaded with cars lies nearby, then the following option is suitable in this case: a 5-chamber profile with a depth of 86 mm, supplemented 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 at least 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 is 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 is, poor-quality installation will cancel all its high characteristics.