What plastic windows are considered the best. The best profiles for plastic windows - review, reviews, recommendations. Which profile do you think is better? What is better Rehau or Brusbox? Veka or Proplex? KBE or LG? etc

Good afternoon! Every person in life is faced with the question of choosing a high-quality plastic window. If you are faced with such a problem, I suggest reading this article.

My many years of experience in working with plastic windows gave me a lot of knowledge, which I will gladly share with you.

The plastic window is made of a multi-chamber system, which not only retains heat, but also protects the house from moisture, dust, wind and noise. For the choice of high-quality windows, the manufacturer plays an important role in the first place. It is better to choose a window manufacturer based on the reviews of customers, friends who installed windows. The most popular manufacturers: Rehau, KBE, Veka, Salamander, Proplex.

An important role is also played by the material from which the profile, double-glazed windows and fittings are made.

Reviews and advice from our customers on how to choose the highest quality and best plastic windows

If you decide to install windows, then you first need to decide which plastic windows to choose. It is important to know what to pay special attention to in order to avoid many problems. We give below reviews of plastic windows that our customers leave. Perhaps they will help you figure out the question - how to choose plastic windows.

Anatoly, 45 years old, Moscow:

Pay attention to the type of profile you are using. The profile can be imported or domestic. Many experts argue that imported ones are of better quality - and this is true. Sometimes, in order to make an inexpensive profile, they use secondary raw materials. Therefore, be sure to check this point with consultants. Carefully study the cut that is shown to you as an example - its thickness should be 1.5 mm, it should be made of galvanized steel. Only such a profile will be reliable and of high quality.

Try to carefully consider the attached accessories. High-quality - this is German-made accessories. The simplicity and convenience of managing your plastic window depends on it.

The number of air chambers inside the window must be at least three.

A company manufacturing plastic windows must have samples of work and sections of profiles. Production and installation must be certified. Never hesitate to ask for supporting documents and samples. This will save you a lot of worries later.

Proper plastic windows will serve you reliably. I want to note that only professionals work in the company "Repair" of windows. You can trust them with your home without hesitation!”

Stanislav, 37 years old, Moscow region:

“... I would like to advise all those who wish to purchase the best plastic windows to pay attention to the quality of double-glazed windows.
High-quality double-glazed windows should be:
Not less than 32 mm thick;
There must be at least two air chambers in a double-glazed window;
Must have a heat reflective coating;
The brand of glass must be M1-polished;
When I needed to change the window in the kitchen in my apartment, I contacted the Window Repair Company. Double-glazed windows turned out to be of really high quality - any wind and frost are not terrible with them. Guys, thank you!

Svetlana, 30 years old, Moscow:

“…Plastic windows – which ones are better? In my opinion, brands such as Rehau, Veka, KBE should be trusted. Plastic windows are really of high quality - reliable thermal insulation, ease of operation, anti-burglary system. The windows look solid, you can not hear the noise from the street. I installed Rehau plastic windows in my apartment, and Veka for my parents. With such windows, cold winters are not terrible, and in summer it is quite comfortable with the help of mosquito nets. Thanks to the staff of the Window Repair Company for their advice and help with the installation!”

Contact our company and purchase high-quality plastic windows for yourself, which will help you take a fresh look at the world around you!

source: http://www.okna-plastiq.ru/

When choosing which windows to buy for your home or office, each of you is looking for the best solution for keeping warm and comfortable, trying to find the best combination of price and quality. The manufacturer of a high-quality plastic profile recommends paying attention to the following parameters of a PVC window:

Profile

There are several grades of profile quality, determined by the thickness of the outer wall. A thinner profile may cost less, but it cannot always ensure the preservation of the window's consumer properties - heat and sound insulation, geometric stability, and durability. The best firms work with a class A profile, which allows you to guarantee quality.

Fittings and accessories

Windows of good quality should open and close without problems at any time of the year, protected from dust and street sounds. Cheap seals, handles, swivel fittings and fasteners not only reduce the cost of the window, but also reduce its quality. After all, with bad components, even a first-class profile will not save.

Glass

Pay attention to what glass the manufacturer uses. Good windows have double-glazed windows made of polished glass, often with a sun protection coating. Cheap Chinese glass can later upset you with cloudy stains, scratches and even cracks in severe frosts.

Mounting

Whatever the best plastic windows are, improper installation will cross everything out. We advise you to use window installation services offered by the manufacturers themselves. Hiring outsiders to install or installing it yourself will void your warranty.

Price

The final cost of the installation window depends on all the previous points. You can find and install a window cheaper, but the total savings can be a maximum of 20%, and the life of the window will be unpredictable. Just find out how much maintenance and repairs cost, and consider whether it is worth installing windows that may need to be repaired.

From the experience of cooperation with window manufacturers, we confirm that the most common problems in window operation are caused by poor-quality fittings and improper installation. It is better to spend a little more money and install the highest quality window than to regret the money spent and prepare for repairs again.

source: http://www.veka.ru/

The rating of plastic windows is one of those criteria by which it would be quite easy to determine the best plastic windows. However, you will not find such an objective and comprehensive rating. This is due to a number of reasons.

Firstly, the rating of plastic windows cannot be objective, since the assessment will always be based on a subjective judgment. Expert or popular opinion is always only the opinion of subjects based on some criteria, the set of which is very different.

Secondly, the rating of windows cannot give a comprehensive assessment, because window products are a technically complex product with versatile and multifaceted characteristics. It is not at all necessary that the best window should be made of the thickest (widest) profile, and the warmest double-glazed window is not always necessary for glazing.

Thirdly, the rating of plastic window brands cannot guarantee the quality of PVC windows in operation. Even the best rating windows can be damaged by poor installation or perform their functions improperly due to manufacturing defects.

Which plastic windows are better: Veka, Rehau, KBE?

As in any matter: the fish is looking for where it is deeper, and the person, where is better. In this regard, it is always more interesting for an ordinary consumer to buy a higher quality product at a bargain price. Therefore, having an idea of ​​which product from the presented line has the best characteristics, it is always easier to find it at the best price.

Choosing windows popular today based on Rehau, Veka, KBE, etc. profiles, a person makes a conscious choice in favor of a well-known and reliable brand. However, windows based on the technically best profile have excellent potential, but do not guarantee excellent performance.

Indeed, in addition to the profile itself, the window contains fittings, a double-glazed window, the quality of work of the window manufacturing company and the installers of the installer company. Thus, a window from a Rehau brand profile will not necessarily be better than KBE or Veka windows.

Why is there still no better window company and no better plastic window?

This question torments both buyers and sellers of windows, journalists of popular magazines and editors. Increasingly, the question of choosing the best PVC windows is being asked in construction forums and search engines. But the answer, unambiguously fair and correct, has not been found. Why?

One of the reasons is the complexity of the design itself, as we described earlier, which consists of a large number of elements. It can be used as expensive and high quality components, as well as less expensive, less reliable.

Add to this the human factor, which is present in any assembly and manufacturing process using the labor force of a living person. You will get a black box with a large number of unknowns at the input and a product with mysterious properties at the output.

Another component that also comes into play when determining the quality of an installed window is the installation process. It is not difficult to imagine a situation when an excellently made window in everything will be irrevocably spoiled by a clumsy installer.

Note!

It was complaints about such an installation that one had to hear in the process of "sanation" of residential buildings. The installation of plastic windows was entrusted to non-professionals, and, as a result, windows that were initially good in quality turned into a non-functional and low-quality element of the window opening as a result.

If, nevertheless, to determine the best window, then for this you need to compare and select products according to the following rules or in one of the following ways: by price, by quality, by the optimal price-quality ratio.

The methodology for an independent rating of plastic windows, which gives an assessment that is interesting to the buyer, as it seems, should be based on absolute values ​​that are directly related to the window structure. The quality of services (delivery, installation) can already be assessed in relation not to a window, but to a specific window company.

Summary:

• The rating should include goods - plastic windows and PVC doors - of the same "weight" category. Possessing similar, if not the same technical characteristics. Windows of different segments should be compared in their subgroups.
• The rating should evaluate the same parameters according to a predetermined list - the most significant characteristics from the point of view of the window consumer.
• The rating should be compiled by an independent group of experts or formed by public opinion - a representative sample from the totality of all possible window consumers.

Only by working in this way, the results obtained will have at least some meaning, and the rating of plastic windows itself will be in demand, useful and relevant when choosing windows and buying them.

source: http://pvc-profile.ru/

What plastic windows are better to put?

At first glance, the design of plastic windows is very simple - glass, frame, handles. However, windows from different manufacturers differ from each other both in quality and in price. When choosing windows of a well-known brand, the buyer pays not for a big name, but for reliability and durability. Let us consider in more detail all the elements that make up the windows, and find out which plastic windows are better.

What plastic windows are better to put in an apartment or house? Good plastic windows do not just close the window opening - they perform many functions.

The main one in our latitudes, of course, is heat conservation. Owners of low-quality windows are well aware of the problem they can become in winter. Cold and drafts are inevitable for those who decide to save money and put the cheapest artisanal model.

But the best plastic windows provide perfect thermal insulation - for example, when it is -5 o C outside, the temperature near the inner glass never drops below +20 o C. In summer, windows can protect the apartment from heat and too bright sun - for south-facing rooms, you can choose windows with tinted double-glazed windows and infrared protection.

An important function of plastic windows is sound insulation, this is especially true for those who live near a busy road. Sound insulation depends on the thickness of the glass and the distance between them.
Windows also protect the house from illegal entry.

Helpful advice!

Well-known manufacturers are constantly improving the burglary resistance of windows, and many models are not at all easy to open from the outside. And, of course, do not forget about such trifles as protection from insects with a mosquito net and from light with the help of blinds.

There are many companies producing plastic windows - about 10-15 largest manufacturers (KBE, Rehau, Veka, Salamander, Schuko, Kommerling, Proplex, Deceuninck, Montblanc, LG Chem and others) and several dozen smaller ones. Each company offers a number of window lines - from affordable to luxury options.

It is not easy to sort out such a number of proposals, it is even more difficult to say which plastic window companies are better. When choosing a window, you should not start from the brand or, moreover, the price, but from your own needs. Here's what to look for when choosing a window:

Material and profile uniformity

Usually the profile for plastic windows is made of metal-reinforced PVC. PVC is resistant to deformation, harmless to humans and the environment, is not afraid of temperature changes, moisture, oils, acids and solvents. PVC can be used to make not only standard square and rectangular windows, but also structures of any shape - round and semicircular, triangular, etc.

High-quality PVC of a uniform color, its surface is smooth, without graininess, irregularities and streaks, it is absolutely odorless.

Profile thickness

A profile is a structure with internal partitions. The thickness of the outer and inner walls of the profile is normalized. Depending on it, the profile is assigned to one of three classes - A, B or C.

1. Class A - external walls with a thickness of 2.8 mm, internal - from 2.5 mm. Windows from such a profile provide good heat and noise insulation, they are installed in residential premises.
2. Class B - external walls with a thickness of 2.5 mm, internal - from 2.0 mm. Class B profile windows are recommended for installation in non-residential premises. They are less durable, keep heat worse and do not provide sufficient noise protection.
3. Class C - all other profiles that do not fit the standards A and B. There are no strict requirements for the class C profile.

Obviously, the thicker the profile, the stronger and better it is. Most modern window profiles have an outer wall thickness of 3 mm or more.

Number of air chambers

Inside the profile there are several cavities - air chambers that provide protection from the cold and loud sounds from the street. The minimum number of cameras in a profile is 3, the maximum is 8. The most common are 3 and 5-chamber profiles. 3-chamber is suitable for windows facing a quiet courtyard or south, 5-chamber is better to choose for windows facing the road or oriented to the north.

Double-glazed window is called a block of glasses, hermetically connected to each other. The space between the two panes of glass is the chamber. Many people confuse cameras in a profile and cameras in a double-glazed window, but these are different concepts.

The most common double-glazed window is a double-glazed window, consisting of three glasses and two chambers between them. However, there are also three- and four-chamber double-glazed windows for especially cold climates. Single-chamber packages are only suitable for glazing loggias, balconies or gazebos.

The quality of the glass is no less important than the number of cameras in a double-glazed window. Ordinary glass is the cheapest, but today many people choose glasses with additional properties. For example, glass with a coating that reflects infrared rays - it is as transparent as ordinary glass, but at the same time it retains heat in winter and pleasantly cool in summer.

Note!

There are fire-resistant glasses that do not break even when exposed to extremely high temperatures, and glass laminated with triplex - such a window is almost impossible to break, but even if someone succeeds, there will be no sharp fragments when broken.

Seal quality

Seals are needed to ensure that the window closes tightly, as well as to ensure the tightness of double-glazed windows. Seals are made of rubber, rubber plastic, silicone or natural rubber. The most inexpensive (and short-lived) option is rubber; rubber and silicone seals are installed in more expensive windows. They do not deform even after long use, temperature changes also do not affect their quality.

Profile width

The width of the profile must be at least 50 mm. Most of the best plastic windows are 58-70 mm wide and larger. The thickness mainly depends on the number of glasses - the more there are, the “warmer” and wider the window. In most cases, a width of 58-70 mm is sufficient to provide warmth and silence in the house, wider profiles are in demand in the harsh northern climate or in very noisy areas.

accessories

A plastic window is a rather heavy structure, moreover, it is constantly subjected to loads - windows are opened and closed daily. Therefore, fittings for such windows must be especially reliable. Most often, the owners of cheap low-quality windows complain about the fittings - the handles become loose and fail, or even fall off completely, the window hinges jam and warp.

To avoid such troubles, buy windows from reputable manufacturers who not only strictly control the quality of fittings, but also constantly develop new, more convenient and durable systems. Adjustable fittings are better than unregulated fittings - it allows you to open the window exactly as much as required, and special stoppers will not allow a draft to slam the window.

Anti-burglary systems will not allow intruders to enter the house (this is especially true for apartments on the ground floor, cottages and private houses). Worthy manufacturers of window fittings include Roto, Aubi, Winkhaus, Siegenia.

The best plastic window manufacturers and prices

As you can see from this table, the products of each company have their pros and cons, so the choice depends on your preferences. Better yet, seek advice from the specialists of the company that installs plastic windows - they are aware of all the strengths and weaknesses of each brand and the intricacies of operation.

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.

1. Characteristics of PVC profile for plastic windows
   • Material
   • Design
   • Reinforcement
   • Profile class
2. Comparison of plastic window profile manufacturers
   • REHAU
   • SCHUKO
   • MONTBLANC
   • PROPLEX
   • Profiles of the German company KBE

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 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.

• 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 - LGCHEM;
• 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.
• The mounting width is from 60 to 86 mm, the number of chambers is 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 be equipped 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 a width that can range from 58 mm to 127 mm, cameras - 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 blind 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 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.

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.

Profile for PVC windows is the main element. It affects the functionality, reliability, durability of the structure. Despite the same appearance, the profiles are endowed with different properties, which must be chosen very carefully.

What are the designs?

Currently, there are a large number of companies producing a variety of. They can differ significantly from each other even from one manufacturer, not counting competitive products. What is the difference and is it worth paying more?

There are a variety, a comparison of which will help the buyer make the right choice. They are a constructive basis, frames and sashes are made of them. The material can be used different: wood, metal-plastic, aluminum, polyvinyl chloride. The latter is the most popular: it is equipped with special steel inserts that make the product more durable and rigid. Air cavities help achieve good heat and sound insulation. Some manufacturers fill these cavities with nitrogen, so that the windows do not fog up during temperature changes. PVC profiles for windows must comply with Russian GOST 30673-99 or European EN 12608 SR.

PVC window profiles of all manufacturers are divided into the following categories:

• Class A: characterized by an outer wall dimension of 2.8 mm. Inside the thickness does not exceed 2.5 mm. Such a window provides good protection from weather conditions, perfectly keeps heat indoors.
• Class B: characterized by thinner walls: outer - 2.5 mm, inner - 2 mm. This sample copes worse with thermal insulation, but is suitable for use in warm climates or for glazing balcony rooms. It should be borne in mind that the risk of structural deformation increases by 15%.
• Class C: products that do not meet Russian and foreign standards. Since there is no certification, there are no strict requirements for it, and manufacturers can choose the thickness at their discretion. As a rule, such windows are cheap, but their quality suffers.

On sale you can find an objective PVC profile. It is used for glazing non-residential technical premises, commercial halls, as it is not able to retain heat efficiently, and there is a high probability of deformation. Externally, it is not much different from the standard. You need to pay attention to the presence of the Object designation: unscrupulous merchants sell such products for homes.

How to choose the right profile?

PVC window profiles have different characteristics, a comparison of which will help you make the right choice. Do not rely on the external characteristics of the products offered. Attention should be paid to the following properties:

• Homogeneity of the material. Choose those products whose plastic is characterized by the absence of flaws. It should be smooth, pleasant to the touch, uniform. If you notice that the surface is coarse-grained, most likely you are dealing with a fake made in violation of technology.
• The coating must be complete, without streaks, traces of paint.

High-quality windows are always factory marked. Look for it on the inside of the package. Firms put their stamps with the name, there may also be numbers: they mean the number of the shift that released the batch. The numbers indicate the number of the device that produced the window and the date of issue of the product. Fakes either do not have such numbers, or the designations are the same.

• Width. PVC window profile often has a standard parameter of 58 mm. Such a window is quite suitable for living rooms and is most often sold in stores. If desired, you can order a thicker version, the width of which will be 70 or 90 mm. The first option is relevant on the upper floors of skyscrapers, as it can withstand heavy loads and is able to effectively withstand strong winds. Useful in cold climates as well. The second option is considered a premium class, it has a high ability to isolate sound and heat, has high strength, but the mass of such a product is much higher, it is not recommended to install it everywhere.

If you decide to install a 90 mm PVC window profile, you should not order an oversized window. Its sash will have a lot of weight and will begin to sag. It is better to take two small ones or make a design with two wings that are independent of each other.

• Thickness. It can vary from 2.5 to 3 mm. However, putting such a design in heavy window blocks is not worth it. A large load may call into question its reliability.

• Number of air chambers. The profile, whose thickness is 58 mm, has two chambers, less often it is equipped with three. This is quite enough for good thermal insulation. More chambers are available for the thicker profile, which is 70mm. It can have up to 5 cameras. Such profiles are most often used as glazing in apartments of high-rise buildings. If necessary, you can order a 90 mm product, it can have up to 6 chambers. The level of soundproofing and heat inside the room depend on their number. However, it is worth remembering that the number of glasses and the dimensions of the profile also increase the mass of the structure, and the difference between the 3 and 4-chamber package is not very noticeable.
• The number of double-glazed windows. Different brands of plastic windows offer products with different amounts of these elements. Do not confuse them with air chambers. A double-glazed window is glass united with a frame and a sealant. Between them are air chambers, they can be filled with gas. The most lightweight is considered a single-chamber double-glazed window, since it includes a pair of glasses. Most often, such products are used for finishing terraces, balconies, loggias, since its mass is minimal, but such a window does not insulate heat well. For an apartment or a private house, it is better to use a thicker version that has three sheets of glass and two air chambers.

When choosing a double-glazed window, you should also be aware of such a feature of the product: the more glasses, the worse the light will pass through. In the server regions of the country, four-chamber products are installed, there is no need to install them in a warmer climate, this will only be an extra overpayment. If the frost does not exceed -40 degrees, the difference between this product and the three-chamber one will not be noticeable.

When choosing plastic windows, you must first of all pay attention to the quality of products, as well as make a purchase based on the purpose of the profile, the climatic conditions in which you live. It is worth remembering that too cheap material cannot be of high quality.