Despite the fact that wooden windows still have many fans, plastic continues to systematically capture the market. Plastic windows are cheaper, do not require complex maintenance and annual painting, can easily cope with any weather conditions and last much longer than wooden ones. These are not all the advantages, and it would take a very long time to list them, but there is something that wooden structures cannot offer – the ability to choose.
When choosing plastic windows, you need to pay attention to many nuances. It is not enough to simply decide on the design and shape. There are still a bunch of little things that will determine frost resistance, sound insulation and ultraviolet protection. Yes, modern windows do an excellent job with all this, but only if you have chosen the right glass unit, profile and glass itself. And let’s add to this the seals, fittings and type of glass, and we get the most complex design, which must first be carefully understood, and only then proceed to the choice.
Of course, you can always ask the consultant of the company where you order these windows for advice, but with a high degree of probability he will offer you a more expensive, but not particularly necessary option. After all, we have all heard about 8-chamber profiles and triple glazed windows. They do exist, but if you live in the south, you are unlikely to need them. So, what should you pay attention to when choosing plastic windows? We will deal with this issue in this article.
- Profile class
- Number of cameras
- Double-glazed windows
- Filling double-glazed windows
- Glass type and thickness
- Distance frames
- Marking of double-glazed windows
- Seals
- Window size and fittings
- Top brands
| The best manufacturers of plastic windows | ||
| 1 | WINDOW | The best prices |
| 2 | Kaleva | The most reliable windows |
| 3 | Moscow windows | The best ratio of price and quality |
| 4 | VEKA windows | Convenient work schedule |
| 5 | Windows GROWTH | Most popular manufacturer |
Profile class
How is a plastic profile classified and how is it different?
A profile is a plastic beam from which the window itself is assembled. It differs in the number of chambers, the thickness of the external walls and internal partitions. The profile is classified by the first three letters of the Latin alphabet: A, B and C. The purpose of the future window and its technical characteristics depend on the class:
| Profile | External wall thickness (mm) | Thickness of internal partitions (mm) | Purpose |
| Class A | 2,8 | 2,5 | Apartment, private house, any residential premises. |
| Class B | 2,5 | 2,0 | Premises with minimal heating: balconies, storage rooms. |
| Class C | 2,0 | Less than 2 | Industrial premises. Non-residential buildings without heating. |
Class C profile is not used in residential premises. It is very cold and due to the weakness of the structure, such windows, as a rule, are made without opening sashes. Class B is suitable for installation on a balcony or loggia. It already holds heat, but there is no complete insulation. Accordingly, if you have an apartment or a private house, then you should take class A. This is the only option for residential premises with heating.
Opening methods
The sashes of a plastic window can open in different ways.
Rotary opening is the simplest and most common. Suitable for cleaning windows. But it’s not very convenient to ventilate, since the sash swings completely open. You can use a limiter.
Tilt-and-turn. The window sash opens in 2 planes: towards itself (it turns out to be a window, convenient for ventilation), and turns to open the sash completely.
The folding one is suitable for ventilation; for washing you need to unfasten the mechanism.
Sliding (sliding) is suitable where there is no room to tilt the sash. Or the entire structure of the double-glazed window is heavy.
The blinds do not open and cannot be washed. More often they are installed on the ground floor or in combination with opening doors on the sides.
The fanlights have 2 doors, one opens - the upper or lower one. More often used in office buildings than in apartments.
Number of cameras
How many cameras does the profile have?
Since the profile has external walls and internal partitions, it has air chambers. They are what make the window warm. That is, the more chambers, the better the cold will be contained. In addition, the number of cavities makes the structure more durable and reliable. Many who installed plastic windows at the dawn of their appearance remember how they wrinkled over time and the plastic became deformed. This was due to an insufficient number of cameras. Today it is almost impossible to find a single-chamber profile, and if it exists, then its class will be industrial, and the manufacturer will not install opening sashes on the window.
Based on all that has been said, we can provide a comparative table that will show where and how best to use the profile, and how to choose the number of cameras in it:
| Number of cameras | Approximate profile thickness (mm) | Temperature standards |
| 1-2 | 40 | Mostly positive temperatures or frosts not lower than -5⁰ |
| 3-5 | 58 | Up to -30⁰ |
| 4-8 | 70 | Up to -50⁰ |
Simply put, if you live in central Russia and the thermometer in your region rarely drops below -30 degrees, then buying a five-chamber profile simply does not make sense. You will significantly overpay for options that you simply do not need. Accordingly, in the south there is an opportunity to save a lot of money. Profiles with one or two cameras are the cheapest, but here you need to look for the presence of a metal insert.
Windows are often called metal-plastic. The metal here comes in the form of an insert inside the chamber. It does not serve to create heat, but it strengthens the structure and prevents it from deforming. If the profile has only one or two chambers, then such a design will be very weak and a metal insert must be required. However, almost all modern plastic windows come with it.
Double-glazed windows
How many bags should there be at the window?
Previously, a glass or two was simply inserted into wooden windows, so the concept of “glazing” did not exist. Today technology has completely changed. In a modern window, it is the package that is used. Essentially, this is a block of several glasses hermetically sealed together. Not just two glasses, but a solid structure.
Heat is retained between the glasses, respectively, the more packages you have, or rather chambers, the warmer the window will be. This aspect is even more important to look at than the number of cameras in your profile. After all, it is glass that occupies the largest area of the window, which means that the greatest heat loss will come from it. Also, the number of glasses affects sound insulation. If you live near a highway or a busy street, you should choose the option with the maximum number of cameras. As a rule, these are 4 cameras, that is, the package will consist of 5 glasses.
But in most cases, if we consider the option that you have an apartment or a private house in an ordinary urban area and you live in central Russia, then 2-3 cameras will be enough for you. You should also pay attention to the distance between the glasses in the chamber. The rule here is: the more, the better.
Increasing the distance between the glasses is only relevant up to 24 millimeters. Above this size, the quality of heat and sound insulation stops increasing.
Some manufacturers offer asymmetric cameras with different distances. It is very difficult to say how effective this is, but you should understand that if you take a multi-chamber double-glazed window with a maximum distance between the blocks, then the thickness of the window itself will increase, and very much. So, the golden mean is 2-3 cameras with a distance between glasses of 10-16 millimeters. Depending on the climate and noise level on your street, this parameter can be increased or decreased.
Kaleva
The most reliable windows
A full-cycle company that independently produces multi-chamber profiles and double-glazed windows. Constantly develops production technologies and offers its customers the most modern solutions, but at the same time with an adequate price tag. Rating participant:
10 best plastic window companies in Moscow
Window ventilation
Modern windows have strong airtightness. This prevents air from entering the apartment. For the same reason, moist exhaust air is not removed from it.
Therefore, we recommend that customers use the following ventilation methods:
- Based on microcracks. The bottom line is that if you turn the handle in a certain way, the sash will open and a small gap will appear. It is enough for air circulation. At the same time, SHI and TI do not suffer much.
Scheme:
2. Comb-based. The sash is fixed at the required distance from the frame. Provides necessary ventilation
- The use of vents. This is the classic and simplest method. But when we install a window, the light transparency of the window decreases.
- Application of ventilation valves. This is an innovative and effective technology. Fresh air penetrates with a certain dynamics. Moist air is also eliminated. We install automatic and mechanical valves. There are also slotted and folded models. We place them on the finished window structure. At the same time, its aesthetic appearance does not suffer. If necessary, you can install a valve
Filling double-glazed windows
What's between the glasses?
Those who have lived with old wooden windows probably remember how ice accumulated between the glass in winter, and sometimes the window was so covered with frost that it was impossible to see anything behind it. This does not happen with modern windows. And all thanks to the fact that they use a double-glazed window, that is, a sealed structure into which air and moisture do not penetrate.
The simplest cheap packages use nothing. But manufacturers are not standing still and have come up with the idea of pumping inert gases into the chambers. They protect from cold, ultraviolet radiation and noise. That is, this is additional insulation, and, as practice shows, a single-chamber window with an inert gas inside is more effective than a two-chamber window with air.
The most popular gas to pump inside is argon. It increases all window indicators by 50%. Its main competitor is krypton, which shows results twice as high as argon. Of course, this factor affects the cost of the entire window, and it is difficult to say which option is the best. It’s just that the window with inert gas can be thinner and more compact. If this is important to you, look for packages with krypton.
Glass type and thickness
What kind of glass is installed in the double-glazed window?
The glass in the package can be of different thicknesses, and this parameter may differ on the outer and inner parts. The standard thickness of window glass is 4 millimeters, and many sellers recommend increasing this value if your apartment or private house is located on a noisy street. In reality there won't be much difference. Even if you install 6 mm glass, you won’t feel much of a difference, so you can save money at this stage.
The presence of spraying is much more important. The simplest way to increase the protective properties is to apply a thin film of tin to the glass. Such a package will be marked with the letter K. According to research, tin film reduces heat loss by about 25%. Another 5% will be added by a layer of rare earth materials. It is marked with the letter I. Such a window will cost much more, but its efficiency will also increase.
Triplex glass is also available. These are modules welded together and baked in a special oven. Such glass is almost impossible to break. This is precisely where its main advantage lies. Heat loss is also reduced, but not as much as when applying additional coating.
To determine the presence of a protective layer on one of the glasses in the bag, just bring the flame of a lighter to it. In the reflection you will see several lights, and one of them should have a bright red hue, different from the others. Its presence indicates that one of the glasses has a protective coating. Whatever this different reflection will be, there is a film on that glass.
The presence of a protective coating significantly improves the quality of the package, and the best choice is I-sputtering with a krypton medium. Such a package will be the most expensive, but at the same time the most effective in terms of energy saving.
Additional functions
When ordering plastic windows, you can choose the most suitable option for each home. For example, if your windows overlook a noisy road, it is very useful to take care of additional sound insulation. It is achieved by installing double-glazed windows with different glass thicknesses and different widths of air chambers between the glasses, which will dampen resonance. The function of top winter ventilation, a profile with built-in ventilation, a mosquito net and an opening regulator (“comb”) will be very useful additions to new windows.
Distance frames
What frames are installed in the double glazing?
A spacer frame is a bar installed between the glasses in a package. Inside it there is a special material that has absorbent properties. It absorbs condensation and removes it outside. It is thanks to this that frost and ice do not accumulate between the glasses. The size, that is, the thickness of the frame strictly corresponds to the distance between the glasses, and it can be made of aluminum, steel or plastic.
It is necessary to pay attention to this nuance, since it is the spacer frame that creates cold bridges and is a conductor for heat loss. The best option is stainless steel or plastic. They have the lowest thermal conductivity coefficient; accordingly, they are warmer and neutralize cold bridges more efficiently.
WINDOW
The best prices
A company that works with a huge number of profile manufacturers of both Russian and European origin. Thanks to its wide range, it offers the best prices on the market that competitors cannot afford. Rating participant:
10 best plastic window companies in Moscow
What is hidden from the buyer's eyes?
Unfortunately, knowledge about a double-glazed window is most often limited to its visible part, glass and spacer frame. However, the main function of sealing and ensuring physical and mechanical stability in a double-glazed window is provided by elements hidden from the buyer’s eyes.
Sealants for double-glazed windows
These are two layers of sealant that complement each other in their physical properties and, in combination with each other, provide the necessary characteristics.
The primary layer of sealant is the most important, since it is responsible for moisture resistance. As a primary sealant in the production of double-glazed windows, hot-melt butyl sealant is used, which is applied in a thin layer to the side surface of the frame and, in parallel with its main function, serves as a means for gluing the spacer frame to the glass. Replacing butyl with cheaper materials, such as duct tape, does not provide the necessary sealing of the glass unit.
The primary layer of sealant protects from external loads and the secondary rubber-like sealant finally “seals” the glass unit. Most often, a two-component polysulfide sealant is used as a secondary sealant, which is applied in an industrial environment to the contour of a double-glazed window using special equipment.
The use of low-quality products can lead to such undesirable consequences as fogging of double-glazed windows, cracking of double-glazed windows, unpleasant odor and leakage of sealant into the chamber.
Molecular sieve
Another important element hidden from the buyer’s eyes is a molecular sieve or adsorbent poured inside the spacer frame. The main function of a molecular sieve is to absorb moisture that enters the glass unit during production and operation. Saving on high-quality adsorbent can also significantly affect the performance properties of a double-glazed window.
If you are faced with such consequences as corrosion of the spacer frame, the formation of white crystalline deposits at the site of the perforations, rest assured, this is the result of savings from a careless manufacturer.
To protect yourself from such troubles, you should purchase windows only from reliable manufacturers who provide a guarantee on double-glazed windows and can advise on the quality and materials used for production.
The service life of double-glazed windows is established in the technical documentation. According to the warranty, it must be at least 5 years from the date of shipment of the products by the manufacturer.
Marking of double-glazed windows
How to decipher the markings of a double-glazed window?
Each double-glazed window has its own marking, consisting of letters and numbers. This code contains all the necessary information, so before choosing glass, you need to understand what these codes mean. For example, let's take a double-glazed window marked 6-16 ar-4-12 ar-4K.
So, we see three blocks of numbers: 6-16, 4-12 and 4. These are glasses in a bag. The first number indicates the thickness of the glass. That is, our outer one is 6 millimeters thick, and the two inner ones are 4 mm thick. It turns out that the package is two-chamber, and argon is pumped into the chambers, as indicated by the letter marking ar. In addition, at the end of the code we see the letter K, indicating that there is tin coating on the inner glass. You can also find the letter I, indicating a more modern protective coating, and the letter M, indicating the frost resistance of the glass.
Packet markings clearly show the effectiveness of the window, and this can be clearly seen in the comparison table:
| Marking | Heat transfer resistance | Sound insulation level (dB) |
| 4-16-4 | 0,34 | 25-27 |
| 4-16-4K | 0,50 | 26-28 |
| 4-16-4I | 0,58 | 26-28 |
| 4-16 ar-4 | 0,56 | 32-34 |
| 4-16 ar-4I | 0,62 | 36-38 |
As you can see, the protective layers and inert environment inside the package significantly increase their working potential.
Heat transfer resistance is calculated using the formula, where the glass quadrature must be multiplied by the temperature difference inside and outside the room, and the resulting value divided by the DIN coefficient. DIN standards are specified for each region and can be easily found on the Internet.
If we continue the table and consider multi-chamber packages with sputtering and a gaseous environment, as well as without it, it will become clear that a two-chamber package with sputtering of rare earth metals and a krypton environment is much more effective than a 4-chamber unit, but without additional features.
Seals
Which seals to choose for windows?
The seal is a frame made of soft material, glued along the entire perimeter of the windows in places adjacent to the frame. This is the case when you should not save. It is the seal that fails first and requires regular replacement. If you choose a more expensive but better quality material from the very beginning, then you will have to change the seal much less often, and each replacement procedure costs money.
Today there are 4 main types of seals:
- Silicone
. The best option on the modern market. Durable, wear-resistant and non-deforming. It withstands temperature changes perfectly and does not dry out. But at the same time, it is the most expensive and difficult to glue. It is better to call a specialist for replacement. - EPDM
. Rubber thermopolymer. Slightly inferior to silicone, but still a very high-quality material, the replacement of which is required extremely rarely. Mostly installed on expensive windows. - TPE
. Thermoplastic. The best option in terms of price-quality ratio. Relatively inexpensive, but quite reliable material. It is afraid of strong temperature changes, but you don’t have to call a technician to replace it. All the work is easy to do with your own hands, and the seal is inexpensive. - Rubber
. The cheapest product, not distinguished by quality and reliability. It cracks quickly, is afraid of temperature changes and does not like constant deformation. Installed on the cheapest windows. It is inexpensive and you can replace it yourself without calling a technician.
It is very difficult to recommend which sealant is best to choose. It all depends on your financial capabilities. Of course, the best option is silicone or thermopolymer. They will last the longest, but sooner or later they will still need replacement, and it will cost a decent amount. If you are looking for value for money, then this is thermoplastic. As for tires, it makes sense to install them only for reasons of total economy.
Window size and fittings
How to choose the window size and choose fittings?
In theory, advice on choosing a window size should be one of the first, but it is, as they say, self-evident. True, it is necessary to mention it, since large companies often do not make windows to order, but produce them in standard sizes. These are giant companies that also produce profiles, and they simply don’t have time to take individual measurements. If you decide to order a window from such a company, then its size may be approximately 10 centimeters smaller than your clean opening. This distance can be easily covered with platbands and slopes.
The space between the wall and the frame is filled with polyurethane foam. It retains heat perfectly and is an additional window mount. You also don’t have to worry about cold bridges. The thermal stability of foam is even greater than that of brick or concrete, so condensation will not accumulate at the joints.
A modern plastic window is a complex, multifunctional device. It can open in several planes, and accordingly is equipped with a large number of fittings. Another aspect on which you should not skimp. Plastic Chinese handles will quickly fail, break or simply crack. High-quality fittings should have approximately 50-60 thousand cycles, which corresponds to 10 years of intensive use.
One cycle is 4 movements of the fittings. If we talk about handles, then in one cycle there will be openings in all available modes and, accordingly, closing the window.
There are several reputable brands on the market. These are Siegenia Aubi, GU, Winkhaus and Roto. Their products cannot be called cheap, but they will serve faithfully for many years. In addition, manufacturers provide a guarantee and also cover all maintenance and replacement costs.
Moscow windows
The best ratio of price and quality
A company that directly cooperates with manufacturers of profiles, double-glazed windows and fittings. Thanks to this, he can afford to make discounts and hold promotions. Rating participant:
10 best plastic window companies in Moscow
Manufacturing technology
Violation of technological requirements in the manufacture of windows is also a fairly popular type of deception. It leads not only to economic losses, but also to a questionable level of structural safety.
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Reinforcement
The plastic profile needs to be reinforced - otherwise the product will deform and the window will become unusable.
To avoid window deformation, the PVC profile needs to be reinforced inside the structure. This is achieved by using a metal profile - that is why they are called metal-plastic. According to technological standards, the metal profile must be protected from corrosion. The minimum thickness of a closed section (square) is 1.5–2 mm, and at least two screws must fit into it - then the sash will not sag over time.
Where could the deception lie? Usually this is a deviation from production technologies:
- the profile section is too thin - 0.75, 1 or 1.2 mm;
- use of ferrous metal unprotected from corrosion;
- U-shaped reinforcement without a closed section. In addition, violations are possible during the installation of reinforcement:
- selective location (only in mullions, shulpi and turns);
- too short or composite metal profile;
- complete lack of reinforcement (often found in new buildings).
How to check reinforcement for compliance with standards?
- Using a magnet. Run it along the entire length of the frame and sash - there should be attraction everywhere. If it is not available anywhere or in some areas, you have the right to refuse the product.
- According to the distance of the screws along the end of the frame. Normally, they should be spaced with a maximum of 50 cm indentation in a regular profile, and 30 cm in a colored profile.
- Based on the strength of the screws, try unscrewing them. If you can't, that's a good sign.
Assembly
Only a large company that has a considerable amount of money for technical re-equipment can afford to fully equip an assembly line for plastic windows. It must be operated by trained specialists, which also involves costs for staff development. These components make it possible to ensure reliable assembly according to the technology.
Firms that cannot afford high-quality and at the same time expensive equipment with the ability to evaluate the quality of welding end up with a window that has incorrect geometry, lets in cold air and fittings that quickly fail, which, of course, suffers from the client. It is almost impossible to identify such defects visually. Check with the window supplier who serves as the manufacturer. A small organization in a small city is not your option.
Ask the seller where exactly the products are manufactured!
Top brands
Which brands should you prefer?
There are many manufacturers on the modern market. Some make only windows, others produce the profile themselves. Three companies can be distinguished from the leaders: KBE
,
Veka
and
Rehau
. You've probably heard these names, even if you don't have plastic windows. The largest and most famous manufacturers from whom you can order both the profile and the windows themselves.
Brands guarantee high quality and durability. They have the most advanced manufacturing facilities and skilled employees. With them you don’t have to worry about marriage and shortcomings. Giant companies value their reputation, but the price is higher. In general, if you are willing to pay a little above the market and wait some time, then it is better to take a window from famous brands.
In addition to the listed brands, you can also highlight the companies SALAMANDER
,
MONTBLANC
,
KALEVA
and
TROCAL
. They have an excellent combination of price and quality, but are less popular on the market. True, popularity is most likely associated not with quality, but with less aggressive marketing and lower production capacity compared to market leaders.
In addition, at the dawn of their formation, the quality of all the listed brands was inferior to the world giants, and the people had an opinion that it was better not to buy their products. Today everything has changed, and, for example, KALEVA windows are not inferior in quality to Rehau or KBE profiles and assembly. But the prices here are lower than those of large companies, and production times will be shorter. In general, if value for money is important to you, then it makes sense to consider one of these brands and not chase aggressive advertising and promises from big players.
Selecting glass for windows
The quality of the glass used determines the quality of the entire window structure. The following types of glass are usually used:
- Traditional types are float.
- Low emission versions. They have a high degree of transparency and powerful TI. There are K-glasses and I-glasses. The first are produced as follows: tin oxide is applied to hot glass. The result is a baked coating. Therefore, the product is characterized by high strength. This technology has been used since the 70s. It is considered quite outdated.
The second ones are created like this: cold glass is coated with titanium oxide or silver ions. The coating is susceptible to external factors. It is used inside the package. The compartment is filled with gas. The efficiency of the product is one and a half times higher than that of the first types (k).
Thanks to low-emissivity glass, the room is kept warm in winter and cool in summer.
- Options with enhanced strength. This type includes tempered glass and triplex. The manufacturing principle of the first: special paint is applied to the surface. This is followed by powerful heat treatment of the product. Its color may vary. And the paint assimilates with the glass in such a way that a single whole is formed. And the product receives increased strength. When damaged, it produces fragments with rounded edges.
The second is produced as follows: several glasses and a polymer film are pressed. The result is a material with excellent strength and impact resistance. This product is often used as protection against bullets. It does not break into fragments, and all components are held in place by the film. The result is a picture of cracks. The triplex also has excellent SI.
Schematic representation of the operation of these models:
- Sun protection versions. They often replace blinds and curtains. There are the following tinted subspecies:
A) By weight. Production method: dye is added at the production stage.
B) Using spraying. Method: In a vacuum, transparent glass is coated with metal oxides.
B) Film. Method: a special film is glued to the finished product.
- With automatic cleaning. This is innovative technology. Thanks to it, the outside of the window always remains clean without human intervention. Contaminants of organic origin do not stick to the window surface, but are destroyed under the influence of ultraviolet radiation. Their remains are eliminated by rain. Moreover, there are no streaks on the glass after this.
These types of glass have not gained great fame due to their high cost. Moreover, not every region often rains and the sun shines brightly.
Top 5. Windows GROWTH
Rating (2021): 4.79
The Moscow company Okna ROSTA has repeatedly become a winner at various competitions and exhibitions. It is the winner of the Golden Window prize and People's Brand Number 1. A company with a positive reputation in the market and a lot of positive reviews on the Internet. She is praised primarily for her honesty with clients. Here they do not impose unnecessary money. Everything is honest and open. The craftsmen are of the highest level and know their business well. The company offers windows to suit every taste and budget. She takes on work of any complexity and always looks for an approach to each client. You just have to pay for the windows before they begin production. The company operates on a 100% prepayment basis.
Characteristics:
Moscow, st. Baltiyskaya, 9 // oknarosta.ru
Top 4. VEKA windows
Rating (2021): 4.74
Very often, when ordering plastic windows, you have to adapt to the work schedule of the measurer and installer. At the same time, companies completely ignore your personal schedule and nothing can be done about it. In this regard, the Moscow company Windows VEKA compares favorably with its competitors. The work schedule is from 8 am to 11 pm, and this is without lunch breaks, weekends and long holidays. You call a surveyor at a time that is convenient for you, and this is a very important advantage. The quality of the products is also high. The company takes on windows of any complexity, produces them to size and with a wide variety of fittings. Here you will find windows to suit every taste and budget.
Characteristics:
Moscow, Kashirskoe highway, 1/12 / / okna-veka.info
Manufacturers
There are products from different companies on the market. Let's consider which manufacturers of plastic windows are the most popular.
Rehau
The German manufacturer has been producing high-quality windows for more than 50 years and is an innovator in this area - the company's engineers are constantly improving the design and configuration of the profile, and much attention is paid to environmental safety. Rehau plastic windows are available in a profile of 60-70 mm.
VEKA
Products made in Germany are valued all over the world. Veka plastic windows are made in white and colored profiles that do not fade or turn yellow when exposed to direct ultraviolet rays. Natural rubber is used as a sealant, which does not freeze even in very severe frost. The line includes models with a width of 58-90 mm.
KBE
This is a German brand that is the most popular. KBE plastic windows are made from environmentally friendly materials and are recommended for installation in medical and children's institutions. Profile width – 58-70 mm.
Proplex
The Russian company started working relatively recently, but has already established production and significantly modernized window structures. The profile is developed with the participation of experts from Austria, taking into account Russian conditions. Width – 58-127 mm.
Top 3. Moscow windows
Rating (2021): 4.71
A company that produces a wide variety of windows from several types of profiles and double-glazed windows. It cooperates with leading hardware manufacturers, so it can offer the best prices and guarantees high quality. To back it up, the company offers a five-year warranty on all its products, which is very rare in today's market. The company also often holds various promotions and makes serious discounts. True, you can find references online that managers like to impose services and materials that you don’t need. To avoid being misled, be sure to re-read all the tips from our article again. They will help you avoid unnecessary expenses.
Characteristics:
Moscow, sh. Entuziastov, 7A // mosokna.ru
Top 2. Kaleva
Rating (2021): 4.65
Kaleva is one of the few Russian brands that independently manufacture profiles and double-glazed windows. This is a full-cycle company, that is, it does not order components, but makes them itself. This allows it to offer affordable prices and maximum quality. There is no way to shift the blame for poor quality or bark to another manufacturer. It is also the most technologically advanced production on the modern market. The company offers many unique solutions, including glass with a protective function, not found in other brands. A striking example of how an initially small regional enterprise has reached the global level and competes worthy of well-known manufacturers.
Characteristics:
Moscow, Mira Ave., 99 // okna.ru
