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Instead of standard glass, an impact-resistant triplex (two or more layers of glass with a polymer film fixed between them), glass with a multilayer coating that blocks part of the sun's rays can be installed in a double-glazed window.

number of chambers in double-glazed windows A single-chamber double-glazed window is more suitable for regions located in a subtropical and temperate climate, houses located in quiet neighborhoods. A double-glazed window is the best choice with the best heat and sound insulation characteristics (provided that the profile is chosen correctly), a universal option for both city apartments and private houses, it can be used not only in temperate, but also in subarctic climates

The system width of exprof profiles is 58, 60 or 70 mm, depending on the type of window and the number of chambers. The manufacturer's profile systems allow installing a double-glazed window up to 36 mm thick in a 58 mm profile, and up to 44 mm thick in a 70 mm one.

Number of air chambers in windows Chambers are voids in plastic construction elements (profiles and double-glazed windows). How many cameras should be in a quality window? The answer to this question depends on the climate of the region where you live and the location of the apartment.

Fittings German fittings GUGerman fittings GU The service life of the window, flawless operation of systems, softness of movement and reliability of protection against burglary depend on the quality of the fittings. Steel components are considered the most durable. Before ordering windows and buying fittings, you need to make sure that you have certificates and markings with brand marks. The company "Windows KORSA" installs high-quality German fittings GU (Gretsch-Unitas GmbH) in window structures.

The ability of the window to withstand operational loads depends on the quality of the profile: opening and closing of the sashes; the weight of the double-glazed window; wind; precipitation; high and low temperatures; exposure to ultraviolet.

PVC used for the production of profiles has a number of features that manufacturers are constantly struggling with: 1. Sufficiently high linear expansion, reaching several millimeters per meter of length. In order to compensate for this phenomenon, it is necessary to leave special gaps, use reinforcement and correctly calculate the number of fasteners. The same feature of the PVC profile limits mamaximum dimensions of window structures. 2. Low coefficient of elasticity, but even at the factories it is leveled by the use of metal inserts and the correct calculation of the thickness of the inner walls, which are stiffeners. 3. Insufficient temperature stability and UV resistance. Manufacturers also learned to deal with this drawback by introducing special modifiers and stabilizers into PVC, which preserve the color and structure of the material. In high-quality windows, such additives serve no less than the entire structure. They are, in most cases, completely harmless to humans. But if the frame emits a pungent smell that does not disappear for a long time, do not buy this window. It used lead or cadmium, or even more dangerous chemicals, instead of harmless zinc and calcium.

For an apartment window in a big city, it makes sense to consider at least a three-chamber profile. For rooms located on high floors, apartments with a poorly functioning heating system, and rooms overlooking highways and multi-lane avenues, five- and six-chamber designs are suitable.

Given the characteristics of glass as a material with a certain rigidity, spatial structures like double-glazed windows are distinguished by certain size restrictions. They can be within a minimum of 300mm on one side and in an aspect ratio of 5:1. But the maximum glazing area should not exceed 3 m2 in a single-chamber package with 4 mm thick glass and 4.2 m2 with 5 mm glass thickness.

If you come across a profile of a well-known company, for example, Rehau, KBE, Scamander, Mont Blanc, Veka, etc., then there is a high probability that the window will be of high quality. And if the design is made from the profile of an unknown factory, then it is hardly worth hoping for something decent. But it is impossible to focus only on the profile manufacturer - the window is a complex structure, the performance of which depends on the interaction of all elements - fittings, double-glazed windows, seals. Only by considering all the components in the complex, you can make a judgment about a particular window.