Most heat escapes through a double-glazed window, so you should pay close attention to it. Often, to improve the characteristics, silver ions are sprayed onto the surface or argon gas, which has low thermal conductivity, is pumped inside. As a result, such double-glazed windows are more expensive, but they also retain heat 1.5 times better than ordinary ones.
Decorative possibilities of profiles The characteristic white color of metal-plastic windows is becoming less and less popular. It is replaced by a variety of colors that imitate precious wood species or simply monochromatic according to the RAL scale or other color fans of leading paint manufacturers. Decorating the profile somewhat increases the cost of the finished assembly - the difference can reach 15 - 20%.
To reinforce the plastic profile, special steel inserts are used, which are mounted directly into the main chamber of the PVC profile. The thickness of steel reinforcement in translucent PVC structures according to GOST should not be less than 1.5 mm.
Installation depth In addition to their own heat-shielding properties, such frames allow you to install more durable fittings, thick double-glazed windows and additional contours of insulation and sound insulation. But the width of the profile does not necessarily indicate the number of chambers - there are profiles with fewer cavities, but with a width of 8 or even 9 cm. In terms of general thermal insulation properties, they are better than narrow multi-chamber ones - it is not the number of chambers that matters here, but their size and stock air in them. We can conclude that the greater the installation depth, the better the window in terms of thermal insulation and other characteristics.
How to determine the quality of the profile The first thing you need to pay attention to when buying windows is the appearance of the plastic. If the window is not laminated with decorative wood-like film, then the type of material will tell you a lot. High-quality polyvinyl chloride is a monolithic material, completely smooth, uniform in color. If spots are visible on it, or, worse, small or large grains, this is a fake, which is not worth buying in any case.
Closed PVC windows do not let in street noise at all. You will be able to sleep peacefully even in apartments overlooking major highways or busy streets. PVC window sashes can be hinged and swivel, open in several planes at once, often equipped with the so-called "ventilation mode".
Those. the window manufacturer must have a window conformity certificate, the profile manufacturer must have a certificate of compliance with the requirements of GOST 30673-2013 for the profile, etc.
But in slightly more extreme circumstances, such as severe frost or heat, as well as direct sunlight (UV), it can fail. Becoming brittle in the cold and softening in the heat, it quickly becomes unusable if the window sash is actively used. But with the doors constantly closed (or constantly ajar, in micro-ventilation mode, for example), it will last quite a long time.
In the event of failure, such a seal can be easily replaced without resorting to calling repairmen. TPE seals are sold in stores, on websites or in the market. They are inexpensive. It is only important to notice the damage in time so that the repair does not fall on the cold season, when it is not very convenient to open the window.
Modern manufacturers of metal-plastic structures offer many solutions for glazing your home. How to choose a really high-quality window among this variety?