It will not be superfluous to visit the company's office in order to familiarize yourself with samples and supporting documents. As a rule, companies with at least five years of experience are distinguished by the presence of a license and operate their own production. Their product is certified and meets the requirements of GOST.
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.
Order a free call Selecting the type of sash opening When choosing plastic windows, you should decide on the type of sashes. They determine the functionality of the design and comfort during its operation. The type of sashes must be selected depending on the size of the structure, how many windows are in the room and whether there is a need for regular ventilation.
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.
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.
After an approximate calculation on the site, you can choose the nearest offices where you can purchase the company's products, and send them an application that will take into account all the parameters you have chosen.
Important! The reliability of the entire structure depends on the type of profile. They are made of PVC and at first glance look the same. Thermal insulation is provided by internal air chambers, and metal reinforcement guarantees strength. The higher the profile class, the greater the thickness of the outer wall.
Bad products, even if they don't break the window on their own, can fix it in the wrong position or block it when you don't want it to. And they can also creak, annoying the owners of purchased windows with low-quality fittings.
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.
The window selection procedure is based on a number of criteria that guarantee the user: reliable protection from external noise (which is important for apartments in a metropolis) energy efficiency; protection from rain, wind and cold; protection against unauthorized intrusions; ease of use; durability (at least 10 years).