For protection, comfort and beauty: how to choose plastic windows correctly The choice and purchase of metal-plastic windows requires the utmost responsibility, since the installed design provides for a fairly long service life - NOT a year or two, but decades! The modern market is replete with offers from both well-known and beginners offering ready-made engineering solutions, including non-standard ones.
Disadvantages and the issue of environmental friendliness The frames of plastic windows have one significant drawback - non-repairability. Scratches, scuffs and other surface damage cannot be repaired on plastic. However, plastic is much harder than wood, and it is more difficult to scratch it during operation.
To be convinced of the quality and high consumer properties of plastic windows, you just need to read about their characteristics in the article brought to your attention and compare them with wooden structures. The text is far from advertising in nature - only objective information. The choice of priorities is up to the reader. Here you will learn how to choose plastic windows, and why some designs are better than others.
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.
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.
The stability of geometric shapes, the preservation of angles, the overall strength of the structure largely depends on the thickness of the partitions inside the frame. It is difficult to check the jumpers, one can only hope for the veracity of the information indicated in the product passport. This is another fact in favor of choosing windows from large manufacturers - the process is well established there and no one will falsify products, risking damaging their reputation and incurring millions in losses.
What does a plastic window consist of? Profile is the main element of a window block. Its purpose is to combine other components into a whole structure.
The more chambers, as well as the distance between their walls, the higher the noise performanceo- and thermal insulation. Two-chamber profiles are intended mainly for cold glazing, unsuitable for windows in heated rooms due to low thermal insulation.
It is certification that is a tool to protect the buyer from an unscrupulous manufacturer, and also acts as a guarantor of safety, confirmation of the declared quality indicators of the goods.
Fittings Before choosing a plastic window, pay attention to fittings. It must: meet high strength and durability indicators: the best operational properties are shown by fittings with an external anti-corrosion coating; be multifunctional: easy to open, close, provide multi-stage, automatic, emergency, ventilation, scheduled operation, guarantee protection against unauthorized entry (break-in), prevent attempts to control children.