The product passport must contain all profile parameters, including resistance to low temperatures, or simply indicate the degree of performance. If it is written that the profile belongs to a normal or frost-resistant type, then you can buy without fear, it is designed for negative temperatures.
Profile drainage holes Thermal insulation properties of the window depend on the number of chambers. There must be at least three of them for cold glazing of balconies, loggias and technical rooms and at least 5 for windows of residential premises, offices, retail establishments, hospitals and schools. PVC profile with 3 chambers PVC profile with 3 chambers. PVC profile with 5 chambers PVC profile with 5 chambers.
Why plastic windows are better Hermetic design prevents heat loss, which is especially important in houses with insufficient heating system capacity and apartments in which heating appliances are equipped with meters and temperature controllers.
There are no completely low-quality windows on the market now - there are a lot of companies offering windows of their own production and only one-day firms can afford to work with cheap materials. Before ordering windows, you need to find out as much as possible about the company's reputation, see its products, etc. It is best to buy products from large manufacturers - high-quality equipment plays a lot in the manufacture of windows. Many small companies and workshops cannot afford to buy expensive cars, and therefore their products are somewhat worse.
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.
types of opening of shutters of plastic windows Deaf windows. Stationary construction of a frame and a double-glazed window. Blind windows do not have fittings and do not open. Most often they are installed as an element of a multi-leaf window or as a showcase. Tilt and turn window. This is the standard and most common type of opening, it is suitable for houses and apartments. The mechanism opens in a horizontal and vertical plane, it is suitable for rectangular, arched and trapezoidal structures. With this option, micro-slit ventilation is possible. Fanlight (windows with a transom). Shtulpovye windows (oar). Their shutters open in one plane and, as a rule, open into the interior of the room. Sliding blocks. Such windows are the right choice for rooms with limited space. They are ideal for glazing loggias and balconies.
Plastic windows do not surprise anyone now, they are installed almost everywhere - from shops and offices to luxury apartments and three-story mansions. But their quality is completely different. If at the beginning of their “biography” plastic windows were exotic structures that looked like a degraded version of serial wooden ones, as they say, “soviet”, and practically equaled them in quality, then at a price they clearly went into the premium segment. But in the process of technological development, they have turned into a completely competitive tovary, which has a number of unique properties.
Sooner or later, but a sealant working in a stressful mode, which can withstand both mechanical and thermal and chemical influences, the material wears out. It is not difficult to make a replacement even on your own, if you choose a suitable sealant from the entire range of products offered by manufacturers.
Usually, if the installation company is an authorized partner of a well-known foreign company, the risks during installation are reduced to zero. Western companies carefully monitor the qualifications of installers so that the client does not suddenly complain about an incorrectly installed excellent window.
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.