safelite window repair

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.

You should make sure that the seller has a certificate for PVC windows, you can additionally request certificates for the profile and other components of the window unit.

The role of air chambers in PVC windows Closed longitudinal air chambers in window frames play a dual role. This is an effective thermal insulation and reinforcement of the structure. External chambers, in addition, serve to remove condensate that forms inside the cavity due to the temperature difference in the room and outside. They are connected to the atmosphere at the bottom and drops of water simply flow down to the street. The presence of such holes has practically no effect on the overall level of thermal insulation.

Reinforced profile PVC profile and negative temperatures One of the important characteristics of metal-plastic windows is frost resistance. This is the ability to maintain the integrity of all elements and heat-saving properties at a certain temperature. For the Russian climate, it is necessary to choose windows marked with the “M” index - frost-resistant. They retain all their characteristics down to -20 0C.

Slotted air ducts are a channel with a damper that opens manually or automatically. Seam valves have a more complex device with a damper that shuts off the flow at a dangerous level of draft. Overhead mechanisms are able to provide the maximum influx of fresh air, however, they significantly reduce the sound and heat-shielding properties of the window block, therefore they are not widely used.

What else to look for when choosing plastic windows We talked about the main parameters of window structures - they should be taken into account when choosing in the first place. However, there are other characteristics that you should pay attention to in order to choose the best option in terms of thermal protection, sound insulation, durability and ease of use.

Modern manufacturers of metal-plastic structures offer many solutions for glazing your home. How to choose a really high-quality window among this variety?

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.

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.

Compared to wood and aluminum, which are traditionally used for window structures, PVC is also more preferable for aesthetic reasons. It is easy to assemble from it not only rectangular structures, but almost any geometric configuration.