Windows are made of various materials and it is very clear that each of them has its own advantages and disadvantages. Although today it is possible with modern technologies, machines and materials to achieve almost the same thermal, light and sound properties whether it is PVC or aluminum, the choice of material is still made by the end user or customer depending on the elements that are purchased of new windows in its space must satisfy.
ALUMINUM WINDOW FRAMES have great shape stability, which is very important for large window frames, and they are very resistant to weather influences (such as salt, for example). Aluminum window frames hardly age and are very easy to reflect. Aluminum has a high thermal conductivity, so their internal filling is very important, which must be a good thermal insulator. Certainly, the disadvantage of aluminum windows is the higher price compared to PVC or wooden frames.
PLASTIC WINDOW FRAMES have better thermal protection than aluminum ones, but they have a slightly shorter service life and are not acceptable from an ecological point of view, because their production and recycling pollute the environment. With PVC frames, you should pay attention to the number of horizontally laid chambers, which affect the quality of the performance and the insulating properties of the window. Today, the standard for the performance of PVC windows is 5 or more chambers in cross-section. The number of chambers has an impact on the thermal insulation of the frame, while for greater strength, a steel profile is installed in the window to strengthen the structure.
The advantage of PVC windows is definitely a lower price compared to aluminum windows and simple reflection compared to wooden windows.
GLASS IS AS IMPORTANT AS THE WINDOW FRAME
In addition to the frame, the window also consists of glass, which has a very important insulating role. In order to reduce heat energy, today, ordinary single-paned windows are replaced by higher-quality IZO glasses with better insulating characteristics. Iso glass has at least two glass surfaces, and the space in between is filled with dry air with a dew point of -30°C or some other gas, usually argon, xenon or krypton. The mentioned gases are added to reduce the heat transfer coefficient, i.e. in order to reduce heat loss through the window.
The essential properties of iso glass are: insulation against the passage of heat, influence on the passage of light, clarity and cleanliness of the glass, proper reflection of the image of the environment and that there must be no dewing in the intermediate space.
