Parameters of good plastic windows from OKNARIO
Good quality PVC windows from the Polish exporter of Oknario windows
Trends in window joinery often change, but plastic windows, the so-called PVC windows enjoy unflagging popularity. Their choice is based on the ease of cleaning, ease of maintenance and a large selection of shapes and sizes. What else is worth paying attention to when choosing this popular product?
Heat transfer coefficient and thermal energy transmittance
Thermal comfort and financial savings on heating are today the most important two criteria for selecting window frames. The specific heat transfer coefficients also result from the very provisions of the construction law. The heat transfer coefficient in a house is the most important parameter determining the degree of thermal insulation. It is marked with the letter U and expressed in the unit W / m2K. The smaller its value, the greater the thermal insulation of the window, less heat penetrates through it in one hour.
Another thing is thermal energy transmittance. This parameter determines the transmittance of solar energy falling on the outside of the glass and passing inside the rooms. The higher the g-factor, the more energy "passes" through the windows to the rooms, heating them. In winter, sunny rooms are appreciated, but in summer overheating may be undesirable.
The number of chambers and the structure of the window profile
These parameters of good plastic windows are also of great importance and it is plastic profiles that ensure the best thermal insulation. Why? The physical properties of PVC material allow them to be designed and constructed in such a way as to ensure only minimal heat loss.
Not so long ago, five-chamber windows were the generally applicable standard. The change in the Technical Conditions for 2021 meant that seven-chamber windows with 3 panes became the norm. The space between the panes is filled with a noble gas - most often argon or less often xenon. Note that the inter-pane width should not exceed 18mm. Greater width is a problem of moving gas, which brings with it a reduction in the expected parameters of good plastic windows.
The parameters of a good plastic window are not everything. It is always necessary to follow the rules of the art of proper assembly. However, this is a topic for another article.
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Parameters of good plastic windows from OKNARIO
Source: https://oknario.pl
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