The future is us very warmly. Why? Therefore, the new building regulations define new thermal insulation windows. This means that manufacturers of windows will apply to the new parameters of thermal insulation of windows.
According to the European Directive 2010/31 / EU on 1 January 2021 will apply the new coefficients of heat transmission in the windows. The coefficient is to be as low as possible. The new regulations are introduced due to the demand for energy, which is needed to heat the home. New construction changes due to the process of reducing heat loss. It was considered that the windows greatly contribute to heat loss, and thus need a larger amount of energy needed to heat the house.
And what factors are to apply the new year? Well, PVC windows mounted vertically coefficient of heat now have a level of 1.3 W / m2K, and skylights – 1.5 W / m2K. According to the new technical conditions of January 2017 will amount to 1.1 W / m2K for vertical windows, while for roof windows – 1.3 W / m2K. Over the years the ratio will be gradually reduced. In 2021 years is expected to further reduce the coefficient of 0.9 W / m2K for vertical windows, and 1.1 W / m2K for roof windows.
What parameters affect the heat transfer coefficient? The first such factor is the glazing, which have the greatest impact for the thermal window. Standard packages are double glazed with a coefficient of about 1.1 W / (m2.K). Triple glazed while the packages are characterized by a ratio of 0.4 to 0.7 W / (m2.K). To achieve the requirements of the new construction law will be applied triple glazing.
This is also a little bad side, because the greater the number of layers will contribute to a weaker solar heat transmission through our windows. But the producers of windows and deal with this problem. The solution to this problem is to use a shell almost the launching of radiant heat from the room. In addition, the shafts used spacers made of stainless steel, and plastic instead of aluminum (aluminum poor conductor of heat).
Another factor affecting the rate of heat transfer are warm frames. Under the name hides the fact that frames making up the warm materials such as wood or plastic or from aluminum profiles equipped with thermal breaks. To further increase the thermal insulation applied to the frame of greater thickness.
All these factors have an impact on getting the most warm PVC windows. Each of us wants to have heat in the house and not enough to pay for electricity and heating. The new law should guarantee that in the near future.