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A secondary window is an easy and budget-friendly way to properly insulate windows with single glazing. This is an easy way to save on your energy consumption. It is an extra window that you simply place on top of an existing window. In addition to insulation, a secondary window gives the window extra protection and is soundproof. With clear secondary windows you can choose from two types of plastics:
Acrylic is the most obvious choice. If there is also a need to protect against vandalism or burglary, polycarbonate is a better choice. In addition, polycarbonate is self-extinguishing.
The coefficient of thermal conductivity indicates how well a material insulates. The lower this value, the better the material insulates, so the higher the insulation value. Acrylic has a thermal conductivity coefficient of 0.19 W/(km) and polycarbonate 0.20 W/(km). This is significantly lower than the conductivity of single glass (float glass), which has a value of 0.80 W/(km). Plastic secondary windows are therefore an easy way to save on your energy consumption!
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