What double -glazed windows are used for plastic windows
Om double -glazed window is called the transparent part of the window. That is, a set of glasses. Currently, double -glazed windows are made of 2 glasses and more. A small trick to determine the amount of glasses in the double-glazed window can be determined using a lighter, we bring a lit lighter to the glass (not in a dense one at a distance of 2-5 cm) and look at the reflection in the glass, how many glasses we will see in the glass packet.
The most common double -glazed windows consisting of 2 or 3 glasses. Modern glass for double -glazed windows are produced high quality and it is difficult to determine the glass or not, such a high translue in modern glasses is inserted.
Also glasses with a variety of spraying. There is a spraying that reflects heat to the house. There are glass covered with a special film, such glasses have a higher blow to the strength or even armored. There are also films reflecting. And many other innovations.