Double-glazing windows were first developed in the early 19th century. The initial idea was to create a window that would reduce the amount of heat loss in a room, thereby making it more comfortable to live in. The first double-glazed windows were made with two panes of glass and a space between them that was filled with air. The science behind double-glazing windows is quite simple. The windows are made up of a window frame, glass, a spacer bar and desiccant, sealants and insulating gas. The window frame is typically made of wood, metal, or plastic. The glass is usually clear, but it can also be tinted or frosted. The spacer bar is what keeps the two panes of glass separated. It is made of metal or plastic and is filled with a desiccant, which helps to absorb moisture. The insulating gas is what helps to keep the heat in and the cold out. It is typically argon, but it can also be krypton or xenon. The seals around the edge of the window keep the gas from escaping.To know more about uPVC windows and doors in Melbourne visit us now. http://supertekwindows.com.au