Double glazed windows have been with us for years now. It is likely that all windows in your home are double glazed. Do we know the science behind their construction? How does this science generate the benefits?
It is a well-known fact that the majority of domestic heat is lost through windows and roofs. Heat loss has an impact on your energy bill and your carbon footprint. The installation of double glazed windows could save you £ 165 a year (using at least category B windows). Naturally, you will use less energy (less fuel), so that the amount of carbon dioxide generated will also be reduced. Carbon dioxide is a major contributor to global warming.
The windows are built with two layers of glass with a small, reliable air gap. This gap is essential to the quality and extremely how the window works. The air gap has two main uses. It is too small to circulate in the air, resulting in heat transfer. The air inside the space is a poor heat conductor, reducing the heat loss of the property. The gap is usually filled with a desiccant to remove moisture that could have been trapped in the manufacturing process. The window frame can be built with one of a few materials. These materials could be PVC, wood, aluminum / steel or composite. PVC is very popular because it has a longer life and can be recycled. Wooden frames require maintenance but are commonly used in old, conservation or classified buildings. Triple glazing (containing three glass sheets as its name indicates) also exists, but tests have shown that these do not require much work better than standard double glazing. A secondary benefit of double glazing is the fact that the noise entering and leaving the property is reduced.
The vast majority of window manufacturers evaluate the energy efficiency of their windows on a scale from G to A, where A is the most efficient. Windows rated B and above have a recommended energy saving confidence rating. logo. This is a seal of approval that reassures the customer on the quality of the window.
Double glazing can not be installed on all properties. If you live in a listed building, you may not be able to install such a window. In this case, there are alternatives such as secondary glazing. Secondary glazing is the process of mounting a window just inside the existing window. This acts as a double glazed window but is not as effective as it will not be as well sealed.