How Does Double Glazing Reduce Heat Loss?

Double glazed windows are becoming popular in both home and commercial applications. There are many benefits to having two panes of glass in each window. One of the most helpful benefits is the massive reduction in heat loss compared to standard single-paned windows.

Vacuum Effect

Double glazing of a window simply means that there are two pieces of glass that make up the window. Instead of the two pieces of glass being directly next to each other, there is a slight gap in between both pieces of glass. A near-vacuum exists in between the pieces of glass. The reason for this is simple, heat does not pass through a vacuum. Although a perfect vacuum does not exist between the two panes of glass, it is close enough to drastically reduce heat loss.

Using Thermos Technology

The idea for double glazed windows is not unlike the thermos that many people use to take coffee or soup to work. In between the inner and outer flasks is a vacuum much like you would find between two pieces of glass in a double glazed window. Just as the thermos keeps the warmth of the liquid inside the container, the double glazed window uses the same principle. 

Proper Sealant 

A double glazed window is nothing without a proper sealant. Without it, the heat will simply escape from the cracks around the window. It is important that these special windows are carefully sealed with high-grade caulk, so that the effect of the windows is not mitigated.