Double glazing is an innovation that is rapidly gaining popularity and becoming a standard feature in many new homes across the country. Insulating glass usually consists of at least two or more panes of glass separated by a thin layer of air or gas filled air to prevent heat transfer between a specific part of the structure envelope and the outside. This keeps the interior of the house cooler during the summer and warmer during the winter, allowing homeowners to save money on energy costs. While double glazing is primarily used for windows, it can also be used on doors, walls, attics, and skylights. The type of glazing selected for a particular application will depend on the location, size, and expected temperature variations.
When shopping for double glazing, it’s important to understand exactly why the system was created. In the case of an existing home, when the existing windows are replaced with new ones, there is already existing glass between the panes of glass. This is good for reducing draftiness since there is no need for any additional insulation, but there is one major drawback. The opening between the existing glass and the space where the new window is going to be installed is often much smaller than the opening between the first and second pane of glass. By adding a second pane of glass, engineers have created a space that takes up less space and allows heat to disperse evenly throughout the house.
To create a sealed space, the space must be insulated using two panes of glass or insulated glass with a sealed unit. In a standard installation, the space is filled with air or with a gas such as argon, krypton, or xenon. When choosing the size of the double glazed unit, it’s best to get the recommended insulation specifications for the area where the window will be installed. The recommended amount of insulation is based on average temperatures for the area and multiplied by the square foot to ensure the right amount of gas or air is present. It’s important to note that in a cold climate, double glazing should be supplemented with a heat source such as a fireplace.