One of the prominent features of energy-efficient double-glazed windows is the gas fill between the panes. When manufacturers started producing double glazing in the 1950s, air was first used as fill. After a few decades, inert gases like argon started being used. Windows with argon gas fill became a popular choice for many homeowners due to their better insulative qualities.
This article explains further how argon became the gas fill for double-pane windows and the benefits homeowners can get with this element in their fixtures.
Early Gas Fills
Air as a fill wasn’t effective in providing insulation, so some manufacturers started looking for alternatives. The 1970s saw the use of carbon dioxide and Freon. Although they helped increase the insulation value of windows, they were proven to be sensitive to seal failure and cause discoloration.
Argon and Krypton
It was during the 1980s when manufacturers began placing inert gas fills in casement windows. Two of them, argon and krypton, are known for chemical properties that make them suitable fits. They are non-toxic, clear and odorless gases.
Krypton is utilized when the space between the glass panes is about a quarter of an inch. It provides better thermal performance than argon, though it costs more. Argon is used for bigger spaces, around half an inch. It can be mixed with krypton to keep costs low while ensuring thermal performance.
Benefits of Argon-Filled Windows
Albeit in a smaller scale, the argon gas fill contributes to the overall thermal performance of energy-efficient windows. Together with low-emissivity (Low-E) glass, the window becomes effective in the following areas:
- Ultraviolet ray (UV) protection
- Minimal heat transfer or exchange
- Enhanced soundproofing
- Increased R-value or the capacity of an insulating material to resist heat flow
Renewal by Andersen® of Quad Cities offers replacement windows styles, such as bow windows, that utilize high-performance glass with an argon glass blend. Combine this component with the others like the advanced Fibrex® material, and you have an energy-efficient window that performs well in any climate.