Glass patio doors provide uninterrupted views of your scenic backyard and patio area. The sliding design is a space-saving feature that makes these patio doors a practical option for smaller homes. Most glass doors today are double-glazed—they have two panes of glass separated by a gas-filled space. However, you may still find single-pane patio doors on the market. If you are torn between these two options, opt for double-glazed glass. Here are the reasons why you should use double-glazed glass for your sliding patio doors.