This homeowner wanted to reduce heat loss in his basement. Single pane glass windows with metal frames let lots of cold air leak into the basement. They also allow heat to escape by conduction through the cold glass. Our Team installed our Everlast sliding basement windows with double pane glass. These windows have a special metallic "Low E" coating on the inside to reduce heat flow through the glass. The new windows look great and will reduce overall air leakage in the home.