Insulated Headers Over Windows and Doors
Here is one technique for energy efficient construction (Green Construction). Insulating the header over the windows and doors. It might not seem like a big deal but every little bit counts when looking to improve efficiency. It should be applied during the framing phase of the house.
We use on most of our exterior doors insulated dual or triple pane glass to increase energy efficiency. One of our best seller entry doors collection is the Mahogany Expo Doors. All the doors in the Expo collection feature triple pane insulated glass.