Terms of the Trade: What Is a Dormer Window? Terms of the Trade: What Is a Dormer Window?
A dormer window is a window that sticks out of a sloped roof. Dormer windows feature their own roof. Dormer windows increase headspace, which can improve functionality in the upper level of your home. They can also improve ventilation and allow more natural light into a room. They can be difficult to install and require a lot of technical knowledge.