The best way to add natural light and ventilation, and also add to the full height area of a loft conversion, is the inclusion of one or more dormer windows. A dormer window is a window built vertically into the existing roof slope and should be both compatible with and complementary to the existing building.
To achieve this compatibility there are two important points to consider – style and size. Unlike the vast majority of home extensions, an attic conversion will impact heavily on the existing building, so particular care in design must be taken.
The choice of dormer style may be heavily dependent upon local building design factors and the overall size of the area being converted.