Framing Gable and Shed Dormers
Whenever adding any type of dormer, it's essential to determine the roof load and design the load path transfer to the existing floor joists or roof rafters. Then you can ensure adequate bearing points, or add framing and install beams to carry the loads through the walls down to the foundation. It wouldn't be a bad idea to consult a structural engineer for guidance, especially on larger dormers.
Oxfordshire Loft Conversions Case Study - Pitched Roof Dormer Loft Conversion
Pitched roof dormer windows are generally built to create extra space within a roof that already benefits from usable space but needs more headroom, floor space and light in certain areas. For example you may need to use a dormer window to get access for a set of stairs or headroom at the top of a staircase.
5 Types of Dormers | The Craftsman Blog
Dormers are like the eyes of a house. Resting on roof tops they add headroom and light to upper stories and add interest to an otherwise plain roofline.