A roof window tends to be bigger than a skylight, allowing you to enjoy a broader view of the sky overhead. There is actually no significant difference between the skylights and dormer windows, but the skylights usually refer to a smaller surface.
Both skylights and roof windows are tilted, to a sloping roof surface. Check this out to know more about skylights windows. The roof window is better than the vertical illumination. In certain areas, the difference can be as much as 40%.
As a sloping roof window is installed directly onto the roof surface, there is no dedicated framework is needed and the installation of roof windows is reasonable.
Roof windows loss
The roof window does not add any space to the attic or ceiling because they just copy the roof. Also, the view from the roof window is limited slightly compared with a rooftop view window.
The roof windows profits
Roof windows enhance the attic space or ceiling. The vertical viewing of roof windows also offers a better view as you get closer to the object viewed.
The roof window damages
In contrast to the sloping roof window, it faces direct daylight with a smaller surface, which allows less light in.
Also, the roof window installation is usually more expensive and it requires planning and resources from the sloping roof installation window.