If the dormer is built above living space rather than over an attic or if you re converting attic space to living space then it provides much needed natural light.
Minimum roof pitch for dormers.
This image shows a relatively shallow roof pitch of 15 degrees.
Roof dormers add light.
A shed dormer on the other hand is usually had on homes with a roof pitch of at least 8 in 12 or steeper.
Minimum roof pitch the minimum pitch for a roof is 1 4 12 which translates to 1 4 inch rise to 12 inches of run.
The loft space would be much larger with a roof pitch of 45 degrees.
That pitch is too shallow to hold the shape of the dormer.
These are the windows that seem to stick out from the face of a roof.
However you can only use this pitch with built up roofing or specialized.
A shallow pitch cannot sustain a dormer window simply because the interior space makes a dormer window impossible.
It would end up looking very long and awkward.
Having a steeper pitched roof allows for more space in a shed loft.
Dormers are wonderful spots for a reading nook kids play area dressing area and other uses where extra light is a bonus.
This type of dormer needs a roof pitch shallower than that of the original.