There are advantages and disadvantages to having a steep pitch versus a shallow or low pitch the most obvious of which is the roof s ability to shed or withstand heavy snow rain or wind.
Good roof pitch for shed.
This slope works well for sheds that are fairly narrow like 4 to 6 feet but for sheds that are 8 or wider the shed roof becomes unsightly high.
The loft space would be much larger with a roof pitch of 45 degrees.
Shed roof pitch calculator.
Roof pitch for the shed roof pictured above the back has a 5 12 pitch.
It is expressed as x y where x rise and y run for example 4 12 or 5 12 and so on.
Worth noting is that the higher the first number in the equation is the steeper the pitch of your shed roof will be.
This image shows a relatively shallow roof pitch of 15 degrees.
How to measure determine shed roof pitch in the simplest possible terms shed roof pitch is defined as the amount of rise per foot of run.
If you have to go with a roof pitch less than 3 12 then it would either have to be a metal roof or a roof covered with a rubber membrane to prevent water penetration.
Asphalt shingles typically have a minimum slope rating of 4 in 12.
This means that for every 12 inches of horizontal distance across the shed the roof will rise 4 inches.
Having a steeper pitched roof allows for more space in a shed loft.
Basically the steeper the pitch the better it can shed snow and rain.