Basically the steeper the pitch the better it can shed snow and rain.
Googd roof pitch for shed.
It is expressed as x y where x rise and y run for example 4 12 or 5 12 and so on.
This image shows a relatively shallow roof pitch of 15 degrees.
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.
Therefore if your roof rises 4 inches over the course of 12 inches of horizontal run then your roof pitch is 4 12.
This means that for every 12 inches of horizontal distance across the shed the roof will rise 4 inches.
In the simplest possible terms shed roof pitch is defined as the amount of rise per foot of run.
Asphalt shingles typically have a minimum slope rating of 4 in 12.
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.
Having a steeper pitched roof allows for more space in a shed loft.
As stated in the video speed squares have useful markings on them from 0 to 12.
Remember that pitch is calculated as the height or rise of a roof pitch over 12 inches of horizontal run.
The loft space would be much larger with a roof pitch of 45 degrees.
It is determined by finding the rise amount in each foot run.
Constructing a new shed roof at the desired pitch is as easy as knowing how to use a speed square.