Remember that pitch is calculated as the height or rise of a roof pitch over 12 inches of horizontal run.
12 pitch shed roof.
The picture below shows the pitch of a 7 12 roof slope meaning that for 12 of horizontal measurement roof run the vertical measurement roof rise is 7.
That means the roofing material you choose needs to protect the materials underneath to prevent water damage and leaks.
The term pitch refers to the slope of the roof.
In order to adhere to standardized building codes and ensure adequate runoff your shed s roof must have a pitch of at least 3 12 read as three in twelve.
If you have a roof with a pitch that is less than 3 12 you should not use 2x4s.
In roofing it is expressed in inches of vertical rise over inches of horizontal run.
As stated in the.
This measurement is best done on a bare roof because curled up roofing shingles will impair your measurement.
Constructing a new shed roof at the desired pitch is as easy as knowing how to use a speed square.
Low pitched roofs aren t able to shed water and snow as easily.
Remember this advice applies only to shed roofs that have a pitch greater than 3 12.
The roof pitch measures the steepness of your shed roof and typically takes values from 1 to 12.
If your roof pitch is greater than 3 your roof is considered pitched read more about roof pitch at wikipedia.
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.
A 2 12 roof slope is considered low so the roofing materials you would use on a steeper roof may not work.
A 4 12 pitch being 4 inches of vertical rise over one foot or 12 inches of horizontal run.
Determine your desired roof pitch.
The shed roof pitch has two slopes and the window above eaves level allows additional light into the shed.
Beyond that you re free to choose whatever slope best fits your plans for your shed.
If you do opt to use 2 4 shed rafters for your roof construction you will always use a 2 6 ridge beam even though the rafters will be 2 4.
Both systems work and i have a table below that will help you to translate from one to the other.
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.
For the shed roof pictured above the back has a 5 12 pitch.