Arid climates receive little rainfall that can cause roof decay and the least danger of decay through.
Roof overhang length.
You can add 3 to 5 inches to the top.
What is the maximum length of a roof overhang.
Overhangs can vary from a few inches to a few feet depending on preference.
In moderate climates there is some damage of wood decay and a roof overhang is recommended.
That said overhangs can extend as far as 2 without the need for external supports.
A shed overhang is an easy and effective way to protect your shed.
Though most overhang regardless because of discrepancies of the facia being straight so they run metal past to let it appear straight.
However the suggested width of an overhang is between 12 and 18 for eaves and no more than 8 for rakes.
Some slight overhang is recommended in conjunction with a drip edge flashing to prevent water from getting under the roofing and onto underlying wood.
The roof overhang will be 36 inches at the eaves measured horizontally and 36 inches at the gable ends.
This will keep rain away from your shed.