Pooling water on a roof can cause leaks and other damage.
Shed roof advantages and disadvantages.
A metal roof is a 100 upgrade easy to repair.
It does shed rain and snow shed more easily with the greater slope.
In the past people used shed roofs exclusively for their garden sheds and garages.
At bylers architectural shingles are standard on all sheds and are included in the price of a building.
Granted they also get damaged more easily.
A basic roofing design with only one slope is easier and less time consuming to work on for contractors and this translates into lower roofing construction costs.
Since a shed roof generally has a much steeper slope it usually lets the water roll right down it and over the edge.
Lots of built up snow adds extra weight to the roof that can also cause damage so shedding water and snow more efficiently is a definite advantage.
It has a lower profile than the skillion or gable so may be more suitable to some neighborhoods.
Shingles have a lower initial cost.