Normal Roof Overhang

Eaves form the overhang to distribute water clear of the walls.

Normal roof overhang.

The roof overhang will be 36 inches at the eaves measured horizontally and 36 inches at the gable ends. As a rule there are two popular methods in framing it pant or flat roof overhang and gable roof overhang. An eave is the edge of the roof that overhangs the face of a wall and normally projects beyond the side of a building. Additionally forming this needs to pay attention to the edge of your roof.

Metal is usually installed on rafters or strip sheathing rather than the solid decking used under other materials. However there is also an architectural purpose to them. They also help to frame windows on upper stories. Roof overhangs can extend farther than 2 feet but beyond this length they begin to lose structural integrity and require external supports.

There is a certain logic in extending the gable overhang further the higher you get as you mention but that complicates the roof and i don t like the look of it. That is their functional purpose. Two feet is the general maximum length for a typical roof overhang. A typical metal roof overhang may be 2 to 4 inches or even less.