The correct placement of a roof drip edge is on top of the roof s exterior cover directly between the sheathing and the fascia board which forms a drainage gap between the drip edge and the fascia board.
Roof drip edge sizes.
Union corrugating 4 5 in x 10 ft white aluminum drip edge.
Amerimax f4 1 2 2 43 in x 10 ft white galvanized steel drip edge.
Lengths of drip vary but typically it s sold in ten foot lengths 120.
Gibraltar building products 12 ft.
For pricing and availability.
The length of the overhang itself commonly ranges from 2 to 5 inches.
Roof drip edges are generally sold in 10 5 foot lengths but they are occasionally sold in 8 foot lengths or smaller.
As a result the drainage improves water flow and protects the roof from potential water damage.