How Far Should Roof To Wall Flashing Overhang The Eaves

This can make extensive roof overhangs more trouble than they are worth in all but the harshest climates.

How far should roof to wall flashing overhang the eaves. However the suggested width of an overhang is between 12 and 18 for eaves and no more than 8 for rakes. Roof overhangs can extend farther than 2 feet but beyond this length they begin to lose structural integrity and require external supports. Too little can allow water to seep into rake or fascia boards. Too much overhang and the shingles could blow off in high winds.

Lengths of drip vary but typically it s sold in ten foot lengths 120. That said overhangs can extend as far as 2 without the need for external supports. An eave is the edge of the roof that overhangs the face of a wall and normally projects beyond the side of a building. Metal is usually installed on rafters or strip sheathing rather than the solid decking used under other materials.

Roof overhangs at the eaves and rakes protect the walls below from rain and sun. But are they really necessary. Some slight overhang is recommended in conjunction with a drip edge flashing to prevent water from getting under the roofing and onto underlying wood. Usually you won t see much of drip edge as it s under the roof shingles under the underlayment and behind the roof gutter.

A typical metal roof overhang may be 2 to 4 inches or even less. They also help to frame windows on upper stories. Overhangs can vary from a few inches to a few feet depending on preference. Eaves form the overhang to distribute water clear of the walls.

Eaves are located at the down slope edge of a sloped roof and serve as the transition between the roof and fascia wall. The sketch above illustrates the end profile of roof drip edge flashing and shows its placement on the roof. This will protect a roof from most types of damage. Protect the eave from ice dams and sideways rain step one in steep slope roofing is the edge flashing.

Overhangs are extensions of the roof beyond the exterior wall i e the joists. An eave typically has a metal edge flashing and gutter that are attached to a wood fascia trim board. One common method is to lay the edge metal under the eaves membrane and over the rake image.