How Far Should Roof To Wall Flashing Overhang The Eaves

Usually you won t see much of drip edge as it s under the roof shingles under the underlayment and behind the roof gutter.

How far should roof to wall flashing overhang the eaves.

Lengths of drip vary but typically it s sold in ten foot lengths 120. Too much overhang and the shingles could blow off in high winds. Eaves are located at the down slope edge of a sloped roof and serve as the transition between the roof and fascia wall. With composite siding such as boral s truexterior siding over a ventilated rain screen and with properly executed flashing at the windows and doors the walls on the fhb house will be able to handle rain just fine.

This will protect a roof from most types of damage. That said overhangs can extend as far as 2 without the need for external supports. Protect the eave from ice dams and sideways rain step one in steep slope roofing is the edge flashing. Overhangs can vary from a few inches to a few feet depending on preference.

Some slight overhang is recommended in conjunction with a drip edge flashing to prevent water from getting under the roofing and onto underlying wood. Overhangs are extensions of the roof beyond the exterior wall i e the joists. A typical metal roof overhang may be 2 to 4 inches or even less. Roof overhangs at the eaves and rakes protect the walls below from rain and sun.

They also help to frame windows on upper stories. Too little can allow water to seep into rake or fascia boards. The edge of the shingles should hang over a roof between an inch and an inch and a half or between a half inch and three quarters of an inch if drip edge flashing is installed. 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. But are they really necessary. An eave typically has a metal edge flashing and gutter that are attached to a wood fascia trim board. Eaves form the overhang to distribute water clear of the walls.

However the suggested width of an overhang is between 12 and 18 for eaves and no more than 8 for rakes. One common method is to lay the edge metal under the eaves membrane and over the rake image. Two feet is the general maximum length for a typical roof overhang.