How Much Overhang For Roof Sheathing

The roof sheathing comes down and ends on top of the 1 x fascia.

How much overhang for roof sheathing.

That said overhangs can extend as far as 2 without the need for external supports. Some slight overhang is recommended in conjunction with a drip edge flashing to prevent water from getting under the roofing and onto underlying wood. On my shed my sheathing does not protrude actually how both my house and shed are done is a 1 x 6 house 1 x4 shed fascia is installed to end of rafters then 1 x 1 1 2 is tacked onto the fascia at the top. Roof sheathing comes in grid marked 4 by 8 foot sheets and should be installed perpendicular to the frame.

Metal is usually installed on rafters or strip sheathing rather than the solid decking used under other materials. I ve trimmed my roof sheathing to run between 5 8 and 3 4 over the sub fascia. 8d ring shank nails should be used instead. This is to just enough to cover the 3 4 x6 actual fascia.

Sheathing should be a minimum of 19 32 inch thick. It is at 45 3 4 in. The typical thickness range for sheathing is 3 8 to 3 4 inch. However the suggested width of an overhang is between 12 and 18 for eaves and no more than 8 for rakes.

Roof sheathing overhang on fascia. Measure up the rafter 45 3 4 inch from the cut end of the truss tail and snap a line along the trusses. Never attach roof sheathing with staples. A typical metal roof overhang may be 2 to 4 inches or even less.