How Much Overhang On Roof Sheathing

Slide the sheet one rafter width over the end of the roof so the edge is centered on the next rafter offset one rafter spacing from the first piece of installed sheathing from the row below.

How much overhang on roof sheathing.

The typical thickness range for sheathing is 3 8 to 3 4 inch. Roof sheathing comes in grid marked 4 by 8 foot sheets and should be installed perpendicular to the frame. It is at 45 3 4 in. Metal is usually installed on rafters or strip sheathing rather than the solid decking used under other materials.

A typical metal roof overhang may be 2 to 4 inches or even less. 8d ring shank nails should be used instead. Measure up the rafter 45 3 4 inch from the cut end of the truss tail and snap a line along the trusses. Sheathing should be a minimum of 19 32 inch thick.

Over roof insulation the gable overhang has been cut flush with the wall sheathing. That said overhangs can extend as far as 2 without the need for external supports. Never attach roof sheathing with staples. This is to just enough to cover the 3 4 x6 actual fascia.

Fasten roof sheathing panels properly fasten panels with a minimum of 8d common 0 131 inch by 2 1 2 inch nails spaced a maximum of 6 inches on center at supported panel ends and edges. I ve trimmed my roof sheathing to run between 5 8 and 3 4 over the sub fascia. Roof sheathing overhang on fascia. However the suggested width of an overhang is between 12 and 18 for eaves and no more than 8 for rakes.

Overhangs can vary from a few inches to a few feet depending on preference.