How Much Overhang For Roof Sheathing

Metal is usually installed on rafters or strip sheathing rather than the solid decking used under other materials.

How much overhang for roof sheathing.

Never attach roof sheathing with staples. Some slight overhang is recommended in conjunction with a drip edge flashing to prevent water from getting under the roofing and onto underlying wood. Roof sheathing overhang on fascia. This is to just enough to cover the 3 4 x6 actual fascia.

This indicates the upper edge of the first row of roof sheathing leaving enough overhang that the subfascia and fascia will tuck neatly underneath when the time comes. The typical thickness range for sheathing is 3 8 to 3 4 inch. 8d ring shank nails should be used instead. Sheathing should be a minimum of 19 32 inch thick.

A typical metal roof overhang may be 2 to 4 inches or even less. The roof sheathing comes down and ends on top of the 1 x fascia. That said overhangs can extend as far as 2 without the need for external supports. Measure up the rafter 45 3 4 inch from the cut end of the truss tail and snap a line along the trusses.

Then i do a metal drip edge to cover it all. Overhangs can vary from a few inches to a few feet depending on preference. 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. However the suggested width of an overhang is between 12 and 18 for eaves and no more than 8 for rakes.