Roof Sheathing Overhang

Sheath one slope of the roof at a time ripping the top course to the needed width at the ridge.

Roof sheathing overhang.

Add the thickness of the true fascia 15 16 in in this case. To stabilize the rafters support the roofing material and hold the entire roof together roof sheathing is installed. In the u s roof sheathing is almost always composed of wood usually osb oriented strand board or plywood. Roof sheathing basics the skeleton of a roof is formed with rafters or trusses generally spaced 16 inches or 24 inches apart from the center of one rafter to the center of the next.

Align the long edge of the sheathing with the ends of the. A typical metal roof overhang may be 2 to 4 inches or even less. Box beam gable framing new gable overhang is framed in the form of a box beam hanging off of a new layer of roof plywood roof sheathing cantilevered over the top of the 3 layers of rigid insulation. When one slope is completely sheathed pop a chalk line down any slope edge as in a hip roof that needs to be cut at an angle.

Roof sheathing or decking is one of those elements. Add an inch and a half for subfascia strike a line. A tapered piece of sheathing can be cut to fill in at the eave if necessary. Measure from the edge of the plywood outside of the wall over to whatever the overhang will be and square a line up to indicate the end of the truss tail.

Nail the drip edge to the roof sheathing at roughly 18 24 spacing intervals using roofing nails. Osb is lightweight relatively inexpensive and strong enough to resist bending or breaking should someone walk on the roof. Some slight overhang is recommended in conjunction with a drip edge flashing to prevent water from getting under the roofing and onto underlying wood. The exposed edges of the 3 layers of rigid insulation are no longer exposed.