Roof Sheathing Overhang

In the u s roof sheathing is almost always composed of wood usually osb oriented strand board or plywood.

Roof sheathing overhang.

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. A tapered piece of sheathing can be cut to fill in at the eave if necessary. Metal is usually installed on rafters or strip sheathing rather than the solid decking used under other materials. 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.

A typical metal roof overhang may be 2 to 4 inches or even less. Add the thickness of the true fascia 15 16 in in this case. 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. Some slight overhang is recommended in conjunction with a drip edge flashing to prevent water from getting under the roofing and onto underlying wood.

To stabilize the rafters support the roofing material and hold the entire roof together roof sheathing is installed. Align the long edge of the sheathing with the ends of the. Add an inch and a half for subfascia strike a line. The exposed edges of the 3 layers of rigid insulation are no longer exposed.

Roof sheathing or decking is one of those elements. Position the first piece of plywood or oriented strand board sheathing on the bottom edge of the rafter tails at one end of the roof. Osb is lightweight relatively inexpensive and strong enough to resist bending or breaking should someone walk on the roof. Nail the drip edge to the roof sheathing at roughly 18 24 spacing intervals using roofing nails.