Roof Sheathing Overhang

Osb is lightweight relatively inexpensive and strong enough to resist bending or breaking should someone walk on the roof.

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 typical metal roof overhang may be 2 to 4 inches or even less. Add an inch and a half for subfascia strike a line. To stabilize the rafters support the roofing material and hold the entire roof together roof sheathing is installed.

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. Add the thickness of the true fascia 15 16 in in this case. 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. Roof sheathing or decking is one of those elements.

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. Points to the installation of ice and water shield along the lower roof eaves protecting against ice dam leaks that are common on un vented roofs in cold weather or snow climates. In the u s roof sheathing is almost always composed of wood usually osb oriented strand board or plywood. Align the long edge of the sheathing with the ends of the.

Metal is usually installed on rafters or strip sheathing rather than the solid decking used under other materials. Nail the drip edge to the roof sheathing at roughly 18 24 spacing intervals using roofing nails. A tapered piece of sheathing can be cut to fill in at the eave if necessary. Some slight overhang is recommended in conjunction with a drip edge flashing to prevent water from getting under the roofing and onto underlying wood.