Should Roof Sheathing Overhang Fascia

Overhangs can be open in which the trusses rafters and decking are exposed see figure 1 or enclosed by a soffit.

Should roof sheathing overhang fascia.

A shed roof overhang is something most homeowners don t think about until their standing in the rain trying to get the door unlocked or fretting about all the water that s suddenly pooling around the shed s foundation. Roof sheathing or decking is one of those elements. Never attach roof sheathing with staples. In the u s roof sheathing is almost always composed of wood usually osb oriented strand board or plywood.

This opens the door to the possibility of water damage by letting gravity work against you. On roofs with no eaves overhang or soffit proper installation of drip edge proud of the fascia board at the wall top is very important to avoid water damage to the building walls below. Sheathing should be a minimum of 19 32 inch thick. Don t overhang the sheathing at all.

Plywood is a bit more expensive but is usually. Use your speed square on the fascia board and run the sheathing down to that. This is to just enough to cover the 3 4 x6 actual fascia. When sheathing a roof the first step is to snap a line so that the first row goes on straight.

But if you snap it at 40 inches then the sheathing will not project over the subfascia or true fascia. Osb is lightweight relatively inexpensive and strong enough to resist bending or breaking should someone walk on the roof. Roof sheathing overhang on fascia. Now that i ve modeled what i was going to build i decided i need a piece of molding to break up the plain look of just the fascia trim plank.

Roof sheathing comes in grid marked 4 by 8 foot sheets and should be installed perpendicular to the frame. Make sure it is square level etc. I ve trimmed my roof sheathing to run between 5 8 and 3 4 over the sub fascia. Soffits are commonly constructed from fiber cement panels metal panels stucco vinyl panels or wood sheathing.

The typical thickness range for sheathing is 3 8 to 3 4 inch. Use 2x6 for fascia board. Under it from the sun. 8d ring shank nails should be used instead.

Building a shed roof with an overhang is an important part of protecting your shed and thus should not be overlooked.