How Far Should Roof Sheathing Overhang Fascia

The lower edge of a roof should extend beyond the fascia board by about 3 4 inch so that runoff drains into the gutters.

How far should roof sheathing overhang fascia.

Soffits appear anywhere a roof extends beyond the walls by more than a few inches. Some slight overhang is recommended in conjunction with a drip edge flashing to prevent water from getting under the roofing and onto underlying wood. Overhangs can vary from a few inches to a few feet depending on preference. This is to just enough to cover the 3 4 x6 actual fascia.

I ve trimmed my roof sheathing to run between 5 8 and 3 4 over the sub fascia. That said overhangs can extend as far as 2 without the need for external supports. It is at 45 3 4 in. 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.

Metal is usually installed on rafters or strip sheathing rather than the solid decking used under other materials. We go in depth on how to install roof sheathing. Roof sheathing overhang on fascia. Measure up the rafter 45 3 4 inch from the cut end of the truss tail and snap a line along the trusses.

However the suggested width of an overhang is between 12 and 18 for eaves and no more than 8 for rakes. Starting with how to place the first row of sheathing we cover fastening methods the use of h clips stagg. Homes that have gable roofs the classic roof style with triangle topped walls at each end also have fascia running up the gable ends of the roofline. 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.

Most houses have fascia running along all of the eaves the overhangs at the bottom of the roof. If this slight overhang is too short water will drip behind the gutters leading to rotted roof sheathing and fascia stained siding and even soil erosion and a flooded basement.