How Far Should Roof Sheathing Overhang Fascia

Some slight overhang is recommended in conjunction with a drip edge flashing to prevent water from getting under the roofing and onto underlying wood.

How far should roof sheathing overhang fascia.

This is to just enough to cover the 3 4 x6 actual fascia. Soffits appear anywhere a roof extends beyond the walls by more than a few inches. Metal is usually installed on rafters or strip sheathing rather than the solid decking used under other materials. The drip edge will be installed 1 8 proud of away or out from the furring strip in best practice or may be installed tight against the furring strip reduces the life of the furring strip by rot.

Roof sheathing overhang on 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. Starting with how to place the first row of sheathing we cover fastening methods the use of h clips stagg. 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.

We go in depth on how to install roof sheathing. I ve trimmed my roof sheathing to run between 5 8 and 3 4 over the sub fascia. Nail thefurring strip to the fascia board near the fascia top tight under any extending of roof decking usually absent. 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.

It is at 45 3 4 in. 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. That said overhangs can extend as far as 2 without the need for external supports. Measure up the rafter 45 3 4 inch from the cut end of the truss tail and snap a line along the trusses.

Most houses have fascia running along all of the eaves the overhangs at the bottom of the roof. Overhangs can vary from a few inches to a few feet depending on preference.