How Far Should Roof Sheathing Overhang Fascia

Nail thefurring strip to the fascia board near the fascia top tight under any extending of roof decking usually absent.

How far should roof sheathing overhang fascia.

Most houses have fascia running along all of the eaves the overhangs at the bottom of the roof. 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. I ve trimmed my roof sheathing to run between 5 8 and 3 4 over the sub fascia.

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

We go in depth on how to install roof sheathing. 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. Starting with how to place the first row of sheathing we cover fastening methods the use of h clips stagg. A typical metal roof overhang may be 2 to 4 inches or even less.

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. 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. That said overhangs can extend as far as 2 without the need for external supports.

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. Soffits appear anywhere a roof extends beyond the walls by more than a few inches.