How Far Over The Wall Should The Roof Extend

A architect and roofing consultant harrison mccampbell responds.

How far over the wall should the roof extend.

Erect extension ladders so that the upper section rests on e g in front of the bottom section. This placement means the bottom section faces a wall or other supporting surface see figures below. Its top edge is tucked up under the shingles and its outside face is where the gutter is mounted. Because this style of a shed has a flat roof it can facilitate a wider overhang which is ideal for storage.

How far beyond the drip edge should an asphalt shingle extend. No flashing at the roof edge. Some metal roofs have wood framed eaves that extend several inches or a foot beyond the house or shed wall to support metal roofing. Fascia and soffits finish the edges of roofs by covering the ends of the roof rafters or roof trusses where they overhang the sides of the house the fascia is the wide board that s installed on edge and runs horizontally along the edge of the roof.

Shingles extending off your roof deck the plywood osb or wood tongue and groove over your rafters and ice barrier or felt should extend over a metal drip edge roof apron or flashing. For gabled roofs the roof rafters extending beyond the wall caps creating an angled roof overhang on the eaves. Is the amount of overhang the same at the rake as at the eave. With a flat shed roof the roof simply extends past the wall plate to provide an overhang.

The back edge of the gutter should tuck up behind the dripedge if you have it otherwise the edge of the shingles should extend well over the back half of the gutter so the drips cannot get behind it and rot the fascia board. In others it s not. This gets snow and ice drip line farther away from the building walls without the danger of the metal roofing bending under the weight. A normal gutter will have about 1 2 3 4 of its width sticking out beyond the shingles to catch the runoff.