Roof Underlayment Flashing Detail

Install your underlayment completely and your shingles up to where the wall begins so that the first piece of flashing or the corner flashing will rest on a shingle.

Roof underlayment flashing detail.

Valley flashing for roofs. We describe how to construct three common styles of roof valley. This article discusses details and specifications for roof valley flashing for best construction roof leak resistance. In every case the top edge of the flashing passes underneath the underlayment the upper pieces of flashing pass over the lower pieces and the lower edge of the flashing always passes over the top of the roofing material.

Details roofing wrb flashing. Synthetic underlayment and ice barrier membrane readily fold at this wall to roof joint. Open valley closed cut valley and woven roof valley and we include roof valley underlayment and nailing specifications. The sketch above illustrates the end profile of roof drip edge flashing and shows its placement on the roof.

But where no gutters are installed you might get a peek. To make corner flashing take your tin snips and cut a 45 degree line from an outside corner to the center fold. Usually you won t see much of drip edge as it s under the roof shingles under the underlayment and behind the roof gutter. Protect the eave from ice dams and sideways rain step one in steep slope roofing is the edge flashing.

One common method is to lay the edge metal under the eaves membrane and over the rake.