Roof Underlayment Flashing Install

But first we re going to flash the eave with metal drip edge flashing and install the roofing membrane over it along the bottom edge of the roof.

Roof underlayment flashing install.

Install underlayment a minimum of 6 inches up roof protrusions or vertical abutments. Installing roof felt is a two person job. Install synthetic roofing underlayment or felt paper according to manufacturer specifications and then install the first piece of valley flashing. Fold the top over the roof ridge and cut the bottom along the drip edge metal.

Fasten drip edge on eaves with. Again do not drive nails through flashing. Now it s time to install the underlayment and flashing. Then install shingles on the other side.

Then install a non corrosive metal valley flashing of 24 minimum width. Using your staple gun secure the felt to the roof. In that installation the lower edge of the felt must be on top of not underneath the drip edge. 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.

That is the drip edge flashing is the first item installed onto the roof sheathing or atop old shingles in a multi layer shingle re roof job. Install final flashing material. With underlayment and flashing installed apply shingles up to one side of the flashing. Apply an approximately 3 inch.

These pieces act as a weather proofing and protective barrier between your house and the elements helping keep water and cold temperatures out. Start by laying asphalt felt or other underlayment over the roof. Recommended procedures of basic valley flashing installation. Pry away the siding and slip the felt under the siding.

Lap successive sheets of metal flashing a minimum of 12 inches and seal laps. Where the roof meets a wall lap the felt up 4 inches if possible. In some situations you may have to temporarily remove the siding and replace it after installing the underlayment shingles and flashing. You ll have to overlap shingles as you go much like weaving.

Nail metal drip edge flashing which bends over the roof and down the edge of the facing board on all roof edges. Do not drive nails into the flashing. To make corner flashing take your tin snips and cut a 45 degree line from an outside corner to the center fold. Cap staples are recommended on this underlayment every 12 inches along the bottom and every 24 inches in the middle.