Install Valley Flashing Existing Roof

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Install valley flashing existing roof. Install flashing on existing roof to extend the lifespan of your roof. Cut the bottom edge and fold it down over the drip edge. Protect the eave from ice dams and sideways rain step one in steep slope roofing is the edge flashing. Fold the top of the flashing over the ridge.

Remember to caulk the underside of the flashing with a sealant. In this video i show you how i do the valleys on a shingle roof. Step 6 install the flashing. Install the valley battens on the sides of the roof that you want to place the valley flashing.

One common method is to lay the edge metal under the eaves membrane and over the rake. So if you are installing a woven valley you must push the shingles snugly into the valley while not nailing within six inches of the valley center. Two ways to flash roof edges. Then install a non corrosive metal valley flashing of 24 minimum width lap successive sheets of metal flashing a minimum of 12 inches and seal laps.

Many roofers cut the shingles across because they say it s safer. The woven valley shingle installation method does not call for roofing cement relying instead on the weave pattern to protect from water infiltration. Recommended procedures of basic valley flashing installation. Install valley battens on both ends of the roof valley then attach first flashing 3 4 inches over the roof flange and another 3 4 inches over the fascia if any is present.

To avoid this cancel and sign in to youtube on your computer. Place the flashing on the upper portion or the upper flange of the batten. Finally reattach all shingles removed in the process. A batten is a roofing component made of a thin layer of metal plastic or wood and is used as a fixing point for roof tiles and roofing sheets.

Others start with a 3 inch wide. How to do it determine cuts. Some roofers cut the shingles parallel to the flashing s center ridge. Install an underlayment centered in the roof valley.

Use roofing nails to install the l shaped flashing flush with the roof and wall then cover it with roofing cement and reattach the roofer s felt. Make sure to cover the gap at the bottom of the raised ridge. Snipping off the corners of. Apply an approximately 3 inch.

Now nail this first flashing at both its far ends. To splice the pieces add roofing cement to the lower piece and install the upper piece with at least a six inch.