Cut the bottom edge and fold it down over the drip edge.
Install valley flashing existing roof.
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.
Apply an approximately 3 inch.
Others start with a 3 inch wide.
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Step 6 install the flashing.
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How to do it determine cuts.
Now nail this first flashing at both its far ends.
Install an underlayment centered in the roof valley.
Fold the top of the flashing over the ridge.
Details concrete masonry roofing wrb flashing.
Some roofers cut the shingles parallel to the flashing s center ridge.
Place a piece of sheet metal under the shingles to make sure you will not damage the flashing.
Recommended procedures of basic valley flashing installation.
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.
One common method is to lay the edge metal under the eaves membrane and over the rake.
Two ways to flash roof edges.
In this video i show you how i do the valleys on a shingle roof.
Place the flashing on the upper portion or the upper flange of the batten.
Many roofers cut the shingles across because they say it s safer.
Remember to caulk the underside of the flashing with a sealant.
Install the valley battens on the sides of the roof that you want to place the valley flashing.
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.
The woven valley shingle installation method does not call for roofing cement relying instead on the weave pattern to protect from water infiltration.
Make sure to cover the gap at the bottom of the raised ridge.
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.
Protect the eave from ice dams and sideways rain step one in steep slope roofing is the edge flashing.
Install flashing on existing roof to extend the lifespan of your roof.
Finally reattach all shingles removed in the process.
