Installing Valley Roof Flashing

The installer fabricates simple clips or valley flashing cleats whose bent edge interlocks with the folded over or hemmed edges of the metal roof valley flashing to secure the valley to the roof deck.

Installing valley roof flashing. Apply an approximately 3 inch. To splice the pieces add roofing cement to the lower piece and install the upper piece with at least a six inch. Drip edge metal valley flashing dormer chimney and kickout flashing are types of roof flashing that shed water away from the connections between roofs walls chimneys and other building assemblies. Use roof valley cleats at intervals of 24 o c.

Snipping off the corners of. The edge of the roof has thin metal flashing that helps water drip off. Make sure to cover the gap at the bottom of the raised ridge. Many roofers cut the shingles across because they say it s safer.

Step 6 install the flashing. Fold the top of the flashing over the ridge. Using clips permits movement in the valley as temperatures change. Recommended procedures of basic valley flashing installation.

Some roofers cut the shingles parallel to the flashing s center ridge. Flashing is generally installed at any joints or edges in the roof where water could otherwise work its way in. You can choose from v or w shaped types of flashing. In order to properly install new flashing you ll have to remove the shingles surrounding your old flashing and then re lay them after installation.

Open valleys have metal flashing to protect this critical area of the roof. When you lay the flashing down make sure it is flush with the drip edges at the bottom of the valley. No one of this affirmat. Others start with a 3 inch wide.

Cut the bottom edge and fold it down over the drip edge. Install the underlayment as directed by the manufacturer then set the valley flashing on top of it. How to do it determine cuts. 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.

Now nail this first flashing at both its far ends. In this video i show you how i do the valleys on a shingle roof. Trim as needed with your tin snips. While some skylight manufacturers include flashing in their products sometimes roofing professionals.

Typically flashing is installed using roofing nails and roofing cement. 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.