Installing Valley Roof Flashing

Make sure to cover the gap at the bottom of the raised ridge.

Installing valley roof flashing.

Many roofers cut the shingles across because they say it s safer. 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. Cut the bottom edge and fold it down over the drip edge. 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.

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. Recommended procedures of basic valley flashing installation. Install the underlayment as directed by the manufacturer then set the valley flashing on top of it. No one of this affirmat.

Typically flashing is installed using roofing nails and roofing cement. Others start with a 3 inch wide. Place a piece of sheet metal under the shingles to make sure you will not damage the flashing. Now nail this first flashing at both its far ends.

While some skylight manufacturers include flashing in their products sometimes roofing professionals. Open valleys have metal flashing to protect this critical area of the roof. 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. How to do it determine cuts.

To splice the pieces add roofing cement to the lower piece and install the upper piece with at least a six inch. When you lay the flashing down make sure it is flush with the drip edges at the bottom of the valley. Use roof valley cleats at intervals of 24 o c. 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. The edge of the roof has thin metal flashing that helps water drip off. Step 6 install the flashing. You can choose from v or w shaped types of flashing.

Some roofers cut the shingles parallel to the flashing s center ridge. Snipping off the corners of. Trim as needed with your tin snips. Install an underlayment centered in the roof valley.

Using clips permits movement in the valley as temperatures change. Fold the top of the flashing over the ridge.