How To Install Flashing On A Roof Valley

Some roofers cut the shingles parallel to the flashing s center ridge.

How to install flashing on a roof valley.

Others start with a 3 inch wide. No one of this affirmat. Many roofers cut the shingles across because they say it s safer. Snipping off the corners of.

Trim as needed with your tin snips. When you lay the flashing down make sure it is flush with the drip edges at the bottom of the valley. At the bottom of the roof water needs to be directed. How to do it determine cuts.

Use fasteners to attach the panel to the structure making sure that there is complete compression of the sealant. Fold the top of the flashing over the ridge. You can choose from v or w shaped types of flashing. 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. Now nail this first flashing at both its far ends. Recommended procedures of basic valley flashing installation. To splice the pieces add roofing cement to the lower piece and install the upper piece with at least a six inch.

Typically flashing is installed using roofing nails and roofing cement. Remember to caulk the underside of the flashing with a sealant. Steep slope roofs slope greater than 3 12 cut the panels at an angle for the valley then bend the hem end of the panel and hook it with a cleat. Apply an approximately 3 inch.

Rain should run off the roof and into the gutter. In this video i show you how i do the valleys on a shingle roof. Install an underlayment centered in the roof valley. Place a piece of sheet metal under the shingles to make sure you will not damage the flashing.

Make sure to cover the gap at the bottom of the raised ridge. Use tape sealant between the valley trim and the panel. 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. Step flashing protects the gap where roofs meet walls by weaving into the roof shingles.