Installing Valley Flashing On Existing Roof

Install flashing on existing roof to extend the lifespan of your roof.

Installing valley flashing on existing roof.

Remember to caulk the underside of the flashing with a sealant. 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. In this video i show you how i do the valleys on a shingle roof. Recommended procedures of basic valley flashing installation.

No one of this affirmat. 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. Place the flashing on the upper portion or the upper flange of the batten. Finally reattach all shingles removed in the process.

Apply an approximately 3 inch. Install the valley battens on the sides of the roof that you want to place the valley flashing. Many roofers cut the shingles across because they say it s safer. Roof one side of the valley running the shingles across it.

Now nail this first flashing at both its far ends. Install an underlayment centered in the roof valley. Stop nailing 6 inches from the center. Shingle the other side of the valley the same way.

Snap a chalkline 2 to 3 inches past the valley center on the top layer of shingles. Lay one and two tab shingles as you near the valley so full size shingles will run across the valley. 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.