- Open (photo example to the right)
- Closed (photo example below)
No matter if you decide to go with an open valley or a closed valley, valley metal should be used and should be made of 24" stock of copper, aluminum, or a minimum of 28-gauge clad steel. Also, be sure to include ice and water shield as an underlayment in all valleys - it is a requirement we have for our 50 year roof warranty.
Also, it's important to note that if you are installing DaVinci Slate alternative in a color blend, you want to be sure to use different colors and different widths of shingles for the first shingles in the valleys for valley cuts.
Please feel free to consult our DaVinci Slate installation guide, should you have any questions about how to install valleys or how to deal with other roof projections.