This shot does a great job of showing process and finish in the same photo. Every region has unique styles but they all follow the rules of trad roofing: full joinery. I’m a big fan of the transverse seams on the valley intersection.
Why is this superior?
- There is no lap, anywhere. The entire functioning surface is fully in view. Just like a membrane.
- If any individual piece is damaged: in can be removed and replaced without disrupting the remaining assembly.
- All intersections are fully seamed, twice over.
Trad Building 