Lip flashing

Another really tough situation is where the front lip of the Decra-tiles fold down into the valley flashing ("valley gutter?"). The scallops make straight-line folding near impossible because once it's flattened, it flares out. It's basically corrugated sheet metal. The only way to create a straight fold is to splice it up each scallop mini-ridge, exposing gaps at the folded corner. I have several pieces like that. One of them even tapers to a point at the fold!

So to seal against penetration at the gaps I've installed bent flashing under the lip. It gets hidden (almost), so this photo is proof that I've installed it.

I'll probably go back and dap roofing cement at the gaps for good measure.