How do I do this valley?

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How do I do this valley?

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The panels where the new roof is intersecting should be removed. You will want to tie in the roof framing and decking, put down underlayment, and then valley pans and then reinstall the old panels (cutting as necessary) and the new roof. You will want to get panel and valley install instructions and parts from your metal roof supplier.

Todd Miller
2024-05-08 13:17:57.684798

With standing seam, they will cleat the panel ends on top of the valley pans. With through-fastened panels such as these though, they usually use butyl tape and screws and often leave the trapezoidal ribs open.

Companies like McElroy Metals, Fabral, Metal Sales, and MBCI / Cornerstone have illustrated manuals online that show these valley details. There are also some good videos on Youtube. Search for "R Panel Valley Installation" on Youtube for those. Otherwise, go to the above manufacturer websites and search for their R Panel and then the installation instructions for it.

By removing the existing panels and then cutting them on the bias and re-installing them, really how you handle both sides of the valley will be the same. Yes, you want to have the valley end get water away from that fascia / wall though.

I am sorry that your manufacturer doesn't provide these sorts of details. That is very disheartening to hear.

My company does not manufacture R Panel or else I would send you our instructions for it.

Todd Miller
2024-05-08 13:41:31.866660

Hi I am a retired carpenter, roofer framer, putting an addition on my house, I have done tons of asphalt but only a few metal ones, all straight runs, so I am at a loss as to how to do this with metal. The gutter is just temporary to keep water away

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jim morisseau
2024-05-08 13:07:54.841602

I don't know how to do the part on the new roof, with asphalt I would run shingles under the valley flashing and then go over it but I can't just notch the new panel and put some under and some over. I was figuring I would cut out the fascia and soffit and slide panel under so would I just do that and then put the valley metal over the new panel and then start the first cut panel ? Seems like there would be gaps and bumps from the ribs. I will put plywood and rubber under but the other part looks tricky once you actually try to visualize it

jim morisseau
2024-05-08 13:30:16.931405

If I could get the info from the supplier i would not be asking this question

jim morisseau
2024-05-08 13:31:59.744902

the 2 panels will not be the same, the one on the existing roof will just end over the eave while the new one will run below it. I bought the stuff thru my lumberyard, it comes from Maine so I figured i would ask here. I can't put the new valley flashing both over and under a single panel as i could do with asphalt as the metal is not flat

jim morisseau
2024-05-08 14:00:30.593215

So I found a video that shows something similar, the guy cut the panel in 2 pieces so 1 overlaps the lower one , some comments criticized it but looks like the only way to do it, sorry for being a little grouchy

jim morisseau
2024-05-08 14:30:56.687424