Standing-Seam Roof Installation Detail
I would like to ask a question regarding a detail in the installation of a standing seam roof.
My house roof is a single slope, 1:12 pitch. My roofer installed the metal, which is made up of single fold, standing seam 24 ga panels. These are not seamed with a mechanical seamer yet
At the top edge, he folded the panels over the fascia and then over the previous sheet. He packed some butyl tape in the openings that were left after these folds (please see photo). I have not seen many standing seam roofs, but the ones I have usually have a trim piece covering the top edge of the ribs. I imagine this prevents water entry once the butyl tape degrades due to UV radiation. The roofer said this is not necessary. Can someone please advise me as to what is the correct installation detail here? Thank you.
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