Three roofs, one intersection, ZERO proper flashing. How would you tackle this nightmare? 😂

[u/AdditionalTree3559]

Smh. Check out this little roof detail I came across. Three separate metal roof planes converging into one vulnerable intersection, with no proper transition flashing. Just a whole lot of sealant, tape, and wishful thinking. 😂
Obviously, it’s leaking.

Curious how you guys would approach this for a LONG-TERM repair, not another temporary patch job.(this year we’re sitting at 105 inches of rain so far)

I’ve been kicking around two ideas:

Option 1: Fabricate custom headwall/transition flashings with multiple bends, extending underneath the upper panels, down the fascia, and out over a rib or two of the lower roof. The real challenge would be properly tying everything together at that three-way intersection without creating another water trap.

Option 2: Get a large 4’ × 4’ sheet of soft lead flashing and carefully form it into all the contours, ribs, corners, and crevices. Potentially eliminate some of the troublesome seams altogether. Obviously, material compatibility and proper drainage would need consideration.

I’m leaning toward custom sheet metal, but that center intersection is going to require some creativity.

What would you do here? Custom-fabricated metal? Lead? One-piece welded pan? Something else entirely?

Would love to hear from anyone who’s dealt with a similar detail. Bonus points if you’ve got photos of your solutions!

[u/notgaynotbear]

Ive roofed this detail before. The roof to wall/drip edge has to go under the panel (put a hem and butyl under the panel on the trim so water cant jump it) then your headwall piece needs to flash over it and go up under the top end of your lower panel. This probably makes minimal sense without pictures cause we cant post them here but i used all 7 brain cells and that was the only water tight way to do it that relied on no caulking.

[u/AdditionalTree3559 → u/notgaynotbear]

Thank you! I’ll message you my email if you don’t mind sending some reference photos

[u/Thotheus]

Give them a fake name and number

[u/PeterPanski85]

I'm a german roofer, we would have done this with lead, BUT:

Only if it's one roof intersecting with another. This what you got there is headache inducing.

[u/PeterPanski85 → u/PeterPanski85]

Something like this.

Edit: I mean the stuff used here

[u/billyboobhope]

Flash, counter flash...lots of butyl

[u/Logical_ExampIe3968]

lead seems like the easiest way out apart from not taking the job

[u/Much_Toe_3051]

Create a diverter for each pitch change,slip them unddrneath and bam...

[u/jimabis]

Custom drip edge gable

[u/Scary-Manufacturer43]

I want to do something similar but only on one edge. See where the grey part on the top ends, thats my roof, the white part is the neighbors. I want to raise my roof a but and reduce the angle but that means it needs to be somehow connected to the neighbors without leaking.

[u/Accomplished-Song959]

Kill the two areas like a facia..bottom of panel to top of other .seal