Quick fix or redo: dealing with damaged aluminum flashing

I’ve tried both pre-bent and bending my own, and honestly, the stuff I bend myself just seems to fit better around weird corners. Pre-bent always feels a bit too stiff or the angles are just off. Once it’s creased, though, forget about it - never seals right for me either. Had to redo a section last fall after thinking I could “massage” a kink out... lesson learned.

Yeah, once aluminum flashing gets a hard crease or kink, it’s basically toast for sealing. I’ve tried to flatten them out too, but you just end up chasing leaks later. I get why folks like pre-bent for speed, but on storm jobs with odd rooflines, custom-bending on site just works better. Sometimes I’ll use a rubber mallet to finesse a bend, but if it’s creased, I just cut a new piece. Not worth risking water getting in - especially after a bad windstorm.

I’ve tried flattening out creased flashing with a block of wood and a hammer - looked okay at first, but the next rain told a different story. Anyone ever tried using that butyl tape as a backup, or is that just asking for trouble down the line?

Butyl tape’s great for a quick patch, but I wouldn’t trust it as a long-term fix, especially if you’re dealing with repeated water exposure. Once that flashing’s creased, it’s already lost some integrity. Ever tried replacing just the damaged section? It’s a pain, but I’ve found it holds up way better than relying on tape or sealants. Curious if anyone’s had luck with those liquid flashing products - they seem promising, but I’m skeptical about their durability over a few seasons.

- You’re right about butyl tape - works in a pinch, but I’ve seen it peel or let go after a couple seasons, especially on south-facing slopes.
- Replacing just the damaged section is a pain, but honestly, it’s usually worth the hassle. The patch blends better and you’re not relying on something temporary.
- Tried a couple liquid flashing products last year. They went on easy, but I’m not convinced they’ll outlast good metal and proper install. One area started to crack after a cold snap.
- If you’re seeing repeated water, I’d lean toward the redo, even if it’s just a small piece. Shortcuts always seem to come back around...