For me, old-school caulk plus some mesh tape held up better in the long run.
That’s interesting—did you use silicone or polyurethane caulk? I’ve seen mesh tape work wonders, but sometimes it’s all about how much movement that joint gets. Metal expands and contracts a ton, especially with wild temp swings. Ever try a butyl-based sealant? Those seem to flex a bit more, but I’ve still seen them fail if water gets trapped underneath.
- Tried the mesh tape with regular silicone caulk last year—cheap and easy, but I’m not convinced it’s a long-term fix for my spot.
- The metal edge on my shed roof flexes a lot in winter (I’m in Michigan), and the caulk cracked after a season.
- Thought about butyl, but isn’t it pricier? I always wonder if the extra cost is worth it for a little shed.
- Anyone else notice that even the best sealant fails if there’s ice damming? That’s what finally forced me to redo mine…
- Wish there was a budget-friendly way to seal it once and forget it, but I guess that’s not how these things go.
- Totally get the frustration with caulk cracking. I tried the same thing on my garage roof edge (also in the Midwest) and it barely made it through one winter. The flexing from freeze/thaw just eats up anything that isn’t super elastic.
- Butyl tape—yeah, it’s more expensive up front. I hesitated for ages because it felt silly to spend that much on a shed, but after redoing the same seam three times, I finally caved. Honestly, it’s held up better than anything else so far. Still, I’m not convinced it’s a “forever” fix either, especially with how much snow we get.
- Ice damming is brutal. Doesn’t matter what you use—if water’s sitting there and freezing/thawing, something’s gonna give eventually. I’ve started raking snow off the roof when I remember, but that’s not exactly a perfect system.
- For budget stuff, I’ve wondered about those peel-and-stick flashing rolls? They’re not cheap either, but maybe less than butyl if you catch them on sale. Haven’t tried them myself though.
- Wish there was a magic product for this kind of thing... Seems like everything is either cheap and temporary or pricey and only slightly less temporary.
- One thing that helped me a bit: making sure the metal edge was screwed down tight everywhere before sealing. If there’s any wiggle room at all, seems like even the best sealant can’t keep up.
- Curious if anyone’s had luck with just painting over seams with that liquid rubber stuff? Saw it at Menards last week and almost grabbed some, but wasn’t sure if it’d hold up to Michigan winters.
Anyway, always feels like these little projects end up being way more complicated than they should be.
I get the temptation to keep throwing sealants and tapes at these seams, but honestly, I’m starting to think we’re all just fighting symptoms instead of the root problem. I’ve got a low-slope metal roof on my workshop, and after three winters of chasing leaks with every “miracle” caulk and tape out there, I finally gave up and tried adding a layer of rigid insulation on top, then a living roof mat (just sedum, nothing fancy). Not saying it’s for everyone—definitely more upfront work—but the snow doesn’t melt and refreeze in the same way now. Less ice damming, less expansion/contraction at the seams.
I know it sounds like overkill for a shed or garage, but honestly, the constant patching was driving me nuts. The green roof thing isn’t perfect (you gotta watch drainage), but it’s been way less maintenance than I expected. Not sure how it’d do on a steep pitch or with heavy foot traffic though.
Liquid rubber... tried it once. Looked promising for about six months, then started peeling where water pooled. Maybe better as a short-term fix than a long-term solution in Midwest winters.
- Seen a lot of folks try to “Band-Aid” metal seams with caulk and tape—never lasts long, especially with freeze/thaw cycles.
- Green roof’s a bold move for a workshop, but honestly, you’re right: insulation + less temp swing = fewer leaks.
- Drainage is the big one people forget. I’ve seen more rot from trapped water than from actual leaks.
- Liquid rubber... yeah, looks good on day one, but Midwest winters chew it up fast.
- For anyone else reading—sometimes the “overkill” fix is actually just the right amount of kill.