Finally tackled that metal edging thing on my roof

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.

Metal seams are always a headache, especially once you factor in Midwest weather. I’ve managed a few properties where people tried to “patch and pray” with caulk or tape, and it’s just a short-term fix - usually ends up costing more when the water finds its way in again. The freeze/thaw cycles are brutal; expansion and contraction just tear those seams right back open.

Green roofs are interesting - I’ve only dealt with one, but I’ll admit, the insulation benefits were noticeable. Kept the workshop a lot more stable temperature-wise, which meant less condensation and fewer of those sneaky leaks that show up in spring. Still, the maintenance was a bit more than folks expect. We had to keep an eye on root barriers and make sure drainage layers didn’t clog up with debris. If the water can’t get out, you’re just asking for rot or even structural issues down the line.

Liquid rubber coatings... mixed feelings there. I’ve seen them work well for a season or two, but after a couple of harsh winters, they start to peel or crack. Once that happens, water gets underneath and you’re back to square one - sometimes worse, since it’s harder to spot the problem until it’s spread.

I’m curious - has anyone tried using a standing seam retrofit system over an older metal roof? I’ve heard it can be a solid long-term solution, but I haven’t pulled the trigger on it yet. Seems like it could address both seam leaks and insulation if done right, but I wonder about cost and whether it’s overkill for a smaller outbuilding. Anyone have firsthand experience with that approach? Or maybe a different system that’s held up better through the freeze/thaw cycles?

- Totally agree on caulk and tape - tried that my first winter, and it just made things worse once the snow melted.
- Midwest freeze/thaw is no joke. I’ve had seams pop open even after “fixing” them in the fall.
- Looked into standing seam retrofit for my garage. Got a quote last year - wasn’t cheap, but the installer said it’d outlast everything else. For a small outbuilding, though, felt like overkill unless you’re planning to stay long-term.
- Green roof sounds cool but I can barely keep up with mowing, so not for me.
- For now, I’m just checking seams every spring and fall...not ideal but it’s manageable.

- Tried the caulk/tape combo too - just ended up chasing leaks all spring.
- Midwest weather really does a number on metal seams.
- Looked at standing seam for my shed, but the price made me laugh. Maybe if I win the lottery...
- Green roof? My weeds would love that.
- I just keep a tube of sealant handy and cross my fingers every March. Not perfect, but it gets me by.

That constant battle with leaks every spring sounds all too familiar. I’ve tried the caulk and tape route myself - sometimes it holds, sometimes I’m back up there after the first big thaw. Midwest freeze-thaw cycles really do test every seam and fastener. I’ve wondered if it’s just the age of my roof (about 18 years now) or if the expansion and contraction just makes any sealant a temporary fix.

Standing seam was on my radar too, but the bids I got were double what I paid for my whole garage. Hard to justify unless you’re planning to stay put forever. As for green roofs, I hear you… I can barely keep up with the regular weeds, let alone intentionally growing more.

One thing I tried last year was switching to a polyurethane-based sealant instead of silicone. It seemed to hold up a bit better through the winter, but I’m not convinced it’s a long-term solution. Has anyone had luck with those peel-and-stick flashing membranes? I keep seeing them at the hardware store but haven’t pulled the trigger yet.

- Peel-and-stick flashing membranes can help, but they're not a magic bullet.
- They work best as a backup layer under new metal or shingles, not so much as a patch on top of old leaks.
- Midwest freeze-thaw is brutal - most sealants will eventually give out, especially on an 18-year-old roof.
- Polyurethane does hold up better than silicone, but if the metal's shifting, nothing topical lasts forever.
- If you do try the membrane, make sure the surface is bone dry and clean - any dust or moisture and it'll peel right off by spring.
- Honestly, sometimes it's just time for new panels or at least a serious re-fastening job. Temporary fixes only go so far with old metal.

You’re spot on about those membranes - they’re a decent stopgap, but on anything pushing 20 years, it’s just buying time. I’ve seen folks get another season or two with careful prep, but Midwest winters are relentless. Sometimes you just gotta bite the bullet and do a bigger fix. Still, props for tackling it yourself. That’s not an easy job up there.

Membranes are like duct tape for roofs - good in a pinch, but you’re right, they’re not magic. Once you hit that 20-year mark, especially around here with the freeze-thaw circus every winter, it’s just delaying the inevitable. I’ve seen people stretch things out with some creative patchwork, but at some point, you’re just chasing leaks. Kudos for getting up there yourself though... most folks won’t even touch a ladder once the snow flies. Just watch out for those surprise ice dams - they’re sneaky little troublemakers.

- Hit that 20-year mark myself last fall - patches everywhere, but it’s just slowing things down at this point.
- Metal edging helped me for a couple winters, but those ice dams still found a way in. Had to chip away at them more than once.
- I get the urge to stretch things out, but after chasing leaks through two spring thaws, I finally bit the bullet and replaced a section.
- Props for getting up there in winter. I slipped off my ladder once - never again when there’s snow on the roof.
- Sometimes I wonder if all the patching is worth it, or if it’s just better to plan for a full redo before things get ugly.

Hitting that 20-year mark really does seem to be the tipping point. I’ve seen so many folks try to squeeze a few more seasons out with patches and sealant, but after a while, it’s just chasing your tail. Metal edging can help a bit with ice dams, but if your insulation or ventilation isn’t up to par, those dams just keep coming back. I’m with you on the winter ladder thing - one slip was enough for me, too. Sometimes it’s just safer (and cheaper in the long run) to plan for a full replacement before things get out of hand.

Metal edging can help a bit with ice dams, but if your insulation or ventilation isn’t up to par, those dams just keep coming back.

That’s the part a lot of folks miss - metal edging is only a band-aid if the attic’s not sorted out. I had a similar situation after 18 years with my old asphalt roof. Tried patching, sealing, even added heat cables... but the ice dams kept winning until I beefed up the insulation and added a ridge vent. Curious - did you look into any green roofing options when you were planning the replacement? Sometimes the up-front cost is higher, but I’ve found it pays off in energy savings and fewer headaches down the line.

Yeah, I’m with you - metal edging looks sharp and might help a little, but if the attic’s a mess, it’s just kicking the can down the road. I learned that the hard way after a couple winters where I thought heat cables would be my magic fix. Spoiler: they weren’t. Ended up crawling around in the attic with a flashlight, finding all sorts of gaps where warm air was sneaking out. Once I sealed those up and added more insulation, the ice dams basically stopped.

About green roofing, I did poke around a bit. Looked at cool roof shingles and even considered a metal roof with solar panels, but honestly, the upfront cost was tough to swallow. Maybe if I’d planned further ahead or if energy bills were higher here, it’d make more sense. For now, just making sure the basics - ventilation and insulation - are solid seems to be the best bang for my buck. If I ever have to do a full tear-off again, I might revisit the eco options, but for now, just glad to not be chipping away at ice every January.

I get where you’re coming from - everyone loves the idea of a slick metal edge or heat cables, but honestly, if the attic’s leaking heat, you’re just treating symptoms. I’ve seen people dump money into “quick fixes” and still end up with ice dams every winter. Curious, though - did you notice any difference in your summer cooling bills after you beefed up the insulation? I’ve heard it can make a bigger impact than people expect, but I’m not totally sold.

if the attic’s leaking heat, you’re just treating symptoms

- Not totally convinced it’s just “treating symptoms.” Metal edging actually helped on my uncle’s place - less snow melt right at the edge, so fewer dams even before he touched insulation.
- Insulation’s great, but in older houses with weird rooflines, sometimes you just can’t get enough up there. Metal edge or cables can be a solid backup.
- As for cooling bills, yeah, insulation helps, but if your roof’s dark or gets hammered by sun all day, it only does so much. My neighbor beefed up his attic insulation and still cranks the AC all summer. Just my two cents.

I get where you’re coming from. I’ve seen metal edging make a real difference too, especially on my old place with a low-pitch roof. Sometimes you just can’t cram more insulation in those tight attic corners, and the metal edge helps keep the ice dams down. Have you noticed any change in how your gutters handle runoff now? I always wonder if it shifts the problem somewhere else or if it’s just a net win.

Yeah, I’ve seen that too - metal edging can be a game changer for ice dams, especially on those low-slope roofs where snow just loves to hang out. I’ve put it on a few places and honestly, it’s usually a net win. The runoff does move a bit faster, so if your gutters are already struggling, you might notice them working overtime during a big melt. Had one customer who swore the metal edge made his gutters “sound like a waterfall” in spring, but at least he wasn’t dealing with water sneaking under the shingles anymore.

If your gutters are clear and pitched right, it shouldn’t cause any real problems. But if they’re already half full of maple helicopters or whatever, you’ll probably want to keep an eye on them. I’d take a little extra water noise over a leaky ceiling any day, though. Just my two cents.