LOOKING FOR GOOD PLACES TO BUY METAL ROOFING SHEETS

That’s a good point about the wind-driven rain. I’ve only done a couple installs so far, but even on the “perfect” ones, I noticed a little rust sneaking in at the seams after a wet spring. Anyone else ever try using butyl tape instead of just sealant? Wondering if it’s worth the extra step...

Anyone else ever try using butyl tape instead of just sealant? Wondering if it’s worth the extra step...

I’ve wondered about that too. Does butyl tape actually hold up better long-term, or does it just make a mess if you ever have to pull things apart? I’ve only used regular sealant so far, but I’m not thrilled with the rust creeping in either. Maybe it’s just our crazy spring weather, but I’d love to know if butyl tape is really worth the hassle.

- Butyl tape’s a solid option for metal roofs, especially where panels overlap.
- It stays flexible and seals better than most caulks in my experience.
- Downside: it can get messy if you ever need to remove panels - sticky residue everywhere.
- Have you noticed if your rust is starting at fasteners or seams? Sometimes the tape helps there, but only if the panels are prepped right...

Downside: it can get messy if you ever need to remove panels - sticky residue everywhere.

Yeah, that sticky mess is no joke. I tried pulling up a couple panels when we had a leak last fall and the butyl tape was everywhere - took forever to clean up. Still, I’d rather deal with that than water getting in. For me, rust started at the fasteners, probably because I didn’t prep the surface as well as I should have. Rookie mistake. If you go this route, maybe take extra time cleaning and priming the seams and fastener spots... learned that one the hard way.

For me, rust started at the fasteners, probably because I didn’t prep the surface as well as I should have. Rookie mistake.

- Totally get that. I’ve seen a few jobs where skipping the primer or just rushing the prep led to rust way faster than expected.
- Butyl tape is a pain, but yeah, water getting in is worse. I’d rather spend an hour scraping goo than dealing with mold or rotten decking.
- I’m curious - when you pulled your panels, did you have to replace any of the insulation underneath? Sometimes the leak soaks right through and you don’t notice until it’s nasty.
- For buying sheets, I’ve had mixed luck with the big box stores. Local supply yards usually have better quality and you can actually see what you’re getting. Price isn’t always lower though.
- Anyone ever try those pre-coated fasteners? Wondering if they actually help with rust or if it’s just marketing.

Just thinking out loud... prepping takes time but seems like it saves a lot of headaches down the road.

Pre-coated fasteners are hit or miss in my experience. Some brands hold up, but I’ve still seen rust creep in around the heads after a few years, especially if the coating gets scratched during install. I always recommend running a bead of sealant over the fastener heads as a backup - takes a bit longer but it’s cheap insurance. When you’re checking out supply yards, do you notice much difference in how they store their sheets? I’ve seen some places leave them out in the weather, which can start the rust process before you even get them home...

I’ve noticed the same thing with storage - some yards just stack the sheets outside, uncovered, and it drives me nuts. Even if they’re “pre-coated,” once moisture gets in between those sheets, you’re already starting off behind. I always try to buy from places that keep their stock indoors or at least under a roof. It’s worth asking how long the sheets have been sitting there, too. Sometimes you can spot early rust or scratches if you look close. I’d rather pay a bit more for material that hasn’t been weathered before install.

That’s actually something I noticed when I was shopping around - some of the bigger suppliers near me had stacks just sitting out, even in the rain. It made me second-guess if I should go with them, honestly. The last thing I want is to shell out for new roofing and then deal with rust spots or weird stains popping up later. I ended up driving a bit farther to a place that keeps everything under a covered area. Might’ve paid a little more, but at least I know what I’m getting hasn’t been soaked or scratched up. Kind of wild how some places just don’t care about storage at all...

Kind of wild how some places just don’t care about storage at all...

That’s what I keep wondering - does it actually make a big difference if the sheets get rained on before installation? Like, is it just cosmetic or could it mess with the lifespan? I’m new to all this and honestly didn’t even think about storage until I saw a pile of panels with muddy footprints at one place. Is there any way to tell if they’ve been sitting out too long, or is it just a gamble?

I’ve seen panels left out in the rain for weeks, and yeah, it can be more than just cosmetic. If water gets trapped between stacked sheets, you can get “wet storage stain” - kind of a chalky white mess that doesn’t always come off. Sometimes it’s just ugly, but if it’s bad enough, it’ll eat into the coating and shorten the life. I usually check for any white or rusty spots along the edges or where sheets touch. If they look clean and dry, you’re probably fine, but muddy footprints are a red flag for me... means they’re not handling them with much care.

Yeah, those muddy footprints are a dead giveaway that someone’s not treating the panels like they should. I’ve had a batch delivered once where it looked like they’d been used as a shortcut through a construction site - mud, scuffs, the works. Ended up sending half of them back. Your tip about checking the edges is spot on. I always do a quick “flip and inspect” before signing off on delivery. It’s a pain, but way better than dealing with rust or stains down the line. Hang in there - finding a supplier who actually cares is half the battle.

Yeah, that “shortcut through a construction site” look is way too common. I’ve had to reject panels for the same reason - mud, scratches, even one with a boot print right across the face. It’s wild how some places just don’t care how they handle them once you’ve paid. I’m with you on the edge check too. I started bringing a rag and a flashlight for deliveries after getting burned by hidden dings and rust spots.

Honestly, I’ve had better luck with smaller local suppliers over the big chains. They seem to care more about repeat business and are less likely to deliver stuff that looks like it’s been dragged behind a truck. Not always cheaper, but fewer headaches in the long run. One time I did a bulk order from a big box store and ended up spending half a day sorting out returns - never again if I can help it.

If you’re after green or recycled options, those can be trickier to find, but there are some regional outfits popping up now. Just gotta dig around and ask lots of questions before you commit.

- 100% agree on the local supplier thing - less hassle, better condition panels, and they usually know how to handle materials.
- I always check for oil canning and edge damage before signing off. Learned that the hard way after a batch from a chain had bent corners under the strapping...
- For recycled/green options, it’s hit or miss here. Sometimes you get lucky with a regional distributor, but quality control can be all over the place.
- One tip: ask to see how they store panels. If they’re stacked outside uncovered, that’s a red flag for rust and warping down the line.
- Pricing’s not always lowest at the locals, but factoring in wasted time and returns, it evens out - or better.

Yep, storage is a big one. Seen too many places just leave panels out in the rain or snow - then you’re fighting rust before you even get started. I’m with you on the local supplier thing, though I’ll admit I’ve had a couple of locals try to pass off scratched or “seconds” as first quality. You really do have to check every bundle before you sign off, no matter where it’s coming from.

Recycled stuff is tricky. I want to like it, but half the time it’s either inconsistent in color or the finish doesn’t hold up. Maybe that’ll change as more places get their act together.

Price-wise, yeah, sometimes the big chains look cheaper on paper, but between damaged product and wasted trips for returns, it doesn’t actually save anything - plus your crew’s standing around waiting for new panels. I’d rather pay a bit more up front for less headache later.

Bottom line: trust but verify, and don’t be shy about walking away if something looks off.

You nailed it - cutting corners on quality or storage just isn’t worth it. I’ve seen “discount” panels cost double in labor and frustration. Recycled can be hit or miss, but I keep hoping the industry steps up. Paying a bit more for solid stuff saves headaches every single time.

Paying a bit more for solid stuff saves headaches every single time.

Couldn’t agree more. I’ve seen “bargain” panels warp or rust out in just a few years, especially in areas with big temperature swings. It’s tempting to go cheap, but the callbacks and repairs eat up any savings fast. I do wish recycled options were more consistent - sometimes you get lucky, sometimes it’s a mess. For long-term value, sticking with reputable suppliers has always paid off for me.

I hear you on the recycled panels - my neighbor tried some and half of them didn’t even line up right. I’m all for saving money, but it’s not worth it if you’re patching leaks after two winters. Has anyone found a supplier that balances price and quality? I keep seeing big price swings between local yards and the chains. Not sure if it’s just brand markup or if there’s a real difference in durability.

I’ve been down this road - tried saving a few bucks with off-brand panels from a local yard, and let’s just say the “deal” cost me a Saturday fixing seams after the first big rain. In my experience, the big chains charge more, but their panels are usually thicker gauge and the coatings hold up better. Sometimes you get what you pay for, but I still check both places every time... just in case there’s a sale or overstock. The markup is real, but so is the difference in quality, at least where I am.

You nailed it - sometimes chasing a “deal” just means you’re buying yourself a weekend of crawling around with a caulk gun. I’ve seen more than a few roofs where someone went bargain hunting and ended up with panels so thin you could read the newspaper through ’em. Not saying every local yard is a gamble, but yeah, those big chains tend to stock stuff that’s at least consistent.

Here’s my two cents: if you’re going local, bring a magnet and check the gauge yourself (thicker is better). Look at the coating - if it scratches easy, it’s probably trouble down the line. And always ask about warranty, even if you think you won’t need it. Sometimes those “cheaper” panels end up costing more in patch jobs and frustration. But hey, I get the hunt for a deal... I still peek at the clearance rack every time I’m in the store. You never know when lightning will strike and you’ll find good stuff cheap. Just gotta be ready to walk away if it looks sketchy.

Been there - thought I scored a deal once on some off-brand panels from a small yard. Looked fine at first, but after the first hailstorm, they were peppered with dents and the paint started flaking. Ended up replacing half of them within two years. Now I’ll pay a bit more for thicker gauge and a solid warranty. It stings up front, but way less hassle when storms roll through. I still check out the bargain piles, but I’m way pickier about what actually comes home.