Finally tackled that metal edging thing on my roof

"Honestly though, reshaping flashing sounds pretty intimidating... did you find it tricky to get it back into shape without damaging it further?"

Yeah, flashing can be finicky. I've found that gently heating it up a bit first (carefully, of course) makes reshaping easier and reduces the risk of cracking or weakening the metal. Also, using wooden blocks or rubber mallets instead of metal tools helps avoid accidental dents or scratches. Definitely agree replacements aren't cheap these days - better to take your time and get it right the first go-around.

"Yeah, flashing can be finicky. I've found that gently heating it up a bit first (carefully, of course) makes reshaping easier..."

Interesting approach! Never really thought about gently heating it up first - honestly, my method usually involves a lot more frustration and colorful language, lol. Does warming it up actually help prevent it from cracking, or is it more about making the metal easier to bend back smoothly?

I usually just go slow and steady, lots of little taps with a rubber mallet, and plenty of patience (and coffee breaks). Learned my lesson the hard way once trying to rush it with a metal hammer - ended up looking like I'd taken a cheese grater to it. Not exactly my proudest roofing moment...

Anyway, next time I'll give your heat trick a shot. Got any tips on how much heat is too much? Wouldn't wanna accidentally melt anything important up there...

Warming it up can definitely help, but it's more about making the metal easier to shape rather than preventing cracks. Metal flashing, especially aluminum or thin steel, gets more pliable when gently heated. Just be cautious - too much heat can discolor or even warp it permanently. A good rule of thumb is if you can't comfortably touch it, you've probably heated it too much.

I've seen my fair share of "cheese grater" outcomes too, haha. Rubber mallet is usually my go-to as well - metal hammers are just asking for trouble unless you've got a really steady hand. Also, keep an eye on the seams and corners; they're usually the weakest spots and can split pretty easily if you're not careful.

One quick tip: if you're using a heat gun, keep it moving constantly, about 4-6 inches away from the surface. You'll get a nice even heat without accidentally melting or scorching anything important underneath (like roofing membranes or sealants). Good luck - hope your next flashing adventure involves fewer coffee breaks and colorful language...though that's half the fun, right?

Wish I'd read this thread before my first attempt last summer. I went straight in with a metal hammer thinking "how hard can it be?"... famous last words. Ended up with dents everywhere and a seam that split wide open. Took twice as long to fix the mess than it would've to do it right the first time. Rubber mallet and gentle heat next time for sure - lesson learned the hard way, as usual.

Been there myself - metal hammer seemed logical at first, right? Learned pretty quick that metal edging needs finesse, not force. Rubber mallet and a bit of heat make all the difference. Good on you for sticking with it and sorting out the mess. Roofing's one of those things where mistakes teach you more than getting it right first try... at least that's what I tell myself after every project gone sideways.

"Roofing's one of those things where mistakes teach you more than getting it right first try..."

Couldn't agree more. Learned the hard way myself - metal edging isn't forgiving. A heat gun and patience saved me from redoing the whole thing. Glad you got it sorted without too much hassle.

"metal edging isn't forgiving. A heat gun and patience saved me from redoing the whole thing."

Wish I'd thought of that trick when I tackled mine a few years back. Ended up bending the edging pretty badly on my first go - figured brute force would sort it out (spoiler: it didn't). Got me wondering though, anyone ever try using a rubber mallet to straighten minor bends? Seems like it might work, but I haven't dared risk round two yet...

The rubber mallet can work, but honestly... it's hit or miss. I tried it once after a similar brute-force disaster, and while it improved things slightly, it never got the edging back to 100%. The heat gun trick is definitely smarter - wish I'd known that earlier myself. Still, good on you for giving it a go. Metal edging's no joke; takes guts to tackle it solo.

"The heat gun trick is definitely smarter - wish I'd known that earlier myself."

Yeah, the heat gun method sounds neat, but honestly, I'm not totally sold on it. I tried it once, and while it did soften things up nicely, it also warped the edging a bit in spots. Maybe I just didn't have the patience or finesse, but I'd say it's not foolproof either. For me, carefully using a wooden block with the mallet seemed to work better - just gotta be super gentle and patient.

Interesting points about the heat gun - I had similar issues myself. It softened things up nicely, sure, but I ended up with a couple of uneven spots that bugged me. Maybe it's just technique or heat level, but I went back to a rubber mallet and wood block as well. If you go slow and steady, tapping gently along the length, it usually comes out pretty clean. Plus, no worries about accidentally overheating anything...

Interesting you mention uneven spots - had the same thing happen when I first tried the heat gun. Did you notice if holding it at a certain angle made any difference? For me, it seemed like even the slightest tilt could cause one side to soften quicker than the other. But yeah, after some frustration, I ended up grabbing the mallet too. There's definitely something reassuring about tapping gently and seeing things straighten out bit by bit. Plus, less chance of accidentally warping or discoloring anything with too much heat.

Did you find it easier to control your results with the mallet method overall? Sounds like you got good results going slow and steady. Either way, nice job getting it done - metal edging can be tricky stuff to get right.

Yeah, the mallet definitely felt more forgiving to me too. I noticed with the heat gun, even a tiny pause or hesitation could mess things up. Did you find the type of metal made a difference? Aluminum seemed way fussier than steel for me...

Funny you mention aluminum being fussier - I actually found steel to be a bigger headache. Aluminum felt like it bent if I just looked at it wrong, sure, but once I got the hang of the heat gun timing, it was pretty smooth sailing. Steel, on the other hand... man, that stuff was stubborn. Felt like I was negotiating with it rather than working on it. Maybe my heat gun just wasn't powerful enough or something, but I swear steel edging had a personal vendetta against me.

I ended up ditching the heat gun altogether halfway through and just stuck with the mallet. Yeah, it took a bit more elbow grease, but at least I didn't have to worry about blinking at the wrong moment and ruining everything. Plus, there's something oddly satisfying about hammering things into submission - good stress relief after dealing with picky homeowners all day, haha.

Steel edging can definitely be a pain, but honestly, aluminum drove me nuts at first. Took me forever to dial in the heat gun without warping it. Once I figured out the sweet spot though, it was pretty forgiving. Steel just demands patience...and a bigger mallet.

- Aluminum edging was definitely finicky at first, but once you get a feel for the heat gun, it's pretty smooth sailing.
- Steel, though... totally agree on needing patience. I spent an entire afternoon wrestling with it before figuring out my issue was actually the mallet size - upgraded to a heavier one and suddenly things clicked.
- Quick tip: if you're budget-conscious like me, check local hardware stores for discounted or slightly dinged mallets. No need to splurge on something fancy just to smack metal around.
- Also found that lightly scoring steel edging before bending helped a ton in getting cleaner lines without warping or frustration.
- Still prefer aluminum overall though... lighter weight and less rust worries. But hey, whatever keeps the rain out, right?

Good call on scoring the steel first - wish I'd known that trick a couple years ago when I redid my shed roof. Would've saved me some colorful language and a few bent-up pieces, haha. Aluminum definitely has its perks, especially if you're working solo or dealing with awkward angles. But honestly, I've seen steel hold up better over time in harsher climates, even with the rust risk. Just gotta make sure you prime and seal it properly.

Also, totally agree on not splurging for fancy mallets. I picked up a slightly dinged rubber mallet from a clearance bin years ago, and it's still going strong. One thing I'd add: if you're using aluminum edging, be careful not to overheat it with the heat gun - seen folks warp it pretty badly by accident. Slow and steady usually does the trick. Anyway, sounds like you've got it figured out now... congrats on getting that done!

Yeah, aluminum edging can be tricky. Learned that the hard way when I warped a whole section trying to rush with the heat gun - ended up looking like a roller coaster track. Slow and steady definitely wins there. Glad yours turned out better than mine did...

"ended up looking like a roller coaster track"

Haha, been there myself. I tried aluminum edging last summer and thought I'd save time by skipping clamps - big mistake. The whole strip shifted halfway through, and I had to redo the entire section. Lesson learned: shortcuts usually aren't worth it. Glad you got yours sorted without too much hassle though...

Did something similar a few years back - figured I'd eyeball it instead of measuring properly. Ended up wasting half a day fixing the mess. Sometimes shortcuts just double your workload... Glad yours turned out okay though.

"Did something similar a few years back - figured I'd eyeball it instead of measuring properly. Ended up wasting half a day fixing the mess. Sometimes shortcuts just double your workload..."

Haha, I've seen this scenario play out more times than I can count. Metal edging is one of those deceptively simple-looking jobs - people think, "It's just a straight line, how hard could it be?" But roofs are rarely as straight or level as they seem from the ground. Even seasoned pros get caught out sometimes.

I've had clients who've insisted they could handle their own flashing or edging, only to sheepishly call me later when things didn't line up. I remember one homeowner who spent an entire weekend trying to DIY his drip edge. He eyeballed everything, thinking he was saving time. By Monday morning, he was calling me in desperation - water pooling, edges misaligned, and he'd run out of materials twice already. Felt bad for the guy, but it was hard not to chuckle a bit.

Still, I'm glad your project turned out alright. Sometimes luck favors the brave (or the reckless, haha). But seriously, measuring twice and cutting once isn't just an old saying - it's solid advice. Even if you don't go full-on laser-level precision, at least grab a tape measure and jot down some numbers before you start cutting metal. Saves headaches, wasted materials, and a lot of frustration.

Anyway, congrats on getting it done without any major hiccups. Sounds like you dodged a bullet this time!