Interesting you mention the yellowing with epoxy—I've seen that a lot, especially on south-facing frames where UV just beats everything up. Did you do any kind of primer first, or just straight to the spray? I’ve found adhesion can be a real pain on older aluminum, especially if there’s any oxidation left behind. Sometimes folks skip the etching primer and that seems to make chips worse around high-touch spots like handles.
Curious if you ever tried a two-part system, like a catalyzed urethane? Bit more hassle (and definitely pricier), but I’ve had better luck with longevity, though even then, flexing at the corners and handles is hard to totally avoid. I sometimes wonder if the prep matters more than the paint itself. I’ve started sanding down to bare metal, then wiping with acetone before priming, but it’s a grind.
Also, what kind of climate are you in? I’m in the Midwest, and we get wild temperature swings, which I think doesn’t help—aluminum expands and contracts so much that even the toughest coatings eventually give up. I’d love to hear if anyone’s found a way to keep the finish looking good for more than a couple years without going full replacement.
Honestly, I’m not convinced the paint type matters as much as folks say—at least not long-term. I did a full etch primer and pro-grade topcoat on mine, and even with all that, the corners still chipped after two winters. Midwest weather just wins sometimes. I’ve seen more luck with regular touch-ups than chasing the “perfect” system.
I did a full etch primer and pro-grade topcoat on mine, and even with all that, the corners still chipped after two winters.
Right there with you. I’ve sprayed high-end systems on old aluminum frames for clients, even followed every prep step to the letter—still saw chipping at the edges after a couple years. Midwest or Northeast, doesn’t seem to matter. I tell folks now: plan for touch-ups, especially where hands and weather hit hardest. Paint helps, but it’s not magic against freeze-thaw cycles.
“plan for touch-ups, especially where hands and weather hit hardest. Paint helps, but it’s not magic against freeze-thaw cycles.”
That’s the part that gets me. I did all the sanding, degreasing, primer—thought I was doing it “right”—but those window corners still got nicked and started flaking after one rough winter. Anyone tried the vinyl wraps or cladding instead of paint? I’m starting to wonder if that’s less hassle in the long run, even if it’s more upfront work.
I hear you—same story here, honestly. I spent a whole weekend prepping my old frames, thinking if I just followed all the steps, they’d last at least a few years. Nope. By spring, the bottom corners were bubbling and peeling where the snow piled up. I haven’t tried vinyl wraps yet, but my neighbor did cladding last summer and swears by it. Looks cleaner and he hasn’t touched them since, but yeah, the upfront hassle and cost are real. Still, I’m starting to think it’s worth it if you’re tired of the annual paint routine...
- Totally get the frustration. I went all-in with sanding, priming, and the “right” paint on my 80s frames—looked awesome at first, but winter did them in.
- I tried touching up, but it’s a losing battle where the snow piles up.
- My cousin did aluminum cladding two years ago. More expensive, but he’s basically forgotten about maintenance since.
- If you’re dealing with harsh winters, paint just doesn’t seem to last, no matter how careful you are.
- Kinda torn because cladding’s not cheap, but the time saved is tempting...
I hear you on the winter battle. I did a careful paint job on my old aluminum frames—used etching primer, two coats of exterior enamel, the works. Looked great for about a year, then the bottom sills started flaking where the ice builds up. Honestly, I’m starting to think paint is just a temporary fix if you’ve got real winters. Cladding’s pricey, but not having to redo everything every spring might be worth it... unless you enjoy scraping and repainting as a hobby.
Funny timing, I just moved into a place with those old silver frames and was all set to paint them up this spring. Now I’m second-guessing if it’s worth the hassle. I keep hearing that no matter how careful you are, winter just finds a way to wreck the finish. Has anyone tried something like clear sealant over the paint, or is that just wishful thinking? I’m not wild about cladding either, but repainting every year sounds like a pain...
I totally get the hesitation. I painted my old aluminum frames a couple years back—prepped like crazy, used primer, the works. They looked great for about a year, but winter did a number on some spots. Tried a clear sealant last spring, and honestly, it helped a little but didn’t stop the chipping where moisture got in. Seems like unless you’re really meticulous with prep and keep up with touch-ups, it’s just a temporary fix. Not sure I’d do it again unless I was feeling extra patient...
- Totally see where you’re coming from.
- From what I’ve read, aluminum’s tricky because it oxidizes—if any oxidation’s left under the primer, paint won’t stick long term.
- Did you use self-etching primer? Some folks say it helps, but not a magic fix.
- Wonder if powder coating holds up better, but that’s not really a DIY thing...
- Seems like unless you’re super thorough and maybe redo it every couple years, it’s always gonna be a bit of a gamble.