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history_gandalf
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[#4084]

are aluminum windows always this bad with humidity?

I've had these aluminum windows installed for a couple months now, and they're driving me nuts. Whenever it's rainy or humid out, they start sweating like crazy... water dripping down the frames, pooling on the sills. It's honestly getting ridiculous. I'm wiping them down every morning like it's my new hobby, you know? Just wondering if this is normal or if I got stuck with some cheap junk. Anyone else dealing with this issue?


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37 replies

luckyeditor

Sounds like classic condensation issues to me. Aluminum's a great conductor, so when you get warm, humid air hitting the cooler metal frame, bam... instant waterworks. Do your windows have thermal breaks? They're basically insulating strips inside the frame that help cut down on temperature transfer. If yours don't, that could explain why it's so bad. Also, how's your indoor humidity level? I had similar issues until I got a dehumidifier running regularly - made a surprising difference. Might be worth checking into that route before you toss 'em out entirely.


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echowolf675

Yeah, thermal breaks definitely help, but honestly, aluminum windows can still be tricky in humid climates. I've seen plenty of cases where even decent thermal breaks didn't fully solve the condensation issue. Like you mentioned, indoor humidity is key - keeping it below 50% usually helps a ton. Also, check your ventilation setup; sometimes just improving airflow around the windows can make a noticeable difference. Had a client once who rearranged furniture to let air circulate better, and it actually helped quite a bit... go figure.


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sgamer48

Yeah, I've had aluminum windows in two different houses, and honestly, humidity was always an uphill battle. Thermal breaks helped somewhat, but never totally fixed it. Weirdly enough, adding heavier curtains seemed to trap moisture even more... ended up switching to lighter ones and noticed some improvement.


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history_gandalf
history_gandalf Topic starter

- Had this exact issue at my old place - aluminum windows + humidity = daily window wiping routine.
- Tried thermal films, slight improvement but still had puddles forming.
- Agree about heavy curtains making it worse...felt like a mini rainforest behind them.
- Ended up just accepting it as my morning cardio until we moved and got vinyl frames. Life changer, honestly.


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aaroncampbell351

"Tried thermal films, slight improvement but still had puddles forming."

Yeah, thermal films can be hit or miss. Had aluminum windows in my first apartment and went through the same daily wipe-down routine. Here's what I found helped a bit more:

1. Check your indoor humidity levels - if they're consistently above 50%, you're fighting an uphill battle. A decent dehumidifier can make a noticeable difference.
2. Make sure your exhaust fans in the kitchen and bathroom are actually venting outside, not just recirculating air around the room (you'd be surprised how often that's overlooked).
3. If you haven't already, try weatherstripping around the frames to reduce drafts and temperature differences.

Honestly though, aluminum frames are notorious for condensation issues because they conduct heat so easily. Vinyl or fiberglass frames are definitely better long-term solutions if you're able to upgrade eventually. Until then...yeah, morning cardio it is.


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Thermal films are honestly just a band-aid fix in my experience. Aluminum windows aren't always the villain here - I've seen plenty of homes with aluminum frames and minimal condensation. Usually, it's more about poor installation or lack of thermal breaks in older frames. Before shelling out for vinyl or fiberglass, I'd double-check if your aluminum frames have thermal breaks. If they don't, yeah...you're probably stuck wiping windows till you upgrade. But if they do, tweaking humidity and ventilation might actually solve most of your issues.


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timp36

Had a similar issue at my old place - aluminum windows with thermal breaks, but still had condensation. Turned out the bathroom fan wasn't venting properly...ever checked your ventilation setup? Might be worth a quick look before investing in new windows.


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- Aluminum windows aren't always the culprit - seen plenty of cases where humidity issues were more about indoor airflow.
- Have you checked if your kitchen exhaust is venting outside properly too? Cooking moisture can sneak up on you...
- Might save you some hassle (and cash) down the line.


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rachel_barkley

Good points about the kitchen exhaust - seen that plenty of times myself. But I'm curious, have you also checked your bathroom ventilation? Had a client once who blamed his aluminum windows for months, only to find out his bathroom fan was venting straight into the attic...talk about moisture buildup. Sometimes it's these sneaky little things we overlook that cause the biggest headaches later on.


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Yeah, bathroom vents can be sneaky culprits for sure. Have you checked if the ducting is insulated properly? Had a similar issue myself - thought it was windows too, turned out condensation was forming inside the ductwork...lesson learned the hard way.


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swimmer47

Good point about the ducting - I overlooked mine at first too. But honestly, aluminum windows do tend to sweat more than vinyl or wood, especially if they're older. Had to run a dehumidifier in winter just to keep things dry...fun times.


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luckyw99

Aluminum windows do have a reputation for condensation, but it's not always fair to blame the material alone. Older aluminum frames lacked thermal breaks, making them prone to sweating, sure, but newer models with proper thermal barriers perform significantly better. I've seen cases where even vinyl windows sweat badly due to poor installation or inadequate insulation around the frames. So while aluminum might be more susceptible, it's worth checking installation quality and insulation before writing them off completely...


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marior33

Had a client last winter convinced aluminum was the culprit for his window condensation woes. Turns out whoever put them in skipped sealing around the frames completely - talk about shortcuts... Once we fixed that, no more puddles on the sill. Material matters, sure, but installation's key.


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Aluminum windows do tend to transfer cold more easily, so condensation can be a legit issue, especially in colder climates. But like you said:

"Material matters, sure, but installation's key."

I've seen plenty of aluminum windows perform just fine when properly installed and sealed. Had a similar issue myself - thought it was the aluminum frames, but turns out the installer skipped insulating around the rough openings. Once that was sorted, condensation dropped dramatically. So yeah, aluminum isn't always the villain... installation shortcuts usually are.


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Had a similar experience a while back - thought aluminum was the issue too, but turns out the caulking around the frames had cracked over time. Quick fix and things improved a ton. You're right, installation details really do matter more than people think.


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anime841

"Quick fix and things improved a ton. You're right, installation details really do matter more than people think."

Glad someone pointed this out. Aluminum gets a bad rap sometimes because people assume it's always the material causing issues, but honestly, I've seen plenty of cases where poor sealing or rushed installs were the real culprits. I've worked with aluminum windows for years, and while they're not perfect (nothing ever is), they're generally pretty solid if installed correctly.

Your experience with the caulking cracking is actually super common - it's amazing how a simple touch-up can transform things. I once had a client convinced their windows were defective, but it turned out the original installers skipped proper flashing altogether... talk about shortcuts causing headaches. Anyway, good job figuring it out early; you'll probably save yourself from bigger problems down the line.


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aaronrunner

Totally agree about aluminum windows getting unfairly blamed. I've had aluminum frames in my place for about 8 years now, and at first, I thought I'd made a mistake because of condensation issues. Turns out the installers had done a pretty sloppy job sealing around the edges. Once I redid the caulking myself (not fun, but worth it), the humidity problems practically disappeared.

Funny enough, my neighbor had vinyl windows installed around the same time, and he still complains about moisture buildup. Just goes to show that material isn't always the main factor - installation quality and proper sealing make a huge difference. Aluminum can definitely hold its own if you give it a fair shot and a little TLC.


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Had a similar experience here. When we first moved in, our aluminum windows were dripping with condensation every winter morning. I was convinced we'd have to replace them until a friend suggested checking the seals. Sure enough, the previous owner had done a pretty lazy job with the caulking. After spending a weekend redoing it properly, the difference was night and day. Honestly, aluminum gets way too much flak - installation and sealing really are key. Glad you got yours sorted too!


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photographer27

"Honestly, aluminum gets way too much flak - installation and sealing really are key."

Totally agree with this. When we bought our place, the windows were a mess every winter morning - thought we'd made a huge mistake. Turns out the previous owners had painted over the vents, blocking airflow completely. Once we cleared those out, things improved dramatically. Makes me wonder how many window issues are actually ventilation-related rather than material... Did you check your vents too, or was it purely a sealing issue?


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