Why Do My Aluminum Windows Always Sweat in the Morning?

- Totally get where you’re coming from. My old place had the same issue—those aluminum frames are like magnets for condensation.
- Here’s what helped me:
- Added thick curtains at night, kept them open during the day to let air circulate.
- Ran a small fan near the windows on cold mornings. Not pretty, but it worked.
- Used a cheap dehumidifier in the worst room. Surprised how much water it pulled out.
- Some folks swear by window insulation film, but I found it a pain to install and didn’t love the look.
- Not a perfect fix, but it kept the puddles down. Replacing the windows is pricey, so these little tweaks might buy you some time.

- Had the same issue last winter—aluminum frames just seem to attract moisture.
- Tried running a fan, but honestly, it only helped a bit.
- Measured humidity and found it spiked overnight. Small dehumidifier made a noticeable difference.
- Never bothered with insulation film... looked too fiddly for me.

- Had the same condensation problem—aluminum frames are like magnets for water.
- Tried the fan trick too, but it mostly just made my curtains dance.
- Dehumidifier definitely helped, though I had to empty it way more often than I expected.
- Gave the insulation film a shot once... ended up with more plastic stuck to my hands than the window.

- Had the same condensation problem—aluminum frames are like magnets for water. - Tried the fan trick too, but it mostly just made my curtains dance.

Yeah, the dehumidifier route definitely makes a difference, but I get what you mean about having to empty it all the time. Mine fills up crazy fast in winter, especially after showers and cooking. I’ve also tried that plastic film stuff—total mess the first time, but I found if you use a hair dryer and go slow, it actually seals pretty decent. Still not perfect though.

One thing I noticed: when I leave the blinds up a bit at night (instead of shutting them tight), I get less water on the windows in the morning. Guess it lets the warm air move around more? Not sure if that’s just my place or what.

I keep seeing people mention window insulation kits, but honestly, with aluminum frames, they still act like little cold bridges. Warm inside air hits that cold metal and boom—instant puddles. My neighbor tried putting those foam strips around his frames and swears it helped a bit, but I haven’t gotten around to it yet.

Replacing the windows is way out of my budget for now. I did see someone online using those moisture absorber tubs (like DampRid) on the window sills. Might be worth a shot for the worst rooms?

Anyway, glad it’s not just me dealing with this. 90s aluminum windows are a pain sometimes, but I guess they’ll outlive us all… just a little soggier than we’d like.

One thing I noticed: when I leave the blinds up a bit at night (instead of shutting them tight), I get less water on the windows in the morning. Guess it lets the warm air move around more? Not sure if that’s just my place or what.

You’re definitely onto something with the blinds. It’s wild how much something that simple can make a difference, right? When you keep those closed tight, you’re basically trapping cooler air against the glass, which is already a cold surface thanks to the aluminum. That just makes condensation more likely. Leaving them up even a couple inches seems to let warmer air circulate and dry things out a bit.

The “cold bridge” problem with aluminum frames is real. They’re sturdy and low-maintenance, but as you said, they pull heat right out of the room and love to collect water. Foam strips can help a little by reducing drafts around the frame, but they don’t really stop the metal from getting cold in the first place. Still, if your neighbor saw improvement, maybe it’s worth trying in a couple problem spots?

I’ve seen people use DampRid and similar moisture absorbers on window sills in older apartments. They do soak up some of that extra humidity—especially if you’re cooking or showering a lot—but they fill up quick in winter. Kind of like dehumidifiers: they work, but it’s another thing to keep emptying.

Funny you mention window kits—I’ve helped install those for folks who aren’t ready to upgrade their windows yet. They can help cut down drafts and slow condensation if you seal them well, but yeah, getting them tight without wrinkles or leaks is half art, half patience (and maybe a little luck). If you’ve got pets or open your windows often, they’re kind of a pain long-term.

Honestly, unless you’re ready for a big investment in new windows (which most people aren’t), it’s all about layering up these smaller fixes—dehumidifier, better circulation, sealing leaks, maybe even running your bathroom fan longer after showers. None of them are perfect solo, but together they do add up.

It’s not just your place—90s aluminum windows are notorious for this stuff. You’re definitely not alone there. Sometimes I wonder if builders back then just didn’t think about how much water would end up dripping down those sills every morning...

They’re sturdy and low-maintenance, but as you said, they pull heat right out of the room and love to collect water.

That’s the exact headache I’ve had with my place. Built in ‘94, so classic aluminum frames everywhere. I tried the whole DampRid routine last winter—worked for about a week before I was just constantly dumping the thing out. I don’t know if it’s just me, but those moisture absorbers feel like a band-aid more than a fix.

I actually disagree a bit about the foam strips, though. Maybe it’s my setup, but adding them around the frames knocked down the draftiness a lot more than I expected. Didn’t totally solve the condensation, but at least my living room didn’t feel like an icebox.

Leaving the blinds up a crack is something I stumbled into by accident when I forgot one night—woke up to way less water on the sill. Makes me wonder if most of us just overthink it sometimes. That said, I’d love to swap these windows out for something halfway modern, but until then, it’s all about these little hacks.

That’s pretty much been my experience too—aluminum frames just seem to attract condensation, no matter what you try. I’ve lived with them for years and honestly, even with all the gadgets and tricks, it’s mostly about damage control. Foam strips did help me a bit with drafts, but like you said, they don’t really solve the sweating issue. For me, the biggest difference was running a small fan near the windows overnight. Doesn’t look great, but it keeps air moving and cuts down on the water buildup in the morning.

I hear you on the DampRid. I used to go through those tubs like crazy. The stuff works, but it’s just a constant cycle of refilling and emptying. Swapping out for modern double-pane or vinyl windows would be ideal, but until then, it’s just about making things a little less miserable. Funny enough, I also noticed way less condensation when I left the blinds up a bit—must be an airflow thing.

At this point, I just keep a towel handy and wipe them down in the mornings. Not glamorous, but it keeps the sills from getting gross.

Honestly, you nailed it.

At this point, I just keep a towel handy and wipe them down in the mornings. Not glamorous, but it keeps the sills from getting gross.

I get the towel thing, but doesn’t it feel like just treating the symptom?

“sometimes you just have to accept the reality of older aluminum windows”