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Keeping window glass dry: what actually works?

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politics903
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(@politics903)
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That’s wild, I thought it was just me dealing with the puddles under the windows every winter. I tried the window film this year on our 1970s ranch house and honestly, it’s not perfect but it’s way better than nothing. Still get a little fogging on the corners, but at least I’m not wiping up water every morning.

I’m curious—has anyone tried those moisture absorber tubs (like DampRid) near their windows? I saw them at the hardware store and wondered if they’d help with condensation or if that’s just wishful thinking. I keep reading about dehumidifiers too, but our house isn’t that big and I’m not sure if it’d be overkill for just a couple problem windows.

Also, does caulking around the window frames actually help with this stuff? Or is that more for drafts than moisture? Just trying to figure out what’s worth the effort before winter really settles in...


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- Moisture absorbers like DampRid can help a bit, but honestly, they’re more effective in small enclosed spaces (think closets or under sinks). By the window, they might make a dent if the room’s really humid, but don’t expect miracles.
- Dehumidifiers do work—just depends how much condensation you’re seeing. For a couple windows, a small portable one could be enough. I’ve seen folks use those mini ones and just move them around as needed.
- Caulking is mainly for stopping drafts and air leaks, but it does help keep warm, moist indoor air from sneaking into the cold parts of your window where condensation forms. If you see gaps, it’s worth sealing them up. I’d say do it for energy savings anyway.
- Window film is a solid step. If you’re still getting fogging in the corners, check for leaks around the sash or frame—sometimes old weatherstripping just gives up over time.

I grew up in an old farmhouse and we always had towels on the sills every winter until my dad finally replaced all the caulk and added storm windows... made a bigger difference than the moisture tubs ever did. Sometimes it’s a bunch of little fixes that add up.


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mentor36
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- You're spot on about the little fixes adding up. In my place (built in the 60s), just sealing the old window frames made a noticeable difference—less moisture, fewer drafts, and the heating bill dropped a bit.
- I’ve tried those moisture tubs too. They help a bit, but honestly, nothing beats tracking down where the air’s sneaking in and dealing with that directly.
- Window film is underrated. It’s not perfect, but it cuts down on cold spots and keeps condensation from getting out of hand.
- Don’t get discouraged if you still see some fogging after doing a few things. Sometimes it takes a season or two to really dial it in. Small changes can make a big impact over time.


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marymiller99
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just sealing the old window frames made a noticeable difference—less moisture, fewer drafts, and the heating bill dropped a bit.

That lines up with what I see a lot—air leaks are usually the main culprit. I’ve worked on plenty of houses where folks tried moisture tubs or window film first, but didn’t see big results until we actually sealed up the trim and sashes. Ever checked your exterior caulk lines? Sometimes that’s where the real gaps hide. Curious if anyone here has tried swapping out just the glass vs. full window replacement for condensation issues? Seen both approaches work, but not always worth the cost unless your windows are really shot.


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milo_ghost
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I’ve noticed the same thing—sealing up the frames and sashes made way more difference than any of those moisture-absorbing tubs. I did try swapping out just the glass panes in one room, though, since the old seals had failed. Honestly, it helped with the fogging between panes but didn’t do much for condensation on the inside. Has anyone had luck with interior storm windows? I keep hearing mixed reviews but haven’t tried them myself.


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writing966
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Yeah, those moisture tubs are basically air fresheners for your wallet. Swapping panes is a step up, but like you said, it doesn’t really tackle the sweaty-glass issue. I’ve put in a couple interior storms—honestly, they made a noticeable difference in my drafty old living room, but I did have to tweak the fit because my window frames aren’t exactly square anymore. Did you notice more condensation in rooms that get less sun? I swear my north-facing windows are always the worst offenders.


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mountaineer13
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North-facing windows are the bane of my existence in winter. I’ve noticed the same thing—way more condensation compared to the sunny side. My theory is the lack of sunlight keeps those panes colder, so any indoor humidity just clings to the glass. I tried running a dehumidifier in those rooms, which helped a bit, but it’s not a magic fix. Also, you’re spot on about old frames making interior storms tricky... mine are so warped I felt like I was wrestling an octopus trying to get a decent seal.


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(@amanda_paws)
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Man, you nailed it with the octopus comment—old frames are a nightmare. I’ve seen some windows so warped I swear they were trying to escape the house. You’re right about the north side too; those panes stay chilly and just suck up every bit of moisture from the air. Dehumidifiers help, but if your frames are shot, even the fanciest storm window’s gonna leak somewhere. Sometimes I just throw a towel on the sill and call it a day... not pretty, but it works in a pinch.


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(@sfluffy98)
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Towels on the sill—been there, done that, and honestly, sometimes it’s the only thing that keeps puddles off the floor. I tried those window insulation kits one winter and they helped a bit, but if the frame’s already toast, it’s just a band-aid. North side windows are brutal... mine sweat like crazy when temps drop. At some point you just have to bite the bullet and swap out the worst offenders, but until then, I’m with you—whatever keeps things (mostly) dry works.


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charlietrekker967
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I’m totally in the “towels everywhere” club too. My old apartment had these ancient single-pane windows and I swear, they’d sweat more than I do at the gym. Tried the plastic shrink-wrap kits one year—looked like I was prepping for a hurricane, but it did cut down on the drips a bit. Still, if the frame’s already rotting, it just sort of feels like putting a tiny umbrella on a sinking ship. Has anyone actually found a cheap fix that lasts longer than a season?


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