Finally Beat the Foggy Window Battle This Winter

I hear you on the foam strips. I tried those a couple years back and they looked good at first, but once winter really set in, they started curling up at the corners for me too. Didn’t help that my kids kept poking at them either... Rope caulk isn’t pretty, but it’s like duct tape for windows - just does the job. I’d rather deal with ugly than drafty any day. Sometimes I wonder if there’s actually a decent-looking solution that lasts more than one season.

Yeah, I know what you mean about the rope caulk. It’s not winning any beauty contests, but it’s the only thing that’s kept my living room window from turning into an icebox. I did try those clear shrink film kits last winter - kind of a pain to put up, but honestly, they held up better than I expected and didn’t look half bad once I got the hang of using a hair dryer on the wrinkles. Not perfect, but better than peeling foam or sticky caulk everywhere. Wonder if there’s a more permanent fix that doesn’t involve replacing the whole window...

I actually tried the shrink film kits too, but in my case, they ended up peeling off after about two months - maybe I didn’t clean the frame well enough, who knows. I’ve been tempted to try those magnetic interior storm window panels. They’re not exactly cheap upfront, but supposedly you can pop them on and off without much hassle, and they look way less temporary than plastic or caulk blobs. Has anyone else had luck with those? My 1970s windows are drafty as heck but I’m not ready to drop thousands on replacements...

They’re not exactly cheap upfront, but supposedly you can pop them on and off without much hassle, and they look way less temporary than plastic or caulk blobs. Has anyone else had luck with those?

Tried the magnetic panels last winter on my old aluminum windows - definitely a step up from the plastic film circus. They’re sturdy and actually seal pretty well if your frames aren’t too warped. Only thing is, you’ve got to measure like your life depends on it, or you’ll end up with gaps (learned that the hard way). Still not as invisible as real storms, but I’d take them over shrink wrap any day. Did you notice any condensation issues with the film kits? Mine used to fog up like crazy...

Only thing is, you’ve got to measure like your life depends on it, or you’ll end up with gaps (learned that the hard way).

That’s exactly what’s kept me from pulling the trigger on those panels - my windows are original to the house (1950s), and nothing is square. I’ve had the same issue with condensation using the film kits; sometimes it was worse than just leaving the window bare. Has anyone tried adding a vent or cracked the panel slightly to see if it helps with moisture? I’m skeptical about whether a “perfect seal” is always the best solution, especially with older frames that already have airflow issues.

I’m skeptical about whether a “perfect seal” is always the best solution, especially with older frames that already have airflow issues.

Honestly, same here. I get why people want that airtight seal, but with my old windows (probably similar vintage to yours), I’ve noticed that trapping every bit of air just makes the condensation worse. The year I tried the shrink film, it actually pooled water at the bottom edge - felt like I was making a mini greenhouse, not solving the problem.

I ended up leaving a tiny gap at the bottom last winter, just big enough for a bit of airflow. Didn’t totally fix it, but at least I wasn’t wiping up puddles every morning. Maybe not the “official” way to do it, but it worked better than the sealed-up approach for me. Sometimes I think these old houses just need to breathe a little, even if it means sacrificing a bit of efficiency. Anyone else notice that perfect seals aren’t always all they’re cracked up to be?

Sometimes I think these old houses just need to breathe a little, even if it means sacrificing a bit of efficiency.

That’s been my experience too. Tried sealing every draft in our 1950s place and ended up with more moisture, not less. It’s a weird balance - efficiency vs. letting the house do its thing. Glad to hear I’m not alone in this.

I’ve noticed the same thing with older homes - tightening them up too much can actually backfire. After I added weatherstripping and sealed up every gap in my 1948 place, condensation on the windows got worse, especially in the kitchen. Ended up having to crack a window now and then just to keep things balanced. Has anyone tried installing a simple vent or using a small HRV unit in an old house? Curious if that helps without overcomplicating things.

That’s a really common issue - older houses need to breathe a bit. I’ve looked into HRVs, but honestly, the cost and install seem like overkill for a small place. A basic wall vent helped in my last house. Not perfect, but it beat having to open windows all winter.

I get where you're coming from about HRVs - pricey and a pain to install, especially in a small space. But I’m not totally sold on wall vents either. Had one in my 1950s bungalow, and it let in a ton of drafts. If you go that route, make sure it’s got a proper damper or you’ll just be heating the outdoors. Sometimes just running the bathroom fan longer after showers made more difference for us than any vent. Not perfect, but less hassle.

That’s a fair point about wall vents - if they’re not sealed well, you basically get a wind tunnel when it’s cold out. I’ve had similar issues in my last place, and honestly, I ended up taping over the vent half the winter. Using the bathroom fan longer is underrated though. It’s not a perfect fix, but sometimes the simplest approach really does enough, especially if opening up walls or dropping cash on an HRV just isn’t realistic.

Honestly, taping over vents is what I did too, even though everyone says you “shouldn’t block airflow.” Sometimes you just need a quick fix when it’s freezing and the draft is brutal. I’m with you on the bathroom fan - leaving it on an extra 15-20 minutes after a shower made a way bigger difference for me than I expected. Not perfect, but unless you’re ready to gut your walls or drop thousands, it’s practical. The HRV thing sounds great in theory but who’s got that kind of cash lying around?

Taping over vents - yeah, I’ve seen that trick more times than I can count. Honestly, sometimes you just need to stop the Arctic blast and worry about “proper airflow” later. I do have to throw in, though, if you’ve got old windows (think 80s aluminum sliders), no amount of tape or fan time will totally fix the fog. I swapped out a couple of my worst offenders last fall - just the ones that were basically waterfalls - and it made a bigger difference than I expected. Not cheap, but I did it one window at a time. Sometimes you gotta pick your battles... and your budget.

That’s the truth about those ancient aluminum sliders… I’ve seen more fog inside those than on a cold beer can in July. I’ve tried every shortcut - plastic film, weatherstripping, you name it. But swapping out even one or two makes a world of difference. Not cheap, but neither is running the heater 24/7. Sometimes you just gotta bite the bullet, one window at a time.

I hear you on the price, but honestly, after swapping out two of mine, the drafts dropped way down. Did you notice any weird issues with the install? I had to reframe one opening because nothing was square... figures, right?

I had to reframe one opening because nothing was square... figures, right?

- Same here, my house is from the 60s and nothing lines up. Had to shave a bit off one side just to get the new window in.
- Didn’t get any weird issues except the trim didn’t want to go back on flush. Ended up just caulking it and calling it good.
- Noticed the drafts are way better, but now I’m seeing condensation at the bottom corners. Not sure if that’s normal or if I missed something with the install.
- Did you use spray foam or just regular insulation around the frame? I tried both and honestly can’t tell if it made a difference.

Curious if the new windows changed your heating bill much? Mine dropped a little, but maybe I’m expecting too much.

Noticed the drafts are way better, but now I’m seeing condensation at the bottom corners. Not sure if that’s normal or if I missed something with the install.

I ran into the same thing after swapping out my old windows last fall. The drafts are gone (finally), but then I started noticing that little bit of moisture in the corners when it got really cold. From what I’ve read, it’s pretty common, especially if your house is a bit “tight” now and doesn’t breathe like it used to. I guess the humidity just settles on the coldest part of the glass.

On the insulation, I went with spray foam around the frame because everyone online swears by it, but honestly, can’t say it made a massive difference compared to the old fiberglass. Maybe a tiny bump in comfort? Or maybe I just want to believe it did after all the mess.

As for bills, mine dropped a bit, but not as much as I hoped. Maybe 10%? Hard to tell with how much rates keep changing. Still, feels good not having to tape plastic over everything every winter.

The drafts are gone (finally), but then I started noticing that little bit of moisture in the corners when it got really cold.

That’s been my experience too. Once I tightened up the house, condensation showed up in places it never used to. It’s kind of a trade-off - less cold air sneaking in, but now you’ve got to watch the humidity. I ended up running a dehumidifier in the winter, especially after showers or when cooking, and that seemed to help a bit.

About the spray foam, I hear you. I tried both foam and fiberglass on different windows, and honestly, the difference is pretty minor unless you’ve got big gaps. The foam is messier, and I’m not convinced it’s always worth the hassle for just a small boost.

Curious - did you notice any difference in noise reduction with the new windows? Mine cut down on street noise a lot, which was a nice bonus. Just wondering if that’s been the case for others too.

Curious - did you notice any difference in noise reduction with the new windows?

Funny enough, I did. The double-pane units really took the edge off the neighbor’s barking dog - less like living next to a kennel now. Still get a bit of street noise, but nothing like before. Condensation’s a pain though; it’s a balancing act between insulation and ventilation. I’ve seen people go overboard sealing everything up tight, then end up running exhaust fans all winter just to keep the glass clear.

Had a similar situation after swapping out my old single panes last fall. The noise difference was decent, but I’ll admit, I was expecting total silence - didn’t quite get that. As for condensation, yeah, it’s a bit of a circus act. Tried plugging every draft and suddenly the windows were sweating like crazy. Ended up cracking one open just a hair most days, which kinda defeats the purpose but keeps the glass clear. There’s always a catch with these upgrades...