I’ve had mixed luck with sanding too—took off a bit too much once and ended up with a drafty mess. Wax has been my go-to lately, but I do wonder how long it’ll hold up. Humidity’s definitely a pain with old wood windows. Sometimes I think weatherstripping helps more than anything, but it’s never perfect.
Sometimes I think weatherstripping helps more than anything, but it’s never perfect.
- Weatherstripping does help, but I’ve noticed it can compress over time, especially with old sash windows. Gaps come back, and you’re back to square one.
- Wax is a quick fix, but in my experience, it doesn’t last through a full season—humidity and temperature swings tend to break it down faster than you’d expect.
- If sanding’s taken too much off, you might actually get better results building the surface back up. I’ve used wood filler or even a thin shim glued in place, then sanded flush. Not pretty, but it can tighten things up.
- For stubborn humidity issues, I’ve had some luck with those V-seal strips (the adhesive kind). They flex with the window and seem to hold up better than the foam stuff.
- One thing I’d push back on: sometimes the “perfect” seal isn’t ideal. Old wood needs to breathe a bit, or you risk trapping moisture and causing rot.
It’s always a balancing act—tight enough for efficiency, loose enough to let the window survive another season.
Funny you mention V-seal strips—they’re about the only thing that’s survived more than two winters in my place. I tried the foam stuff once and it basically turned to mush after the first humid week. I’m with you on not going for a “perfect” seal, though. One year I went overboard and sealed everything up so tight, I ended up with condensation trapped inside the sashes. Took forever to dry out and I’m pretty sure a spider colony moved in during the process... Lesson learned: let those old windows breathe a bit or you’ll get more than just drafts to worry about.
Yeah, I’ve had that happen with the foam too—just kind of disintegrates once the humidity kicks in. I used to think the tighter the seal, the better, but after a winter where I basically wrapped my windows like leftovers, I got that same condensation problem. Ended up with water pooling inside the frames and a weird musty smell that took weeks to clear out. I guess there’s a fine line between drafty and damp.
Funny thing is, the old metal locks on my windows have actually lasted longer since I stopped going crazy with weatherstripping. When there’s a little airflow, they don’t get all rusty from trapped moisture. I do still use V-seal strips in the worst spots, but I leave a bit of a gap here and there just to let things breathe. It’s not “perfect,” but at least I’m not fighting mold or spiders anymore... well, not as much anyway.
That’s interesting, because I’ve actually had the opposite experience with leaving gaps. Maybe it’s just my house (1970s, leaky as heck), but when I tried not sealing everything tight, all I got was freezing drafts and higher heating bills. I get what you’re saying about the condensation, though—had a nasty patch of mold behind the couch once from that. I guess it’s just a balancing act, but I still lean toward sealing things up and using a dehumidifier when it gets bad. Not perfect, but at least the locks stay dry and my toes aren’t frozen.
I guess it’s just a balancing act, but I still lean toward sealing things up and using a dehumidifier when it gets bad. Not perfect, but at least the locks stay dry and my toes aren’t frozen.
Yeah, I hear you on that—my place is newer (2010s build), but I still get those weird cold spots if I don’t seal up tight. I tried leaving a window cracked once for “airflow” and just ended up with a living room that felt like a walk-in freezer. Haven’t had mold yet (knock on wood), but I’m always paranoid about it. Do you find the dehumidifier actually helps with the locks, or does it just make the air feel drier? I’m still figuring out the sweet spot between “fresh air” and “arctic wind tunnel.”
- Totally get the struggle—my place is late 90s, and even after new insulation, I still get those random drafts. Sealing up makes a difference, but then it’s like, “where does all this humidity go?”
- I’ve found the dehumidifier actually does help with the locks, not just the air. When I skip a week (or forget to empty it), my window locks start feeling sticky or even show a bit of surface rust. Might be climate—I'm in Ontario, so winters are brutal and damp.
- Air just feels drier overall, which is nice for the hardware but sometimes rough on my skin. I keep a cheap hygrometer around to make sure I'm not turning my house into the Sahara.
- Tried the “crack a window” thing too—never again in January. All I got was cold toes and higher heating bills. Not worth it for me.
- One thing that helped: I put a little silica gel pack by each lock (just tape it behind the frame). It’s low-tech but seems to keep condensation down right where it matters.
- For airflow without freezing out, I started running the bathroom fan for 10-15 minutes after showers and cooking instead of opening windows. Seems to keep things balanced without turning my place into an icebox.
It’s definitely not perfect—sometimes you gotta pick between fresh air and keeping your hardware happy. Haven’t figured out the magic formula either, but at least my locks aren’t corroding anymore... small wins, right?
That’s a pretty clever hack with the silica gel packs—never thought to just tape them right near the locks. I’ve always been a bit skeptical about how much those little packets can actually do, but if you’re seeing less condensation, maybe I’m underestimating them. My place is early 2000s, so not ancient, but still drafty in weird spots. I’ve tried weatherstripping and caulking, but there’s always some sneaky airflow, especially around the windows.
The dehumidifier is a double-edged sword for me. It definitely helps with that sticky feeling on metal parts, but I swear it dries my sinuses out if I’m not careful. Plus, running it all winter seems like it eats up more electricity than I’d like—have you noticed a spike in your hydro bill since you started using it more? I’m always torn between keeping humidity down for the hardware and not making my place feel like a desert.
Running the bathroom fan after showers is something I picked up from my dad, who’s obsessed with “moisture management” (his words, not mine). It helps, but sometimes I wonder if all that warm air just gets sucked right outside and bumps up my heating costs. Kind of feels like robbing Peter to pay Paul.
Have you ever tried those trickle vents? They’re supposed to let in just enough fresh air without the full-on draft, but I’ve read mixed reviews. Not sure if they’re worth cutting into an existing window frame for, though. Curious if anyone’s had luck with those or if it’s just another gadget that promises more than it delivers.
Anyway, small wins are definitely better than nothing. Still chasing the sweet spot between comfort and efficiency myself...
I’ve wondered the same thing about those trickle vents. The idea sounds great—fresh air without the full-on draft—but I can’t quite bring myself to cut into a perfectly good window frame, especially when I’m not convinced it’ll actually help. My neighbor installed them last year, and he said they made a difference in reducing condensation, but he still gets cold spots near the windows. Not sure if it’s worth the hassle or if it’s just another thing to clean dust out of.
On the dehumidifier front, totally agree about the trade-off. Mine definitely bumps up the hydro bill if I leave it running nonstop, and I end up waking up with dry eyes and a scratchy throat. I started running it on a timer—just a couple hours in the evening—and that seems to be enough to keep things from getting too muggy without turning my place into the Sahara.
Bathroom fans are tricky too. Feels like you’re just blowing all your paid-for heat outside... but then again, mold is worse. Sometimes I just open a window for five minutes instead and hope for the best. It’s always some kind of compromise, isn’t it?
Feels like you’re just blowing all your paid-for heat outside... but then again, mold is worse.
That’s the eternal struggle, isn’t it? I’m always torn between keeping the place airtight for efficiency and letting in enough air so I don’t end up with damp walls. Trickle vents sound good on paper but honestly, the idea of cutting into a decent frame makes me wince too. I’ve seen them get clogged with dust pretty fast, and unless you’re religious about cleaning, they’re not exactly “set and forget.”
Dehumidifier on a timer is smart though. I tried running mine overnight once—woke up feeling like I’d spent the night in a bag of silica gel.