Couldn’t agree more on nylon—never had much luck with it holding a knot, especially once the humidity kicks in. Polyester’s been my go-to too, but honestly, even that stuff can surprise you if the tracks are rough or there’s old paint gumming things up. I always end up running a bit of wax along the pulleys after sanding, just to cut down on friction. It’s not a perfect system, but at least I’m not chasing runaway sashes anymore. Still think someone needs to invent a cord that doesn’t care about weather or wear... until then, it’s just maintenance and crossed fingers.
Nylon’s always been a letdown for me too—knots slip the first humid week. I’ll second the wax trick, but I also started lightly oiling the pulleys after cleaning them out. Makes a difference, at least for a while. Still, nothing’s really maintenance-free. Every spring, I just brace myself for another round of surprises.
Nylon’s always been a letdown for me too—knots slip the first humid week. I’ll second the wax trick, but I also started lightly oiling the pulleys after cleaning them out. Makes a difference, at least for a while.
I’ve had the same headaches with nylon, especially in an older place like mine (built in the 50s). Sometimes it feels like you just get one thing sorted and another pops up—kind of like whack-a-mole with these windows. I tried switching to cotton sash cord last time around, thinking it’d hold knots better in the humidity, but then I ran into fraying issues after a couple seasons. Wax definitely helps, but I’m not sure there’s a perfect answer.
Lightly oiling the pulleys is a solid move. I use a silicone-based spray since it doesn’t seem to gum up as much as regular oil, but even then, I find myself pulling the sashes out every other year to clean out the dust and old lubricant. The pulleys on my kitchen window squeal if I skip a season.
Maintenance-free…that’d be the dream, right? I’ve looked at those replacement kits that swap out the weights for spring balances, but I’m not convinced they’d last any longer without their own set of issues. Anyone here actually had good luck with those over a few years?
One trick I picked up from an old neighbor: run a thin bead of clear caulk along the meeting rails after cleaning—just enough to keep out moisture. Doesn’t solve everything, but it slowed down the soggy frame problem for me.
Still, come spring, I’m always half-expecting to discover some new quirk. Guess that’s just part of living with character windows...
Nailed it with the “whack-a-mole” comparison—these old windows really do keep you on your toes. I’ve tried the spring balance kits, and honestly, they’re fine for a while but eventually start sticking or rattling in my place (maybe I’m just unlucky). The caulk trick is smart; I’ve only ever used weatherstripping but might give that a shot next round. Sometimes I wonder if there’s a secret society of sash window keepers swapping battle stories...
I get what you’re saying about spring balance kits acting up, but I’ve actually had better luck with them than weatherstripping—at least in older frames where nothing seems square anymore. Weatherstripping always seems to peel off or get gunky in my place. Maybe it’s just the humidity here, but sometimes the “quick fix” ends up being more hassle for me. Funny enough, the real win for me was biting the bullet and rehabbing the sash cords—way more work up front, but smoother in the long run. Anyone else find that old-school is sometimes less headache than the modern solutions?
Interesting, I’ve actually wondered if the old sash cords make a difference on drafts or just how smooth the window moves. Did you notice any change in how airtight things felt after the rehab, or was it mostly about function? Just curious if it helped with energy bills at all.
Funny you ask, because I was a little skeptical about the sash cords making much of a difference with drafts too. When I swapped mine out (the old ones were basically dust and fraying like crazy), I honestly didn’t expect anything except smoother window movement. But here’s the weird part: after I did the whole rehab—cords, pulleys, a bit of weatherstripping for good measure—I actually noticed less of that cold air “whoosh” when walking by the windows in winter.
Now, I’m not gonna claim it shaved a ton off my heating bill, but the rooms definitely felt less drafty. I think half the battle is just sealing up all those little gaps that get exposed when you mess with old windows. The cords themselves might not stop drafts directly, but once you’ve got the sashes moving right and everything lined up, it seems to help tighten things up. If you’re already in there replacing cords, might as well throw in some new weatherstripping too—makes a bigger difference than you’d think.
I get where you’re coming from about the sash cords and the overall rehab making things feel tighter, but I’d actually push back a bit on how much credit the cords themselves deserve for the draft improvement. In my experience, unless the original cords were somehow keeping the sashes from closing all the way (which is rare), just swapping them out doesn’t do much for air leakage by itself. Most of the real draft control comes from properly aligning the sashes, adjusting the stops, and—like you said—adding weatherstripping in all the right places.
One thing I’ve seen a lot with older windows is that people replace cords but don’t always check for warping or paint buildup along the meeting rails and parting beads. Even with brand new cords, if those surfaces aren’t flush, you’ll still get cold air sneaking through. Sometimes you have to plane down swollen wood or even reset the stops to get a proper seal. Weatherstripping is huge, but it’s only as good as the surface it’s sticking to.
Funny enough, I had a job last winter where the homeowner was convinced their ancient pulleys were letting in half the neighborhood’s cold air. Turned out, there was a quarter-inch gap at one end of the top sash because of a warped frame. The cords were fine, but nothing lined up right. Once we squared everything up and added some compressible foam weatherstripping, that “whoosh” you mentioned pretty much disappeared.
Not saying replacing cords isn’t worth it—smooth operation is important and can help everything seat better—but if someone’s main goal is to stop drafts, they’ll get more bang for their buck focusing on alignment and sealing every possible gap. Cords are just one piece of a pretty big puzzle with old windows.
That’s a solid point about the cords not being the real hero with drafts. I ran into a similar thing on a 1920s bungalow—replaced the cords, but still felt a breeze. Turned out, the meeting rails were so caked with old paint, the sashes never closed flush. Once I scraped them down and tweaked the stops, it made way more difference than the new cords ever did. Did you have to deal with any warped wood or stubborn paint layers, or was it mostly just alignment issues?
Yeah, I’ve found the cords are kind of overrated when it comes to stopping drafts. In my case, it was mostly alignment, but there was one sash where the paint was layered on so thick I could barely move it. Had to strip it back to bare wood before things closed right. Warped wood’s a pain, but honestly, old paint’s been the bigger headache for me. Glad to hear you got yours sorted—it’s always a process with these old windows.