Keeping street noise out: what works for sealing old windows?

I get where you’re coming from - old windows can be a pain with both drafts and noise. I tried those foam weatherstrips (the sticky kind) on my 60s-era casement windows, and honestly, they helped a bit with the draft, but street noise was still getting through. The seals do cut down some sound, but not as much as I hoped. If you layer up - like heavy curtains on top of sealing gaps - it’s noticeably quieter, though not perfect. Acoustic seals are pricier and felt a little overhyped to me, but maybe I just didn’t install them right. Worth a shot if you’re desperate, but don’t expect miracles. You’re definitely not imagining things about the noise creeping in.

Heavy curtains definitely help, but man, I swear my 1950s windows just let sound sneak in no matter what I stick on them. Ever try those window film kits? I’ve heard mixed things - some folks say they help with noise, others not so much. Curious if anyone’s had luck with those or if it’s just another “looks good on the box” situation.

Heavy curtains definitely help, but man, I swear my 1950s windows just let sound sneak in no matter what I stick on them.

Yeah, the old windows are like, “What’s this? Another layer? Cute. I’ll just let the noise in around the edges.” I tried those plastic window film kits last winter, but honestly, I didn’t notice a huge difference with sound. Maybe a tiny bit less draft, but the street noise still came through - especially sirens and those lovely 2am motorcycles. I guess the film is more for insulation than actual soundproofing?

Has anyone messed around with those foam weatherstrips or the rope caulk stuff? I keep seeing them at the hardware store and I’m tempted, but I’m also not sure if it’s just going to make my windows look like a DIY disaster zone. Also, does anyone know if there’s a trick to getting those old sashes to actually seal, or is it just a losing battle unless you replace the whole thing? I’m renting, so new windows are out of the question, but I’d love to not hear every single car door slam.

Curious too if anyone’s tried those big acrylic window inserts (like Indow or something similar)? They’re supposed to be removable and help with both drafts and noise, but they’re kinda pricey. Wondering if they’re worth the hype or if it’s just another “sounds great until you try to install it” situation.

I get that nothing short of a full window replacement will make it totally silent, but if there’s a way to at least muffle the worst of it without spending a ton, I’m all ears.

Maybe a tiny bit less draft, but the street noise still came through - especially sirens and those lovely 2am motorcycles. I guess the film is more for insulation than actual soundproofing?

- Tried both foam weatherstripping and rope caulk on my 60s windows - foam helped a bit with drafts but not much with noise. Rope caulk was better at blocking gaps, but it’s not the prettiest if you care about looks.
- Heavy curtains did more for muffling sound than any tape or film I tried, honestly.
- Looked into those acrylic inserts too. Pricey, yeah, but a coworker swears by them for city noise. I haven’t pulled the trigger because of cost and measuring hassle.
- Getting old sashes to seal is tough…I shoved some felt in the worst gaps and it helped a little, but nothing miraculous.
- Realistically, unless you can double up glass or use inserts, it’s just about reducing - not eliminating - the noise.

You nailed it - most of those DIY fixes just take the edge off, but don’t expect miracles. I’ve worked on a lot of old windows, and honestly, unless you’re willing to do real storm inserts or replace the sashes, you’re just patching. Heavy curtains are underrated though; I’ve seen them make a bigger difference than any caulk or foam. Rope caulk works but yeah, it’s not winning any beauty contests. If you’re after real quiet, secondary glazing (like those acrylic panels) is the way to go, but they’re a pain to measure and install, and not cheap. Sometimes you just have to live with a bit of city soundtrack...

Heavy curtains are underrated though; I’ve seen them make a bigger difference than any caulk or foam.

Funny how true that is. I’ve been in some old brownstones where the only thing between you and the street was a rattly sash and a thick velvet curtain - and honestly, it helped more than I expected. Secondary glazing does work wonders, but yeah, getting the panels cut to size is a headache, especially if your windows aren’t square (which, let’s face it, most old ones aren’t). Rope caulk’s fine for a quick fix, but it starts looking grimy after a season or two. If you’re renting or just not ready for full-on window replacement, sometimes layering solutions - like curtains plus a temporary acrylic panel - gets you 80% there without breaking the bank.

- Heavy curtains do a lot more than people think. I’ve got some lined ones in my living room - probably the best “quick fix” for both noise and drafts.
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“sometimes layering solutions - like curtains plus a temporary acrylic panel - gets you 80% there without breaking the bank.”

I’d love to replace my old windows someday, but until then it’s all hacks and heavy fabric for me.

Stacking fixes has been my go-to. Here’s what actually helped in my 1960s place: first, I stuck on adhesive weatherstripping (the foam kind) around the window frames - takes 10 minutes, cheap, and makes a surprising difference for both drafts and noise. Next, I hung blackout curtains (double rods for extra thickness). Not pretty, but it’s wild how much street noise they muffle. For gaps at the bottom, those tube draft stoppers work, but I wrapped mine in fabric to match the curtains so they blend in a little better. It’s not perfect, and yeah, new windows would be amazing... but this combo’s made things way more livable.

Funny, I did almost the same thing last winter when my old windows started rattling every time a bus went by. I used that rope caulk stuff too - super cheap, but if you forget it’s there and open the window, it gets everywhere. Blackout curtains were a game changer for me, though. I swear, my living room went from “city soundtrack” to “muffled jazz club.” Not perfect, but honestly, I’ll take any improvement until I can afford proper replacements.

- Rope caulk is honestly a lifesaver for drafty windows, but yeah, it’s messy if you forget it’s there - been there, done that.
- Blackout curtains helped me too, but I noticed they don’t do much for the low rumble from trucks outside.
- I tried sticking some weatherstripping foam around the edges and it cut down a bit more noise, plus drafts.
- Has anyone tried those window film kits? I keep seeing them at the hardware store but not sure if they’re worth the hassle...
- Still dreaming of new windows someday, but for now, every little bit helps.

- I tried sticking some weatherstripping foam around the edges and it cut down a bit more noise, plus drafts. - Has anyone tried those window film kits?

Tried the window film kits a couple winters back - honestly, they’re not as much of a hassle as they look. Bit fiddly with the hair dryer, but once you get the hang of it, it’s fine. They helped with drafts and maybe took the edge off some noise, but don’t expect miracles for truck rumble. Still, for old windows, it’s cheap and easy enough that I’d say give it a shot. New windows are a dream here too... until then, I just keep layering fixes like you all.

Yeah, I’ve had a similar experience with the window film kits - definitely not rocket science, but you do need a little patience, especially if you’ve got cats that think plastic is a new toy. I’d say they’re more of a draft blocker than a noise solution, though. For noise, I found heavy curtains (like, the thick blackout kind) actually made a bigger difference than the film. Not perfect, but the combo of foam, film, and curtains is about as good as I’ve managed without shelling out for new windows.

One thing I tried that didn’t help much: those “acoustic” caulk tubes. Maybe I did it wrong, but it was messy and barely made a dent. Anyone else notice that? At this point, I’m convinced old windows just want to keep you humble.

I’ve run into the same thing with acoustic caulk - honestly, I think it’s more effective for sealing up gaps for air leaks than for blocking any real noise. If you’ve got big gaps or cracks, it helps a bit, but once you’re down to the tiny stuff, I couldn’t really tell a difference either. And yeah, it’s messy. I ended up with more on my hands than in the window frame.

Heavy curtains definitely pull more weight for sound than most people expect. I put up some thick velvet ones last winter and noticed the street noise dropped off a notch - plus, they help with drafts too. The window film is mostly a draft fix in my experience, though it does seem to dull the really high-pitched sounds a little.

One thing that helped me was adding weatherstripping tape around the sashes. Not perfect, but it tightens things up without much cost or hassle. Old windows are stubborn... sometimes it feels like you’re just stacking layers and hoping for the best.

- Totally agree about the caulk - half of mine ended up on my sweatshirt.
- Curtains made a bigger difference than I expected, honestly.
- Tried those rubber draft stoppers at the bottom too. Not magic, but less street noise.
- At this point, I’m just layering stuff and hoping my windows don’t fall out...

At this point, I’m just layering stuff and hoping my windows don’t fall out...

Honestly, that’s not far off from what I see in a lot of older places. Layering does help, but it’s kind of a band-aid. If you’re dealing with single-pane glass and original frames, even heavy curtains and draft stoppers only go so far. Have you tried using window film or those acrylic interior storm panels? Curious if anyone’s had luck with those, since I’ve seen mixed results - sometimes they help, sometimes they just fog up or peel off.

Window film’s hit or miss in my experience - sometimes it peels at the corners, especially if you get condensation on those old sashes. The acrylic panels can help with both drafts and noise, but only if you install them really tight to the frame. If there’s even a little gap, you’ll still hear everything outside. I’ve done a few jobs where folks tried the cheaper stick-on kits, but honestly, they rarely last more than a season. If the frames are still solid, adding real interior storm windows (the kind that screw or clamp in) seems to be the only semi-permanent fix short of full replacement. Not cheap, but less hassle than fighting with tape and plastic every year...

I hear you on the stick-on kits - they never seem to survive more than one winter in my place either, especially with the humidity swings we get. I’ve wondered about those magnetic interior storm panels that fit snugly but can be removed for cleaning. Has anyone tried them long-term? I’m curious if they hold up better than the clamp-in types, especially for blocking noise. My old double-hungs are drafty but still solid, so full replacement feels like overkill...

I actually tried the magnetic panels a couple years back - mostly because I got tired of fighting with the plastic every fall. They definitely sealed better, and I noticed a drop in drafts, but I wouldn’t say they blocked out as much street noise as I’d hoped. Maybe it’s because my window frames aren’t perfectly flat, so there were tiny gaps? Still, less hassle than the clamp-in ones. Has anyone experimented with adding a thin layer of acoustic foam or anything like that between the panel and glass? Wondering if that would help with noise without making things look weird.

Has anyone experimented with adding a thin layer of acoustic foam or anything like that between the panel and glass? Wondering if that would help with noise without making things look weird.

Tried something similar on a 1920s bungalow - cut a strip of 1/8" closed-cell foam to fit between the panel and the glass. It did help a bit with rattling, but honestly, I didn’t notice much change in noise reduction. The real issue is usually air gaps; even a tiny one can let sound sneak through. Ever looked into using a bead of clear silicone around the frame before putting the panel on? It’s not permanent and can fill those uneven spots pretty well. Curious if anyone’s had luck with heavier laminated panels instead of just acrylic?