I’m torn between double and triple glazed windows for my apartment—traffic noise is wild where I live (sometimes it feels like the buses are driving through my living room). I’ve heard triple glazing is better, but is it really worth the extra cash? Anyone notice a big difference, or is it just marketing? Would love to hear what’s worked for you all.
Triple glazing does block out more noise, but it’s not a night-and-day difference unless there’s a big air gap between the panes. I went with high-quality double glazing and heavy curtains—honestly, it made a bigger dent than I expected. Triple’s pricier, and for apartments, sometimes not worth the extra unless you’re right on a super busy road.
Triple glazing does block out more noise, but it’s not a night-and-day difference unless there’s a big air gap between the panes.
That’s pretty much what I’ve found too. The air gap seems to matter more than just adding another pane. Heavy curtains definitely help, but I’m curious—did anyone measure the decibel reduction before and after? I wonder if there’s a point where spending more on triple glazing gives diminishing returns, especially when factoring in energy efficiency versus noise control. Has anyone noticed a big difference in thermal performance with triple over double, or is it mostly negligible in city apartments?
I’ve swapped out a lot of windows over the years, and I’ve gotta say, in most city apartments, the thermal jump from double to triple glazing isn’t as wild as people hope. You’ll get a bit less draft and maybe the room feels a touch more stable in the winter, but if your building’s already got halfway decent insulation, it’s not a game-changer. Noise-wise, yeah, that air gap is the biggie—seen more impact from a wider gap and laminated glass than just stacking another pane in there.
Funny thing is, I once did a decibel test for a client who lived right above a busy intersection. We went from old single panes to double, then later to triple (he was on a mission). The first upgrade cut noise by a good chunk, but the double to triple was more subtle—maybe 3-4 decibels difference. He said the street still “felt” present, just less harsh. Curtains helped more than he expected, honestly.
Curious—has anybody tried those secondary glazing panels you can add inside? I’ve heard they can make a surprising difference for less cash.
You’ll get a bit less draft and maybe the room feels a touch more stable in the winter, but if your building’s already got halfway decent insulation, it’s not a game-changer.
Triple glazing always sounded like the gold standard to me, but after living with both types, I’d agree with what’s been said—there’s a point of diminishing returns. My house is from the 70s, and when we switched to double glazing (with laminated glass), it was a night-and-day improvement over the old single panes. Later, we tried triple on just one side facing a busy road. Honestly, the difference in noise reduction wasn’t dramatic—noticeable, but not enough to justify the price for every window.
Secondary glazing panels are an interesting workaround. A neighbor in our building added them and swears by the results, especially since they’re much cheaper and less hassle than full replacement. They do make opening windows a bit awkward, though. If you’re mostly worried about sound and not so much about heat loss, that might be worth looking into before going all-in on triple glazing.
I get where you’re coming from about the diminishing returns. We switched out all our old single panes for double glazing back in the early 2000s, and it was like suddenly living in a different house—less noise, warmer rooms, no more condensation running down the windows every morning. I remember thinking at the time, “Why didn’t we do this years ago?”
A few years later, we got tempted by all the hype around triple glazing and had one put in on the bedroom window that faces the street. Can’t say it was a game-changer for traffic noise. Maybe a bit quieter, but nothing like that first jump from single to double. Honestly, I’d have a hard time justifying the extra cost for every window, especially since most of our house doesn’t face busy roads.
Secondary glazing is something I’ve seen neighbors try too. One guy on our street swears by it for his home office—he’s right on the bus route—but he also grumbles about having to fiddle with two sets of windows every time he wants some air. Tradeoffs everywhere.
You’re right about insulation making a bigger difference than people realize. If your walls and roof are already sorted, spending thousands on triple glazing just isn’t going to have that wow factor unless you’re in a really noisy spot or super focused on energy bills.
Anyway, sounds like you’ve done your homework and lived with both setups. That’s more than most folks can say. Sometimes “good enough” really is good enough, especially if you’d rather put your money toward something else around the house.
That lines up with what I’ve noticed too—double glazing made a massive difference for us, but triple just didn’t blow me away for the price. I’m curious, though: has anyone here tried those acoustic glass units? Wondering if they’re worth it for street-facing rooms or if it’s just more marketing.
Yeah, I hear you—double glazing was a game changer for us too. Honestly, I’ve looked into the acoustic glass thing and it sounds good on paper, but the price just made me laugh. Unless you’re right on a super busy street, I’m not sure it’s worth it. But hey, if noise is driving you nuts, maybe it’s worth a shot.
Funny you mention the price of acoustic glass—when I got a quote for our front windows, I honestly thought they’d added an extra zero by mistake. The thing is, standard double glazing already knocks down a lot of outside noise, especially if you’re not right up against heavy traffic. But there’s a catch: the type of noise matters. Low-frequency stuff, like buses or trucks rumbling by, can still sneak through because even triple glazing sometimes struggles with that.
One thing that gets overlooked is the gap between panes. It’s not just about adding another layer of glass—if the spacing isn’t right, or if both panes are the same thickness, you don’t get much extra benefit. For serious noise issues, you want “laminated acoustic glass” with different pane thicknesses and a special interlayer. That’s where the big bucks come in.
Honestly, unless you’re desperate (or have money to burn), well-installed double glazing with good seals usually does enough for most city homes. Triple glazing is more about insulation than soundproofing in most cases. We ended up just adding heavy curtains in our bedroom and it made a surprising difference... not fancy, but way cheaper than ripping out all the windows.
I ran into the same sticker shock with acoustic glass—makes you wonder if they’re quoting for a whole new house, not just a window! I actually did a bit of DIY research when I renovated our 1950s semi last year. We’re about 20 meters from a pretty busy road, so noise was a big concern. Ended up going with double glazing, but I paid extra attention to the install—making sure the frames were well sealed and the gaps between panes were asymmetric (one pane thicker than the other). That made more of a difference than I expected, especially for the mid-frequency stuff like car engines and people chatting outside.
You’re right about low-frequency noise being tough to block. Even with triple glazing, you can still feel that deep rumble from buses or lorries. I looked into laminated glass too, but the cost was just too much for the whole house. Maybe if I win the lottery... For now, I’ve got secondary glazing in the front rooms, and honestly, it’s pretty effective if you don’t mind the extra bit of maintenance.
Heavy curtains are underrated, in my opinion. We hung some thick velvet ones in the bedroom, and it really took the edge off at night. Not a miracle solution, but for what they cost compared to new windows, it’s hard to argue. If you’re handy, even adding some weatherstripping around existing sashes can help more than you’d think—sometimes it’s those tiny air leaks that let most of the sound through.
Triple glazing seems more useful for keeping heat in (or out) than for noise reduction, unless you’re right next to a train line or something extreme. For most city homes, I’d say well-installed double glazing with decent seals and maybe some heavier curtains gets you 80% of the way there without draining your savings.