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Double vs triple glazing for energy efficiency—worth the upgrade?

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bfire76
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(@bfire76)
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- Totally agree with you on the air sealing—did the same in my 1960s ranch and honestly, it made a bigger dent in drafts than the new windows ever did.
- Looked at triple glazing too, but yeah, the cost just didn’t make sense for my climate (mild winters, nothing extreme).
- Double glazing was a solid upgrade over single pane, but I’d say unless you’re in a super cold spot or have noise issues, triple is probably overkill.
- Kinda wild how much hype there is around windows when the real savings seem to come from plugging up all those sneaky leaks...


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math_kenneth
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(@math_kenneth)
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Funny how folks get fixated on windows when air leaks are usually the real culprit, right? I’ve swapped out a ton of windows for clients, and honestly, unless you’re dealing with crazy winters or street noise, double glazing hits the sweet spot for most. Triple glazing is nice on paper, but in milder climates, it’s hard to justify the price tag. Out of curiosity—did you notice any big difference in comfort or bills after your window upgrade, or was it mostly the air sealing that did the trick?


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ocean973
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(@ocean973)
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- Totally agree on air leaks being the real energy killer.
- Did double glazing a few years back—honestly, didn’t notice a *huge* difference in bills, but the drafts were way less after we sealed up the old frames and gaps.
-

“unless you’re dealing with crazy winters or street noise, double glazing hits the sweet spot for most”

- That’s been true for us. Not sure triple would’ve been worth the extra cash here (mild winters, no busy road).
- If I had to do it again, I’d focus on sealing first, then windows.


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Posts: 12
(@marys86)
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Had a similar journey—spent a weekend crawling around with a smoke pencil and a tube of caulk, and it was wild how many little leaks I found. After sealing those up, the house felt warmer than when I just swapped out the old single panes for double glazing. Honestly, if your windows aren’t ancient, sealing gaps and adding some decent weatherstripping gives you a lot of bang for your buck. Triple glazing always sounded fancy, but unless you’re living in an igloo or next to a highway, I’d rather save the cash for something more fun... like a new drill.


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Posts: 9
(@patthomas471)
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- Totally hear you on the weatherstripping. Did the same last fall—spent a few hours with a caulk gun and some foam, and honestly it made way more difference than I expected.
- Triple glazing always seemed like overkill for my 80s ranch. Unless you’re dealing with crazy cold or constant noise, it’s a lot of cash for a small bump.
- Way easier (and cheaper) to seal up what you’ve got and maybe splurge on better blinds or curtains if drafts are still an issue.
- Triple glazing does look nice on paper, but I’d rather put that money toward a new tool too… or maybe a weekend away.


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Posts: 14
(@maxgolfplayer)
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Triple glazing always seemed like overkill for my 80s ranch. Unless you’re dealing with crazy cold or constant noise, it’s a lot of cash for a small bump.

I agree with this. I ran the numbers for my place (built in '92, mild winters), and the payback period on triple glazing was just too long to justify. Air sealing and adding thick curtains did more for comfort and energy bills than I expected. If I lived somewhere with harsher winters or on a busy street, maybe I’d reconsider, but for now, double glazing plus good sealing seems more practical.


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Posts: 24
(@dance107)
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Air sealing and adding thick curtains did more for comfort and energy bills than I expected.

Right there with you. People tend to think new windows are some magic bullet, but honestly, a good draft blocker and some heavy curtains can do wonders—plus, you don’t have to remortgage the house. Triple glazing is great if you’re in Alaska or next to a freeway, but for most folks, double glazing and some DIY tweaks hit the sweet spot.


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Posts: 48
(@drummer573106)
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- Totally agree, thick curtains and stopping drafts made a bigger difference for us than I expected.
- Upgraded to double glazing a few years back—honestly, the combo with air sealing was what really cut the noise and kept the place warmer.
- Looked into triple glazing, but the price jump was wild. Unless you’re in a super cold spot or have a lot of street noise, it feels like overkill.
- One thing though—if your windows are ancient and leaky, even basic new double glazing will feel like a huge upgrade. But if drafts are the real issue, start there... it’s way cheaper and faster.


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Posts: 8
(@tea_thomas4752)
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I’m with you all on the draft-stopping—seriously underestimated how much cold air was sneaking in until I did a smoke test around my old sashes. Like someone else mentioned,

if your windows are ancient and leaky, even basic new double glazing will feel like a huge upgrade
. That was us: 1960s single-pane, rattling in the wind. Double glazing plus some foam tape made an instant difference.

I ran the numbers on triple glazing too, but for our mild winters, it just didn’t pencil out. The installer even admitted most folks here don’t see payback unless they’re right on a busy road or have north-facing glass everywhere. For us, fixing drafts and adding heavier curtains gave way more bang for the buck than going all-in on triple.


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news_cooper
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(@news_cooper)
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“Double glazing plus some foam tape made an instant difference.”

That’s exactly what I see a lot—folks are surprised by how much those “small” fixes add up. Triple glazing gets hyped, but unless you’re in a spot with brutal winters or nonstop street noise, it’s often overkill. Did you notice any downside with heavier curtains though? I’ve had people mention they block out drafts but also daylight, which can be a pain if you like a bright room. Curious how you balanced that.


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