I’m trying to decide between double and triple glazed windows for a home reno, and I keep reading about how the “heat loss rate” (that U number thing) is better with triple. But is it really worth the extra cost? Does anyone actually notice a difference in comfort or bills, or is it more about bragging rights? Curious what folks here have picked and why.
Title: Comparing window insulation: double vs triple glazing
- Did a full reno last year and went with double glazing. My main reasons: cost and diminishing returns.
- Triple glazing definitely has a lower U-value, but honestly, I haven’t noticed a huge difference in warmth or bills compared to my old place (which had decent double glazing).
- The extra weight of triple can mean beefier frames and sometimes trickier installs.
- If you’re in a super cold climate or right by a noisy road, maybe worth it. Otherwise, I’d say double does the job for most folks.
- Curious—are you in an area with extreme temps or more moderate weather? That can really tip the scales.
The extra weight of triple can mean beefier frames and sometimes trickier installs.
That’s something I keep running into, too. When I was pricing out windows for my build, the installer warned me triple glazing could mean swapping out some of my planned window sizes just because of the weight. I get the lower U-value is tempting, but unless you’re battling serious cold, double seems like the sweet spot. Anyone actually notice a real-world difference in condensation or noise between the two? That’s the only thing that still makes me wonder.
Comparing Window Insulation: Double vs Triple Glazing
I’ve run into the same issue with weight and frame sizing on a few projects. The first time I spec’d triple glazing, it was for a client who was dead set on passive house standards. We had to beef up the framing, and even then, some of the larger window units needed extra hands just to get them in place. It definitely made the install more complex than I expected.
On the condensation front, I’ll say this—triple glazing does seem to help, but only in really cold climates. I’ve seen less frost buildup on the inside pane in winter, but in most moderate areas, double glazing does just fine. As for noise, honestly, the difference isn’t night and day unless you’re near a highway or airport. Sometimes I wonder if the added cost and hassle are worth it unless you’re going for ultra-high efficiency or have specific needs.
Curious if anyone’s actually regretted going with double over triple after living with it for a while...
It definitely made the install more complex than I expected.
COMPARING WINDOW INSULATION: DOUBLE VS TRIPLE GLAZING
That’s a good point about the install being trickier with triple glazing—I hadn’t really considered the weight side of things. I’ve only ever put in double glazed myself, mostly because the budget was tight and our winters aren’t brutal. Honestly, I can’t say I’ve ever wished I’d gone triple. The house feels comfortable, and our bills are manageable. Maybe if I lived somewhere with harsher winters, I’d rethink it, but for now, double seems to do the trick.