- Totally agree, the glass itself is a major culprit for heat loss.
- Did the same IR camera trick last winter—my old windows glowed like a toaster compared to the new ones.
- Triple pane made a bigger difference than I expected, especially during those -20°C nights.
- Only downside? My wallet still hasn’t forgiven me… but at least my toes are warm.
- For anyone in milder climates, might be overkill, but up north it’s a game changer.
Definitely noticed a huge difference after swapping out my old double panes for triple pane last year. The IR camera really opened my eyes—heat loss was way more than I thought, especially around the frames. The upfront cost stings, no doubt, but my heating bills dropped enough that it feels like it’ll pay off eventually. In milder climates, maybe not worth the premium, but up here where winter just drags on... it’s night and day. Only thing I wish I’d done differently? Checked air sealing around the install—tiny gaps can undo a lot of that fancy glass.
Can’t agree more about the air sealing—
—that’s spot on. When I swapped mine, I actually found a few spots where the foam hadn’t expanded all the way. Ended up running a bead of caulk around the trim and it made a noticeable difference, especially on windy days. If anyone’s doing this upgrade, I’d say: after install, go around with a smoke pen or even just a candle to check for drafts before you finish the trim. Little extra effort, but it’s worth it in the long run.tiny gaps can undo a lot of that fancy glass
That’s a great point about the smoke pen—simple tools can really reveal a lot. One thing I’ve noticed is people often assume the window itself will do all the work, but if the rough opening isn’t square or there’s any movement in the framing, you can get those sneaky gaps even after careful install. Have you ever tried backer rod behind the trim before caulking? Sometimes that helps if the gap’s a bit wide. Curious if anyone’s found certain brands of foam that expand more reliably—seems like there’s a lot of variation out there.
Backer rod’s saved me a few times when the gap was bigger than I expected—definitely helps keep the caulk from just sinking in. On foam, I’ve had mixed luck. The “minimal expanding” stuff sometimes barely fills, but the regular kind can get a bit wild and bow the jamb if you’re not careful. Has anyone tried using those tape-style air barriers instead? Wondering if they’re less finicky in older houses where nothing’s square.
I’m in the middle of this too, actually. When I swapped out my old windows for triple pane, I ran into the same weird gaps—nothing was square, and the foam went everywhere. I tried that “minimal expanding” stuff, but honestly, it barely did anything. The regular stuff almost pushed my trim off, so I get what you mean about bowing the jamb.
I haven’t used the tape-style barriers yet, but I did watch a bunch of videos on them. They seem way less messy, especially in older homes where you’re dealing with wonky framing. My only hesitation is whether they actually seal as well as foam when there are bigger gaps. Have you noticed any drafts or cold spots since using them? Or do you double up with backer rod and caulk anyway?
One thing I found helpful was to wedge in the backer rod, then use just a tiny bit of foam—like, really go easy on the trigger. Then I’d finish with caulk once everything cured. It took longer, but I felt like I had more control over the mess. Curious if anyone’s tried a combo of tape plus foam or if that’s overkill...
- Tape barriers are definitely tidier, but for bigger gaps, I still trust foam more.
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I’ve done both on a few windows—tape for the main seal, then a thin bead of low-expansion foam just where the gap got wide. No issues with drafts so far, and the mess was way less.Curious if anyone’s tried a combo of tape plus foam or if that’s overkill...
- Backer rod + foam + caulk is my usual, but on the worst frames, tape helps bridge uneven spots.
- Haven’t noticed any cold spots, but I’m in a pretty mild climate, so not the ultimate test.
- Honestly, as long as you don’t overdo the foam, mixing methods isn’t overkill. Just don’t skip the caulk—makes a big difference in finish and air seal.
Did the triple panes on my last remodel, and honestly, the install details (like you all mentioned—tape, foam, caulk) made just as much difference as the glass itself. Tried mixing tape and foam around some stubborn frames—didn’t find it overkill, but I wouldn’t skip the caulk either, especially for sealing up those weird uneven edges. For me, the biggest improvement wasn’t just thermal, but cutting down on outside noise. Anyone else notice that? Drafts are gone, but the quiet is what really stood out.
That’s interesting—you noticed the noise difference more than the thermal? I just finished my first winter with new triple panes, and honestly, I’m still not sure if the quiet is from the glass or just finally sealing up all those old gaps. Did you find it made any difference in humidity or condensation on the inside? That’s been my bigger headache lately, especially when temps swing.
I actually think the condensation thing is a bit more complicated than most people expect. Triple panes are great for keeping the inside glass warmer, which should *reduce* condensation in theory—but if your house is now way tighter (from sealing up old gaps), you might be trapping more humidity inside. That can actually make condensation worse, especially during those big temp swings you mentioned.
In my place (1970s build, not exactly airtight before), after swapping to triple panes and doing a ton of air sealing, I had to start using the bath fan religiously and even cracked a window once or twice just to keep the humidity down. The noise difference was huge for me too, but I’d say the thermal improvement was only really noticeable during deep cold snaps. Honestly, if you’re still seeing a lot of condensation, you might want to look at ventilation or maybe a small dehumidifier rather than blaming the windows themselves. Sometimes it’s less about the glass and more about how “sealed up” everything else has become.