if you’re aiming to keep the original look and feel, custom is tough to beat.
I get that, but I’ve actually been pretty surprised by some of the higher-end factory options lately. Maybe I just lucked out, but my 1915 foursquare got Marvin wood windows a couple years back and—honestly—the profiles matched up way closer than I expected. Not perfect, but unless you’re right up on them, it’s hard to spot. The lead time was way shorter too, which helped since my living room was basically a wind tunnel.
Custom is great if you’ve got the budget and patience, but I wouldn’t write off all factory stuff, especially if you can see samples in person first. Sometimes “good enough” really is good enough, at least for me.
Sometimes “good enough” really is good enough, at least for me.
Yeah, I hear you. For me, the big thing is how much the new windows actually help with drafts and heating bills. Did you notice a difference after swapping to the Marvins? Curious if the insulation boost was worth it.
the big thing is how much the new windows actually help with drafts and heating bills
That’s the million-dollar question, honestly. I’ve put in a few sets of Marvins for clients, and while they’re definitely tighter than the 80s-era single panes, I wouldn’t say it’s night and day. If your old frames are shot or you had obvious gaps, sure, you’ll feel a difference. But if the originals were halfway decent and you just wanted “better,” sometimes the payoff isn’t as dramatic as folks hope—especially for what Marvins cost.
I always tell people: insulation around the window is just as important as the window itself. You can drop big money on new units, but if the installer skimps on sealing or you’ve got leaky walls, your bills won’t budge much. Honestly, I’ve seen storm windows plus some careful weatherstripping do almost as much for draftiness, at a fraction of the price.
Not knocking Marvins—they’re solid—but I’m just not convinced they’re a magic bullet for old house energy woes. Anyone else find that, or did you get a bigger boost?
insulation around the window is just as important as the window itself
Couldn’t agree more. I swapped out the original sashes in my 1920s place for new wood windows (not Marvins, but similar price bracket), and honestly, the biggest difference came after I addressed the gaps in the framing and added proper spray foam. Before that, even with “good” windows, I still felt drafts. The window itself is only one part of the equation—if the rough opening isn’t sealed up tight, you’re just throwing money out the wall. I think a lot of folks underestimate how much air leaks around, not through, the glass.
Couldn’t have said it better myself. You can drop a small fortune on high-end windows, but if the insulation around them is half-baked, you’ll still feel that winter breeze sneaking in. I’ve pulled out plenty of “premium” units where the homeowner swore something was wrong with the window, only to find daylight peeking through gaps in the framing. It’s always a bit of a facepalm moment.
Spray foam’s great for air sealing, but I’ve seen folks get carried away and warp the jambs by overfilling. There’s a sweet spot—enough to block drafts, not so much you can’t open your window. Back in my apprentice days, the old-timers used to joke that most of the heat loss in a house comes from “contractor optimism”—assuming the next guy will seal it up right.
Funny thing, I’ve noticed that even some newer builds skip proper insulation in the rough opening. You’d think we’d have learned by now. In older homes, especially with those deep plaster walls, you can’t just slap in a modern window and call it done. Sometimes you find old newspaper stuffed in the cavity... or nothing at all.
Anyway, hats off for tackling both the window and the surrounding insulation. It’s not glamorous work, but it makes all the difference. If more folks realized how much energy (and money) leaks out around the frame, I think we’d see a lot fewer complaints about “bad windows.” Sometimes it’s not the glass—it’s what’s hiding behind the trim.
Yeah, it’s wild how much of a difference the stuff you can’t see makes. I spent way too long blaming my old windows for drafts, but after popping off the trim, turns out there was basically a wind tunnel around the frame. Whoever thought a handful of crumpled receipts counted as insulation must’ve been an optimist. Is there a trick to getting the right amount of spray foam? I’m a little worried about gluing the sash shut or something dumb like that...
I ran into almost exactly the same thing when I started redoing my upstairs windows—thought the sashes were warped, but nope, just a ton of air sneaking around the frame because whoever installed them barely bothered with insulation. I found old newspaper from the 70s jammed in there, which was kind of fun to read but not great for keeping out drafts.
About spray foam: I’ve definitely made the mistake of overdoing it and accidentally bowing a frame out of square. The trick that worked for me is using the low-expansion stuff specifically labeled for windows and doors. I shake the can really well, then do a light bead all around—think less is more here. If you can still see daylight in spots after it cures, you can always add a little more. And yeah, keep it away from any moving parts or you’ll be chiseling foam off your sash tracks for days... not my proudest moment.
I’m curious if anyone’s tried those rope caulk kits too? They look less messy but maybe not as effective long-term.
I tried the rope caulk one winter because I got tired of scraping frozen foam off my hands. It’s definitely less messy, but I found it started to peel away after a few months—maybe I just didn’t press it in hard enough? It did help with drafts though, at least while it lasted. I still think nothing beats proper foam or backer rod for long-term, but for a quick fix, rope caulk’s not too bad. Anyone else have it actually stick for a whole season?
Rope caulk’s always felt like a bit of a gamble for me too. I’ve had it hold up for a whole winter, but only when I really warmed it up in my hands and pressed it in deep. Even then, by spring it was starting to sag in spots. Have you tried using it on wood windows that have been freshly painted? I’ve noticed it tends to peel faster if the paint’s not fully cured. Foam’s a pain, but yeah, lasts way longer if you can put up with the mess. Curious if anyone’s found a brand of rope caulk that sticks better than the rest...
Funny, I’ve actually had the opposite luck—rope caulk’s been more reliable for me than foam. Maybe it’s just the brand or my windows are weirdly forgiving? I’ve got 1920s double-hungs and the foam always seems to expand just a hair too much, making it tough to open the sashes come spring. Rope caulk, on the other hand, is a bit fussy when it’s cold, but if I knead it enough and really jam it into the gaps, it stays put until I pull it out in April.
I do agree about the paint thing though—if there’s even a hint of tackiness left, the caulk just slides right off. Learned that one the hard way... ended up with sticky gray streaks on my white trim. Haven’t noticed a huge difference between brands, honestly. They all seem to be about the same level of mediocre. Maybe it’s just one of those “pick your poison” situations with old wood windows.