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Where do you even begin with swapping out old windows?

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jackr93
Posts: 7
(@jackr93)
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Shims and patience—couldn’t have said it better. Every time I think, “This’ll be a quick one,” I find a header that’s sagged or a sill that’s seen better days. It’s wild how nothing is ever square in these old places. Air sealing is seriously underrated, too... I’ve had clients tell me their heating bills dropped after we did a careful job with the foam and caulk. Sometimes it feels like you’re rebuilding half the house just to get one window right, but man, that first winter draft-free makes it worth the hassle.


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Posts: 11
(@mochasinger)
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It’s wild how often a “simple” window swap turns into half a day of wrestling with out-of-whack framing or old rot. I swear, the more you peel back, the more weird stuff you find—like those random wood shims from the 50s that crumble if you look at them sideways. Air sealing definitely doesn’t get enough attention, either. I’ve had folks call me up months later just to say their house finally feels warm for once.

I do wonder, though—when you run into a header that’s sagged or a sill that’s seen better days, do you always rebuild it right then, or do you ever just patch and move on? Sometimes I get pushback from clients who don’t want to pay for extra carpentry, but skipping it always feels like asking for trouble down the road. On the flip side, rebuilding everything can snowball fast, especially in these old houses where nothing is standard size.

Curious how others balance doing it “right” versus keeping budgets in check. Do you have a threshold where you say nope, gotta tear out and rebuild? Or do you try to work with what’s there as much as possible? I’ve gone both ways depending on how bad things look (and whether I think the client will actually notice), but sometimes I wonder if there’s a better approach.

Also—anyone else notice that some of the newer foams don’t stick well to old, dusty wood? I’ve started wiping everything down first but it adds time. Maybe I’m overthinking it...


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marley_anderson
Posts: 17
(@marley_anderson)
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Man, you nailed it—old houses are like a box of chocolates, except half of them are rotten and the rest are just weird sizes. I’ve definitely had those “just patch it” moments, especially when the client’s eyes start glazing over at the mention of new headers. But if a sill’s mushy or the header’s sagging enough to make me nervous, I’m pulling out the sawzall whether they like it or not. Learned that lesson after one too many callbacks.

And yeah, those foams... I swear they’re allergic to dust. I’ve tried blasting with compressed air but then you’re just moving dust around. Ever run into old lead paint when you’re cleaning up? That’s a whole other can of worms.


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Posts: 10
(@mindfulness_jerry)
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But if a sill’s mushy or the header’s sagging enough to make me nervous, I’m pulling out the sawzall whether they like it or not.

I get the urge to just tear out anything that feels sketchy, but I’ve started taking a slower approach, especially on these old houses where you don’t really know what’s hiding behind the next board. Sometimes I’ll poke around with a screwdriver or even a stiff putty knife first—just to see how bad it is—before I commit to cutting things out. Had one job where I thought the sill was toast, but it turned out only the outer inch was punky. Ended up scarfing in a patch instead of replacing the whole thing, saved a ton of hassle and kept more of the original wood.

On the foam and dust—totally agree that compressed air just blows the mess around. I’ve had better luck with a HEPA vac and brushing as I go, especially if there’s any chance of lead paint lurking. If you hit lead, you’ve got to slow way down... plastic sheeting everywhere, keep it damp, all that jazz. It’s a pain but better than risking your lungs or someone else’s.

Sometimes I wonder if these old windows are trying to tell us something about patience.


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donnaw59
Posts: 12
(@donnaw59)
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Sometimes I wonder if these old windows are trying to tell us something about patience.

That’s a smart way to go about it—sometimes the urge to demo everything can actually create more headaches, especially in these old places where every board seems to be holding something else together. I’ve definitely had jobs where a gentle poke with a screwdriver told me all I needed to know, and like you said, sometimes “only the outer inch was punky.” That’s a huge difference from a full replacement.

I’m with you on the lead paint precautions. Even if it feels like overkill, you never really know what’s lurking under those layers until you start disturbing things. I’ve run into spots where just sanding without proper containment would’ve been a disaster. HEPA vacs and keeping things damp are non-negotiable for me now.

Patience is key with these windows, no question. Rushing usually means more repairs down the line or losing details that give an old house its character. Ever tried using epoxy consolidant for minor rot? Sometimes that saves even more of the original wood, though it’s not always practical if the damage goes deep.


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minimalism549
Posts: 9
(@minimalism549)
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You nailed it about patience—there’s just no shortcut with these old windows, especially if you care about keeping the original look. I’ve used epoxy consolidant a bunch, and honestly, it’s a game-changer for shallow rot. But I do wonder sometimes if it ends up being more work than just scarfing in a new piece of wood, especially on sills that catch a lot of water. Ever run into spots where the epoxy seemed fine at first but didn’t hold up after a couple freeze-thaw cycles? That’s happened to me once or twice, mostly on north-facing sides.

And yeah, lead paint is always lurking... I always remind folks to check around the pulley pockets and stops—those are sneaky spots for dust. It’s wild how much you learn poking around these old frames.


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Posts: 5
(@shadow_fox6647)
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Yeah, I’ve seen epoxy fail on those shady, damp sides too—especially if the prep wasn’t perfect or there was hidden moisture. For deep rot or sills that get hammered by rain, I’m way more likely to just cut in fresh wood. It’s more work up front, but honestly, it holds up better long-term in my experience. And you’re spot on about those pulley pockets—found a ton of lead dust hiding out in there on a 1920s house last fall... always an adventure with these old frames.


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dennis_coder
Posts: 7
(@dennis_coder)
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Pulley pockets are wild—last time I opened one up, it was like a time capsule of dust and old paint chips. I hear you on just cutting out the rot and going with new wood. Epoxy seems great until you realize your window’s on the north side in the shade, and that stuff never quite sets right… been there, done that. Honestly, sometimes I wonder if these old houses are just testing how stubborn we are.


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baking989
Posts: 14
(@baking989)
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- Totally get the stubborn-old-house vibe.
- Pulley pockets are like a black hole for energy loss, too—have you tried air sealing after fixing them?
- Epoxy's kind of hit-or-miss for me as well, especially in cold, shady spots.
- Swapping to new wood can help, but sometimes I wonder if adding a weatherstrip does more for drafts than all that patching...
- You're not alone—sometimes it feels like these houses test every trick we know.


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Posts: 28
(@boardgames_katie)
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- Totally agree, weatherstripping made a bigger difference for me than all the wood filler and epoxy ever did.
- Pulley pockets are a pain—stuffed mine with insulation, helped a bit.
- Honestly, some days it feels like you fix one draft and three more pop up. Hang in there, it gets better... eventually.


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