I get the surprise factor with critters, but honestly, I’m more worried about what that means for energy loss. If mice are getting in behind your window frames, doesn’t that mean there’s a pretty big air gap or some kind of breach in the insulation? I pulled out a couple of my old vinyl windows last fall—not a single mouse nest, but I did find chunks of old fiberglass insulation that had basically collapsed into dust. No signs of animals, but the draftiness explained my sky-high heating bills every winter.
I wonder if the critter problem is more about gaps in the installation than the windows themselves. Did you notice any obvious holes or cracks after you took the frame out? Sometimes it’s less about pests and more about poor sealing from way back when these things went in. I’ve read that even a tiny opening can let both air and small animals sneak in over time... Makes me question whether just swapping out windows is enough, or if it’s worth pulling some trim and really checking all the way around for leaks.
Another thing—if mice were nesting in there, wouldn’t you have noticed some kind of smell or droppings inside at some point? Or do they just stay hidden and out of sight? Maybe I’m overthinking it, but to me, long-term energy loss is a bigger issue than a mouse nest. Sealing everything up tight (with spray foam or backer rod) seems like it’d solve both problems at once.
Curious if anyone’s seen actual improvement in their bills after taking care of this kind of mess. For me, better insulation made a bigger difference than just swapping old vinyl for new ones.
I’m with you on the insulation making a bigger impact. When I pulled one of my old windows, there was this weird gap between the frame and the studs—like, no insulation at all, just empty space. No critters, but a ton of cold air. Did you end up pulling the trim around your other windows to check for gaps, or just fix what you found? Sometimes I wonder if it’s worth the hassle to go window by window, or just bite the bullet and do them all at once.
Sometimes I wonder if it’s worth the hassle to go window by window, or just bite the bullet and do them all at once.
Honestly, I had the same question. I only checked one window so far, found a big gap like you mentioned, and just filled that one. But now I’m second guessing—what if all of them are like that? Did you notice any difference in the room after fixing just one? Not sure if it makes sense to rip into every window or just wait until I have more time...
I ran into the same thing—figured I’d just fix the worst window and see if it made a difference. Honestly, after sealing up that one, the draft in that room dropped off a lot more than I expected. But when I checked the others later, some were fine and some had even bigger gaps. If you don’t have time to do them all, maybe just hit the obvious problem spots first. It’s surprising how inconsistent the install quality can be from window to window...
That’s wild, I noticed the same thing—some of my windows looked like they were installed by a pro, others like someone was just guessing. Did you find any weird surprises behind the trim? I found an old wasp nest in one... kinda makes you wonder what else is hiding in there.
I pulled out a window in my kitchen and found what looked like an old mouse nest, complete with a stash of acorns. Not exactly the kind of insulation I was hoping for. The weirdest part was finding a couple of random screws just floating around behind the trim—like someone just gave up halfway through. Makes you wonder how much of your house is held together by luck and hope... Did you have any water damage or just the wasp situation?
Haha, I totally get the “luck and hope” vibe. When I swapped out my old vinyl windows, I found a weird combo of ancient insulation (think: crumbling newspaper), a petrified wasp nest, and one of those tiny liquor bottles wedged in the framing. No water damage, but I swear half my house is insulated by old critter nests and random builder “shortcuts.” Makes you appreciate modern energy codes, even if retrofitting is a pain.
Makes you appreciate modern energy codes, even if retrofitting is a pain.
Totally agree—modern codes are a headache during install, but at least you know what’s behind the walls now. When I pulled my old vinyls, I found a full bird skeleton wedged in the sill. No joke. Guess it’s better than the time I found an actual squirrel stash of acorns in my attic insulation. I’ll take spray foam and proper flashing any day, even if it costs more up front.
- That’s wild—never thought about what could be hiding in the walls until I started my own window project.
- Totally get what you mean about modern codes being a hassle, but I like knowing there’s less risk of critters or moisture getting in now.
- It’s a pain up front, but having proper insulation and flashing just makes sense long-term.
- Honestly, the upfront cost stings, but I’d rather deal with that than random animal remains or weird surprises later.
the upfront cost stings, but I’d rather deal with that than random animal remains or weird surprises later.
Same. I pulled out one window and found a bird’s nest jammed in the frame—no idea how long it’d been there. Honestly, dealing with codes is annoying, but at least now I know what’s in my walls. Still, the bill for new flashing and insulation made my wallet cry a little. Worth it for peace of mind though... no more mystery smells.