I get what you’re saying about low-expansion foam, but honestly, I’ve had it crack and pull away after a couple seasons—especially in spots where the house moves a bit. Sometimes old-school backer rod and caulk holds up better for me. Guess it depends on the house.
Funny, I’ve actually had the opposite experience—backer rod and caulk shrank and got brittle in my 1950s place. Maybe it’s our wild temp swings? I started using low-expansion foam around windows, but I always trim it back and add a bead of flexible sealant over the top. Seems to help with movement, though nothing’s perfect. Have you ever tried a hybrid approach like that?
I started using low-expansion foam around windows, but I always trim it back and add a bead of flexible sealant over the top. Seems to help with movement, though nothing’s perfect.
I’ve definitely run into the same thing—backer rod and standard caulks just don’t hold up in older homes with big temp swings. That “shrinking and getting brittle” issue you mentioned is spot on. I have mixed feelings about low-expansion foam, though. It seals well, but if you get too much in there or don’t trim it back enough, I’ve had it push the window frame a bit out of square. Covering it with flexible sealant helps, but I still worry about long-term adhesion.
I’ve tried a hybrid setup similar to yours and it’s worked okay, but I’m still searching for something that doesn’t need attention every couple of years. Honestly, nothing seems truly maintenance-free with these old houses...
- Ran into the frame shift issue with foam too—one window ended up a hair off level because I overdid it.
- Noticed over time, even the flexible sealant starts to peel where there’s a lot of sun exposure.
- Tried the “tape + foam + sealant” combo once, but the tape started to lose adhesion after a couple of winters.
- Wondering if anyone’s had luck with those newer liquid flashing products? Are they actually worth the extra cost, or just another layer to maintain down the line?
- Had the same thing with the foam—one window slightly crooked and now it bugs me every time I walk past. “Measure twice, curse once,” right?
- On the sealant peeling: yeah, sun just eats it. I’m in a spot that gets direct afternoon blast and it’s like clockwork, two years and it starts cracking.
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“Tried the ‘tape + foam + sealant’ combo once, but the tape started to lose adhesion after a couple of winters.”
Same here. The tape was basically confetti by year three. Not sure if it’s just our climate (lots of freeze/thaw) or if the tapes just aren’t up for it.
- Gave liquid flashing a shot on a basement window last fall. Honestly? It went on easier than I expected and seemed to bond well, even around some weird angles. Only downside: price tag stings a bit and it’s messy if you’re not careful.
- Jury’s still out on long-term durability, but so far, no leaks or peeling. If it saves me from redoing tape every few years, might be worth it... unless something new comes along and we’re all back at square one.
“Measure twice, curse once,” right?
That line made me laugh—felt that in my soul. I just finished my first round of window replacements and definitely had a couple “close enough?” moments. The crooked one in our guest room is now my daily reminder to slow down. You’re not alone on the tape either... mine started peeling after two winters, and I blamed it on user error, but maybe it’s just the Midwest freeze/thaw cycle. Liquid flashing sounds tempting, even if it’s messy. Appreciate hearing it’s worked so far—makes me feel a bit better about all the trial and error.
That crooked window will probably bug you for a while, but you’ll start seeing it as a badge of honor after enough time passes. I’ve been in my place for 20+ years, and trust me, there’s always at least one “character-building” project staring back at me. The tape thing—yeah, Midwest winters are brutal. I tried a few brands before just accepting that some years, you’re redoing it whether you want to or not. Did you find the liquid flashing hard to work with, or just messy? I’ve always wondered if it’s worth the cleanup.
Yeah, the crooked stuff starts to blend in after a while—at least until you stare at it too long. About liquid flashing, I found it more annoying than hard. The mess is real, especially if you rush. Did you notice any big difference in draft control compared to just using tape?