Rain sneaking in around my window - caulk or weather stripping?

Had something similar happen last spring. Spent hours sealing around the window, convinced I'd nailed it. Next storm, water still trickling in. Turned out the gutter above was overflowing just enough to drip behind the fascia, run down behind the siding, and pop out at the window. Fixed the gutter slope and problem solved. Ever checked if your gutters are draining properly or if there's any sagging spots?

"Ever checked if your gutters are draining properly or if there's any sagging spots?"

Good point - gutters are sneaky like that. Had a similar mystery leak last fall, turned out leaves had clogged the downspout just enough to back up water during heavy rain. Cleared it out and added one of those cheap gutter guards... no issues since. Might wanna peek at the flashing above the window too, sometimes water finds its way in behind there.

Gutters are definitely culprits, but I'll throw something else into the mix - window trim. Had a pesky leak myself last year, spent ages fiddling with gutters and flashing, only to realize the window trim had tiny gaps letting rain sneak in behind the siding. A quick bead of caulk around the trim edges did wonders.

Also, if your house has vinyl siding, give it a gentle tug around the window frame - sometimes those sneaky little channels behind the siding can funnel water right where you don't want it. Learned that one the hard way after a weekend of head-scratching and cursing at clouds...

Just saying, might save you some frustration (and soggy drywall) if gutters aren't your issue. Good luck tracking it down!

Good call on checking the trim - it's surprising how often those tiny gaps cause big headaches. Caulk is usually my go-to for sealing around window trim, especially if you're dealing with vinyl siding. Weather stripping is more for movable parts like window sashes or doors, so it probably won't help much here.

One thing I'd add: make sure you're using a quality exterior-grade silicone or polyurethane caulk. Acrylic-based stuff tends to crack or shrink over time, especially in areas exposed to direct sunlight or temperature swings. Learned that lesson after revisiting a job I thought I'd nailed perfectly...only to find cracks a year later.

Also, don't forget to check the flashing above the window. Even a small bend or gap there can channel water behind your siding and trim. I've seen plenty of cases where homeowners sealed everything around the window beautifully, but missed a sneaky flashing issue higher up.

Anyway, sounds like you're on the right track - just keep an eye out for those sneaky little details. Good luck!

Good tips here, especially about the flashing - hadn't thought to check that yet. Quick question though: is there a trick to neatly applying silicone caulk? Last time I tried, it got messy real fast...

Been there myself, silicone can quickly turn into a sticky mess if you're not careful. A trick I learned the hard way: always use painter's tape on both sides of the joint first - it sets clear boundaries and makes cleanup way easier. After applying a thin bead, wet your finger with a bit of dish soap and water, then smooth it gently in one continuous motion. Peel off the tape right away, before the caulk sets. Trust me, saves a ton of headache later...

"Peel off the tape right away, before the caulk sets."

Wish I'd read this earlier - I left the tape on overnight thinking it'd be cleaner, and ended up peeling off chunks of dried silicone. Lesson learned, I guess... Does weather stripping have similar pitfalls?

Weather stripping's a bit different - no tape drama, but it's got its quirks too. Main issue I've run into is adhesive backing not sticking well if the surface isn't spotless or dry enough. Had one job where I rushed cleaning the window frame and ended up with weather stripping peeling off after a couple weeks. Prep thoroughly, make sure it's bone dry, and press firmly along the entire length...should hold up fine after that.

Had a similar issue with weather stripping last year. Even after prepping thoroughly, moisture still got in behind it somehow. Ended up switching to silicone caulk - bit messier, but it sealed perfectly and hasn't leaked since. Might be worth considering if stripping gives you trouble.

Interesting you mention silicone caulk - I had a slightly different experience. A couple years back, I sealed around my windows with silicone thinking it'd be a permanent fix. Worked great at first, but after a year or two, it started peeling away in spots, especially where the sun hit hardest. Maybe it was just the brand I used or my application technique, who knows... but it made me reconsider weather stripping again.

Ended up going back to stripping, but this time I chose a higher-quality foam tape and spent extra time making sure the surface was spotless before applying. Surprisingly, it's held up pretty well through some heavy storms. Makes me wonder if sometimes it's less about the product itself and more about prep and quality?

Not knocking silicone entirely - just sharing that it wasn't the magic bullet for me. Maybe climate or window material plays a bigger role than we think?

Your experience sounds pretty familiar. I've found silicone caulk can be hit or miss depending on the surface and conditions. A few years ago, I sealed around my patio door with silicone, and it held up great on the shady side but peeled badly on the sunny side after just one summer. I think UV exposure really does a number on certain silicones.

Funny enough, I switched to foam tape too, but noticed it compressed and lost its seal after a while in high-traffic areas. Ended up trying rubber weather stripping instead - it's pricier but seems to handle wear and tear better.

Makes me wonder if anyone else has noticed differences based on window orientation or sun exposure? Maybe certain products just aren't built for direct sunlight...

I've definitely noticed a similar pattern with silicone caulk. A couple years back, I sealed some windows on the west side of my house (they get blasted by afternoon sun), and sure enough, within about a year, the caulk was cracking and peeling. Meanwhile, the north-facing windows stayed perfectly sealed - go figure.

Rubber weather stripping has been a winner for me too, especially around doors that get opened and closed constantly. It just seems more durable overall. Foam tape worked okay at first, but I found it flattened out pretty quickly in spots where there's frequent use or pressure.

Honestly, it seems like sun exposure is a bigger factor than most of us realize. Maybe manufacturers could be clearer about UV resistance on their packaging...would save us all some trial and error. Glad I'm not the only one who's had to experiment a bit to find what works best!

Had the exact same issue with silicone caulk on my south-facing windows. Switched to polyurethane-based sealant - bit messier to apply, but it's held up way better against UV and weather. Might be worth a shot if you're still experimenting...

Yeah, polyurethane sealant definitely holds up better - learned that the hard way myself. But is it just me, or does anyone else find it impossible to apply neatly without getting it everywhere? Maybe I'm just caulk-challenged...

Polyurethane definitely has its strengths, but honestly, neat application isn't as impossible as it seems. The trick is all in prep and patience - masking tape is your best friend here. I used to dread the mess too, until I started taping off the edges and smoothing with a damp finger dipped in soapy water. Weather stripping can be great too, especially if you want something easier to handle, but it won't seal as permanently as polyurethane. Depends on how often you wanna revisit the issue, I guess...

"The trick is all in prep and patience - masking tape is your best friend here."

Couldn't agree more on the masking tape tip. I'd add that choosing the right polyurethane matters too - some types are messier or harder to smooth out than others. Personally, I've found that a good quality silicone-based caulk (especially one labeled for windows and doors) works wonders. It's flexible enough to handle temperature shifts without cracking, and it's easier to apply neatly. Weather stripping's handy, but long-term sealing usually means caulk or polyurethane...

Good points all around. Masking tape definitely saves headaches - I learned that the hard way after spending an hour scraping dried caulk off my window frame. Silicone-based caulk has been my go-to as well, especially since it stays flexible and handles weather shifts better. Polyurethane can get messy fast if you're not careful, and cleanup is a pain.

One thing I've wondered about though - do you guys ever use caulk smoothing tools, or just stick to the old "wet finger" method? I've tried both with mixed results. Sometimes the smoothing tools give a cleaner finish, but other times they seem to drag the caulk around and make things worse... Maybe I'm just using them wrong, haha.

I've had mixed luck with those smoothing tools too - sometimes they're great, other times they just smear everything around. Honestly, the wet finger trick usually works best for me. Curious though, anyone tried using dish soap or something similar to help smooth it out?

I've never tried dish soap personally, but I have a feeling it might mess with the caulk's adhesion. I mean, dish soap is designed to break down oils and residues, right? So maybe it could leave some kind of film behind that prevents the caulk from sealing properly. Just speculating here though...

Honestly, I've had better luck using painter's tape on both sides of the joint. Takes a bit longer to set up, but it gives you a super clean line without the smearing headache. Smooth it out quickly with a damp finger (no soap!), then peel off the tape before it dries completely - comes out looking pretty professional.

Also, if rain's sneaking in consistently, I'd double-check if weather stripping might be the better option instead of just caulking. Caulk can crack or pull away over time, especially if there's movement or temperature swings. Weather stripping is usually more forgiving for windows and doors that see regular use or shifting. Just my two cents from dealing with similar issues at my place.

Painter's tape trick works great, but have you checked if the window frame itself is shifting or warped? Sometimes even the best caulk or weather stripping won't help if the frame's outta whack...might be worth a quick look.