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

I get why caulk might seem like the best long-term solution, but honestly, weather stripping can still be useful depending on the situation. Had a similar issue with one of my windows - rain trickling in during heavy storms. I put in some quality weather stripping as a temporary fix, thinking I'd have to redo it eventually with caulk, but it's held up for nearly two years now. Maybe it's luck, or maybe it depends on how severe the leak is...but don't discount weather stripping entirely just yet.

Interesting point - weather stripping can definitely surprise you sometimes. I'm curious, did you notice any difference in insulation or drafts after installing it compared to caulk? I've heard mixed opinions on thermal efficiency between the two methods...

Good point about weather stripping - I've found it surprisingly effective myself, especially for drafts. In my experience, caulk is great for sealing stationary gaps and preventing water intrusion, but it doesn't handle movement or shifting very well. Windows and doors naturally expand and contract with temperature changes, and that's where weather stripping really shines. It flexes with the frame, maintaining a consistent seal.

When it comes to thermal efficiency, I've noticed weather stripping does a better job at blocking drafts, which directly improves insulation. Caulk can help too, but it's more about sealing small cracks and preventing moisture entry rather than significantly boosting insulation. Ideally, you'd use both methods together - caulk for permanent sealing around the frame, and weather stripping for the moving parts. That's been my go-to approach, and it's worked reliably through several winters now.

"Ideally, you'd use both methods together - caulk for permanent sealing around the frame, and weather stripping for the moving parts."

That's a solid suggestion, but from my recent experience, sometimes weather stripping alone isn't enough if you're dealing with heavy rain. I had a similar issue last spring - water kept sneaking in even after installing new weather stripping. Eventually, I found that adding drip edges or flashing above the window made a huge difference. Might be worth considering if the problem persists despite sealing efforts...

Good call on the drip edges - I see that a lot. Sometimes folks overlook the exterior trim too...if it's not angled right or sealed properly, water can still find its way in no matter how much weather stripping you slap on. Did you check if your window trim has proper slope away from the house? Could save you some headaches later.

Yeah, good point about the trim angle...I've seen water sneak past perfectly good caulk just because the trim wasn't sloped out enough. Ever check if there's flashing behind that trim too? Sometimes builders skip it, and that's another sneaky spot water loves to find.

"Ever check if there's flashing behind that trim too? Sometimes builders skip it, and that's another sneaky spot water loves to find."

That's a solid observation. Flashing is often overlooked, especially on older homes or quick builds. I've even seen situations where flashing was installed incorrectly - like placed behind the house wrap instead of in front - rendering it basically useless. Might be worth gently prying back a small section of trim to see what's actually there...could save you headaches down the road.

Good points all around. I've definitely run into flashing issues myself - once found it installed upside-down, believe it or not.

"Might be worth gently prying back a small section of trim to see what's actually there..."

Agreed, but before pulling trim, maybe try checking from inside first? Sometimes you can spot water stains or dampness around the window framing indoors without disturbing exterior trim. Has anyone here had luck pinpointing leaks from the inside first, or is exterior inspection usually the way to go?

Had a similar issue last spring - noticed a faint water stain on the drywall around the window frame from inside first. Thought it was minor, but when I finally checked outside, the caulking was practically gone in one corner. Interior clues can help, but honestly, exterior inspection usually gave me clearer answers. Maybe start inside, but don't skip checking outside thoroughly...

Good catch on checking outside first - honestly, interior signs can be sneaky and misleading. I've seen plenty of cases where the drywall stain looks minor, but behind it, things are already getting messy. Exterior caulking is usually the culprit, but don't overlook weather stripping either. Had a client once who replaced all the caulk only to find out later that worn-out weather stripping was letting water seep in during heavy storms. Better safe than sorry...check both carefully before deciding your next move.

"Had a client once who replaced all the caulk only to find out later that worn-out weather stripping was letting water seep in during heavy storms."

Yeah, weather stripping can be sneaky like that. Have you checked if the window frame itself might be warped or damaged at all? Sometimes that's the hidden culprit behind persistent leaks...

"Sometimes that's the hidden culprit behind persistent leaks..."

Could be, but honestly, I've seen situations where the flashing above the window was improperly installed or damaged. Had a similar issue myself - spent ages on caulk and stripping before realizing water was sneaking in from above...

"spent ages on caulk and stripping before realizing water was sneaking in from above..."

Yeah, that's a good point. I've run into something similar myself - homeowner swore it was the caulking, but turns out the siding above had warped just enough to channel rainwater right behind the window frame. Caulk won't fix that. Honestly, before you spend more time sealing things up, might wanna check what's happening higher up...could save you some headache later.

That's spot on, actually. Had a similar issue last spring - thought it was the window seal failing, but turned out the flashing above was installed wrong and funneling water straight down behind the siding. Have you checked if there's proper flashing or drip edge above your window? Sometimes builders skimp on that stuff, and no amount of caulking or weather stripping will fix it... learned that the hard way myself.

Good point about the flashing - it's often overlooked. But before jumping to conclusions, have you considered the possibility of condensation rather than direct water intrusion? I had a similar issue a couple of winters ago and spent ages chasing down leaks that weren't actually there. Turned out the humidity inside was too high, causing moisture to collect around the window frames and drip down, mimicking a leak. A simple humidity gauge helped me pinpoint it. Not saying that's definitely your issue, but it's worth ruling out before you start pulling siding or flashing apart. Have you noticed if the problem gets worse during colder weather or after running showers or cooking? Sometimes these things aren't as straightforward as they seem...

That's a solid point about condensation - seen it plenty of times myself. But I'd still lean toward checking the flashing first, especially if the issue pops up mostly during heavy rain or wind-driven storms. Had a client last fall who swore up and down it was humidity because the problem seemed worse after showers and cooking. We spent a good week chasing our tails with humidity gauges and dehumidifiers, only to find out later that the flashing had been improperly installed during a window replacement. Water was sneaking in behind the siding and pooling around the frame, causing exactly the symptoms you're describing.

Not saying condensation isn't possible - it definitely is - but don't underestimate how sneaky water intrusion can be. Flashing issues can mimic condensation pretty convincingly, especially if the leak is small or intermittent. I'd suggest starting with a careful visual inspection outside before you dive into tearing things apart...trust me, your siding (and wallet) will thank you later.

"Not saying condensation isn't possible - it definitely is - but don't underestimate how sneaky water intrusion can be."

Yeah, totally agree here. Ever tried the garden hose test? I've had luck pinpointing sneaky leaks by gently spraying around windows from outside while someone watches inside. You'd be surprised how often a tiny gap in flashing or caulk lets water creep in. Condensation's tricky too, but if it's mostly during storms...I'd bet on an exterior issue first. Worth a shot before you start ripping things apart, right?

Garden hose test is handy, but honestly, I've had times where it didn't catch the leak. Sometimes wind-driven rain hits angles you just can't replicate with a hose. Might need to watch during an actual storm to really nail it down...

Had a similar issue on a client's house last fall. We ran the hose test twice - nothing showed up. Then a week later, a storm blew in from an odd angle and water started dripping right in. Turned out the flashing above the window was slightly bent, letting wind-driven rain sneak behind the siding. Sometimes you just gotta wait for nature to show you exactly what's going on...

Had pretty much the same thing happen to me. Caulked around the window twice, still leaked when the wind blew just right. Finally climbed up and checked the flashing - sure enough, it was slightly lifted on one side. Bent it back down, sealed it properly with some roofing sealant, and that did the trick. Caulk or weather stripping won't always help if water's sneaking behind siding or trim from above. I'd suggest checking above your window carefully - especially the flashing and any nearby siding joints. Sometimes the source isn't obvious until you get up close and personal with it...