Tried silica gel packs for foggy windows - worth it or just a gimmick?

once that seal goes, the window’s basically on borrowed time

That’s been my experience too, unfortunately. I tried the pro reseal thing on one window a few years back - cost me almost as much as a new sash and it still fogged up again after about 18 months. Not sure if it’s just my luck or if these fixes are just fancy band-aids. Has anyone actually had a resealed window last longer than a couple years? Or is it just delaying the inevitable?

- Tried the silica gel packs trick in two of my old double-pane windows last winter.
- Honestly, didn’t see much difference. First month or so, the fog cleared up a bit, but after that... right back to cloudy.
- I get the idea behind it - absorbing leftover moisture - but once the seal’s shot, moisture just keeps coming in.
- Resealing was about the same for me. Paid for a “professional fix” and it looked great at first, but by the next summer, same fog. I kind of regret not just biting the bullet and replacing the sash.
- Only window that’s stayed clear is the one I replaced completely. Not cheap, but at least it’s holding up.
- Anyone tried those defogging companies that drill a tiny hole and suck out the moisture? I keep seeing ads but can’t tell if it’s another temporary fix or actually worth a shot.
- For now, I just live with the fog on the ones I haven’t replaced. At this point, feels like any fix is just buying a little time, not really solving the problem.

At this point, feels like any fix is just buying a little time, not really solving the problem.

Honestly, that’s been my experience too. I tried the silica gel thing last year after seeing a hack online - stuck a couple packs in the bottom corner of my worst window. For about three weeks it looked like I was onto something, then the clouds rolled right back in. I even tried “recharging” the packs in the oven, but it was just a cycle of hope and disappointment.

The defogging service you mentioned (with the tiny hole and suction) came to my neighborhood recently. My neighbor gave it a shot on two windows - looked great for maybe six months, but by winter he had fog creeping back. He joked it was like giving his windows a spa day...nice while it lasted.

I finally replaced one sash last fall and that’s been crystal clear ever since. Not cheap, but sometimes you just want to see out of your own house without feeling like you’re living inside a cloud. If you’re handy, swapping out just the sash isn’t as intimidating as it sounds - took me an afternoon and some patience (and a few YouTube videos).

Short version: if you’re tired of playing whack-a-mole with moisture tricks, replacement seems to be the only real long-term answer.

Yeah, that pretty much lines up with what I’ve seen. Silica gel is like putting a tiny band-aid on a leaky roof - might slow things for a bit, but you’re not fixing the actual problem. Foggy windows usually mean the seal’s shot, so unless you magically reseal the glass (spoiler: you can’t), moisture will just keep sneaking back in.

I tried the defogging “miracle” too, mostly out of curiosity. They drilled the little holes and everything looked clear...for maybe four months? Then it was back to living in a fish tank. Honestly, I think those services are fine if you’re desperate to stretch things another season, but long-term they’re just delaying the inevitable.

Biting the bullet and replacing the sash or even just the IGU (insulated glass unit) made the biggest difference for me. Not cheap, but my heating bill dropped a bit too, which helped soften the blow. If you’re handy and have patience for wrangling old trim, it’s not as scary as it sounds. Sometimes it’s worth just solving it once and being done - less tinkering, more actual daylight.

Couldn’t agree more about silica gel being a stopgap. I had the same experience - tried the packs, got maybe a few weeks of slightly less fog, then it crept right back in.

“Honestly, I think those services are fine if you’re desperate to stretch things another season, but long-term they’re just delaying the inevitable.”

Sometimes the up-front pain is worth skipping all the little “fixes” that never last.

Totally relate to this. I tried the silica packs too, hoping for a cheap fix, but honestly it just felt like putting off the real solution. The cost of replacing the IGU stings, but the comfort difference is hard to ignore. If you’re already working on the trim, it’s almost a no-brainer.

I get what you’re saying - those silica packs are kind of like putting a band-aid on a leaky pipe. I tried the “drill and fill” method once, thinking it’d buy me some time, but the fog just came back after a few months. Replacing the IGU was a pain and definitely not cheap, but the difference is night and day, especially in winter. Out of curiosity, did you notice any drafts or temp swings before you swapped yours out? Sometimes it’s hard to tell if it’s just the fog or if there’s more going on with the seal.

Sometimes it’s hard to tell if it’s just the fog or if there’s more going on with the seal.

That’s exactly what I’m trying to figure out with mine right now. My windows started fogging up last fall, and honestly, at first I thought it was just the humidity or maybe someone left a window cracked. But then I noticed that area of the room felt colder, especially in the mornings. Not a full-on draft, but definitely a chillier vibe compared to the rest of the house.

I tried those silica gel packs too - just tossed a couple in the sill, kind of hoping for a miracle. No dice. The fog cleared for like a day and then came right back once it got cold again. I haven’t done the “drill and fill” thing (was tempted, but I’m not too handy), but reading your experience makes me think it’s probably not worth the hassle if the seal’s shot.

Honestly, I’m starting to suspect the seal is toast. The temp swings are subtle, but they’re there. Windows are original to the house (built in ‘97), so maybe it’s just their time. Still, not looking forward to shelling out for new IGUs...

I tried those silica gel packs too - just tossed a couple in the sill, kind of hoping for a miracle. No dice. The fog cleared for like a day and then came right back once it got cold again.

That’s pretty much what I’ve seen too - silica gel’s fine for pulling a bit of moisture if you’ve got a minor humidity thing, but once the seal’s failed, it’s just treating the symptom. You nailed it with the temp swings being a clue. If you’re feeling that area is colder (even if it’s subtle), usually means the insulating gas between panes is gone, so the window’s not really doing its job anymore.

I get the hesitation on “drill and fill.” I tried it on one window a few years back - honestly, it was more hassle than it was worth, and the fog came back after a while anyway. Sometimes it buys you a season or two, but if your windows are original from ’97, they’ve probably done their time.

Curious - have you noticed any condensation or mold around the frame itself? Sometimes that’s another sign things are going south.

Yeah, I’ve had the same luck with silica - it’s a short-term patch at best. Once that seal’s toast, it’s basically game over for the insulating properties. I tried the “drill and fill” too, just out of curiosity (and stubbornness), but honestly, the foggy look came back after a winter or two. If you’re seeing condensation creeping onto the frame or even a hint of mold, that usually means moisture’s been hanging out in there for a while. At that point, I just bit the bullet and started budgeting for replacements... not fun, but it made a noticeable difference in drafts and energy bills.