Drilling those little “weep holes” is one of those things that sounds clever until you’re standing there with a glass bit and sweaty palms, hoping you don’t shatter the pane. I’ve done it a couple times for clients who really didn’t want to spring for a new IGU, and it can buy you some time, but honestly, it’s hit or miss. If the seal’s shot, moisture just keeps sneaking back in. I usually tell folks, unless you’re comfortable risking a cracked window, you’re better off budgeting for a replacement down the line.
And yeah—gloves are non-negotiable now. I still have a scar from a vinyl sash that bit me back in 2017...
That’s honestly a solid approach. I’ve tried the silica packs too, and yeah, they help for a bit but if the seal’s toast, it’s just a band-aid. Props for giving it a shot though—sometimes you just need to buy a little time before replacement. Those glass bits make me nervous every time…