Here’s how I usually tackle my old double-hungs when they start sticking or squeaking: First, I vacuum out all the gunk from the tracks (you’d be amazed what collects in there). Then, I’ll wipe the tracks with a damp rag and let them dry. For lubrication, I’ve had the best luck with a silicone spray—just a light coat along the track, open and close the window a few times, and it’s like night and day. I tried WD-40 once, but it got kinda gummy over time, so I stick with silicone now.
I’ve heard some folks use candle wax or even bar soap, but honestly, I haven’t tried those. Anyone swear by a different method? Or is there some magic trick for old wood windows that I’m missing?
I tried WD-40 once, but it got kinda gummy over time, so I stick with silicone now.
Spot on about WD-40. It’s more of a solvent than a true lubricant for wood windows—just ends up attracting dust and making things worse. I’m with you on the silicone spray, but I’ll add one thing: if the sash edges are rough, I’ll hit them lightly with some 220-grit sandpaper before lubing. Makes a big difference, especially on paint buildup. Candle wax works in a pinch, but it’s not as long-lasting as silicone in my experience.