I’ve noticed the same thing with my windows—south side gets more sun, and those coated panes almost clean themselves after a good rain. Here’s how I tackled the north-facing ones, since they never seem to stay clean for long:
1. I tested the coating on just one north window before doing all of them. It helped a bit, but not as dramatically as on the sunny side.
2. Tried leaving them after a rainstorm, hoping for that “self-cleaning” magic... but nope, still had to scrub.
3. I started wiping them down with a microfiber cloth every few weeks instead of letting grime build up. Way less elbow grease that way.
Honestly, I think sunlight does half the work on the south side. The coating helps, but if you don’t get much direct sun, you’re still in for some scrubbing. Maybe there’s a trick to applying it better on shaded windows? Or maybe it’s just wishful thinking that rain will ever do all the heavy lifting...
You nailed it—sunlight’s a game changer for those coatings. The tech is supposed to use UV to break down grime, so if your window never sees the sun, it’s kinda like having a self-cleaning oven that never heats up. I tried a similar coating on my north windows (old 60s ranch, big maples blocking most of the light), and honestly, it was only a slight upgrade from my usual “ignore until embarrassing” method. Rain just smeared the pollen around.
One thing that helped a bit: I gave the glass a super thorough clean before applying the coating, like borderline obsessive. Then I did a second coat after it dried. It stuck better and lasted longer, but yeah, still not magic. I keep a microfiber cloth stashed near the worst offenders and swipe them every couple weeks—less rage cleaning later.
If you ever find a trick that actually works for shady windows, I’m all ears. For now, I guess we’re just stuck doing a little manual labor where the sun don’t shine...
- Interesting take, but I’ve actually had better luck with hydrophobic coatings on my shady windows than the UV ones.
- They don’t break down grime, but they do help water bead up and roll off, which seems to keep the pollen from sticking as much.
- Not a total fix—still need to wipe them now and then—but I spend less time scrubbing.
- Prep is definitely key, like you said. If there’s even a hint of residue, nothing works right.
- Manual labor’s probably always part of the deal, but at least the right coating can cut down the frequency a bit... at least in my experience.
- I hear you on the prep—cleaning windows before coating is way more work than I expected.
- Hydrophobic coatings seem to last longer for me, too, but in the spring, pollen still manages to cling around the edges.
- UV stuff didn’t make much difference here, maybe because my windows barely get any sun.
- Still gotta wipe them down every few weeks, but at least it’s not a full-on scrub session each time... small wins, I guess.