I've seen vinyl improve a lot too, but I'm still skeptical about its long-term durability in extreme cold. Had vinyl windows installed at my folks' ca...

Good points about the acrylic panels. I put some in my home office last year, and you're spot-on about fitting them tightly—had to redo mine twice bec...

Totally agree that sealing and coatings are key, especially in harsh winters. I've seen vinyl windows perform surprisingly well in cold climates when ...