Totally agree on the polyurethane—silicone's decent, but I've found it can peel away after a couple seasons, especially if the surface wasn't spotless...

Nice job getting through the install without headaches. I've tackled a few window replacements myself, and honestly, the prep work usually takes longe...

I ran into exactly this issue with my vinyl windows a few years back. They were installed with pretty tight tolerances, and I didn't think much about ...