Interesting points about vinyl and fiberglass. I'm wondering though, is warping really that common with vinyl frames, or could it be more related to s...

Interesting about the fiberglass windows—I've been considering them too, mostly for the insulation factor. Did you notice any issues with condensation...

Interesting point about altitude-rated foam, hadn't thought of that before. But could it also be the framing material itself causing some of that pull...

Interesting points here, but I'm still wondering—is fiberglass really that much better than vinyl in the long haul? I've had vinyl windows for about f...