Most of the doors we pull out on install day aren't failing from one dramatic thing - they're failing because they were built for a different stretch of decades. Houses from the 1966-1999 run, which is most of what's standing across the 25 or so areas we work in, came with steel sections and hardware sized to that era's standards, not to today's wind load and insulation expectations. Lakeland sits in a mild temperate band, so we don't get the hard freeze-thaw cycling that kills doors up north, but we do get sustained humidity and heat that work on seals, bottom weatherstrip, and uninsulated steel panels over thirty-plus years. That combination - old hardware plus decades of humidity - is why so many installation calls come from owners who aren't replacing a broken door so much as retiring a tired one. A door that's structurally fine but was built before double-layer insulation was standard will run warmer and louder than a current panel, and that's a install-driven upgrade, not a repair.