Put the three facts together and the pattern is clear. DeKalb's garage doors are mostly 20 to 50 years old, they sit in a climate that runs hard freeze-thaw cycles every winter, and the manufacturers who built the original panel profiles have mostly moved on to new section standards. That combination is why a panel job here is rarely a quick parts-counter swap the way it might be in a newer subdivision somewhere else.
Across the wider service area - more than 36,000 households and over 21,000 owner-occupied houses spanning DeKalb and the smaller towns around it - the doors we're called out to repair skew toward that same 1960s-70s build era. A panel that cracked in DeKalb failed for the same structural reason one would crack in Sycamore or Genoa: old steel, old welds, and a winter that stresses both. We size the fix to the door in front of us, match what can be matched, and tell you straight when replacing the section run beats chasing a discontinued part.