Flowery Branch sits in a cold-moderate climate band, which means these foam-core panels see real freeze-thaw cycling every winter. A dented panel with the foam core cracked internally - even if the steel skin looks mostly fine from the street - loses its seal integrity, and moisture works into that crack over repeated cold snaps. Add in a median household income here of $88,185, noticeably above the wider service area's $82,692, and these are houses where mismatched color or a panel that doesn't sit flush gets noticed and gets called in rather than lived with for years. That combination - doors from one build era with one hardware generation, in a climate that punishes any seal failure, on houses where owners act on the cosmetic problem before it becomes a functional one - is specific to this stretch of the service area, not a generic garage door complaint.