Casas Adobes sits about 15 miles from our Tucson shop, and the housing stock we run into out there centers on 1986 - right in the middle of the broader 1980-2007 build wave across this service area. A door from that period is almost always a steel sectional, two or three layers if you're lucky, hung on torsion springs mounted on a header bracket above the opening. Nothing exotic. What gets it is the heat. This region sits in a severe heat band, and thirty-plus years of summer swings on a steel panel means the galvanized coating thins, the baked-on paint chalks and cracks at the seams, and the foam-core doors (if the house got one) start to separate from the skin at the bottom panel first. None of that is a Casas Adobes-only problem, but a door built in 1986 has had roughly forty summers to earn it, and that math is what we walk up on more than anything else out there.