Steel sectional foam-core doors
That means the doors going bad here aren't the heavy old wood-composite panels we replace in older towns - they're steel sectional doors with factory-painted finishes and a foam-core insulation layer, the standard builder-grade door installed through the early 2000s housing boom. What fails on these is usually a single dented or cracked panel section, often the bottom one from a trailer hitch or a mower, or a middle section where the foam core has started separating from the steel skin.