The housing stock across this service area runs 1952 to 2003, with a median build year of 1975, but St. Louis Park's own median lands closer to 1965 - older than the area average, and old enough that a lot of these garages still have their first or second door. Steel rollers on steel shafts were standard equipment on doors installed through the 1960s and 70s, and they were never designed to run maintenance-free for six decades. Add a severe cold climate and an unheated garage, and steel bearings stiffen every winter, which is exactly when homeowners notice the grinding getting worse instead of better. A door that ran fine in September can be dragging by January for no reason other than the cold tightening up worn steel. That combination - older stock, original hardware, real winters - is why roller wear shows up earlier and louder here than it would in a garage built in the 1990s with nylon rollers from the start.