Expected lifespan expiration
A door installed the year a house was built has now outlived at least one, sometimes two, expected service cycles for the springs and rollers that came with it. Homeowners call for "a new door" and what actually surfaces on the driveway is the original track, original hinges, and a torsion spring rated for a door panel that's since been swapped once already by a previous owner who never touched the hardware behind it.
