A century of freeze-thaw on the anchors — across Scarsdale, Bronxville, Hartsdale, White Plains, Eastchester, Larchmont, Mamaroneck, New Rochelle.
Tracks are the door's railroad, and they only get noticed when the train derails: a scrape at the same point every cycle, a shudder at the curve, a roller riding the track lip, a door jammed cocked at knee height. We true tracks with gauges rather than by eye — correct roller clearance top to bottom, plumb verticals, matched horizontal radius, anchors reset into sound material.
The local cause is the framing rather than the steel. A hundred Westchester winters of freeze-thaw have worked every lag screw in these buildings a fraction looser, season after season, and softened the timber around the holes. The rail has drifted out of plumb with nobody having touched it, and driving a longer screw into tired wood is not a repair. We re-anchor into sound material, add backing where the original has gone, and replace corroded lower rail sections rather than persuading them.
Narrow driveways add the other cause. A short steep drive cut between a hedge and a retaining wall leaves very little margin reversing in, and a wing mirror or a bumper against a vertical rail knocks it a fraction out of plumb. That does not announce itself — the door runs, then scrapes, then jams, then derails weeks later. So when a door here comes off for no obvious reason, we ask about contact as a matter of routine and check plumb rather than only re-seating rollers.
Plumb, gauge and radius measured end to end — and the anchor material probed, because in these buildings the timber is usually the problem.
Truing, re-anchoring and any section replacement in one approved number.
Rails straightened or replaced, anchors reset into sound material with backing where needed, spacing set to gauge.
Door cycled end to end, clearances rechecked under load, quiet confirmed.
Tell us what your door is doing and we'll call you right back. No prices online — cost depends on the door, parts, and size, so we give an exact on-site quote.