Salt and damp work into the strands — across Scarsdale, Bronxville, Hartsdale, White Plains, Eastchester, Larchmont, Mamaroneck, New Rochelle.
Garage door cables do brutal, invisible work. Every cycle they carry the door's whole weight from the bottom brackets up over the drums, and when one frays the door starts telling on it: a tilt to one side, a cable hanging slack, a jump off the drum, a door that drops the last foot instead of easing down. Keep cycling it and the healthy cable carries double until it does not.
Here the failure develops inside the strands at the lower anchor, and two things drive it. Road salt, which arrives as a film on every car from November to March and drips onto the slab where the cable is anchored. And the slab itself — an unsealed century-old garage floor over damp ground wicks moisture upward all year. Between them the cable core loses section while the outside still looks acceptable, so we replace in pairs on inspection rather than waiting for a visible break.
Old slabs are the underrated half of this. A 1920s garage floor is usually thin, unsealed and laid straight onto ground that holds water, and on the many hillside garages here the back of that slab is below grade with soil against it. The air at floor level in those buildings is damp for most of the year regardless of the weather, which is why galvanised cable and a proper look at the anchors is the standard specification rather than an upgrade.
Spring energy locked down first — cable work on a live system is how people get hurt.
Cables, plus any drum, anchor or bracket the inspection flags, in one approved number.
Correct length and gauge in galvanised wire, drums cleaned, seated right, tension synced side to side.
Travel checked plumb and level, full cycles run, auto-reverse verified.
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.