Damp works into the strands — across Issaquah, Sammamish, Bellevue, Newcastle, Snoqualmie, North Bend, Redmond, Mercer Island.
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 the cause is simply that it never dries. A stranded steel cable anchored a couple of inches above a slab that is damp for most of the year wicks moisture up between the wires, and the core loses section while the outside still looks acceptable. We replace in pairs on inspection rather than waiting for a visible break, and we fit galvanised wire because plain cable in this air is a shortened clock.
The slab is the thing to understand. A garage floor here is often the coldest surface in the building and sits over genuinely wet ground, so it stays damp even when the weather is fine and the door is shut. Everything anchored within a few inches of it — cable ends, bottom brackets, track feet — lives in that. On houses cut into a hillside, where the back of the slab is below grade, it is worse again.
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.