A lot of the doors in St. Matthews went up around 1970, which puts them right in the extension-spring era. That's a single steel skin, usually 16x7 for a double bay or 9x7 for a single, hung on two extension springs stretched along horizontal tracks above the door, each one anchored by a cable that runs down to a pulley near the bottom bracket. That layout is different from a torsion setup, and it fails differently. The cable on one side frays where it wraps the pulley, or the pulley itself seizes with rust and starts chewing through the cable strand by strand. You'll see it before it snaps: the door racks to one side when it opens, or a corner drags on the slab. Once a cable does let go, the door drops hard on that corner and the opener will strain against a door that's now hanging crooked on one spring. Some of these houses have been updated to torsion hardware over the decades, but plenty haven't, and the two jobs use different parts and different safety steps.
The age of the stock is the reason this keeps coming up here. A door installed in 1970 has had five decades of cable cycles, and even a replacement cable put on partway through that life is aging out now. St. Matthews sits about 6 miles from our shop in Louisville, and the calls we get from this stretch skew toward exactly this fault - fraying cable, not a broken spring, not an opener gone bad. Median household income here runs $80,716, which tends to mean owners who'll fix a door instead of tearing it out, so we see a lot of cable-and-pulley replacement on original hardware rather than full system swaps. With roughly 8,728 households in the area, that adds up to a steady, specific type of call, not a random mix of every garage door problem there is.
We run the 6 miles out from Louisville for this call. Tell us on the phone whether the door is dragging on one side or has already dropped - that changes what we load on the truck. If a cable has fully separated, don't try to force the door up or down; the remaining spring is holding tension it wasn't built to hold alone, and the door can shift without warning. Leave the opener disconnected and the door where it sits until we get there.
Extension-spring cable work is not a good first DIY project, and we'll say that plainly. The springs on either side of a 1970s door hold real stored energy, and disconnecting or re-tensioning a cable on one side while the other is still loaded is how people get hurt - not a scrape, a real injury. Swapping the cable itself is simple in principle: unhook it from the pulley, run a new one, reset the pulley if it's seized. The part most people get wrong is releasing spring tension safely first, and the second part they get wrong is matching the new cable's gauge and length to a door this old, where the original hardware may not match what's sold off the shelf now. If you want to inspect it yourself, fine - look for fraying strands near the pulley and a door that's started to hang unevenly. Past that, this is a call, not a Saturday project.
We don't have a posted price list here, and doors this old vary enough in hardware condition that a number without seeing the door would be a guess, not a quote. What we can tell you is what drives the cost on a job like this: whether one cable needs replacing or both, whether the pulleys and bottom brackets are original and need swapping along with the cable, and whether the springs themselves show wear from the same decades of cycling. We'll look at the door, tell you what's actually worn versus what's just old but sound, and price it before any work starts.
Because the two extension-spring cables rarely wear at the same rate. One frays at the pulley faster than the other, so that side loses tension first and the door racks toward it. It's a warning sign worth acting on before the cable separates completely and the door drops hard.
We stock common cable and pulley sizes but not every original bracket from that era. On some St. Matthews homes we can match hardware directly; on others we'll swap the worn component for a modern equivalent that fits the same track and bracket setup.
Don't. A dropped door on a snapped cable is often resting on one spring's uneven pull, and it can shift further without warning. Leave the door alone, disconnect the opener if it's still engaged, and wait for a tech rather than trying to move the car out.
About 6 miles. We don't keep a branch or depot in St. Matthews itself - the truck comes from Louisville for every call in the area.
Call now or request a free quote - same-day service on most repairs, upfront written pricing.
