What Can Go Wrong
A lift cable doesn't usually snap out of nowhere. It frays first, one strand at a time, at the point where it wraps the drum, and most Wolf Trap owners don't notice until the door drops crooked on one side or won't lift past a foot off the slab. On the doors we see out here, built mostly in the early 1980s, the drums were sized for the lighter one-piece and early sectional doors of that period. Decades of wrapping and unwrapping wear a groove into that drum, and once the groove goes oval, it chews through a cable faster than a new drum would.
The other common failure is a cable that's jumped its track at the bottom bracket, usually after someone tries to force a door that's already binding on a bad roller. That's not really a cable problem, it's a symptom, and fixing the cable alone without checking the roller and track just buys you a repeat call in a few months.
One thing we won't do is tell you a single frayed cable is an isolated event. If one side shows wear, the other side is close behind, just a few weeks or months out. We replace both, and we'll say so before we quote it.
What It Costs
With a median household income of $250,001 in Wolf Trap, the repair-or-replace conversation lands differently here than in a lot of the areas we drive through. Homeowners at that income level almost never ask us to patch just the broken cable and leave the matching one to fail later. Nearly everyone opts to replace both cables and the drums in the same visit, since the labor to get the door open is most of the job cost either way, and coming back for the second side a season later costs more in total than doing it once.
We don't have a published flat rate to give you here, and we're not going to invent one. What we can tell you is that cable-and-drum work on the torsion hardware common to 1980s-built doors is a same-visit job, not a multi-day tear-out, and it doesn't touch the door panels or the opener unless something else turns up once the door's open.
What the Fix Involves
We release tension on the torsion spring, pull the old cable off the drum, and check the drum grooves for wear before deciding whether the drum gets reused or replaced along with the cable. On the early-1980s hardware common to Wolf Trap, we're also checking the bottom brackets and the track alignment, since a cable that failed from track binding will fail again if we only swap the cable.
Once the new cable is seated and wound, we re-tension the spring and cycle the door a dozen times watching the drum track evenly on both sides. If the door's opener is original to the house, we also check that the opener's travel limits haven't been masking a cable problem that's been getting worse for a while.
What we won't do is quote a cable swap on a door where the track is bent or the rollers are shot. That's a different repair, and doing the cable first just means redoing part of the job once the real cause shows up.
Why It Happens Here
Wolf Trap sits about 4 miles from our shop in Reston, and the housing here is a fairly tight band around 1981, part of the broader stretch of 1980s-and-90s construction across the areas we cover. That consistency matters for cable work: doors from that era mostly run on torsion springs with drums sized for the lighter doors of the time, and decades of freeze-thaw winters in this part of Virginia dry out the factory lubricant on the cable strands faster than a mild climate would.
With 5,382 households in Wolf Trap, we're not talking about a handful of outlier homes. Most of the calls we get from this side of our service area involve doors installed within a few years of each other, which means the same cable gauge, the same drum size, and often the same failure point. That's useful for us on the truck, since it means we're not guessing at parts before we've even seen the door.
Other services in this area
Questions, answered
How do I know if it's the cable and not the spring?
A snapped cable usually lets the door drop unevenly, hanging low on one corner while the other side stays put. A broken spring tends to make the whole door feel heavy or refuse to lift at all, but stay level. If your door is crooked rather than just stuck, cable is the more likely culprit.
Do you replace one cable or both?
We'll look at both before we quote anything, but if one cable shows fraying, the other is almost always close behind from the same age and use. Most Wolf Trap homeowners we've talked with choose to do both at once rather than pay a second service call a few months later.
Is this a job I can do myself?
We'd rather you didn't. A torsion spring holds a lot of stored force, and releasing it wrong is how people get hurt. Cable work on a torsion system isn't a weekend project even for someone handy with tools.
Tell Us What the Door Is Doing
Call and we'll ask a few questions before a truck leaves, then give you a straight answer on repair versus replace.