Full 25-point door and opener safety check with every visit - springs, cables, rollers, tracks, and your LiftMaster or Chamberlain opener included
You get a price before we start. It does not change when the truck arrives.
Clopay Cable & Drum Replacement: The Simi Valley Owner’s Guide
Clopay cable and drum replacement in Simi Valley typically runs $130 to $250 installed, and we stock compatible cables and drums on our trucks for same-day service in most cases. You’ll usually discover the failure when the door hangs crooked, makes a grinding noise on the way up, or one side drops suddenly. The cable is the twisted steel line that lifts the door; the drum is the grooved wheel at the top of the shaft that winds that cable. When either fails, the door won’t lift evenly, and continuing to run the opener makes the damage worse.

Here’s the symptom picture we see most: a homeowner hits the opener, the door stalls partway, and one cable has unwound into a rat’s nest around the shaft. That’s a cable drum failure. Or the cable snaps outright, and the door slams into one track. Both are repairable the same day in most Simi Valley neighborhoods, and the price is written before we touch anything.
Which Clopay Models This Applies To
Clopay uses two main drum profiles across their residential line: a 4-inch standard drum on most 7-foot doors and a 6-inch high-lift drum on doors with extra track travel. The cable spec varies by door height and spring type. A 7-foot Clopay door with a torsion spring system takes a 1/8-inch aircraft-grade cable, usually 12 feet long with a loop on one end. An 8-foot door needs a longer cable, and the drum groove count changes to match.
The compatibility gotcha we run into in Simi Valley is this: Clopay’s Classic, Gallery, and Coachman lines share compatible drums and cables, but the Clopay Reserve and Canyon Ridge series use a heavier drum with a different shaft diameter. If you have an older Clopay door from before 2005, the drum set may be a legacy size that Clopay no longer catalogs. We measure the drum diameter and count the cable grooves before quoting, so you get the right part the first time. We are an independent service provider, not affiliated with Clopay, but we match OEM-spec parts exactly, and we also carry quality aftermarket equivalents where the original is discontinued or backordered.
Signs Your Clopay Cable & Drum Replacement Is Failing

- The door hangs crooked or one side sits lower. The cable on one side has stretched or slipped off the drum, so one side of the door carries more weight than the other.
- You hear a grinding or scraping noise during operation. The cable is dragging across the drum flange rather than seating in the groove, which means the drum is worn or the cable path is misaligned.
- One cable looks slack while the door is closed. That slack means the cable has jumped the drum. Under tension, it will wind unevenly and eventually fray or snap.
- You can see frayed strands or broken wires on the cable. This is the last warning before a snap. Simi Valley’s dry heat accelerates jacket wear on older cables, especially on west-facing doors that catch afternoon sun.
- The door slams down or drops hard when closing. If a cable snapped, the spring tension is no longer controlled on that side, and the door can fall fast enough to damage the panel or injure someone standing under it.
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AfterReplacement Cost & What’s Included
Clopay cable and drum replacement in Simi Valley runs $130 to $250 for a single-cable repair, and $250 to $500 when both cables and both drums are replaced together. The lower end covers a straight cable swap on a standard 7-foot door with good drums. The upper end includes both drums, both cables, and re-balancing the door so it seats evenly on the tracks.
The price includes the parts, labor, and a written scope before any work starts. That’s Clause 1 of The Haven Standard, and it applies to every job we do, from a quick cable re-seat to a full drum swap. We photograph the failed part before quoting a replacement, per Clause 4, so you see exactly what we found before you approve the work. No surprises, no upsell, no invoice that exceeds the written quote.
DIY or Call Us?

You can safely inspect the cable and drum yourself: with the door closed, look for frayed strands, slack cable, or visible wear in the drum grooves. That’s useful information to have before you call. What you should not do is attempt to replace a cable or drum on a torsion spring system. The torsion spring is under enough tension to cause serious injury, and unbolting the drum releases that tension all at once. This is the one part of garage door work where a mistake doesn’t just cost you a replacement part; it costs you a hospital visit. Name the part, quote the range, then pick up the wrench is a good rule, but the wrench belongs to a trained technician on this repair.
We carry Clopay-compatible cables and drums on the truck, along with parts for LiftMaster, Chamberlain, and Genie openers. If you’re in Simi Valley and the cable has already snapped, call (661) 964-4530. We’ll tell you over the phone what we think it is, give you a written price when we see it, and photograph everything before and after.
FAQs
Cables typically last 8 to 12 years on a Clopay door in Simi Valley, but the dry heat and occasional Santa Ana dust can shorten that by a couple of years. Drums usually outlast two cable replacements before the grooves wear enough to matter. If your door is over 10 years old and you’ve never replaced the cables, they’re on borrowed time.
No, a frayed or snapped cable cannot be safely repaired. Splicing a garage door cable creates a weak point that fails under tension, and the repair costs more in labor than a new cable anyway. Replacement is the only safe option.
A single cable replacement takes about 30 to 60 minutes on a standard Clopay door. Replacing both cables and both drums takes 90 minutes to two hours, including re-balancing the door and testing the opener. Most Simi Valley jobs are done same-day.
Yes, we carry standard 4-inch and 6-inch drums, plus 1/8-inch cables in the common Clopay door heights. If you have a non-standard size, we measure it on the first visit and come back with the exact part, usually within one business day. Call (661) 964-4530 and we’ll tell you over the phone whether your configuration is one of the parts we stock.
Call for a Written Price

If your Clopay cable has snapped or the drum is grinding, don’t run the opener again. Call (661) 964-4530 and a live person answers, day or night. We’ll walk through what you’re seeing, schedule a visit, and hand you a written price with a written scope before any work starts. The photo record is included on every visit, so you see what we found and what we did. That’s how we’ve done it since 2015, and it’s how every Clopay cable and drum replacement in Simi Valley should go.
Written by Marcus Deller, Owner, Servo Garage Doors Simi Valley at Servo Garage Doors Simi Valley, serving Simi Valley and nearby areas.






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