Clopay Cable & Drum Replacement Nationwide

Clopay Cable & Drum Replacement: The Tomball Owner’s Guide

Clopay cable and drum replacement in Tomball typically runs $130-$250 installed, and we stock the common Clopay drum sizes and cable lengths on our trucks for same-day completion. The drum is the grooved wheel that winds the lift cable as the door opens; the cable is the braided steel line that carries the door’s weight. When either fails, the door usually hangs crooked, slams shut, or won’t lift at all.

Call (346) 703-6675

Most Tomball homeowners notice the problem on a weekday morning: the door opens six inches and stops, or one side lifts while the other drags. In the neighborhoods off FM 2920 and near Tomball Regional Medical Center, we’ve seen this trace back to a frayed cable that finally parted, or a cracked drum that let the cable slip its groove. The part that failed tells you everything. We start there.

Which Clopay Models This Applies To

Clopay uses two primary drum systems across its residential lines: the standard-lift drum found on most Classic, Gallery, and Coachman series doors, and the vertical-lift or high-lift drum used on taller openings and some Reserve Wood Custom installations. The standard drum carries a 4-inch diameter with a 12-inch cable wrap capacity; high-lift drums run larger, typically 5.5 to 6 inches, to manage the steeper cable angle.

To identify yours, check the label inside the top section of the door for the model series and date code. The drum itself will have a casting number - Clopay OEM drums usually show a 4-digit code starting with 4 or 5 - and the cable diameter is stamped on the cable tag or can be measured with calipers. Most Clopay residential doors use 1/8-inch or 5/32-inch aircraft-grade galvanized cable.

We carry OEM-compatible drums and cables that match Clopay’s specifications without the OEM markup. For doors under ten years old, we typically recommend the aftermarket equivalent; for Reserve Wood or custom-configured doors where drum geometry is tighter, we may source the factory part. We’re not affiliated with Clopay, but we’ve installed their hardware long enough to know which aftermarket lines hold spec and which don’t.

Signs Your Clopay Cable & Drum Replacement Is Failing

• The door opens crooked or one side hangs lower. This usually means one cable has frayed and stretched beyond its pair, or the drum has developed a flat spot that lets the cable seat unevenly. The imbalance puts lateral stress on the track and rollers.
• You hear a loud pop or bang from the header area, then the door won’t move. A cable snap under load sounds like a rim shot. The remaining cable and spring now carry double the tension, which is dangerous to operate and will damage the door if you keep trying.
• The cable is unwound from the drum and lying in a loop at the side of the track. This happens when the drum’s retaining collar cracks or the set screw backs out. The cable didn’t break; it lost its anchor point.
• The door slams hard when closing or feels heavy to lift manually. A worn drum groove lets the cable slip instead of winding smoothly. The effective spring tension drops, and the door’s weight transfers to the opener or your back.
• Visible rust, kinking, or broken strands on the cable. Tomball’s humidity swings between Gulf Coast summer moisture and dry winter fronts accelerate surface corrosion. A cable with three or more broken strands in a one-foot section is past due.

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Replacement Cost & What’s Included

The $130-$250 range covers a standard single-side replacement: new drum, new cable, hardware, and labor. Both sides together run $220-$420. What moves you within the range is door height (8-foot vs. 10-foot cables), drum type (standard vs. high-lift), and whether the failed component damaged the bottom bracket or flag bracket, which we replace if they’re distorted.

We quote a flat, written price before touching anything - Clause 1 of The Haven Standard. That price includes the documented photo record: images of the failed drum and cable, the replacement parts installed, and the door’s final balance test. The 365-Day Done Right Promise covers the work. If it’s not right, we make it right.

DIY or Call Us?

There’s a short list of what you can safely check yourself. Verify the door is disconnected from the opener by pulling the red release handle. Look at the cables and drums with the door fully closed - never with it partially open, where spring tension is highest. If you see a broken strand, a cracked drum, or a loose set screw, you’ve found enough. Stop there.

What goes wrong with DIY on this part: the torsion spring above the door is under hundreds of pounds of torque, and the cable is part of that loaded system. Winding or unwinding a drum without proper bars and training can cause serious injury. We’ve responded to calls in Tomball where a homeowner released the wrong set screw and the winding cone spun free. The repair then included the cable, the drum, the bent track, and an emergency room co-pay that wasn’t in the budget.

We carry Clopay-compatible drums and cables on every truck. Call (346) 703-6675 and we’ll quote the exact range for your door before we dispatch.

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