Garage Door Panel & Cable Replacement

Garage door panel damage is almost always a vehicle hit — a reversing 4WD that didn’t quite clear the door, a kid on a bike that misjudged speed, or a wind-borne object. Cable damage is age-related (frayed cables under spring tension, eventually snap) or a side-effect of off-track operation.

In both cases, the right call is to fix the specific damaged part rather than replace the whole door. A single panel replacement on a sectional door is typically $480-$1,200 supplied and installed; cable replacement is $180-$340 per pair.

Single panel replacement

For sectional doors, individual panels can be ordered and swapped without replacing the whole door — provided:

• The door brand and model is still in production (or has spare panels held)
• The damaged panel hasn’t twisted the adjacent panels’ hinge mountings
• The door colour and finish can be matched (Colorbond colours match fine across years; woodgrain and custom finishes are harder)

Process:

1. Technician measures and photographs the damaged panel.
2. Panel is ordered from the supplier (1-3 weeks lead time for stock; longer for custom).
3. Installation visit — typically 1.5-3 hours. The door is partly disassembled, the panel swapped, hinges and rollers refitted, and the door balance and force settings re-set.

For tilt and roller doors, “panel” replacement isn’t a thing — they’re single-piece doors. Damage usually means a full door replacement, though minor dents in roller doors can sometimes be hammered out cosmetically.

Cable replacement

The lift cables run inside the tracks, attached to the bottom corner of the door at one end and to the cable drum at the spring shaft at the other. They’re under significant tension when the door is closed and progressively less as the door opens.

Cables fail by:

• Fraying and snapping. Visible in advance — strands sticking out at the drum or the bottom corner.
• Running off the drum. Caused by a sudden stop (jamming), or by a cable that’s too long for its drum.
• Being damaged in an off-track event. The off-track damage is the visible problem; the cable damage is the consequential cost.

Cables are always replaced as a pair — same age, same condition, same forces. Single-side replacement leaves you with a tension imbalance.

Why you shouldn’t run the door with a damaged panel or cable

Each operation cycle on a damaged door makes the damage worse:

• A buckled panel will progressively bend its neighbours’ hinges.
• A frayed cable can snap mid-operation, dropping the door uncontrollably.
• A cable that’s run off the drum can wedge in the tracks.

If your door’s damaged, stop using it. Use the manual release on the opener and lift it manually only if you must. Get the technician on-site before more damage compounds.