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What usually breaks on a commercial overhead door
Short answer
Commercial overhead doors usually fail at the springs, the tracks or the sections: high-cycle springs reach the end of their rating, forklifts and trailers bend tracks and sections, and cables fray from constant cycling. Most repairs are done on site, and a door can usually be secured or run safely by hand while parts are ordered.
Warning signs
Signs a commercial door needs service
The door is heavy or will not stay up
High-cycle springs have lost tension or broken.
Rollers binding or leaving the track
A bent track or bracket from an impact.
Creased or split sections
Forklift or trailer damage that will spread with use.
Frayed or slack cables
Cables wearing from heavy cycling or a slipped drum.
Daylight under the closed door
A worn bottom seal or a bent bottom section.
The job
Repairs built around a working dock
Commercial doors take more abuse than any residential door: dozens of cycles a shift, forklift traffic, trailers backing in and weather on both sides. The springs are rated for far more cycles than a house door, and they still wear out. Tracks and sections take impacts that would never happen at home.
So a commercial repair has two jobs. Fix the door, and keep the dock or bay working. We secure a damaged door, run it safely by hand where possible, and schedule the repair around shifts so the position is out of service for as little time as possible.
Dock door off track
Dock doors off their tracks
Dock doors leave their tracks when a trailer or forklift catches the door or the track, or when a cable slips. We secure the door, release the load, straighten or replace the bent track and brackets, re-seat the rollers and check the cables. If the opener was running when it happened, we check its limits and reversing devices as well; see commercial operator repair.
High-cycle spring failures
High-cycle spring failures
Busy dock doors cycle constantly, so their springs reach their rated cycles years sooner than a house door would. We replace them with springs rated for the door's actual traffic, which may mean a higher cycle rating than the original, and balance the door so the operator is not straining.
Forklift impact damage
Forklift and impact damage
A forklift tine or mast through a section is a common dock repair. A creased section weakens and can fold as the door curves into the track, so it is replaced rather than straightened. We order the matching section, keep the door secured or usable in the meantime, and check the neighboring sections and hinges for hidden damage.
Time
How long a commercial repair takes
Track, roller, cable and most spring repairs are done on a single visit. Sections and some springs are ordered. Until they arrive, the door is secured or left safe to run by hand, so the position can keep working where that is safe.
How the visit runs
How a commercial repair visit runs
- 1
Secure the position
Door clamped, operator locked out, area kept clear.
- 2
Assess the damage
Springs, cables, tracks, sections and operator.
- 3
Keep it working
Safe manual operation or a secured door while parts come.
- 4
Repair
Parts replaced, tracks straightened, door rebalanced.
- 5
Test and hand back
Full cycles and safety devices checked with your staff.
Around Naperville
Commercial doors near Naperville
Commercial buildings around Naperville range from shop bays in the city, where construction follows the 2018 International Building Code, to distribution buildings in Bolingbrook like the Prologis building at 470 Crossroads Parkway, listed with 15 dock-high doors. On a dock with that many doors, a single damaged door is easy to work around for a while, which is how a bent track becomes a door off its track. We repair the small damage before it grows.
Cost
What moves the price of a commercial repair
Commercial repairs vary by door size, damage and parts. We inspect, secure the door and price the repair before ordering anything.
- Springs, cables, tracks or sections
- Door size and steel gauge
- High-cycle spring rating
- Operator or safety device damage
- After-hours or weekend service
We repair LiftMaster, Marantec and other commercial operators on doors from Raynor, Overhead Door, Haas Door and Windsor Door, among other makers.
- LiftMaster
- Chamberlain
- Genie
- Clopay
- Amarr
- Wayne Dalton
- C.H.I.
- Raynor
- Haas Door
- Overhead Door
- Windsor Door
- Marantec
Answers
Questions about commercial garage door repair
Most track, roller, cable and spring repairs, yes. Sections and some springs need ordering; we secure the door meanwhile.
Yes, rated for the door's real traffic, which may be higher than the original springs.
Usually, if the door's maker still supplies matching sections.
We answer 24/7 and can schedule repairs around shifts to keep the dock working.
Yes. See dock leveler and seal repair.
Same group
Related door work we handle
Commercial Overhead Door Installation
New sectional doors for docks, shops, service bays and storefronts.
Rolling Steel Door Repair
Rolling steel curtains, slats, guides and hoists repaired.
Dock Leveler & Seal Repair
Levelers, bumpers, seals and shelters serviced alongside the dock door.
Commercial Door Operator Repair
Trolley and jackshaft operators, controls and safety edges repaired.