A commercial door isn’t a residential door scaled up. The cycle counts are 10x higher, the failure modes are different, the parts are heavier, and the cost of downtime is measured in trucks that can’t leave the bay. We service three categories of commercial overhead door — rolling steel service doors, sectional commercial doors, and high-cycle dock-area sectionals — plus the dock equipment that ages alongside them: levelers, edge-of-dock plates, dock seals, and bumpers. Most of our commercial customers are auto-body shops, last-mile delivery hubs, contractors with truck bays, and condo association garages. We do same-day emergency service for active fleet operators and we offer maintenance contracts that, in plain math, pay for themselves the first time we catch a spring before it fails.
Roll-ups, sectionals, and dock equipment — what we service
Rolling steel doors are the slat-curtain doors that coil into a barrel above the opening — common on warehouses, self-storage, and back-of-house loading bays. Failure points: the spring inside the barrel, the slats themselves (impact damage), the guides, and the operator (chain hoist or motorized). Sectional commercial doors are scaled-up versions of residential sectional doors with heavier-gauge steel, higher-cycle springs (50,000 to 100,000 cycles), and commercial-class operators. Dock equipment is the unsung half of the system: dock levelers that bridge the truck-to-floor gap, edge-of-dock plates, hydraulic versus mechanical levelers, dock seals and bumpers. We service all of it and we keep parts for the major manufacturers — Cookson, Cornell, Wayne Dalton Commercial, McKinley, Raynor, C.H.I. — on the shelf.
The preventive maintenance schedule that pays for itself
- Quarterly: full visual inspection, lubrication of all moving parts, photo-eye and reverse-test verification, fastener torque-check, balance test
- Semi-annual: cable inspection (especially at the drum and the bottom bracket), spring cycle-count assessment, operator brake and clutch service
- Annual: full spring replacement on high-cycle bays past 70% of rated life, roller and bearing replacement on doors past 8 years, operator overhaul
- As-needed: weather seal replacement (3-5 year life in Chicago), guide-and-track alignment after any impact event
How an emergency commercial call works
Active maintenance-contract customers get a 90-minute response window during business hours and 2-hour after-hours. The truck arrives with the commercial parts inventory — heavier springs, heavier cables, replacement slat sections for roll-ups, operator brushes and contactors, dock leveler hydraulic seals — and the tech is trained on both door and operator brands you have. We don’t “diagnose and come back tomorrow”; the goal is to clear the bay before the next truck shows up. Non-contract emergency calls get the same response when we have capacity, billed at our standard commercial rate with a flat-rate quote before any work begins. Either way, you get a paper invoice, a photo log of what was repaired, and a service ticket that goes into your maintenance file.
Maintenance contracts and what they cover
Our standard commercial contract covers the quarterly preventive visits, priority emergency response, parts at our cost (no markup), and a rate-locked labor figure for the contract term. Most of our fleet customers run 1 to 6 doors and the contract pays for itself the first time we replace a spring before it fails — a planned replacement is 45 minutes during a maintenance visit; an emergency spring failure is 2 hours and a half-day of lost bay. Multi-door condo and warehouse contracts are quoted per door and include all dock equipment on the same property. We’re licensed Illinois #104-018922, $2M general liability, and insured for work on commercial premises including occupied retail and food-service kitchens.