Types of Commercial Doors We Service

Rolling Steel Doors (Coiling Doors)

Fire-Rated Doors and Shutters

Sectional Overhead Doors (Commercial)

High-Speed / Rapid Doors

Insulated Sectional Doors

Chain Hoist and Manual Doors

Our technicians service all commercial and industrial door systems. Here’s what makes each type unique—and what typically fails:

Rolling steel doors consist of interlocking steel slats—typically 20-gauge or 22-gauge galvanized steel in flat or crowned profiles—that coil around a barrel assembly above the opening. Available in 2″ or 3″ slat widths. These doors are ideal for security-critical applications because there are no panels that can be forced open.

Specifications:Standard configurations span openings up to 14 feet wide by 14 feet tall. Wind load ratings range from 20 PSF standard to 31 PSF with heavier gauge slats. Steel, aluminum, or stainless steel construction available.

What we repair:

Fire doors are life-safety equipment required by building codes in openings between fire-rated walls. We service UL-rated fire doors with Class A, B, or C ratings providing 45-minute, 90-minute, or 3-hour fire protection in compliance with NFPA 80 standards.

How fire doors work:Heat-sensing fusible links (typically rated at 165°F) release the door during a fire. Viscous governors control descent speed for smooth, quiet closure. The door seals the opening to contain fire and smoke spread.

What we service:

Compliance note:Fire doors require annual inspection and testing per NFPA 80. We perform fire door inspections, drop tests, and provide documentation for your fire safety records.

Commercial sectional doors operate like residential doors but are built for industrial duty. They feature reinforced steel panels (typically 24-gauge or heavier), heavy-duty 3″ track systems (vs. 2″ residential), and high-cycle torsion springs rated for 50,000–100,000 cycles. Standard configurations include standard lift, high lift, vertical lift, and low headroom depending on ceiling clearance and operational requirements.

Common applications:Warehouses, distribution centers, service bays, loading docks, manufacturing facilities.

What we repair:Torsion springs (commercial wire sizes .250″–.312″), lift cables (7×19 galvanized aircraft cable, 3/16″–1/4″ diameter), cable drums (rated 750–1,100 lbs per drum), 11-gauge and 12-gauge commercial hinges, 3″ sealed-bearing rollers, track sections, and safety bottom brackets rated for 2,200 lb doors.

High-speed doors open at 24–80 inches per second (compared to 6–12 inches per second for standard commercial doors), minimizing air exchange between climate-controlled zones and reducing energy costs in high-traffic openings. These doors can cycle thousands of times per day.

Common applications:Cold storage, food processing, pharmaceutical facilities, manufacturing clean rooms, busy loading docks, parking structures.

What we service:Fabric roll-up curtains, rigid panel systems, bottom bars, side guides, control systems, safety devices, and high-cycle motors.

For temperature-controlled facilities, insulated commercial doors feature polyurethane or polystyrene core panels with R-values from R-6 to R-17+. Critical for Calgary’s climate where maintaining interior temperatures affects both energy costs and product integrity.

What we repair:Insulated panels (maintaining thermal break), perimeter weatherstripping, bottom seals, and ensuring proper door balance to prevent seal gaps.

Doors operated by chain hoist mechanism rather than electric operators. The hoist connects to a floor-level disconnect chain, allowing personnel to raise or lower the door manually. Common in older facilities, as backup systems, or where power isn’t available.

What we repair:Pocket wheels, chains, chain guards, gear reducers, disconnect mechanisms, and manual locking systems.

• Curtain slats– Replace damaged or bent slats without full curtain replacement
• Endlocks– Riveted to slat ends on every other slat to prevent lateral shifting and curtain wear in guides
• Bottom bars– Steel angle sections (slotted angles on fire doors) that seal the door at floor level
• Barrel assemblies– Spring housing and drum that controls curtain tension
• Guide assemblies– Vertical tracks that keep the curtain aligned during operation
• Operators– Tubular motors, jackshaft operators, and chain hoist systems

• Fusible links– 165°F rated links that must be replaced after activation or testing
• Viscous governors– Control descent speed; require periodic testing and service
• Drop-test mechanisms– Enable quarterly testing required by NFPA 80
• Smoke seals– Optional perimeter seals for smoke compartmentalization
• Reset mechanisms– Allow door to be returned to operational position after testing

Commercial Safety Systems

Safety Devices We Install and Repair

Commercial door operators must comply with UL 325 standards for entrapment protection. This standard requiresmonitored safety devices—if the safety circuit is compromised, the control board must detect the failure and prevent door operation until repaired.

Monitored photocells:Infrared transmitter/receiver pairs that detect obstructions in the door opening. Commercial photocells must be “monitored”—the control board continuously checks that both sensors are functioning. If a sensor fails or is disconnected, the door won’t operate (failsafe design).

Photoelectric sensing edges:Rubber sensing edges mounted to the door’s leading edge containing photoelectric sensors. When the edge contacts an obstruction, it triggers door reversal. Used on sectional doors where traditional photocells aren’t practical.

Electro-mechanical safety edges:Pressure-sensitive edges with electrical switches. Contact activates a switch causing the door to reverse. Available for doors up to 14 feet wide (one switch) or wider (two switches).

Safety inertia brakes:Installed on the torsion shaft, these brakes provide bearing support and prevent door free-fall if sudden acceleration occurs (such as spring breakage). Common on commercial sectional door applications.

We diagnose safety system faults, replace sensors, realign photocells, and ensure your safety systems meet UL 325 requirements.

Common Commercial Door Problems We Repair

Based on thousands of commercial service calls across Calgary, here are the most common issues we encounter:

✅Broken Torsion Springs

Commercial springs handle significantly more weight and cycles than residential springs. They use heavier wire gauges (.250″–.312+” vs. .207″–.262″ residential) and are rated for 50,000–100,000 cycles. When they fail, the door becomes inoperable. We stock commercial spring sizes for same-day replacement and can upgrade cycle life for high-traffic doors.

✅Operator Brake FailuresCommercial operators use solenoid-actuated disc or drum brakes. Brake failures cause doors to drift down under their own weight or fail to hold position during stops. Symptoms include the door “creeping” down when stopped or failing to stay in partial-open positions. We replace brake bands, drums, and solenoids and adjust brake tension.✅Circuit Board FailuresSolid-state circuit boards control all operator functions. Board failures cause symptoms including unresponsive controls, erratic operation, failure to reverse on obstruction, limit switch errors, and communication failures with safety devices. We carry replacement boards for LiftMaster, Micanan, Manaras, and Linear operators.

✅Damaged Panels & Sections

Forklift impacts, truck strikes, and general wear damage door panels. We can often replace individual sections rather than the entire door, saving significant cost.✅Operator/Motor Failures

Commercial operators run more frequently and under heavier loads. We repair and replace chain hoist operators, jackshaft motors, trolley operators, and control systems from all major manufacturers.✅Cable & Drum Issues

Frayed cables (individual wire strands breaking, usually near the drum or bottom bracket), cables jumping off drums, and worn drum grooves cause doors to operate unevenly or jam. Commercial doors use heavier cables (3/16″–1/4″ diameter, 7×19 construction) and drums rated for 750–1,100+ lbs per drum. We inspect the entire lift system and replace components as needed.✅Track Damage & Misalignment

Forklift impacts, settling, and wear can damage or misalign tracks. Commercial doors use 3″ radius track (vs. 2″ residential), and damage causes binding, noise, and uneven operation. We straighten, repair, or replace track sections.

✅Dock Leveler Failures

Hydraulic leaks, lip malfunctions, hold-down failures, and deck damage are common dock leveler issues. We service all brands and types of dock levelers.

✅Safety System Malfunctions

UL 325 requires monitored safety devices. When photocells fail, become misaligned, or lose communication with the control board, the door won’t operate (by design—this is the failsafe feature). We diagnose whether the issue is sensor failure, alignment, wiring, or control board communication.✅Rolling Steel Curtain Damage

Bent or damaged slats, worn endlocks, and bottom bar damage are common on rolling steel doors. We can often replace individual slats or sections rather than the entire curtain, saving significant cost.

✅Weather Seal Deterioration

Calgary’s extreme temperatures (-30°C to +30°C) destroy standard weather seals. Damaged seals allow cold air, moisture, and pests into your facility. We install commercial-grade bottom seals (4″–6″ heights) and perimeter seals using low-temperature vinyl or EPDM rubber that stays flexible in Calgary winters.

Preventive Maintenance Programs

The most cost-effective approach to commercial door management is preventing failures before they happen. Our preventive maintenance programs include:

Maintenance contract clients receive priority emergency service—when you have an emergency, you go to the front of the line.

• Scheduled inspections— Quarterly, semi-annual, or annual depending on door usage
• Lubrication— All moving parts (chains, bearings, hinges, rollers) properly lubricated
• Hardware inspection— Bolts, brackets, hinges, and fasteners checked and tightened
• Spring tension verification— Ensuring proper door balance
• Safety system testing— Photocells, safety edges, and auto-reverse verified for UL 325 compliance
• Track and roller inspection— Wear patterns identified before failure
• Weather seal assessment— Seals checked for deterioration
• Operator inspection— Motor, drive system, brakes, limits, and controls tested
• Fire door testing— Annual drop tests and documentation per NFPA 80
• Documentation— Detailed reports for your maintenance records

Commercial Door Brands We Service

Door Manufacturers:Overhead Door, Amarr, C.H.I., Wayne Dalton, Clopay, Raynor, Cornell, Janus International, DBCI, Steel-Craft, Haas Door, Hormann, Rytec, Albany, Richards-Wilcox

Operator Manufacturers:LiftMaster/Chamberlain, Genie/Overhead Door, Micanan/Nice, Manaras, Linear, Hormann, PowerMaster, Lynx Industries, FAAC, Doorking

Dock Equipment:Rite-Hite, Kelley, Blue Giant, Pentalift, Serco, McGuire, Nordock, Pioneer

Commercial Service Areas

Get Your Commercial Door Fixed Now

We provide commercial garage door repair throughout Calgary’s business and industrial districts:

Calgary Industrial Zones:

Surrounding Areas:

Don’t let a broken door stop your business. Calgary Garage Door Fix provides fast, professional commercial garage door repair throughout Calgary.

Same-Day Service | 24/7 Emergency Response | All Commercial Door Types

Call(403) 990-9536or(587) 200-3200

• Foothills Industrial Park
• Highfield Industrial
• Manchester Industrial
• Alyth/Bonnybrook Industrial
• Franklin Industrial
• Starfield Industrial
• Eastfield Industrial
• Great Plains Industrial
• Meridian Industrial
• Deerfoot Business Centre

• Airdrie— CrossIron Mills area, industrial parks
• Cochrane— Business and commercial districts
• Chestermere— Commercial areas
• Okotoks— Business parks