High-speed door and rolling shutter service
Two door types that live on the busiest and most exposed openings a business has. High-speed doors run the interior and exterior openings that cycle constantly, and rolling steel shutters and grilles secure storefronts, service counters, parking garages and yards after hours. We repair, service and install both, across Hamilton, Burlington, Milton, St. Catharines and Niagara.
What do we do on high-speed doors?
A high-speed door earns its place on an opening that cycles all day: between a warehouse and a cold room, between production and shipping, or on an exterior bay that cannot stay open long. They fail differently from a sectional door: torn or creased curtains, bottom-bar and breakaway resets, photo-eye and loop-detector faults, and controllers that stop responding. We service the curtain, the drive, the controls and the safety devices, and we install new high-speed doors sized to the opening and its cycle count. These are a distinct product class with their own terminology and ratings, set out in DASMA Technical Data Sheet 451, High Performance Door Terminology.
Source: DASMA Technical Data Sheet #451, High Performance Door Terminology (PDF). Checked 7 September 2026.What about rolling shutters and security grilles?
Rolling steel shutters and grilles use the same curtain-and-guide construction as a rolling steel door, scaled for storefronts, counters, parkades and yard openings. The common failures are bent or jammed slats, worn guides, spring counterbalance wear on manual units, and operators or locks that stop working at exactly closing time. We repair and replace shutters and grilles, and install new ones where an opening needs to be secured after hours. Maintenance and performance guidance for rolling sheet doors is published in DASMA Technical Data Sheet 286, Rolling Sheet Door Maintenance and Performance Evaluation.
Source: DASMA Technical Data Sheet #286, Rolling Sheet Door Maintenance and Performance Evaluation (PDF). Checked 7 September 2026.What officially counts as a high-speed door?
The definitions are published: a high performance door is generally one built for 100 or more cycles a day or opening at 20 or more inches per second; a high-speed door specifically opens at 32 inches per second or faster and closes at 24 or faster. The same terminology sheet defines the inertia brake, a device that locks the shaft if it overspeeds, “preventing it from moving until door can be repaired”. That definition is worth knowing on a service call: a high-speed door that suddenly locked solid mid-travel may have just been saved by its own brake, and the fix is a technician reset, not a breaker flip. The energy arithmetic that decides when these doors pay for themselves, the 55-cycles-a-day crossover, is worked through in the high-speed vs rolling steel guide.
Sources: DASMA Technical Data Sheet #451, High Performance Door Terminology (PDF); and DASMA TDS #455 (PDF), energy crossover. Checked 7 September 2026.What happens to a fast door in high wind?
Wind is an operating condition with its own engineering: DASMA distinguishes the design wind load a closed door must survive while remaining intact and safely operable from the smaller operational wind load it can actually move under. Exceed the design load and a curtain can be pushed out of its guides into the building or pulled out of the opening. For doors that must run in wind, the published guidance includes wiring the controls for constant contact in both directions and involving the door manufacturer before making windy-day operation routine. If a storm has left a curtain bowed or an edge sitting proud of a guide, stop using the opening and have it inspected before the next cycle finishes what the wind started.
Source: DASMA Technical Data Sheet #456, High Performance Door Operation Under Wind Load Conditions (PDF). Checked 7 September 2026.How do high-speed doors ask for service?
- High-speed door reverses, stalls, or runs at reduced speed
- Curtain torn, creased, or pulled out of the side guides
- Bottom bar breakaway has been hit and not reset properly
- Photo eyes, loop detectors or pull cords not triggering the door
- Shutter binds partway, or the slats are bent from impact
- Shutter lock or operator fails at closing time and the opening cannot be secured
What happens on a high-speed door service visit?
- Call with the door type and openingInterior or exterior, manual or motorized, and what it is doing. A shutter that will not close after hours is dispatched as an emergency.
- Curtain, guides, drive and safety checkThe technician checks the curtain and guides, the drive or counterbalance, the controls and every safety device before quoting.
- Repair or replacementGuide hardware, bottom-bar parts, photo eyes and common controls ride on the truck. Curtains and new doors are ordered and fitted on a stated date.
- LoggedWhat was found, what was done and what to watch. On a maintenance program it goes into the door’s record.
High-speed door and shutter service is available in Hamilton · Stoney Creek · Burlington · Oakville · Milton · Grimsby · St. Catharines · Niagara Region.