Rolling steel doors and fire shutters
Service, repair and inspection of rolling steel openings — including rated fire shutters, the most overlooked assembly in most industrial buildings.
Three different things people call the same thing
Rolling steel covers several assemblies that behave differently and carry different obligations.
Service doors — interlocking steel slats rolling into a barrel above the opening. Loading areas, warehouses, garages, secure storage. Manual chain hoist or motorised.
Counter shutters — smaller versions over serveries, reception counters, canteens and concession openings. Often rated where they pass through a fire separation.
Fire shutters — rated assemblies held open by a fusible link or an alarm-released device, designed to close automatically when a fire is detected. They look like an ordinary rolling door and are not one.
Nobody inspects the fire shutters
In our experience these are the least inspected fire protection assembly in any building, and the reasons are consistent.
- They are high up and out of easy sight
- They look like an ordinary rolling door, so nobody registers they are rated
- In multi-tenant buildings nobody is certain whose responsibility they are
- They are designed to stay open, so a failure is invisible until it matters
- Testing one means dropping it, which people avoid
A fire shutter that will not drop is worth nothing at all. Unlike a swing door, where a fault is at least visible, a shutter gives no indication it has failed until the day it is needed.
The Code names shutters directly
There is no need to argue about whether a fire shutter counts. The Ontario Fire Code defines a “closure” as a device or assembly for closing an opening through a fire separation, and says it may include “a door, a shutter, wired glass or glass block” — together with all its components, such as hardware, closing devices, frames and anchors. Division A, Article 1.4.1.2.
That puts rated shutters inside Articles 2.2.3.1 to 2.2.3.3 without anyone needing a legal opinion on it.
Articles written for rolling assemblies
Read Article 2.2.3.2(1) and it is hard not to conclude that rolling assemblies were exactly what the drafters had in mind.
Keep the release mechanism working — 2.2.3.2(1)(a) and (d)
Closures are maintained operable by “keeping fusible links and heat or smoke-actuated devices undamaged and free of paint and dirt” and by “repairing or replacing inoperative parts of hold-open devices and automatic releasing devices”. On a fire shutter that mechanism is the entire point of the assembly.
Keep it running freely — 2.2.3.2(1)(b)
“Keeping guides, bearings and stay rolls clean and lubricated.” A swing door has no guides and no stay rolls. This clause is about rolling steel, and it is a maintenance instruction in the regulation itself.
Keep the drop path clear — 2.2.3.3
A closure “shall not be obstructed, blocked, wedged open, or altered in any way that would prevent the intended operation of the closure”. Racking, stock or equipment stored under a shutter is that article, described in the regulation’s own words.
Repair damage that affects the rating — 2.2.3.1
Where closures are damaged so as to affect the integrity of their fire-protection rating, they are repaired so that integrity is maintained. Impact damage to a curtain or a guide rail is squarely within this.
A fault found is a fault owed — 1.1.1.2(3)
Anything that does not operate, or does not appear to operate, as intended when checked, inspected or tested is repaired or replaced where the failure would adversely affect fire or life safety. Finding it is not the end of it.
New on 1 January 2026: every closure
Until 31 December 2025, Articles 2.2.3.2(1) and 2.2.3.3 opened with the words “Closures in fire separations”. Those words were struck out effective 1 January 2026, so both duties now reach every closure in the building — including rolling assemblies that are not in a fire separation at all.
On frequency, the Code is silent — and we will not invent a number
Articles 2.2.3.1 to 2.2.3.3 attach no interval. They are continuous duties: the closure is to be maintained operable, and not obstructed, at all times. There is no monthly or annual figure in them to point at.
In practice a continuous duty gets discharged on a schedule, because nobody can evidence “at all times” without one. Three things should set that schedule, and none of them is us: the manufacturer’s instructions for your particular assembly, your building’s fire safety plan, and what your fire prevention officer expects to see. We would ask all three before proposing a frequency.
On drop testing specifically: the Fire Code does not state an interval for shutters. What it does require is that the automatic releasing device be kept in working order, and the only way to establish that a release mechanism works is to operate it. That is a practical argument for drop testing rather than a citation, and we would rather label it as one than dress it up as a legal duty.
If anyone tells you the Code sets a specific drop-test frequency for fire shutters, ask them which article. It is a fair question and it is the one we would want asked of us.
Common faults
Impact damage to slats and guides
Forklifts and freight strike the curtain or the guide rails. A bent guide stops the curtain travelling smoothly and can prevent it closing fully.
Binding and jamming
Debris in the guides, seized bearings, or a curtain that has drifted out of alignment. Often presents as a door that needs forcing.
Failed or painted fusible links
On a fire shutter the release mechanism is the whole point. Painted, corroded or replaced with the wrong component and the shutter will not drop — and Article 2.2.3.2(1)(a) names paint and dirt on a fusible link specifically.
Spring tension lost
Barrel springs weaken over time. A door that has become very heavy to operate manually is usually telling you the tension needs resetting.
Motor and control faults
Operators, limit switches, safety edges and controls. Frequently the fault is mechanical binding rather than the motor itself.
Obstructed drop path
Racking, stock or equipment stored under a fire shutter. Extremely common, and it renders the assembly useless.
Rolling steel work we carry out
- Curtain, slat and guide repair and replacement
- Barrel spring tension adjustment
- Bearing, bracket and hoist servicing
- Fire shutter inspection, including release mechanisms and fusible links
- Drop testing and reset
- Motor, limit switch and control diagnosis
- Documentation of condition and findings against each opening
- Identifying obstructions and advising on drop path clearance
When were your shutters last tested?
If nobody can answer that, it is worth finding out. We inspect, test and document rolling steel and fire shutters across the GTHA.