Garage / Roller Door Installation SWMS

Garage and roller door installation is a multi-trade carpentry and mechanical task involving the lifting, alignment, and tensioning of heavy curtain assemblies, sectional panels, and torsion or extension springs, plus the wiring of low-voltage motor controllers and safety edges. The work routinely combines manual handling of awkward loads at height, stored mechanical energy in pre-tensioned or field-tensioned springs, and live electrical interfaces — a hazard profile that places it squarely within High Risk Construction Work under WHS Regulation 2025 section 291. Spring failures during winding or curtain release have caused fatal head and chest injuries across the Australian door industry, and incorrect motor limit setting has produced crush incidents on closing cycles. Because the work involves a risk of a person falling more than two metres, work with powered mobile plant, and pressurised stored-energy systems, a Safe Work Method Statement is mandatory before work commences and must be available at the workplace for the duration of the task.

Hazards identified

7 hazards covered, sorted by priority.

Control measures

Hierarchy-of-controls order: elimination → substitution → isolation → engineering → administrative → PPE.

1. 1Elimination — Specify factory-tensioned, pre-assembled roller door cassettes where opening size permits to remove field winding of torsion springs entirely from scope.
2. 2Elimination — Schedule installation before slab pour finish or wall lining so all overhead fixings can be reached from ground level without ladder work.
3. 3Substitution — Replace traditional torsion spring sets with counterbalance motor systems (direct-drive tubular motors) that hold the curtain without stored mechanical energy.
4. 4Substitution — Use lightweight aluminium sectional panels rather than steel where wind rating allows to reduce manual handling load below 25 kg per panel.
5. 5Engineering — Install curtain roll using a two-person mechanical lifter or genie hoist rated to 150 kg to control vertical positioning into drum wheel brackets.
6. 6Engineering — Lock motor isolator in OFF position and apply personal danger tag under AS/NZS 4836 before opening the controller enclosure for wiring termination.
7. 7Administrative — Use a calibrated winding bar of correct length per manufacturer specification, and never re-grip mid-quarter-turn; document spring turns on the door log.
8. 8Administrative — Conduct daily pre-start briefing referencing this SWMS, verify each worker has signed on, and confirm exclusion zone of 3 m during spring tensioning.
9. 9PPE — Wear cut-resistant Level C gloves, safety glasses to AS/NZS 1337.1, steel-cap boots to AS/NZS 2210.3, and hard hat during curtain lifting operations.
10. 10PPE — Use face shield over safety glasses during torsion spring winding to protect against winding bar slip and spring coil fragment ejection.

Applicable Codes of Practice

High-Risk Construction Work triggered

Worked example

On a suburban townhouse handover scope, a two-person carpentry crew arrives to install three sectional garage doors before practical completion. At the tailgate pre-start, the lead installer opens the Garage Door Installation SWMS on a tablet, walks through the seven hazards with the offsider, and both sign the daily attendance register. Reviewing the hazard register, the team identifies that today's door 3 sits over a stepped slab, increasing the curtain lift height to 2.4 m — they upgrade the control from stepladder to a hired alloy mobile platform, ticking the engineering control on the SWMS variation field. Before tensioning the torsion spring on door 1, the offsider establishes the 3 m exclusion zone using witches hats, the lead dons face shield and gloves, and the calibrated winding bar is checked against the manufacturer's turn count chart referenced in the SWMS. Mid-task, the offsider notices the door 2 motor controller GPO is unlabelled; work pauses, the licensed electrician on site verifies isolation with a test instrument, and the event is recorded on the SWMS adjustment log. Final balance test and safety edge function are confirmed against AS/NZS 4505 criteria listed in the SWMS commissioning checklist, both workers countersign the completion section, and the document is uploaded to the principal contractor's site management system for record retention.

Related legislation

• WHS Act 2011 (model)
• WHS Regulation 2025
• Construction Work CoP; Managing the Risk of Falls at Workplaces CoP

Frequently asked questions