Rolling Shutter Maintenance: 8 Things to Do Every Year

A rolling shutter that is never maintained will fail sooner than one that gets annual attention. The repair cost when a spring breaks or a motor burns out is always higher than the cost of preventive maintenance. Here is the annual checklist our engineers use when servicing shutters.

1. Lubricate the Guide Rails

The guide rails on both sides of your shutter collect dust, grime, and dried-out lubricant over months of daily use. Clean the tracks with a dry cloth, then apply a thin coat of machine oil or grease to the rail surface. Do not use WD-40 as a substitute — it displaces moisture temporarily but does not provide lasting lubrication. Dry or dirty rails cause premature wear on the slat edges and increase motor load in motorized shutters.

2. Check and Lubricate the Bottom Profile

The bottom bar (astragal) should sit flush with the floor when closed and lift smoothly when opening. Check the rubber seal on the bottom for cracks or hardening. Replace if it no longer forms a clean seal — this prevents dust, water, and pests from getting under the shutter.

3. Inspect and Adjust Spring Tension

Manual shutters use torsion springs to counterbalance the curtain weight. When the spring tension is correct, the shutter should stay at any height you leave it at — not fall down or fly up. Signs of reduced spring tension: shutter is heavy to lift, drops faster than it should, or won't stay at half-height. Spring tension adjustment is a job for a trained technician — do not attempt to adjust torsion springs yourself.

4. Tighten All Fasteners and Brackets

Vibration from daily operation loosens wall plugs, guide rail screws, and spring housing brackets over time. Inspect all visible fasteners annually and tighten any that have worked loose. A bracket that fails under shutter weight can cause the entire curtain to fall — a serious safety hazard.

5. Test the Lock Mechanism

Push-up locks and cylinder locks should engage cleanly and release with the correct key. If the lock is stiff or catches, apply graphite powder (not oil — oil attracts dirt in locks). If the lock cylinder spins freely without engaging, replace it immediately.

6. Clean the Curtain (Especially Aluminium)

Aluminium shutters in urban environments accumulate a combination of exhaust, dust, and water stains. Clean annually with a mild detergent and water — a pressure washer on low setting works well. Avoid abrasive cleaners. After cleaning, inspect each slat for dents or bends that could catch in the guide rail.

7. For Motorized Shutters: Motor and Limit Switch Check

Motorized shutters should be serviced by a technician every 12–18 months. Key checks:

• Limit switch calibration — the shutter should stop precisely at fully open and fully closed without over-travel
• Motor current draw — a motor drawing more current than rated is straining (usually a lubrication issue)
• Remote/receiver battery and signal strength
• Emergency manual override — test it works smoothly even if you never use it in normal operation

8. Inspect for Rust on Non-Aluminium Shutters

Galvalume and GI shutters are corrosion-resistant but not corrosion-proof. Inspect for white rust (zinc corrosion) or red rust at cut edges and drilled holes annually. Treat any rust spots immediately with a zinc-rich primer and touch-up paint before they spread.

Signs You Need Immediate Service

Don't wait for the annual cycle if you notice: shutter is unusually heavy to operate, screeching or grinding noise from guide rails, motor runs but curtain doesn't move, shutter doesn't stay at any intermediate height, or the bottom bar drags on the floor. See our article on 5 signs your shutter needs repair.

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