Garage door maintenance advice written for the rest of the country is mostly about cold. Here the enemies are salt, humidity and heat, and the checklist looks different.
Do this twice a year. A good rhythm is once before hurricane season starts in June, and once after it ends in November.
1. Watch and listen to a full cycle
Stand inside, open the door, close it, and pay attention. You are looking for jerking, hesitation, a section that lags, or a change in the noise. A door that used to be smooth and now hitches is telling you something before it fails.
2. Do the balance test
Pull the release cord to disconnect the opener. Lift the door by hand to waist height and let go. It should stay put.
Drops? Springs are weak. Rises? Over-tensioned. Either way the opener is compensating on every cycle and will not last. Book a spring adjustment before it becomes a spring replacement plus an opener.
Re-engage by pulling the cord toward the door and running the opener until it clicks in.
3. Test the safety reverse — both kinds
Photo-eye test. With the door closing, wave a broom handle through the beam near the floor. The door must stop and reverse immediately.
Contact reverse test. Lay a roll of paper towel or a length of 2×4 flat on the floor in the door’s path and close the door onto it. The door must reverse on contact.
If either test fails, stop using the opener until it is fixed. These are the systems that stop a door closing on a child or a pet.
4. Lubricate the moving parts
Use a proper garage door lubricant — silicone or lithium-based spray. Do not use WD-40 as a lubricant. It is a solvent: it will clean and displace, and then leave the part drier than it was.
Lubricate: hinges at the pivot points, roller stems and bearings, the torsion bar end bearings, and the opener chain or screw (not a belt).
Do not grease the tracks. Tracks should be clean and dry — grease there collects grit and turns into a grinding paste. Wipe them out with a rag.
5. Check the hardware for corrosion
This is the South Florida-specific step and the one most people skip. Go along the door with a flashlight and look at:
- The bottom brackets, which carry the cables and take the worst of the standing water.
- Hinges between sections, especially the bottom two.
- The lag bolts holding the track brackets to the jamb.
- The torsion spring itself, for surface rust.
Rust bloom on a bracket is a warning. A bolt you can turn with your fingers is a failure waiting to happen. Bottom brackets in particular are under cable tension — do not loosen them yourself.
6. Tighten what is safe to tighten
Doors vibrate a few thousand times a year and hardware loosens. You can safely snug up hinge screws and track bracket bolts with a socket. Do not touch the bottom bracket bolts and do not touch anything on the torsion assembly.
7. Inspect the cables — visually only
Look for fraying, kinking or rust where the cable meets the drum. A cable with broken strands is close to failing. Do not attempt to adjust or re-seat a cable; they are under full spring tension.
8. Check the bottom seal
The rubber astragal along the bottom perishes in UV and heat. A failed seal lets in water, insects and heat, and lets the bottom section sit in moisture. Replacing it is inexpensive and makes an obvious difference to how the garage feels.
While you are there, check the weatherstripping down the sides and across the top.
9. Clean the door face
Within a few miles of the coast, rinse the outside of the door with fresh water a few times a year. Salt deposits sit on the surface and start corrosion under the paint. This is the cheapest thing on this list and it genuinely extends the life of a steel door.
10. Check the opener’s battery backup
If your unit has one, test it. Unplug the opener and run the door. A backup battery that has quietly died is no use in an outage, and batteries in hot garages have a shorter life than the spec suggests. Most need replacing every three to five years.
Before hurricane season specifically
- Confirm the door is secure in its tracks and the jamb anchors are sound.
- If you have a bracing kit, check the fittings are present and you know how to fit it.
- Clear the tracks and the area around the bottom seal.
- Know how to release and manually secure the door if power is lost.
What to leave to someone else
Springs, cables and bottom brackets. All three hold or transfer the door’s full weight through stored tension. Everything else on this list is homeowner-safe.
Common questions
How often should a garage door be serviced professionally?
Once a year for a door in regular daily use, alongside the homeowner checks above. Coastal properties benefit from that annual visit more than inland ones.
What lubricant should I actually buy?
A silicone or white lithium garage door spray. Avoid WD-40 and avoid heavy grease, which collects grit.
My door is noisy but works fine. Is that a problem?
It is usually worn rollers or dry bearings, and it is worth fixing early because the noise is friction and friction is wear. Nylon rollers are a cheap and very noticeable upgrade.
Does rinsing the door really help?
Near the coast, yes. Salt sitting on painted steel is what starts the corrosion that eventually perforates the bottom section.
Need someone to look at it?
SHL Garage Door covers Miami-Dade, Broward and Palm Beach County. Most repairs are same-day or next-day, estimates are free, and you get the full price before we start.
Call (305) 897-7662 or send us the details.
Service pages: Miami · Hialeah · Fort Lauderdale · Boca Raton · West Palm Beach