Salt Air and Your Garage Door: Stopping Rust, What to Rinse, and Warranty Conditions

Question 01

Which garage door parts rust first near the beach?

The moving steel goes first. That's the springs, cables, rollers, hinges and the screws and brackets that hold the tracks. Salty air reaches them every time the door opens, and the salt holds onto moisture. The bottom rail and the foot of each track cop it too, because salty grit and water collect at ground level.

BlueScope, the company behind Colorbond steel, names garage doors among the spots that need regular washing. Its care bulletin says dust and salt build up where rain doesn't reach. That build-up soaks up condensation and can start corrosion, and it's worse near the sea.

Check what's above the door too. B&D's warranty excludes damage from a door missing regular washing by rain. That includes any door under an eave, carport, patio or verandah reaching more than 600mm out from the wall. If a deep eave or a carport keeps the rain off your door, it needs the hose more often.

Question 02

How can I fix rust on my garage door?

It depends where the rust is. Light marks on the door face are a cleaning job you can usually start yourself. Rust on springs, cables, rollers or tracks is technician work, because those parts carry the door's weight or hold spring tension. The table sorts it out part by part.

One warning if your door's still under warranty. Steel-Line's terms say putting rust treatments on anything other than painted or stained surfaces voids its warranty. Check your own door's paperwork before you reach for a rust converter.

Question 03

How often should I rinse my garage door near the beach?

At least every three months if salt spray reaches your street. BlueScope, which makes Colorbond steel, says to wash every six months as a minimum, or every three months on the coast where salt spray is common. B&D says every month or so, and more often in coastal areas.

1. 01Close the door and switch the opener off at the power point, so nobody can run the door while you're near it. B&D says to disengage the opener before any cleaning.
2. 02Hose the outside of the door with fresh mains water. BlueScope says to skip hard bore water.
3. 03If grime stays on, wash with a mild soap or dishwashing liquid in warm water. Use a sponge, soft cloth or soft nylon brush.
4. 04Rinse the soap off straight away with fresh water.
5. 05Wipe the salt and grit out of the tracks and off the bottom seal with a damp cloth.
6. 06Keep water away from the opener and its wall button. Steel-Line's warranty doesn't cover electrical parts damaged by liquid or moisture.

BlueScope's tip is to do the garage door when you wash the car, water restrictions permitting. Steel-Line's roller door manual says the same. Easy to remember.

Question 04

Can I use WD-40 on my garage door?

The door makers don't agree, so check your manual first. B&D says no and calls WD-40 a solvent. Gliderol's FAQ says to avoid it, though its maintenance page lists it for panel door hinges. All three makers want grease kept out of roller door guides.

WD-40's maker says its Multi-Use Product is a blend of lubricants with anti-corrosion agents, though it isn't a grease. The name means Water Displacement, perfected on the 40th try. So the bigger question is where any oil or spray goes on a garage door. The makers' advice, part by part:

• Roller door guides: keep grease out. Gliderol says wipe them clean and use a silicone-based spray only. Steel-Line says keep them free of oil and grease.
• Sectional door hinges and steel rollers: B&D suggests an all-purpose machine oil twice a year, with the extra wiped off so dust doesn't stick.
• Nylon or plastic rollers: leave them dry. B&D and Gliderol both say not to lubricate them.
• The lock: B&D says skip it, since grease can stop it working.
• Springs: leave them for the service. Steel-Line's roller door manual calls greasing the springs a dangerous job.

Doors under a Steel-Line warranty have one more rule. Steel-Line says cleaning and lubricating the guides, roller wheels and bearer plates should only be done by Steel-Line or an approved service partner. It also warns that the wrong lubricant can wear the door faster.

Question 05

Does salt air void my garage door warranty?

It can take salt damage out of the cover. All three makers' warranties exclude damage linked to living near salt water. B&D's line is 1 km from a marine environment. Steel-Line and Gliderol draw theirs at 800 metres from the sea. Some also set washing or servicing conditions you have to keep.

Start with the distance. If you live within a kilometre of the surf, read your door's warranty closely. Steel-Line and Gliderol also count any "other body of water of equivalent or greater salt concentration", so a canal or river home may be caught too.

The parts that rust first have short cover anyway. B&D's brochure gives seals, springs and lifting cables one year. Steel-Line gives springs one year. Gliderol gives three months on spring tension. So on a door a couple of years old, a rusted spring is usually just a repair.

Then there's who does the service. B&D asks for a B&D Representative, Steel-Line for its own team or an approved partner, and Gliderol recommends its authorised distributors or technicians. If your door is still inside its warranty years, check that before you book anyone. All three say your rights under the Australian Consumer Law still apply.

Other makers word it differently. Find your own door's paperwork and read the salt clause before you need it.

Question 06

How often should a coastal garage door be serviced?

Deadlock's default is once a year, or every six to nine months for a door that runs many times a day. Near the surf, don't stretch it. Steel-Line's roller door manual asks for preventive maintenance at least every six months, and more often when conditions call for it.

Much of that six-monthly care is the cleaning above. Gliderol's maintenance page asks for a panel door service every two years, and more often for coastal homes.

Every Deadlock service covers five checks: spring tension and balance, roller and track lubrication, hardware tightening, cable and drum inspection, and a test of the opener and its safety reversal. On a salty door, those checks catch rust early. The full checklist and intervals sit with our coastal garage door service.

Repairs and servicing are booked as a callout valued between $200 and $300. The value depends on the door size and the labour involved. Thom works 6am to 6pm, seven days, across the Sunshine Coast, from Kings Beach and Moffat Beach up to Marcoola. Call 0402 882 653 or book a callout.

Question 07

When does rust mean repair or a new door?

Rusted springs, cables, rollers and fixings are repair jobs. B&D's warranty brochure says a regular service replaces seals, springs and lifting cables as they wear. It's a bigger call when the door itself is rusting through, like holes in a roller curtain or a crumbling bottom rail. Then weigh the repairs against the door's age.

Rusted parts are fixed under Deadlock's garage door repairs. A spring that's rusted and lost its lift is a garage door spring repair. For what repairs cost, read the garage door repair costs guide.

If the door has taken a knock as well, dented garage door repair covers panels and insurance. How long garage doors last helps you judge when a door's worn out. And the door types guide explains roller, sectional and tilt doors if you're weighing up a new one.