Why coastal garage door springs fail early.

My grandfather worked on the boats. My father worked on the roofs. I work on the doors. Different trades, same problem: salt finds everything.

If your spring or cables failed in under seven years and you live near the water — English Bluff, Beach Grove, Marine Drive in White Rock, oceanfront West Van, the Steveston riverfront, anywhere in Ladner that smells like the Fraser at low tide — corrosion is the cause. Not the cycle count. Not the cold. Just chloride doing what chloride does to carbon steel.

What salt actually does to a spring

Garage door torsion springs are made of high-carbon steel. Galvanized springs get a thin zinc coating; oil-tempered springs come out of the tempering process with a dark, oily finish. Both work fine inland. Neither was designed for direct ocean air.

The salt arrives two ways. The first is salt mist — fine droplets of seawater that travel inland on the wind, dry on whatever surface they hit, and leave chloride behind. The second is high humidity, which holds chloride in solution against the metal for days at a time. The combination is more aggressive than either alone.

What happens at the molecular level: chloride ions break through whatever protective film is on the steel, then accelerate the oxidation reaction underneath. You get pitting — small rough patches that look like nothing — long before you see surface rust. Once pitting starts, the spring's fatigue life drops dramatically. A spring rated for 10,000 cycles in dry inland air might give you 6,000 or 7,000 in Tsawwassen.

The cables go first

It's almost always the cables, not the springs themselves. Cables are stranded steel wire, much thinner per strand than a spring coil, with much more surface area exposed per kilogram. They fray from the inside out. By the time you can see the fraying on the outside, the cable has already lost most of its strength.

I've personally pulled cables out of Tsawwassen garages that were six years old and disintegrated when I touched them. Same homeowner had bought "premium" springs from a previous installer — galvanized, advertised as "rust-resistant." The springs were fine. The cables had let go three weeks earlier and the homeowner hadn't noticed until the door dropped.

That's a $2,300 panel-and-tracks repair. All because nobody thought about the cables.

What we use instead

On every coastal install, we run two changes from the standard package:

1. Oil-tempered springs, kept oiled. No galvanized. A galvanized spring looks rust-proof on the shelf, but the zinc wears off where the coils rub, and in our experience the wire gives up sooner. Oil-tempered steel with a fresh film of oil on it holds up better. The cost difference is small. The lifespan difference is substantial.
2. Stainless steel cables for direct-water-view homes. Stainless costs roughly $40 more in parts than standard galvanized cables. On English Bluff in Tsawwassen, oceanfront White Rock, and the Steveston dyke, stainless lasts roughly twice as long. That's the right trade.

For homes a few blocks inland — central Tsawwassen, uptown White Rock, most of Richmond — the standard galvanized cables that come free with the two-spring tier are usually fine. We make the call on site based on the prevailing wind and how close you are to open water.

What you can do between service calls

Hose the hardware down with fresh water

Salt is water-soluble. A quick fresh-water rinse on the hardware (springs, cables, tracks, rollers) a few times a year, and after any big windstorm off the water, dissolves the chloride before it builds up. Don't soak the opener. Don't blast the seal. Just a low-pressure rinse with the garden hose.

Use silicone spray, not WD-40

Silicone-based lubricant on the hinges, rollers, and bearings provides a moisture barrier. WD-40 is a solvent and water-displacer, not a lasting lubricant — it strips protective oils and leaves the metal more exposed. Don't use it. (Dale has a whole post on this.)

Keep an eye on the cables

Open the door halfway, look at the cables on each side from a safe angle (don't reach into the spring area). Any visible fraying, rust spots, or one cable looking different from the other — call us. Cables usually give you some warning. If you hear a new noise when the door cycles, treat it as the first one.

Cities where we run coastal spec by default

• Tsawwassen — English Bluff, Beach Grove, Pebble Hill
• Richmond — Steveston, Terra Nova, Seafair, the West Dyke
• White Rock — East Beach, West Beach, Marine Drive
• Delta — Ladner Village, riverfront and Boundary Bay properties
• West Vancouver — Marine Drive, Caulfeild, Eagle Harbour

One phone call. Same family. Same number. And down here on the water, the same crew that's been replacing springs from Steveston to Ladner since before half of you moved to the peninsula.