Rain doesn't just sit on the surface of a lock, it works its way into the cylinder, and that's where the real damage happens.
Why Moisture Is So Damaging
Water that gets into the keyway or cylinder body starts corroding internal pins and springs, components too small and precise to tolerate rust the way larger hardware can. See common reasons locks fail for how this plays out over time.
Which Locks Are Most at Risk
Exterior locks without any overhang or awning protection, and hardware near the coast or marine layer (Toluca Lake, Universal City) see faster wear than covered or inland entries.
Cheap Hardware Corrodes Faster
Plated zinc finishes corrode noticeably faster than solid brass or stainless steel. See why cheap locks can cost you more.
What Actually Helps
- A weatherproof cover over exterior lock cylinders
- Regular graphite or silicone lubrication, moisture-resistant, unlike grease-based products that trap water
- Wiping down exterior hardware after heavy rain when practical
Signs Rain Has Already Done Damage
Stiffness, grinding, or visible rust are all signs to act on now. See signs your lock needs replacement.
Lock acting up after a storm? Call 818-249-5128, we'll check for water damage before it gets worse.