Water is the enemy of watch movements. Even small amounts of moisture can cause corrosion that destroys delicate components. Here's how to identify water damage—and what to do if you spot it.
Visible Signs of Water Damage
Condensation under the crystal: The most obvious sign is fogging or water droplets visible inside the watch. This might appear suddenly after temperature changes or gradually over time. Any condensation—even a tiny amount—indicates a breach in water resistance.
Dial discoloration: Water damage often shows as spots, stains, or color changes on the dial. You might see rust-colored marks, white mineral deposits, or areas where the dial finish has lifted or bubbled.
Corroded hands: Watch hands are often among the first components to show corrosion. Look for pitting, discoloration, or a rough texture on the hands, especially near their bases.
Warning Signs to Watch For
- Fogging or condensation under the crystal
- Spots or discoloration on the dial
- Rust or corrosion on hands or indices
- Watch running erratically or stopping
- Crown feels gritty or difficult to turn
- Musty smell when opening the caseback
Performance Warning Signs
Erratic timekeeping: If your previously accurate watch suddenly gains or loses significant time, water damage could be affecting the movement. Moisture can cause hairsprings to stick, balance wheels to rust, and lubricants to fail.
Stopping and starting: A watch that stops randomly or won't run consistently may have water damage affecting the gear train or escapement.
Sluggish hands: If the second hand seems to stutter or the hands don't move smoothly, corrosion could be causing friction in the movement.
The Crown Test
A crown that feels gritty, stiff, or difficult to screw down may indicate water has entered through the crown tube. On screw-down crowns, the threading should feel smooth. If it feels rough or requires unusual force, have it inspected.
Hidden Damage
Sometimes water damage isn't immediately visible. Humidity can enter a watch without leaving obvious signs until corrosion has already begun. If you suspect your watch may have been exposed to moisture—even if it looks fine—consider having it inspected by a professional.
A watchmaker can open the case, inspect the movement under magnification, and identify early-stage corrosion before it becomes a major problem.
Immediate Action Steps
If you spot signs of water damage, time is critical. Don't wait—corrosion begins immediately and accelerates over hours and days. Stop wearing the watch, don't try to operate the crown or pushers, and get it to a watchmaker as soon as possible.
For fresh water exposure caught immediately, some people place the watch in a container of dry rice or silica gel to absorb moisture. However, this is a temporary measure—professional service is still essential.
Prevention Is Key
The best approach to water damage is prevention. Have water resistance tested regularly, especially if you expose your watch to water frequently. Replace gaskets during service. Ensure crowns are properly screwed down. And be honest about your watch's capabilities—not every timepiece is meant for water exposure.