Which type of damage is more damaging: fresh water or salt water?

Salt water is generally considered more damaging than fresh water due to its corrosive properties. When vehicles are exposed to salt water, especially in coastal areas or from flooding, the salt accelerates rust and corrosion processes on metal surfaces. The presence of salt creates an electrolyte solution, which increases the rate of oxidation on various components of the car, such as the frame, engine parts, and electrical systems.

In contrast, while fresh water can cause damage through processes like water ingress leading to mold or mildew, as well as rusting, it does not have the same corrosive effect as salt. Additionally, fresh water typically evaporates more quickly, allowing for easier remediation and less prolonged exposure compared to salt water.

Understanding these differences is crucial for automotive damage appraisers when assessing vehicles affected by water damage, as it can significantly impact their evaluation and the potential costs associated with repairs.