01/09/2026
What Causes Corrosion in a Leisure Vehicle?
When we discuss corrosion with customers, many understandably state that there has been no water ingress, leakage, or liquid spillage within their vehicle - and in many cases they are absolutely correct.
Corrosion does not necessarily require a visible leak or spillage. One of the most common and overlooked causes is condensation.
Condensation occurs when warm, moisture-laden air comes into contact with colder surfaces within the vehicle. This can result in microscopic or invisible moisture deposits forming on metal components, fixings, chassis sections, electrical connections and other vulnerable areas. Over time, repeated exposure to moisture can initiate oxidation and accelerate the corrosion process.
Leisure Vehicles are particularly susceptible because they are relatively enclosed environments. Occupants introduce additional water vapour simply through normal activities such as breathing, cooking and drying damp clothing. In colder conditions, the temperature difference between the interior air and the vehicle structure can significantly increase the potential for condensation.
There are moisture-absorbing products which can help control humidity in specific areas but should not be considered a complete solution. The most effective approach is controlled, targeted ventilation combined with regular air circulation. Allowing moisture-laden air to escape and replacing it with drier air helps reduce relative humidity and limits the amount of moisture available to condense on cold surfaces.
And yes - breathing a little less may help too!!
Please check your electronic units, picture below for reference.
