ROUTINE MAINTENANCE
Use caution when working on the top of your
motorhome. The wet roof might be
extremely slippery and, as such, a possible
safety hazard.
MOISTURE MANAGEMENT
This section outlines important recommendations to manage moisture in your motorhome to avoid
moisture-related damage, such as mold. The materials and methods used to construct your motorhome
were selected in part to minimize air leakage and to create a weather-tight exterior shell. However, in
order to protect your investment, and reduce the risk of moisture-related damage and costly repairs,
attention and care has to be taken to manage moisture inside your RV.
NOTE: These are only suggestions intended to minimize moisture-related issues with your
motorhome. If any concerns arise, contact Tiffin Motorhomes’ Service Department at
(256) 356-0261.
INTERIOR CARE OF YOUR RV
Signs of excessive moisture can be obvious, such as water droplets forming on surfaces or wet carpet.
Conversely, signs of excess moisture can be subtle, such as condensation forming on metal surfaces.
When symptoms appear, it is important to immediately determine the cause of the excess moisture and
take appropriate corrective action to prevent moisture-related damage.
CONTROL RELATIVE HUMIDITY
Monitoring and controlling relative humidity within the motorhome is one of the most important steps
to minimize the risk for moisture-related damage. Ideally, relative humidity should be at 60% or less.
Relative humidity can be monitored utilizing a portable hygrometer, which is a small device that
measures temperature and relative humidity.
Use exhaust fans, the air conditioner, and/or a portable dehumidifier to manage moisture inside the RV
to maintain relative humidity at 60% or less. In cold climates, relative humidity might need to be at 35%
or less to avoid window condensation issues. If the motorhome is used, the majority of the time in a hot,
humid climate, it might be difficult to keep relative humidity below 60%. A dehumidifier will help, but
check the condensation (water) collection bucket regularly or discharge the condensation (water) directly
to a drain.
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