Condensation is a common issue in leisure vehicles such as motorhomes and caravans. It occurs when moist, warm air meets cold surfaces such as windows, walls or roof hatches. As many of these vehicles are very well sealed, moisture cannot escape, which leads to the accumulation of water in cool areas and can cause damage in the long term.
Causes and risks
Condensate may seem harmless at first glance, but it harbours serious risks. Permanently damp surfaces create an ideal environment for mould growth, especially in poorly ventilated corners, behind furniture or under mattresses. Materials such as wood panelling, upholstery or electrical components can be damaged by constant moisture, leading to visual and functional defects and unpleasant odours. Especially after sleeping, condensation is often visible on steamed-up windows or damp mattresses, which can affect comfort.
Why does condensate form during sleep?
During sleep, the human body releases between 0.5 and 1 litre of water into the environment through the skin and breathing. In the confined spaces of a motorhome or caravan, this release of moisture quickly leads to the formation of condensation. This preferentially collects on cooler surfaces such as windows and mattresses, especially if there is insufficient ventilation.
Measures to prevent condensation
- Täglich lüften: Open windows or roof hatches for 5-10 minutes to exchange humid indoor air for dry outdoor air.
- Increase temperature: Warmer indoor air absorbs more moisture and reduces condensation.
- Reduce sources of moisture: Open windows or use a fan when cooking or showering. Do not dry wet clothing in the interior.
- Ventilate the sleeping area: Slatted frames or special underlays under mattresses help to prevent moisture build-up.
- Use a hygrometer: Keep the humidity between 40 % and 60 %.
- Insert the dehumidifier: Use mobile electrical devices or granulate dehumidifiers to bind moisture.
- Do not store objects directly on external walls: Clothing and upholstery should be kept away from cold surfaces to prevent condensation from forming.
- Also ventilate during downtimes: Leave windows ajar and ventilate regularly.
Special tips for winter camping and longer periods of standstill
Special care should be taken when winter camping or when the vehicle is not in use for a longer period of time. Insulating mats for windows and doors help to avoid thermal bridges. Even in cold temperatures, ventilation should be regular and dehumidifiers should be used. Sources of moisture should be avoided where possible or well ventilated.
⚠️ Safety note
Be vigilant for signs of mould or moisture in the interior of your brush. Both can jeopardise your health, so it is important to recognise and rectify problems at an early stage.
💡 Our tip
Not every drop of water in the interior of your brush is a sign of a leak. Nevertheless, we recommend that you ventilate regularly and carry out a leakage test every year to ensure that your vehicle is optimally protected against moisture.
This website uses automatic translations. Please excuse any errors. In case of doubt, the original German version applies.