Heavy rainfall is an unavoidable part of UK travel, especially during autumn and winter months. While a little rain can add to the fun, prolonged wet weather can quickly cause problems if your campervan is not properly protected. From damp interiors to electrical issues and long-term structural damage, water ingress is one of the most common, and costly issues faced by motorhome owners. Here at UK Leisure Parts, we know that prevention is always better than repair. With the right preparation and a few essential upgrades, you can keep your campervan dry, comfortable, and road-ready no matter what the weather brings.
Check seals, trims and entry points
Water usually enters a campervan through small gaps that are easy to overlook, such as cracks, doorways, windows, etc. Before the wet season arrives, inspect all door seals, window rubbers, trims, and tailgate seals. Over time, these components can crack, shrink or loosen, allowing rainwater to seep inside. It is important to pay particular attention to sliding doors and rear doors, as these areas see the most movement and wear. Replacing tired seals and trims early can prevent damp patches, mould, and unpleasant odours in the future.
Inspect the roof
Your campervan roof takes the most of heavy rainfall. Roof lights, vents, solar panel mounts, aerials, etc. are all potential leak points if the sealant deteriorates. Check for signs of cracked sealant, water staining, or soft spots. Clearing debris from drainage channels can also help prevent standing water from building up during prolonged rain. A simple inspection can save you from expensive repairs in the future.
Protect windows and reduce condensation
Windows are a common source of both leaks and condensation. Thermal screens and blackout curtains provide an effective barrier against cold glass surfaces, reducing moisture build-up inside the van. These additions can not only improve insulation but also protect interior panels and electrical components from damp conditions.


Waterproof surfaces
Wet weather can also quickly take its toll on your motorhome’s interior. Investing in waterproof covers for your seats, floors and even surfaces, can help to protect original upholstery from moisture, stains, and wear. Rubber floor mats and washable curtains can also help contain moisture and prevent it spreading through the living space.
Safeguard electrical systems
Electrical systems are particularly vulnerable to moisture. Check that all cable entry points are sealed, fuse boxes are dry, and sockets are protected from any condensation. If you notice flickering lights or corrosion around terminals, address it immediately.Keeping the interior dry with proper ventilation and moisture control can help protect your electrics and maintain reliable power.
Ventilation
It may seem counter-productive, but good ventilation is also essential in wet weather. Opening roof vents, doors or windows slightly can allow moist air to escape, reducing condensation and mould. Balanced airflow can keep your campervan healthier and more comfortable during long spells of rain.
Heavy rainfall doesn’t need to put a stop to your travels. With regular checks and practical interior protection, you can stay dry, comfortable, and confident in the rainy weather. Here at UK Leisure Parts, we supply high quality services and interior accessories designed to protect your campervan in all conditions. A little preparation can go a long way. For more information on our products and services, visit our website today.
