Preparing your caravan for winter is an essential part of keeping it safe through the colder months. Long periods of cold and damp can create many problems if the caravan is not prepared for storage correctly. Pipes can freeze, seals can dry out, batteries can lose power and tyres can develop flat spots from staying still for too long. These issues often appear when you take the caravan out again in spring, and many of them are avoidable with a careful winter routine.
A steady and organised approach makes all the difference. Cleaning the exterior, draining the water system, protecting the interior from damp and placing the caravan on level, secure ground helps it stay in good condition while it is not in use. At 3A’s Leisure we see how proper winter storage prevents unnecessary costs and gives peace of mind during the off season.
This guide explains each step in a clear and practical way so you can store your caravan confidently and protect it until you are ready for the next touring season.
How To Prepare Your Caravan For Winter
Choose a Secure, Level Storage Location
The place you choose for winter storage plays an important role in how well your caravan will cope with cold weather. A good storage site offers protection from theft, falling debris and long term damp.
Many owners choose CaSSOA approved storage sites because they provide strong security features. These often include gated access, CCTV, lighting and controlled entry. If you prefer to store your caravan at home, use a hardstanding or driveway that keeps the caravan level and stable. Avoid areas under trees because falling branches, wet leaves and moss can damage the roof or block vents.
Once you have chosen the location, make sure the caravan sits on flat and firm ground. Lower the corner steadies onto solid blocks to support the chassis and keep the caravan stable. Leave the handbrake off because it can seize in damp winter conditions when unused for long periods. A wheel clamp and hitch lock add extra protection and also help with some insurance requirements.
It is worth checking your insurance policy before deciding on a storage location. Some insurers expect the caravan to be kept at a recognised site, while others ask for specific locks or security measures. A quick review now can prevent gaps in cover later.
Helpful reminders:
- Pick a secure site with good lighting and CCTV
- Keep the caravan clear of overhanging branches
- Support the caravan on level ground
- Use clamps and fit a hitch lock for added security
Clean and Protect the Exterior
A clean exterior gives the caravan better protection over winter. Dirt, road film, bird droppings and salt can hold moisture against the bodywork, which may lead to staining or corrosion. Use a caravan safe cleaner to wash the exterior from top to bottom, then rinse and dry it well. Take your time around joints and seals because water often collects there.
Once the caravan is clean, apply a protective wax or an overwintering treatment made for caravans. This creates a thin barrier that helps rainwater run off and reduces the build up of dirt during the winter months.
Windows, doors and rooflights also need attention. Clean around the frames and glass, then apply a silicone spray to rubber seals to keep them flexible. Cold weather can make seals stiff, and silicone helps prevent cracking. Lock the windows and rooflights securely so they stay watertight.
Do not forget the roof. Remove leaves, twigs and moss, and give the gutters a quick clean. Check for signs of wear or any small gaps where water might enter. Clear the roof vents but allow a little airflow to prevent condensation inside the caravan.
Key steps:
- Wash the exterior with a caravan specific cleaner
- Apply wax or an overwintering product
- Clean and lubricate window and door seals
Deep Clean the Interior
A clean interior helps prevent damp and keeps the caravan fresh during long term storage. Start by removing all food, drinks, toiletries and rubbish. These items attract pests and can create unpleasant smells if left for months. Vacuum the carpets, upholstery and soft furnishings to remove dust and crumbs.
Clean the kitchen area with antibacterial spray and wipe inside all cupboards and drawers. Make sure the fridge and freezer are completely empty, then clean them with a mild solution like bicarbonate of soda and water. Leave the doors slightly open so air can move through them during storage.
Soft furnishings are more comfortable if stored in a warm, dry place. Remove bedding, pillows, curtains and cushions where possible. Store them indoors to prevent damp patches or mould. If you cannot remove mattresses or seat cushions, stand them upright or angle them so air can circulate around the fabric.
Moisture control is important inside a closed caravan. Place moisture absorbers in key areas such as the kitchen, wardrobes and bathroom. A few simple packs can make a big difference in keeping the air dry and preventing musty smells. Leave internal doors, cupboards and lockers open so the air can move freely around the interior.
Interior tips:
- Remove soft furnishings where practical
- Leave fridge and freezer doors open
- Use moisture absorbers in key areas
Drain Water Systems and Sanitize Plumbing
Water left in pipes or tanks can cause major damage if it freezes. Draining the water system fully is one of the most important steps in winter preparation.
Start by emptying the fresh water tank, grey water tank and water heater. Open all taps on both hot and cold settings to allow water to drain through. Many caravans also have drain plugs or valves under the floor or near the heater. These need to be opened so any remaining water can escape.
If your caravan has an external shower or water connection, drain those parts too. Some owners run the water pump briefly to help push out the last drops, but check your caravan’s manual first to make sure the pump can operate dry for a short time.
The toilet cassette also needs cleaning. Empty it, rinse it and then leave the blade open during storage. A small amount of fresh water and toilet fluid can be added if you prefer, but do not fill the cassette.
If you want extra protection, you can add a small amount of non toxic antifreeze to the waste tanks. This can help prevent freezing in very cold weather.
In spring, the entire system should be flushed with a sanitising product to clear any remaining bacteria or residue.
Helpful reminders:
- Drain all tanks, pipes and heaters
- Open all taps to release trapped water
- Rinse and store the toilet cassette with the blade open
Remove Gas and Electrical Hazards
Gas bottles should be turned off and removed from the caravan before winter. Store them in a cool and well ventilated space outdoors, away from ignition sources. Some storage sites do not allow gas bottles to remain inside the caravan, so check their rules in advance.
Make sure all internal gas taps are switched off. If you have concerns about leaks or fittings, book a gas safety check before storing your caravan. Any caravan servicing centre should be able to do this for you.
The leisure battery needs attention as well. Disconnect it, clean the terminals and charge it fully. Store the battery indoors in a cool and dry place. If you prefer to leave the battery in the caravan, use a trickle charger to maintain its charge because cold weather drains batteries quickly. Smaller batteries in clocks, smoke alarms and carbon monoxide detectors should be removed and replaced with fresh ones when the caravan comes back into use in the spring.
Apply a protective spray to the caravan’s electrical plug to prevent corrosion during storage.
Check Tyres, Chassis and Brakes
Tyres can suffer from long periods of inactivity. Before storage, inspect them for cracks, wear or damage. Inflate them to the recommended pressure, then place wheel chocks on both sides of each wheel to stop the caravan moving. Lower the corner steadies onto firm blocks so that the weight of the caravan is supported evenly.
Leave the handbrake off. A handbrake under tension for months can seize, which causes problems when the caravan is moved again. If possible, move the caravan a short distance every few weeks to rotate the tyres. This helps prevent flat spots and keeps the tyres in better condition. If moving it is not practical, rotate the wheels slightly by jacking the caravan up, as long as it is safe to do so.
Do not forget the spare tyre. Check its pressure and make sure it is stored properly.
A quick look over the chassis and stabiliser mechanism is also useful. Apply grease to moving parts to keep them free and ready for use in spring.
Manage Ventilation and Moisture
A small amount of airflow is important during winter storage. If your storage site allows it, leave roof vents slightly open. Cupboards, wardrobes and internal doors can also be left open so air can move through the caravan.
Fit a breathable caravan cover once everything is dry. A good cover protects the caravan from rain and frost while still allowing moisture to escape. Avoid plastic sheets because they trap condensation.
Moisture absorbers placed around the interior help control dampness through winter. In very damp locations a small dehumidifier can help, but only if power is available and safe to use.
Check on the caravan every few weeks to make sure airflow is still good and the cover is secure.
Final Checks and Professional Servicing
Before locking up the caravan for winter, walk around it one last time. Make sure all windows and rooflights are secure, vents are set as needed and exterior lockers are closed. Remove any cables, tidy loose items and confirm that all taps, appliances and lights are off.
If you are unsure about any part of the winter process, a professional service can help. The Service Centre at 3A’s Leisure offers full winter checks, including damp inspections, gas and electrical testing and chassis checks. A winter service provides reassurance that your caravan is safe, dry and ready to face the colder months.
Ready for the Next Season
Proper winter storage protects your caravan from avoidable damage and protects the lifespan of a caravan. A careful routine keeps it clean, dry and secure until spring. When the warmer weather returns, your caravan will be ready for fresh trips without the need for costly repairs or unexpected setbacks.
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