Damp is the number-one cause of winter damage to caravan interiors — soft panels, black mould, musty smells and expensive repairs. The good news is it’s largely preventable. Here’s how to keep a stored caravan dry through the cold months.
Why damp happens
Warm, moist air meets cold surfaces and condenses into water — and a van sealed up tight for winter traps that moisture inside, where it soaks into soft furnishings and panels.
Ventilate — don’t seal it up
Counter-intuitive but essential: leave roof vents cracked, cupboard and wardrobe doors open, the fridge door propped, and seat cushions stood on their edges so air can circulate around everything.
Use a dehumidifier
Refillable crystal dehumidifiers and moisture traps pull water out of the air and need no power — ideal for a van in storage. If you have a hook-up, a small electric dehumidifier does even more. Check and refill them through the winter.
Fix leaks before winter
Damp from a leak is far worse than condensation. Reseal tired window and seam sealant, and it’s worth a damp-meter check before you lay up so you fix problems while it’s dry.
Cut cold-surface condensation
Thermal window blinds and screens keep the coldest surfaces — the windows — warmer, so less moisture condenses on them. Simple, and they help keep the van warmer if you’re still using it.
Cover breathably
If you cover the van, make it a breathable cover. A non-breathable sheet traps moisture against the bodywork and makes damp worse, not better.
Ventilate, dehumidify and seal out leaks, and you’ll open the door in spring to a fresh, dry caravan instead of a mouldy one.
Keep your caravan dry
Dehumidifiers, care and thermal kit to beat winter damp.