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How to Stop Damp & Condensation in a Stored Caravan

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.

Previous article How to Winterise a Campervan (VW & Conversions)
Next article Best Caravan Covers: Breathable vs Non-Breathable & How to Fit One

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