How to Clean a Caravan or Motorhome Before a Trip

A caravan or motorhome that's been in storage between trips — whether for weeks or months — needs specific attention before departure that goes beyond a quick wipe-down. The confined space concentrates dust, the storage period often introduces a musty smell in your home from limited ventilation, and the specific systems (water tanks, fridge, toilet/cassette) need their own checks and cleaning that have no equivalent in standard home cleaning.

South Australia's caravan and motorhome ownership rate is among the highest in the country, and the Adelaide region's proximity to popular touring routes (the Riverland, Flinders Ranges, Eyre Peninsula, and interstate routes) means many owners are doing this pre-trip routine regularly throughout the year.

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Step 1: Air It Out First

Before any cleaning, open everything — windows, roof vents, and the main door — and let the van air out for at least an hour, ideally longer. Storage periods, particularly if the van has been sealed up, allow musty air and trapped moisture to accumulate. Starting with fresh air movement makes the whole subsequent cleaning process more pleasant and helps you actually notice odours that need specific treatment.

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Step 2: Check for Mould and Moisture Issues First

Before general cleaning, specifically check the areas most prone to mould development during storage:

Window and skylight seals: Check for any black mould spots, which develop readily in the condensation-prone seal areas of caravan windows, particularly if the van was stored without adequate ventilation.

Under seating and bed bases: Lift cushions and check underneath — these enclosed spaces with limited airflow are a common mould development site, especially if any damp items were stored there or if humidity was an issue during storage.

Wardrobe and storage cupboard interiors: Check corners and the back panels of built-in storage for any mould development.

Fridge interior and seal: If the fridge wasn't fully cleaned and dried before storage (a common oversight — even leaving the door slightly ajar during storage is standard advice precisely to prevent this), mould can develop in the fridge and around the door seal.

If mould is found, treat it per our bathroom mould guide principles — appropriate dwell time with a diluted bleach or specific mould treatment, followed by thorough drying. Address mould before proceeding with general cleaning, as it affects priority and product choice for nearby surfaces.

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Step 3: Kitchen Area

Benchtops and sink: Wipe down thoroughly — even unused surfaces accumulate dust during storage.

Stovetop: Check for any residual grease from the last trip's cooking and clean per our stovetop cleaning guidance if applicable to your caravan's cooktop type.

Fridge: If not already addressed in the mould check above, give the interior a full wipe-down with a mild solution (similar to our home fridge cleaning guide principles, adapted to the smaller caravan fridge format). Check that the fridge is running correctly on both gas and electric modes (if applicable) before departure, as this is also the ideal time to verify functionality.

Cupboards: Wipe interior shelves and check for any pantry moth activity or evidence of mice (a genuine concern in caravans stored for extended periods, particularly in semi-rural storage locations around Adelaide) — any food items left from a previous trip should have been removed before storage, but checking and clearing any overlooked items is an important pre-trip task.

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Step 4: Bathroom/Toilet Area

Cassette toilet (most common in caravans): Empty and thoroughly clean the cassette if this wasn't done immediately after the last trip (best practice, but not always followed). Use a dedicated cassette toilet cleaner — these are formulated to be safe for the cassette mechanism and seals, unlike standard household toilet cleaners which can damage caravan toilet components over time.

Shower (if fitted): Check for mould in the shower recess and any soap scum residue from the last trip. Clean per standard bathroom cleaning principles, scaled to the caravan's compact shower space.

Water tank/system: Before a trip, particularly after an extended storage period, flush the fresh water tank and lines. Stagnant water sitting in tanks during storage can develop bacterial growth and an unpleasant taste/smell. A caravan-specific tank sanitising treatment (available at caravan supply stores) flushed through the system addresses this — follow the product's specific instructions for dwell time and flushing volume.

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Step 5: Living and Sleeping Areas

Upholstery: Vacuum all seating and bed surfaces thoroughly — caravan soft furnishings accumulate dust significantly during storage given the confined, often less-ventilated environment compared to a house.

Floors: Sweep and mop or vacuum, depending on flooring type — caravan flooring (often vinyl or a thin carpet) needs the dust and debris from storage cleared before departure.

Windows: Clean both interior and exterior glass — a caravan's windows accumulate dust during storage and the exterior often has road grime from the last trip that wasn't addressed.

Curtains/blinds: If fitted, a quick check for any mould development (particularly relevant for fabric curtains in enclosed storage) and a wipe-down or wash if needed, per our venetian blind principles if applicable to your caravan's window covering type.

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Step 6: Storage Compartments and Underneath

External storage compartments (often called "boot" or "tunnel boot" storage) accumulate dust, sometimes moisture, and occasionally pest activity (spiders are common given the dark, enclosed nature of these spaces).

1. Clear cobwebs and check for any insect or rodent activity.
2. Wipe down interior surfaces.
3. Check seals on storage compartment doors/hatches for any deterioration that could let moisture or dust in during the upcoming trip.

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Step 7: Exterior

Body wash: A caravan or motorhome's exterior accumulates significant dust during storage and from the last trip's travel. A standard vehicle wash approach — rinse, wash with a vehicle-safe detergent, rinse thoroughly — works for most caravan exteriors.

Awning: If fitted, check for any mould development on the awning fabric (a common issue if it was rolled away even slightly damp after the last use) and clean per outdoor fabric principles — a mild detergent solution, scrubbed gently, rinsed thoroughly, and allowed to fully dry before re-rolling for the upcoming trip.

Solar panels (if fitted): Many modern caravans have roof-mounted solar panels for off-grid capability. Clean per our solar panel cleaning guide principles — dust accumulation during storage directly affects charging performance for the upcoming trip.

Tyres and undercarriage: While not strictly cleaning, a visual check for any pest nesting (mice are notorious for caravan undercarriage and wheel well nesting during storage) is worth doing alongside the exterior wash, as this affects both hygiene and mechanical safety for the trip.

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Pre-Departure Final Checks

Beyond cleaning specifically, the same session is a practical opportunity to check:

• Gas bottle levels and connections
• Battery condition and charge
• Water tank fill levels
• Smoke alarm and gas detector function (if fitted)
• Fire extinguisher condition and currency

These aren't cleaning tasks, but they're naturally bundled into the same pre-trip preparation routine and worth addressing while everything is open and accessible.

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For general cleaning advice and services across Adelaide, including pre-trip vehicle and caravan interior cleaning, contact PF Cleaning Adelaide.

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Written by Victor Jacon — Master Cleaner & Home Detailing Specialist, Founder of PF Cleaning Adelaide.