Tips for Cleaning and Maintaining Your Motorhome Exterior – Keep It Looking Like New

Tips for Cleaning and Maintaining Your Motorhome Exterior – Keep It Looking Like New

Your motorhome is constantly exposed to the elements — from harsh UV rays and road grime to salt, bird droppings, and rain. Over time, these can dull the finish, corrode metalwork, and damage seals. 

Regular cleaning and protection not only improve the way your motorhome looks but also extend its lifespan and preserve its value. 

Follow these expert cleaning and maintenance tips from UK Custom Covers to keep your motorhome looking showroom-ready all year round. 

1) Use the Right Cleaning Products 

Always start with the correct products. Household detergents may seem convenient, but many strip wax, fade paint, or damage rubber seals. 

Choose: 

  • pH-neutral shampoos or cleaners made for caravans and motorhomes 

  • Soft-bristled brushes and microfibre cloths to avoid scratching 

  • Dedicated wheel and tyre cleaners for stubborn brake dust 

 Pro tip: Avoid washing in direct sunlight — high temperatures can leave streaks and water marks. 

2) Start from the Top and Work Down 

The golden rule of vehicle cleaning: roof first. 

Your roof collects the most debris, sap, and algae, which can run down and stain side panels if left untouched. 
Use a long-reach brush or extendable pole to scrub gently, paying close attention to roof lights, vents, and joints. 

Once clean, rinse thoroughly and work your way down the sides, doors, and wheel arches.

3) Tackle Stubborn Marks Safely 

Black streaks and bug residue are common issues for motorhome owners. To remove them without harming the surface: 

  • Use a non-abrasive cleaner designed for fibreglass or aluminium panels. 

  • Apply with a microfibre cloth, not a rough sponge. 

  • For tar or tree sap, a specialist bug & tar remover is safest. 

Avoid bleach-based products — they can discolour trims and seals. 

4) Dry Completely Before Covering 

After washing, always dry your motorhome thoroughly before fitting any cover. Trapped moisture encourages mildew and corrosion. 

Use soft towels or a water blade, and open doors and lockers briefly to allow internal ventilation. 

Once dry, fit your chosen protective cover: 

  • For full-body protection, choose a Motorhome Cover (Grey) — made from breathable 4-ply non-woven fabric with PU coating. 

  • For roof-only coverage, try our Motorhome Top Cover — ideal for driveways or shorter stops. 

Both options are waterproof, UV-resistant, and breathable, preventing dirt build-up and paint fade. 

5) Maintain Seals, Windows, and Trim 

Rubber seals and acrylic windows are particularly vulnerable to UV and cleaning chemicals. 

  • Apply silicone spray or rubber conditioner every few months to keep seals supple and watertight. 

  • Use a specialised acrylic cleaner or polish for windows — never glass cleaner, which can cause hazing. 

  • Wipe down chrome and plastic trim with a microfibre cloth to prevent oxidation. 

Regular care here helps stop leaks, drafts, and expensive repairs later on. 

6) Apply a Protective Wax or Sealant 

Once clean and dry, a high-quality wax or paint sealant adds a layer of defence against grime and UV rays. 
It makes washing easier next time and prevents black streaking from rainwater runoff.

Pro tip: Reapply every six months — or before long storage periods — for the best results. 

7) Use Breathable Protection Between Trips 

After cleaning, fitting a breathable cover keeps your hard work intact. 
A Motorhome Top Cover prevents dirt, sap, and bird droppings from undoing your efforts, while allowing air to circulate to avoid condensation. 

For long-term storage, use a Full Motorhome Cover to protect from frost, UV rays, and moisture during the off-season. 

Keep It Looking New Year-Round 

A consistent cleaning routine — paired with the right protective cover — will keep your motorhome gleaming and guard against wear for years to come. 

Discover more in our Motorhome Accessories collection for year-round care, or check out our Motorhome Seat Covers for interior protection too. 

 

Frequently Asked Questions

Aim to wash it every 4–6 weeks during regular use, or before and after storage periods.
Yes, but keep the nozzle at least 1 metre away and avoid direct pressure on seals, vents, and windows.
Use a specialist black-streak remover on cool panels, then rinse and wax to prevent recurrence.
Absolutely. Wax provides UV and rain protection, enhances shine, and reduces long-term cleaning effort.
No — all UK Custom Covers are made from soft, non-abrasive, breathable materials that prevent scratches.