Achieving a Head-Turning Finish with Proper Wash and Wax Technique for Your RV

TL;DR: A proper washing and waxing routine for your RV does more than improve appearance—it protects paint, prevents oxidation, and reduces long-term exterior damage. This guide walks through why rain isn’t enough to keep your RV clean, why hard water and sun exposure matter, and how washing, polishing, and waxing work together to keep your RV’s finish healthy and glossy.

If you care about your RV and want to keep it in tip-top shape for many years, then learning how to wash and wax it properly is essential.

The truth is that cleaning your motorhome does more than just impress others at the campground; it protects the exterior and extends its lifespan. Washing also paves the way for waxing, which keeps your RV paint looking shiny and keeps it healthy so rust doesn’t develop over time. But there’s a knack to washing and waxing.

Luckily, we’re here to give you the ins and outs of keeping your RV clean and protected.

Why Washing a Motorhome Matters

Why should you bother washing your camper van or RV when the rain will do it for you?

For one thing, rain can actually be “hard”, or full of minerals, which can cause water spots that etch into the paint. Over time, compounded by the sun, these can cause irreparable paint damage. And any degradation of your RV’s paint risks exposing the metal underneath, which leads to the formation of rust.

Hard water spots aside, washing your RV helps remove dirt, road grime, bug splatter, road salt, and other environmental contaminants that can cause damage to the exterior of your motorhome. And, because you can’t wax or seal the paint of an RV when it’s dirty, washing preps the surface for further protection, too.

Have we mentioned that keeping your RV in good shape helps protect its resale value?

The Best Way to Wash an RV

How you wash your RV matters.

1. Start by rinsing your RV thoroughly, working from the top down.
2. Use an RV safe wash solution like Image Wash Products Wash & Wax or Platinum Wash – never dish soap.
3. Clean in sections using a soft car wash brush or mitt. RV owners often find it helpful to purchase brushes on poles – but do NOT use a broom, which are far too stiff. Don’t wait for the whole RV to be soaped up before rinsing, especially when sunny out. And, if possible, avoid washing in direct sunlight at all.
4. Rinse thoroughly.
5. Dry with a soft drying cloth or paint-safe drying squeegee to prevent water spots.

How to Polish a Fiberglass Motorhome & Wax It

In some cases, when oxidation or paint swirling cause your RV’s paint to be dull or damage-prone, polishing (also sometimes called “compounding”) might be necessary to restore luster. To polish your RV,

1. Use a fiberglass-safe polish or cleaner wax.
2. Park your RV in a fairly shaded area (away from trees where bird droppings can occur if possible).
3. Apply polish by hand or with a dual-action polisher, working section-by-section (aim for about 12x12 squares) in 50% overlapping passes, applying light to moderate pressure and moving slowly. When using a DA polisher, aim to make 6-8 section passes per each “square”. Yes this takes time, and it’s why so many people pay top dollar for professional detailing! Once you’ve achieved the level of finish you desire, or once the polish dries to a haze, buff out.
4. Once polished, or, if shiny enough after washing to move onto waxing, wax by using a thin layer of wax and letting it dry to a haze. Then buff out completely.

How Often Should I Wax My RV?

It’s recommended to wax your RV at least once or twice a year…more often if it’s often exposed to harsh weather or hot sun.

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