Washing an Airstream is not the same as washing a regular RV. Airstream trailers are built from bare aluminum, which reacts differently to water, detergents, and brushes. Using the wrong products can cause oxidation, streaks, or permanent surface damage.

This guide explains how to wash an Airstream properly, whether it’s a routine wash or preparation for polishing.

Why Airstream washing requires special care

Airstream aluminum is not painted. It naturally oxidizes when exposed to air and moisture. Improper washing can:

• accelerate oxidation

• leave white streaks and stains

• dull the surface

• contaminate aluminum before polishing

That’s why pressure washers, harsh chemicals, and automatic car washes are risky for Airstreams.

What you’ll need before washing

Use only products that are safe for aluminum.

Recommended supplies:

• pH-neutral RV or aluminum-safe soap

• two buckets (wash + rinse)

• soft microfiber wash mitt

• soft-bristle brush (only for lower panels)

• microfiber drying towels

• ladder or platform for roof access

Avoid abrasive sponges, stiff brushes, and household degreasers.

Step 1. Rinse the trailer thoroughly

Start by rinsing the entire Airstream with clean water.

Important tips:

• rinse from top to bottom

• remove loose dust and sand first

• do not use high-pressure jets near seams or windows

This prevents scratching aluminum during hand washing.

Step 2. Hand wash in sections

Wash the Airstream one panel at a time.

Best practice:

• mix soap according to instructions

• use light pressure only

• work from top to bottom

• rinse each section before soap dries

Letting soap dry on aluminum can cause spotting.

Step 3. Pay attention to seams and rivets

Airstream rivets and seams collect grime.

How to clean them safely:

• use a soft brush or detailing brush

• avoid circular scrubbing

• rinse thoroughly

Never use metal brushes or abrasive pads on rivets.

Step 4. Wash the roof carefully

The roof accumulates the most dirt and oxidation.

Roof washing tips:

• ensure stable footing

• use only soft brushes

• avoid stepping near roof edges

• rinse frequently

Dirty roof runoff is a major cause of sidewall streaks.

Step 5. Final rinse and drying

After washing:

• rinse the entire trailer thoroughly

• dry with microfiber towels

• inspect for streaks or missed areas

Air drying alone often leaves water spots on aluminum.

What NOT to do when washing an Airstream

Common mistakes:

• using acid or alkaline cleaners

• automatic car washes

• abrasive pads or brushes

• pressure washing seams

• washing in direct sun

These mistakes are responsible for most aluminum damage.

Washing before polishing – an important step

If you plan to polish your Airstream, washing is mandatory beforehand.

Proper washing:

• removes surface contaminants

• prevents grinding dirt into aluminum

• improves polishing results

Skipping this step can permanently scratch the aluminum.

Professional Airstream washing by Custom-way

If you want a safe, thorough wash without risking damage, Custom-way provides professional Airstream washing and preparation services.

Custom-way focuses on:

• aluminum-safe products

• hand washing only

• careful seam and rivet cleaning

• proper prep for polishing or coating

This ensures your Airstream stays clean without harming the aluminum.

Knowing how to wash an Airstream correctly protects both its appearance and long-term value. Gentle products, hand washing, and careful drying are the keys to keeping aluminum clean and ready for polishing. Treated properly, an Airstream can look great for decades.