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Whether you are a professional detailer looking to add RVs to your service menu, or just an RV owner needing some advice, there are a few things to keep in mind when washing an RV vs a car or truck. From the equipment to wash methods, to the actual surface of the RV, there are a few tips and tricks to know about that are slightly different than a car or truck.

In this blog, I’ll break down 9 of the most popular RV detailing tips to be aware of.

Tip 1: Use a pressure washer – but carefully

pressure washer for washing rv

Since you’re dealing with a rather tall vehicle, having the option of using a pressure washer can make it faster to both apply soap with a foam cannon, but you need to be careful not to apply very much pressure at all. That being said, it’s not essential to use one unless you need something to knock loose dirt off more effectively or are applying foam with a foam cannon.

For most RV owners, using a garden hose will be fine, but applying more gallons per minute (GPM) with a pressure washer will just allow you to work a little faster.

For detailers

If you are a detailer, it’s really a must have for washing larger vehicles like RVs, and you really can’t go wrong with a good gas powered pressure washer with wheels like the Simpson MegaShot 3000-PSI unit. If you don’t already have a skid unit, check out my post Building a Pressure Washer Skid Unit for Detailing.

It’s better to go bigger in you are going to be washing RVs often (like a bigger water tank) and even add other tanks for RV cleaners you may want to pump from later on.

These are helpful for cleaning very dirty wheels, but just be sure turn these down to a safe setting and avoid cracks or vents where water can enter.

For RV owners

As an RV owner, you can probably get by with a simple electric pressure washer that produces around 2,000 PSI at max. You’ll find gas pressure washers generally do a better job at using more water and cleaning slightly better (due to more pressure), but these 5 electric pressure washers I recommend perform really well for the price.

As long as you don’t need to blast mold or mildew (and keep your RV pretty clean) an electric pressure washer can be a great choice.

As a word of caution, you want to use a wide-angle sprayer tip and avoid decals and trim pieces. Custom vinyl lettering or accents are expensive, so I would not recommend using a pressure washer if you are washing an RV with a lot of vinyl.

Tip 2: Understand how to clean an RV roof

washing roof of rv

Unlike cars, RV roofs are typically made out of some type of rubber like EPDM (Ethylene Propylene-Diene Monomoer). These are mostly white and are usually the dirtiest part of an RV, which is why they require special attention. You want to be extremely careful when cleaning your roof standing up and even consider handwashing using kneepads if you prefer.

Use the right product for cleaning plastic roofs

Many people will use regular dish soap or a product like Purple Power, which isn’t the best product for plastics. Both contain degreasers, which can really dry out rubber and plastic over time causing cracking. For cleaning an RV roof, you probably just want to pick up a jug of RV rubber roof cleaner that is specifically formulated to both clean and protect your roof from UV rays.

Many of these RV roof cleaners are two-step in nature like the Pro-Tec RV roof products, and provide on product for cleaning and another for UV protection (which can help prevent fading and cracking).

In addition to most roof cleaners, using a standard wash and wax soap can add some additional protection. Waxes and sealants are great for preventing cracking as protectants, just make sure you use what your RV manufacturer recommends based on the material.

Prep for roof cleaning

If you’re only used to washing cars, just know that washing an RV roof can be a different experience you need to be prepared for. Here are a few tips to keep in mind:

  • Be sure to wear comfortable shoes that can grip when wet.
  • Use zip-ties to secure your water hose to something – a hose can be difficult to manage when you’re 8 feet off the ground.
  • Close off vents to avoid water entering the cabin
  • Do not stand on the roof
  • Be careful around antennas and any seals to prevent damage or leaking
  • Work front to back, and avoid putting weight on the front cab (which may not be able to support your weight)

Tip 3: Take your time

As a detailer or owner, you need to know that RVs can take about 6-8 hours to wash and detail thoroughly if you are one person. Be sure to take breaks, have fluids on hand if it is hot, and try to work in the shade if you can.

Because RV washing can take a while to clean, you can also expect to pay more (or charge more) for these services as opposed to a car wash.

$150-$250 is not unreasonable for a complete exterior wash and detail that includes washing tires, polishing chrome, and everything else. If you plan to clean the interior, that’s usually another $100-$200 depending on the level of service your customer is requesting.

For Detailers

As good practice, set expectations for what the client can expect based on what they are willing to pay you. RVs are large, and it can be very easy to miss a 1-inch spot under a ladder (for example). Be sure the client understands the nature of washing RVs and how getting them clean is much different than a car.

Tip 4: Use products recommended for each RV surface

RVs these days are made from a variety of materials from aluminum (rare) to fiberglass, to aluminum. Below are a few RV specific products I found on Amazon you can use. These have pretty good reviews and formulated for washing gel coats and RV materials unlike normal car wash soaps.

Keep in mind you may need to ask your dealer or manufacturer what chemicals are safe to use if removing mold or other hard to remove substances. White vinegar (for example) is a pretty safe and effective method to remove mold from RV roofs.

Gel-Gloss RV – Click to View on Amazon

rv gel coat wash

This is one of the most popular concentrates for cleaning RVs that is an all-in-one wash and wax. This is biogedradable, but does not remove previously applied wax. This is great for a bunch of surface types (like aluminum) and good to use as your regular wash product.

Aluminum Wash by Camco – Click to View on Amazon

aluminum wash for RV

If you have a lot of shiny aluminum or chrome, an aluminum wash may be a better alternative that actually helps remove oxidation from metal parts of your RV while. This product by Camco is a good choice, especially if you have an all aluminum RV.

Meguiar’s Cleaner WaxClick to View on Amazon

meguiars cleaner wax

To help remove stubborn black streak marks or areas you may have missed from washing, having a wax with some cleaning properties like this Meguiar’s product is great to have on-hand after you finishing washing just to touch things up. This product is designed for RVs and can be applied with a polishing pad.

Tip 5: Don’t worry about drying your RV

Since drying RVs are essentially impossible to do on a hot day due to evaporation, it’s usually not worth your time as long as you use the right products. Especially if you have a metal Class-A RV in a dark color, water spots can be pretty difficult to prevent.

Many owners find that using wash and wax products can help reduce the appearance of these spots, but another solution is to treat your water source itself.

Consider a spotless water system for some RVs

By far the most common portable water purifier for auto enthusiasts is the CR Spotless Car Wash System you can find here on Amazon. It basically removes those hard minerals in your water using filters that can be replaced after several washes.

Tip 6: Use a foam cannon to apply suds

best foam cannon

Applying suds using a foam cannon or gun can really help save time if you prefer not to dip a brush in to a bucket of suds. You can use a foam gun with your standard garden hose, or a cannon with a pressure washer. Click here to learn all about foam cannons/guns and my recommendations.

Although dirt is best removed my hand, an RV can usually get pretty clean if the product you are using can create thick foam. Even if you plan to go back over with a long brush, it can speed up the process of applying soap to such a large surface.

Tip 7: Purchase a long wash brush for traditional washing

A wash brush with an extendable pole is really ideal if you plan to charge more per vehicle and do not need the speed and convenience of a foam sprayer. While I generally don’t recommend washing cars with any kind of brush, RVs are a bit of an exception as long as you use a soft fabric brush, avoid bristles, and keep it clean.

Tip 8: Use Lamb’s Wool to Avoid Scratching

Many manufacturers of RVs recommend lamb’s wool for washing, which is generally a great choice for cars as well. RVs get pretty dirty, and a stiff bristled brush you may have washed your car with can cause scratching and generally not recommended in the RV community.

Opt for either a soft lamb’s wool mitt for those hard to reach areas, or a soft brush head made of wool or microfiber material to attach to an extendable pole.

Tip 9: Consider a truck wash

If you don’t use your RV frequently (and don’t want to worry about equipment) another tip is to consider a truck wash. If you haven’t heard of a truck wash before, these are pretty similar to full service car washes but designed with larger bays to fit RVs and semi trucks. You can find truck washes just about anywhere, and usually start at around $50.

It’s also not a bad business to start if you are a detailer working near a tourist hub.

Blue Beacon is a one of the most popular chains with locations all across the United States that I’ve heard good things about. Avoid truck washes that use mechanical brushes, and always make sure that these washes have the qualifications to wash your RV safely.

While these services typically won’t provide the level of clean you can achieve on your own, they are much more practical if you are traveling.

Conclusion

Washing an RV can be a time consuming task, but hopefully with these tips you have a good starting point. This is actually a pretty good business as a detailer if you live in a touristy area with a lot of recreational vehicles, and a service that is worth checking out as an owner.

Let me know if you any other tips that you have found helpful when cleaning an RV!