7 Tested and Best RV Cleaner for Fiberglass 

Why do You Need to Clean an RVs Fiberglass?

Wax for fiberglass is a substance that protects your RV from the effects of water, filth, and the sun. With the best RV cleaner for fiberglass, you can protect the exterior of the fiberglass. If your RV has fiberglass or gel-coated areas, you’ll need to use an RV wax with a formulation for RVs. 

Failure to use the correct wax can lead to oxidation, making fiberglass appear chalky or dull. Waxing your RV will provide it with an extra layer of protection from the elements and ordinary wear and tear.

Toolbox with Colorful Wax Tubes

Our Top-Rated Pick

Our top-rated brand for this review is Meguiar’s. This solution provides fiberglass and gel coat surfaces with long-lasting polymer protection and a stunning deep shine. It is the best for marine use.

How to Wax a Fiberglass RV

The method for shining a fiberglass RV varies according to brands. Some companies sell RV care solutions for multiple purposes. All you have to do is grab a cloth or buffer, according to the directions, and apply it to your vehicle.

Some brands, on the other hand, provide kits. You can receive a cleaner, polisher, and wax in a set for the price of one. The majority of these combo sets offer instructions on how to wax a fiberglass RV with the included products.

If you’re buying different items for different activities, the basic rule is to use a sponge to scrub the fiberglass surface with water and a light detergent. This aids in the removal of build-ups. After you rinse it, pat it dry with a towel.

Apply the cleanser after it dries, focusing on areas with rust. Depending on the product’s formulation and oxidation degree, you may need to repeat the procedure until you’re satisfied.

After you prepare the surface, it’s time to wax it. Wax, like certain cleaners, may require you to apply additional layers before you like the results. Depending on the formulation, this phase may or may not need a cloth or a buffer.

Why you Should Buy a Fiberglass RV Wax

Make your RV sparkle. Nothing beats the sight of a gleaming RV speeding down the highway. A decent wax, along with the correct wash and polish, will give your RV a high-quality finish that will attract the attention of any smaller vehicle passing by.

Fiberglass is a long-lasting, sturdy material, but it can experience early wear and tear as it ages due to water and UV rays. A wax layer with water and UV protection will assist the fiberglass and paint above it last longer.

Make cleaning quick and straightforward. Wax layers repel dirt and filth that love to adhere to bare paintwork or clear coatings. If you intend on traveling somewhere where your RV might get dusty and muddy, wax it before you go to make cleanup easy.

Why Trust Us?

We are kin on RV camping and adventure, so we came up with this blog to make your RV adventure enjoyable. 

The goal is to get the best RV maintaining products and value for your money. 

Our Top Tips on Using RV Fiberglass Cleaners

How to work fiberglass for RV cleaning. Fiberglass is one of the most commonly utilized materials in RV construction. You can find it all over the exterior of your RV. Your fiberglass can easily stain, scuff, and wear.

It’s tempting to attempt to clean your fiberglass as soon as possible since there’s so much “cleaning real estate” outside an RV. If you’re not careful, you can do more harm than good. We’ve compiled a list of how to clean a fiberglass camper RV.

Purchase the Correct Products

The quickest method to assure that you’re cleaning fiberglass incorrectly is to pay no attention to the products you’re using. When it comes to fiberglass, a general cleaner will usually suffice. However, we recommend using a specialist cleaner to ensure that you remove scuff marks, stains, and other concerns that are prevalent with fiberglass. 

The idea is to look for a formula that isn’t scratchy. A powder-based Fiberglass cleaner can clean fiberglass quickly, but if it doesn’t include this non-scratching ingredient, it could cause more harm. 

It’s true: when people are only attempting to make their fiberglass seem significant, they cause damage to it. If you’re going to do the same, keep in mind the wrong ways to do it and stay away from them.

Don’t Do Anything Unnecessary To Fiberglass 

Avoid using a power buffer on your fiberglass. This might cause scratching and undue force on your fiberglass, which is difficult to remove. However, that isn’t the only weird thing RV owners do to their motorhomes.

  • Use of scratch-formula cleansers: Read all fiberglass cleaner labels, as mentioned earlier. 
  • Using cleaning tools that are too harsh: One example is the power buffer; you also don’t want to use steel wool. When it comes to fiberglass, combining a gentle touch with the proper chemical will ensure that you obtain the same cleaning power without effort.
  • You’re moving too quickly: True, when it comes to RVs, there are a lot of fiberglasses to clean, and it’s tempting to rush through it all to make sure everything is clean. On the other hand, going too fast can lead to other errors or poor cleaning.
  • In the end, you’ll want to treat your fiberglass like the one-of-a-kind material that it is. Understand how it works, what it necessitates, and how you can best deal with it. Also, if you need to clean anything, make sure you purchase the necessary RV cleaners straight away.

Understand The Different Types of Fiberglass RV Wax

Aside from considering the factors, it’s also essential to think about the best wax for motorhomes fiberglass. Although there are many different RV wax options on the market, you can find them in three categories:

  1. RV wax in liquid form: Liquid wax is perhaps the most common and popular type of wax for fiberglass RVs. Liquid wax is typically in bottle packages and is best for large surfaces, such as Class A RVs.
  2. RV wax (paste): Compared to its liquid counterpart, paste wax takes more time and effort to apply. Although paste waxes are less common than liquid waxes, they may be ideal for minor repairs and maintenance on fiberglass surfaces.
  3. Spray-on wax for RVs: The spray-on variant is the simplest to apply of the three RV wax categories, and it’s most common in small to medium bottles. As a result, this option may not be suitable for large campers. However, it can still be a viable option for cleaning and maintaining small to medium RVs.

Know The Most Common RV Wax Benefits for Fiberglass

  • It can be used on various materials, including fiberglass, plastic, and painted metal.
  • Environmentally friendly and risk-free.
  • Restores fiberglass surfaces to their original color and luster.
  • Different cost-effective choices may be available for a wide range of surface areas.
  • Reasonable prices to accommodate a variety of budget constraints.

RV Wax’s Common Drawbacks for Fiberglass

  • Options that are specific but dedicated may only work on fiberglass surfaces and need many treatments to achieve what you desire.
  • Residues may form following the application.
  • It can be more challenging to implement than others.
  • It may be more expensive.

The Best RV Cleaners for Fiberglass at a Glance

  1. Meguiar’s M6332 Flagship Premium Marine Wax: Best for premium marine wax.
  2. Gel-Gloss RV Wash and Wax: Best for RV wash and wax.
  3. Meguiar’s M4965 Marine/RV Fiberglass Restoration System: Best for fiberglass restoration system.
  4. CAR GUYS Hybrid Wax – Advanced Car Wax: Longlasting and easy to use.
  5. Wet or Waterless Car Wash Wax Kit: Best for a waterless wash.
  6. Collinite No. 845 Insulator Wax: Best for long-lasting covering.
  7. 3M Marine Restorer & Wax (09006): Best marine restorer.

Your RV Cleaner Buyers Guide

Before you buy the best RV cleaning products, consider the following points. They will help you decide on the best RV cleaner for fiberglass and other necessary tools.


First and foremost, you must determine the RV wash’s compatibility with the vehicle’s surface. Because not all of them are suitable for all types of materials, it’s critical to choose wisely to avoid damage.

Some RV washers feature formulae that you may use on plastic, glass, metals, and other surfaces. These are fantastic for cleaning the entire RV thoroughly, and they’re a good investment. As a result, think about whether you’d instead acquire an all-purpose cleaner or various items for washing and maintaining your vehicle.


Another thing to think about is the security that an RV wash provides. Those who frequently travel throughout the year may want to invest in a product that offers excellent weather protection. If you’re traveling in the summer, you’ll want to invest in a UV-resistant wash.

On the other hand, winter necessitates using a conditioner to protect the surface from low temperatures, water, snow, ice, and other elements. Some products provide complete weather protection, although they are usually more expensive.


The popularity of RV washes stems from the fact that they clean the surface and maintain it clean for an extended period. They’re known for creating a protective layer on the car that repels dirt, dust, and debris. Choose the best RV cleaner for fiberglass concerning your needs.

The durability of the protective film, on the other hand, varies from one product to the next. Some will last longer than others, so it’s critical to examine the durability of each product before purchasing.


Avoid chemicals and abrasives that could harm the surface in an RV wash. Toxic formulations can cause paint to scrape or dent, corrosion, and premature aging. Look for non-toxic products that pass scratching and haze tests.

Choose biodegradable and environmentally friendly washes because they are better for the environment. Furthermore, test the product on a tiny area after purchasing it before applying it to the entire surface.

Other Things to Think About

  • Application of the RV fiberglass restorer and wax. It’s essential to consider how easy or hard it is to use. Some RV washes require quite a bit of elbow grease to spread and wipe clean. Consider whether you want a spray-on, liquid, or paste wash before you buy. You can also use waterless goods if you don’t have access to a water supply.
  • Accessory items and tools to use together with the best RV cleaner. Accessories such as pads, brushes, and fiberglass cloths are essential for effective and comprehensive surface cleaning. All of them are great for RVs and make cleaning surfaces a breeze. If you have a large RV and travel regularly, a powerful instrument such as a pressure washer can be helpful.
  • Pricing of the products is equally important. Budget fiberglass waxes are often modest but effective in performance. It’s reasonable to anticipate a decent sheen and amount of protection here, but if you have a large RV to wax, be prepared to buy a few bottles.
  • Midrange fiberglass waxes tend to come in larger bottles, allowing you to cover a full RV for at least one go-around. The final effects are comparable to those of low-cost RV waxes. Waxes in this price range are in large quantities or come with combo cleaning kits. If you want to get the value for your money, this is the range to look at; spend a bit more to obtain additional wax or other cleaning options.
waxing process

Reviewing the Best RV Cleaners for Fibreglass

Meguiar’s M6332 Flagship: Best for Premium Marine Wax

Brand: Meguiar’s

Model: ‎ M6332

Weight:‎ 2 pounds (0.9 kilograms)

Dimensions: ‎3.7 x 2.7 x 8.9 inches (9.3 x 6.8 x 22.6 centimeters)

About This Item

  • Easy to use: This solution provides fiberglass and gel coat surfaces with long-lasting polymer protection and a stunning deep shine.
  • The most effective boat protection: This product assists in UV protection and wears resistance.
  • Variety of applications: you can remove light oxidation, fine scratches, and swirls while protecting the surface.
  • Outstanding results: You enhance color and shine, bringing out the full richness of the surface.
  • Application with hand pads or a polisher: Has a formulation for use with a dual-action variable speed polisher or by hand.

Gel-Gloss RV Wash and Wax: Best For RV Wash and Wax

Brand: Gel-Gloss TR Industries

Weight: 4 pounds (1.8 kilograms)

About This Item

  • It cleans and waxes in one step
  • Carnauba wax provides excellent protection and is biodegradable.
  • It doesn’t take away any wax that was there earlier.
  • There are no streaking or water stains as a result of use.
  • Carnauba is one of the ingredients, and it is biodegradable.
  • It is simple to use and safe.
  • There will be no staining or water spots.

Meguiar’s M4965 Marine/RV: Best For Fiberglass Restoration System

Brand: ‎Meguiar’s

Weight: ‎2.2 pounds (0.9 kilograms)

Dimensions: 12 x 12 x 9.25 inches (30.4 x 30.4 x 23.4 centimeters)

About This Item

  • It restores your boat: The fiberglass restoration system aids in the restoration of fiberglass and gel coats.
  • Removes all the stains on your boat: You will be able to remove your boat’s oxidation spots and scratches with oxidation remover.
  • It makes your boat glamorous: In and out of the water, high gloss polish will make your boat shine brightly.
  • Long-lasting wax: You will protect your yacht for a long time with Pure Wax.

CAR GUYS Hybrid Wax – Advanced Car Wax: Longlasting and Easy to Use

Brand: ‎CAR GUYS

Weight:‎ 1.5 pounds (0.68 kilograms)

Dimensions: 10.67 x 7.52 x 3.03 inches (27.1 x 19.1 x 7.69 centimeters)

About This Item

  • Are you tired of using things that look wonderful but don’t last? That is not something you will encounter with this brand. This magic bottle creates a deep shine, a frictionless surface, and long-lasting protection.
  • It leaves no streaks and is safe to use on any surface: This product is not only quick and simple to use, but it is also entirely safe for use on any surface and any vehicle. Whether you have a car, truck, motorbike, RV, or boat, you’ll never have to worry about white residue or streaks by traditional wax. Use it on paint, plastic, glass, and anything else that needs a little extra shine and UV protection.
  • Stunning show car glow: The majority of items on the market today will make your vehicle seem great. Hybrid Wax from CAR GUYS raises the shine and reflections to a new level. This long-lasting product works at the micro molecular level to deliver immediate effects, leaving you with a head-turning sparkle that will make all your neighbors envious.
  • Why should you pick CAR GUYS? – Quality is essential, and the manufacturing of the products is by the most up-to-date scientific advances and the most advanced technology accessible. This enables us to produce high-quality goods that perform admirably continually. 

Wet or Waterless Car Wash Wax Kit: Best For Waterless Wash

Amazon’s Choice Award For “Waterless Wash”

Brand: ‎ Aero Cosmetics

Weight: 11 pounds (4.99 kilograms) 

Dimensions: ‎9 x 5 x 11 inches (22.8 x 12.7 x 27.9 centimeters)

About This Item

  • The best waterless car wash in the market. Cleans and protects all vehicle surfaces inside and out while leaving a non-stick UV protective coating. All other waxes, sealants, and ceramic coatings are also suitable. Spray and wipe dry. Parking lots, garages, work, schools, apartments, RV parks, and more are great places to wash and wax. Waterless Wash up to 28 cars with 144 ounces (4082 grams), or wax as you dry 36 vehicles with 144 ounces (4082 grams). Also, it works wonders on any interior surface. Leather, vinyl, plastic, and glass are just a few of the materials available.
  • Wax for your car, boat, or RV that performs like aircraft. For over 33 years, Air Force One, Marine One, NASA, the military, airlines, corporate, and individual aircraft owners rely on it. This is a high-quality, user-friendly product.
  • Water-based with no alcohol or ammonia. This plant-based, eco-friendly product is biodegradable and safe for use on both inside and outside surfaces. Cleaning standards for Boeing Aircraft, Airbus Industries, and McDonnell Douglass. Also, unlike some other automotive products, it is not irritating to the eyes or skin.
  • Please keep in mind that this is a wash and wax product. Wax will help to protect and improve your current shine. If your finish is dull, oxidized, or scratched, you’ll need a Polish to fix the problem. 

Collinite No. 845 Insulator Wax: Best For Long Lasting Covering

Brand: ‎ Collinite

Weight: 1.5 pounds (0.68 kilograms)

Dimensions: ‎2.52 x 2.52 x 7.99 inches (6.4 x 6.4 x 20.29 centimeters)

About This Item

  • Collinite’s most iconic product to date is the no. 845 paste, which is a user-friendly variant of the no. 476S paste. “IW,” known for its versatility, durability, and DIY ease of use, is perfect for small and big surface area applications where long-term protection and speedy completion are the targets. Still, harsh buffing and frequent reapplication are not feasible. 
  • It leaves a carnauba sheen and a durable covering protecting the finish from UV, rain, snow, salt, dust, filth, grime, pests, stains, etc. 

3M Marine Restorer & Wax (09006): Best Marine Restorer and Wax

Brand: 3M Marine

Dimensions:‎ 12 x 6 x 6 inches (30.4 x 15.2 x 15.2 centimeters)

Weight: ‎2.7 pounds (1.22 kilograms)

About This Item

  • You can polish and protect fiberglass and gel coat with 3M Marine Restorer and Wax. There is a chemical combination with a specific blend of waxes in this simple liquid solution. You can restore shine and add a layer of protection to your boat in just one application, keeping it gleaming in the sun.
  • 3M Marine Restorer and Wax restores and maintains the lustrous sheen that makes a boat appear excellent out on the water. A proprietary liquid formulation mixes a rubbing compound with a particular blend of waxes to restore shine while protecting one application. Our ‘two-in-one’ product with rubbing compound and waxes is popular among boat detailing specialists because of its ease of use and time-saving.
  • Everything from oxidation to rust deposits is taken care of. You can remove medium oxidation, filmy residue from the lake, river, or ocean water, rust deposits, exhaust stains, and dock skid marks using 3M Marine Restorer and Wax. It removes rust and other coatings that hide your boat’s natural color and gloss. After using it, you will notice a more glossy luster and a deeper, more brilliant color.
  • A Protective wax is part of the package to keep your boat looking great. When you expose your boat to sunshine and weather, the waxes give protection and help keep the beauty of your boat. It will keep your yacht looking great while tied at the marina and out on the water. You can use 3M Marine Restorer and Wax on other vehicles with fiberglass and painted surfaces, such as RVs, personal watercraft, and boats.

FAQs on RV Fiberglass Cleaners

How is RV Wax Different From Other Waxes?

RV wax is generally less abrasive than regular waxes. This is because RVs require a wax that is less likely to harm delicate surfaces like fiberglass.

Which Tools Are Needed To Clean RV Fiberglass?

To make the washing procedure go faster, get specific tools. It’s not easy to build these land yachts. Working smarter, not harder, is the way to go. 

  1. Wash the side of the RV with a broad green brush mounted on a pole. This brush head’s incredibly soft synthetic fibers will not scratch the delicate finishes on an RV, such as clear coat, gel coat, and high polished aluminum. It also features a rubber bumper around the head that protects the finish of your RV if you unintentionally bump it.
  2. You also need a water blade that you can mount on a pole. Use a yellow squeeze on the end of the pole to wipe the water off of the RV. This equipment allows you to squeeze off most of the water from your RV, saving you time and lowering the risk of water spots. The less time you spend with a towel soaking up water, the better.
  3. A good microfiber chenille wheel cleaning mitt. Wiping the side of the vehicle with a blue microfiber chenille wash mitt. These wash mitts are high-quality chenille microfiber that won’t scratch your wheels’ high-polish gloss. These towels will significantly cut drying time when using towels after the water blade. They’re incredibly absorbent and scratch-resistant, so you can dry an entire side of your RV without slowing down.
  4. Glass towels in green microfiber. These are perfect for cleaning around door jambs and storage compartment jambs and wiping down windows, mirrors, chrome, and polished accessories (ladders, handles, mirror housings, etc.).
  5. Gel-Gloss RV Wash and Wax is a good auto wash shampoo. Gel-Gloss is affordable and easy to use. It’s incredibly slick, foams thickly, and is relatively inexpensive. To top it off, it’s free of petroleum distillates, making it suitable for RVs with rubber (EPDM/TPO) roofs. It cleans thoroughly and leaves a tiny layer of carnauba wax behind. With these materials, you should be able to decrease your cleaning time in half. You’ll be in much better shape if you can utilize a pressure washer in addition to these items. 

How Do I Remove Oxidation From My RV Fiberglass?

  • To eliminate oxidation from RV fiberglass, mild abrasive polishes are an excellent choice. You can remove light scratches, surface stains, and worn paint using these. Keep in mind that polishes do not provide a protective finish, and you must follow it up with wax. On the other hand, Waxes and polishes are only effective on fiberglass RV exteriors with light to moderate oxidation.
  • Hand buffing removes oxidation from RV fiberglass. To recover oxidized RV fiberglass, you need a little elbow grease and some polishing product. Use a non-scratch kitchen scrubby sponge to apply the polishing product. Work the polish into the surface with your hands until there is no longer resistance. Allow time for the polish to dry and haze. Finally, remove the haze to expose the gleaming surface beneath using a clean, dry cloth. Finish it up with a good marine or RV wax. Apply the wax with a clean, dry cloth, let it dry to a haze, and then polish it to a lustrous sheen.
  • Using a power buffer to remove RV oxidation. Using an electric power buffer would save you time, but it will also make you feel less stressed and put less strain on your body. Remove the oxidation from significant parts of your RV with an electric power buffer and polish. Similarly, remove oxidation from your rig’s nooks and crannies using a kitchen scrubby sponge and polish. You can use the power buffer to polish your RV gel finish and eliminate oxidation. You can, however, use it to apply wax and polish your RV to a bright gloss. Use a wax that is for protecting an RV’s fiberglass surface. You can also use marine wax, which is for boats.
  • Extreme Fiberglass Oxidation Restoring: As an RV’s fiberglass ages, it can get damaged in ways that even professional products cant repair. You can use wet sanding to repair the damage in this scenario. This is time-consuming and necessitates attention to the smallest of details. Soak sandpaper in a polish solution for 24 hours. Place the sandpaper on a foam block after that. Sand the fiberglass surface until it is silky smooth. After sanding, apply a high-quality, super-duty finish. For significant impact, you may require to repeat applications.
  • During intense oxidation, strands of fibers may appear on the surface: If this is the case with your RV, try pulling the fibers away from the surface with a pair of tweezers. If this happens, the fiberglass in your RV is eroding. If this is the case, you have two options: a professional RV paint job or a DIY RV paint job. The second option is to re-gel coat the fiberglass surface. Painting and gel coating takes roughly the same time and money to complete. On the other hand, Gel-coat will stay longer and produce superior overall effects.
  • Imprinting occurs when you can’t remove the fibers away from the surface with tweezers. Correct this irregularity by use of wet and dry sandpaper, as well as a padded sanding block. After you straighten the anomaly, apply paint or a new gel coat layer.
manual waxing

The Final Word

Remember that each vehicle owner’s best RV cleaner for fiberglass is different. To put it another way, one person’s “best” wax may not be the greatest for another.

Some fiberglass wax choices give better results than others. When shopping for RV wax, look for products that will provide your camper car with the most convenience, durability, and protection. Be sure the price is appropriate for your existing budget. One example is our top premium marine wax, Meguiar’s M6332.

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