Best Fiberglass RV Waxes: Add Some Shine and Protection to a Fiberglass RV

Protect your fiberglass RV with these top choices

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Since most recreational vehicles have a fiberglass exterior, detailing these large behemoths can be somewhat different than your average car. While many washes, polishes, and waxes can be used on RVs and other vehicles, it pays to take some extra care with your product selection to avoid the potential of staining or damaging the fiberglass surface. That's why we've taken the time to compile this guide for RV owners on some of the best RV waxes that are safe for use on fiberglass exteriors. 

  • Best Overall
    Meguiar's M6332 Premium Wax
    Summary
    Summary
    The best product you can use on RVs and boats to get a great shine and protective finish onto the surface.
    Pros
    Pros
    Comes in a large 32-fluid-ounce bottle. Great water-repellent capabilities gave the boat-specific design. Good shine.
    Cons
    Cons
    Wax is sensitive to environmental factors. The optimal temperature range is only around 10 degrees before it dries too slowly or quickly.
  • Best Value
    TR Industries Gel-Gloss Wash and Wax
    Summary
    Summary
    A convenience wash-and-wax cleaner wax that makes it easy to get a clean and shiny surface from your RV again.
    Pros
    Pros
    The wash-and-wax combo is extremely easy to apply. Suds onto the RV surface. Since it’s not a rinse-free product, it can be rinsed with water right from the hose. 
    Cons
    Cons
    Doesn't react well to sunlight. Spots may form in the finish if left to air dry alone.
  • Honorable Mention
    Meguiar's Marine/RV Fiberglass Restoration System
    Summary
    Summary
    The fiberglass restoration kit to choose when you need to do some detailing magic on your RV or boat.
    Pros
    Pros
    Comes with three separate cleaning solutions. The Pure Wax does a good job of leaving a noticeable shine with some basic water-repellent capabilities.
    Cons
    Cons
    The entire three-step restoration process can be difficult and lengthy to achieve the best results. Better done by hand, although power applicators can be used if you have the skill.

Why Buy a Fiberglass RV Wax

  • Shine up your RV. There is nothing quite like a shiny RV rolling down the highway. A good wax, combined with the right wash and polish, can give your RV a high-quality finish that will surely catch the eye of any smaller vehicle roaming down the road along with you.
  • Protect the fiberglass exterior. Fiberglass is generally a long-lasting, durable material, but certain things like water and UV rays can cause some premature wear and tear as it ages. A wax layer with water and UV protection will help you prolong the life of the fiberglass and the paint above it.
  • Make cleaning quick and simple. Wax layers tend to help repel dirt and grime that likes to cling onto bare paintwork or clear coats. If you plan on driving anywhere that may leave your RV a dusty, dirty mess, wax it before you travel to make cleanup afterward a breeze.

Types of Fiberglass RV Waxes

Liquid

Liquid waxes make up the bulk of most RV fiberglass waxes. Coming in large bottles, liquid wax is fairly easy to apply in controlled amounts over large surface areas. They also tend to respond well to both hand and power application, making this type extremely versatile in matching your personal preferences on waxing your RV.

Paste

Paste waxes sit on the opposite end of the waxing spectrum compared to liquid types. Pastes, especially carnauba waxes, are harder and can be more difficult to apply by hand. For RV use, they are less common but remain a good choice if you prefer to avoid liquid and spray-on solutions.

Spray-On

The least common type of wax for RV use, spray-on waxes are generally the most convenient to apply. Since bottle sizes tend to be small, and the spray-on action leads to a lot of oversprays and wasted wax, they aren't the most economical when it comes to waxing an RV. In other words, expect to buy a few extra bottles of spray if you want to use this type of wax. 

Top Brands of Fiberglass RV Waxes

Meguiar's

It should come as no surprise that one of the leading manufacturers of polishes and waxes offers some great fiberglass shiners as well. Meguiar's has a history that spans more than 110 years. In that time, the company has developed numerous cleaning and detailing products that have set many industry standards and expectations. For RV use, the Fiberglass Restoration System is hard to beat for its comprehensive detailing process.

Star Brite

Founded in 1973, Star Brite started with a single product, the Star Brite Auto Polish. Known for its innovative marketing, the company has since expanded its automotive care products line to include a number of polishes and waxes for a variety of vehicles. Specializing in marine and car products, it has several great fiberglass waxes, including the Premium RV Polish/Ultimate Wax.

Fiberglass RV Wax Pricing

  • $20 and under: Budget fiberglass waxes tend to be small but effective in performance. It's reasonable to expect a decent shine and level of protection here, but be prepared to buy a couple of bottles if you have a large RV to wax.
  • $20-$40: Midrange fiberglass waxes tend to come in larger bottles so you have enough to cover an entire RV for at least one go-around. Finished results are on par with budget-friendly RV waxes.
  • $40 and above: Waxes in this range are either large in quantity or come included in combination cleaning kits. Either way, this is the range to check out if you want to maximize the value of your dollar; spend a little extra to get more wax or other cleaning solutions. 

Key Features

Durability

Most waxes offer a lot of shine and protection for a certain amount of time. The best waxes offer shine and protection for a long period of time. The durability of wax often dictates how long it will last. On average, three to six months is a good lifespan, especially if you only drive your RV during certain seasons or months of the year. For the best longevity, look for a wax that can last up to the year so you can reduce the amount of waxing you need to do. Look for non-toxic waxes to avoid any allergies as well. 

Element Protection

Beyond the shine of the finished coat, a wax should ultimately provide a good layer of protection against the elements. Water, dirt, and UV damage are three of the most common things waxes need to guard against. These things can damage fiberglass, fade paint, and generally age the RV more quickly. Check the description of any wax you consider to see if it's formulated to repel water or to act as a UV protectant.

Other Considerations

  • Size: Any wax will be limited by the amount it comes in. Larger wax amounts (up to a gallon bottle for liquid waxes) are better suited for RV use since there is less of a chance of running out midway through waxing your RV. Smaller amounts, however, can be good to keep on hand if you need a little extra or want to touch up some spots more frequently than your main waxing routine. 
  • Abrasiveness: The abrasiveness, or "roughness," of a wax measures how likely a wax is to cause haziness or leave small scratches on a finish. RV waxes tend to be low or non-abrasive to avoid scratching a delicate fiberglass surface but keep an eye on any fine scratches as you apply a wax to avoid major damage. Look for waxes that advertise a non-abrasive formula to be sure.

Best Fiberglass RV Wax Reviews & Recommendations 2019

Best Fiberglass RV Wax Overall: Meguiar's M6332 Premium Wax

Meguiar's M6332 Premium Wax
Amazon

Don't let the picture of a sleek boat fool you, Meguiar's Premium Marine Wax goes on all things fiberglass, including large RVs. In fact, this wax adds an extra layer of water-repellant protection that rivals and beats many cars wax on the market today. Since it's specifically formulated for fiberglass exteriors, it is also easy to apply onto the relatively delicate surface without worrying about damage.

Coming in a 32-fluid-ounce bottle, the wax offers a lot of liquid to cover the large surface area of most common RVs. By far, the standout feature of this wax is the water-repellent capabilities it has. On boats, the wax does a great job of sticking onto the hull while fully submerged. On RVs, the protective coating sheds and beads water in rainy or snowy conditions. The wax buffs well (either by hand or power buffer) to a nice shine.

When it comes to working with the wax, the application is relatively easy, but you may find it is a bit sensitive to the surrounding environment. Like most waxes, application in direct sunlight isn't recommended. In fact, the wax's drying time greatly varies depending on the outside temperature; it has a sweet spot of around 60 degrees for good, workable drying time. Anything higher makes it dry too fast; anything too low makes it difficult to apply and remove properly.

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Best Fiberglass RV Wax Value: TR Industries Gel-Gloss Wash and Wax

TR Industries Gel-Gloss Wash and Wax
Amazon

TR Industries' Gel-Gloss RV Wash and Wax fit into the same category as many budget-friendly car washes: It works quickly, and you get a lot of value for a small price tag. The formula contains a fiberglass-friendly washing solution mixed with a carnauba-based wax. Combined with the 128-ounce bottle, this wash-and-wax combo gives you plenty of liquid to tackle most RVs with some leftover.

As a wash-and-wax combo, the Gel-Gloss is all about speed and convenience. The liquid suds onto the fiberglass surface and can be rinsed off with water. There isn't much scrubbing required to get basic amounts of dirt and debris off of the surface as well. The finished coat does a good job of protecting the fiberglass against water UV radiation, and light oxidation.

While the finished results are good, it's no substitute for dedicated waxes that offer a better shine and longer life. With that said, it doesn't leave any noticeable stains or marks, but you may notice some minor streaks and water spots in direct sunlight. It's labeled as a no-spot cleaner, but spots can develop in sunny conditions if you don't give it a hand in drying with a microfiber towel or cloth. 

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Best Fiberglass RV Wax Honorable Mention: Meguiar's Marine/RV Fiberglass Restoration System

Meguiar's Marine/RV Fiberglass Restoration System
Amazon

Meguiar's Fiberglass Restoration Kit is the type of combination product to choose when you need to give some tender love and care to your RV (or boat). The included cleaning products are designed to restore a fiberglass finish from an advanced dirty state that can't be cured by water and soap alone. In total, the kit comes with three separate bottles: an oxidation remover, a polish, and Meguiar's Pure Wax.

The 16-ounce bottle of liquid wax is fairly easy to apply to fiberglass surfaces and goes on quickly to cover the large surfaces of an RV or boat. Responding well to hand and power application, the wax doesn't leave much in terms of noticeable black streaks or spots when properly removed. Once on the fiberglass, the wax dries to a haze before removal, so a quick dry test (running your finger over it to see if it lifts off) will be necessary.

Combined with the other two 16-ounce bottles in the kit, the wax does a good job of restoring discolored and stained fiberglass surfaces, but it can be difficult to get the best results if the three steps aren't done correctly. As a result, the process is very time consuming if done by hand, but you may find getting the best look possible easier to achieve when skipping the power applicators and buffers. 

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Tips

  • Remove as much dirt as possible before applying wax to your RV. Anything left on the surface will be more likely to get sealed in by the wax, making it more difficult to get it off later. 
  • Fiberglass waxes are generally safe for use on cars, SUVs, travel trailers, and trucks as well. 
  • Pay attention to other materials on your fiberglass RV. Decals, aluminum sidings, and other materials may require a different type of wax if you want to cover the entire RV.
  • You can use a small piece of fiberglass to test and try out different waxes to see what results you can get. Extra fiberglass also makes it easy to practice your application to get the best results before working on your RV.

FAQ

Q. What makes RV wax different from normal wax?

A. Generally, the level of abrasiveness is lower than normal waxes. This is so the wax is less likely to scratch delicate surfaces like fiberglass.

Q. What do I need to wax an RV?

A. A simple microfiber cloth or pad is generally all you need to wax on an RV’s surface. You can also check out power applicators to speed things up if you have the experience and skill.

Q. What else do I need to do to clean an RV?

A. You'll need to give your RV a good wash and maybe polish to get the best finish. Some companies offer complete detailing kits, but you can also use individual washes and polishes if you have your favorites. A ladder or pole can also you help reach the RV roof. 

Final Thoughts

Taking the top spot as the best RV wax for fiberglass surfaces is the Meguiar's M6332 Premium Wax for its excellent water-repelling abilities and good looking shine.

Our value pick is the TR Industries Gel-Gloss Wash and Wax. If you want a quick wash-and-wax combo, this is the one to choose.

Give us your thoughts on the best wax products for fiberglass RVs in the comments below.