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How to Wax a Fiberglass RV

Waxing your fiberglass RV is not only about aesthetics but also essential for its longevity and protection against the elements.

Fiberglass surfaces can be delicate, and the right waxing technique can make a significant difference in maintaining the RV’s shine and preventing damage.

In this comprehensive guide, we will walk you through the step-by-step process of how to wax a fiberglass RV effectively.

Our expert tips and first-hand knowledge will equip you with the expertise to achieve a professional-grade waxing job.

How to Wax a Fiberglass RV: Step-by-Step Guide

Gather Your Supplies

Before you start waxing, ensure you have all the necessary supplies:

  • Fiberglass-safe Wax: Choose a high-quality wax specifically formulated for fiberglass surfaces. This ensures compatibility and prevents any potential damage.
  • Microfiber Towels: Use soft and clean microfiber towels for application and buffing. These are gentle on the surface and prevent scratches.
  • RV Cleaner: Clean the RV thoroughly before waxing to remove any dirt, grime, or contaminants that could affect the wax’s adhesion.
  • Water and Hose: Keep water and a hose nearby for rinsing off the RV during the cleaning process.

Clean the Fiberglass Surface

  • Start by rinsing the RV with water to remove loose debris.
  • Use a specialized RV cleaner to wash the entire surface thoroughly.
  • Rinse off the cleaner with water and allow the RV to dry completely before proceeding to the waxing stage.

Apply Wax to Small Sections

  • Divide the RV into small sections for easier application.
  • Take a small amount of fiberglass-safe wax on a clean microfiber towel.
  • Apply the wax in circular motions, ensuring even coverage on the surface.
  • Repeat this process for each section, working your way around the RV.

Let the Wax Dry

  • Allow the wax to dry on the surface as per the product instructions.
  • Drying times may vary depending on the specific wax used, so refer to the manufacturer’s recommendations.

Buff the Wax

  • Once the wax is dry, use a separate clean microfiber towel to buff the surface gently.
  • Buffing enhances the shine and smoothness of the waxed fiberglass.

Inspect for Missed Spots

  • Inspect the RV carefully to ensure there are no missed spots or uneven waxing.
  • Touch up any areas that require additional wax.

Repeat the Process

  • If necessary, repeat the waxing process for an extra layer of protection.
  • Additional coats of wax can improve the durability and longevity of the finish.

Expert Tips for Maintaining Your Wax Finish

  • Regular Cleaning: Keep your RV clean and free from dirt and grime to extend the life of the wax coat.
  • Avoid Abrasive Cleaners: Use only fiberglass-safe cleaners to prevent damage to the waxed surface.
  • Use UV Protectants: Consider applying UV protectants to shield the fiberglass from harmful sun rays.


How often should I wax my fiberglass RV?

For optimal protection and shine, wax your RV at least twice a year. However, if you notice the finish becoming dull or water doesn’t bead up, it’s time to reapply the wax.

Can I use car wax on my fiberglass RV?

No, car wax is not suitable for fiberglass RVs. It may contain chemicals that can damage the fiberglass surface. Always use a wax designed explicitly for fiberglass.

Can I wax my RV in direct sunlight?

It’s best to avoid waxing in direct sunlight, as the heat can cause the wax to dry too quickly, making buffing difficult. Choose a shaded area to ensure optimal results.

Is it necessary to remove old wax before applying a new coat?

Yes, it’s essential to remove old wax and thoroughly clean the surface before applying a new coat. This ensures proper adhesion and prevents any contaminants from getting trapped under the new wax.

Can I use an electric buffer to wax my RV?

While electric buffers can save time, they can also be risky for beginners. Using an electric buffer requires skill to prevent damaging the fiberglass. It’s safer to stick with hand application and buffing.

Will waxing my fiberglass RV remove scratches?

Waxing can improve the appearance of minor scratches by filling them in temporarily. However, it won’t eliminate deep scratches; those may require professional repair.


Waxing a fiberglass RV is a crucial step in maintaining its appearance and protecting it from the elements.

By following our step-by-step guide and expert tips, you can achieve a glossy and durable finish that keeps your RV looking new for years to come.

Remember to use a fiberglass-safe wax, take your time during the application process, and perform regular maintenance to extend the life of the waxed surface.

Now that you’re equipped with the knowledge and techniques, go ahead and give your beloved RV the TLC it deserves.