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How to Polish RV Fiberglass

Owning an RV is a dream come true for many adventurers and travelers.

However, over time, the RV’s exterior, particularly the fiberglass, can lose its luster due to exposure to the elements.

If your RV’s fiberglass is looking dull and weathered, fear not! In this in-depth guide, we’ll walk you through the process of polishing RV fiberglass effectively.

From the preparation stage to the final buffing, you’ll gain the knowledge and expertise to restore your RV’s glossy finish and protect it from future damage.

Let’s get started!

How to Polish RV Fiberglass

Polishing RV fiberglass requires attention to detail and the right techniques.

Follow this step-by-step guide to achieve excellent results:

Gather Your Supplies

Before you begin, ensure you have all the necessary supplies.

You’ll need:

  • Soft-bristled brush
  • Mild detergent
  • Water hose
  • Microfiber towels or chamois
  • RV fiberglass polish compound
  • Dual-action polisher
  • Polishing pads (foam and wool)
  • Clean cloth or rag

Wash the RV Thoroughly

Start by giving your RV a good wash.

Use a mild detergent and water to remove dirt, grime, and any other surface contaminants.

Gently scrub the fiberglass surface with a soft-bristled brush, paying attention to nooks and crannies.

Rinse and Dry the RV

After washing, thoroughly rinse off the soap with a water hose.

Once the RV is clean, dry it completely using microfiber towels or a chamois.

Ensure there are no water spots left behind.

Inspect the Fiberglass

Carefully inspect the fiberglass surface for any stubborn stains, oxidation, or scratches.

Note down the areas that need extra attention during the polishing process.

Choose the Right RV Fiberglass Polish

Select a high-quality RV fiberglass polish compound that suits your RV’s specific needs.

Test the Polish

Before applying the polish to the entire RV, do a small test on a hidden area to ensure compatibility and avoid any unwanted reactions.

This step is crucial to prevent damage to your RV’s fiberglass.

Begin Polishing

Attach a foam polishing pad to the dual-action polisher and apply a small amount of the fiberglass polish compound.

Work in small sections and apply even pressure while moving the polisher in circular motions.

Remove Oxidation and Scratches

Pay extra attention to areas with oxidation or scratches.

Use a wool polishing pad with the polish compound for more aggressive action.

Gradually switch back to the foam pad for a smoother finish.

Wipe Off Residue

After polishing each section, use a clean cloth or rag to wipe off the excess polish residue.

Check for any missed spots or imperfections and re-polish if necessary.

Apply a Protective Sealant

Once the entire RV has been polished, consider applying a protective sealant to prolong the glossy finish and shield the fiberglass from UV rays and environmental elements.

Buff the Surface

Use a separate clean foam pad on the dual-action polisher to buff the entire RV surface.

This step will ensure a smooth and flawless finish.

Clean and Inspect Again

Clean off any remaining residue and inspect the RV once more to ensure you haven’t missed any spots.

Touch up as needed to perfect the shine.

Maintain the Shine

To maintain the polished shine of your RV’s fiberglass, regularly wash it with a mild detergent and water.

Avoid abrasive cleaning agents that can damage the finish.

Store Your RV Properly

When your RV is not in use, store it in a covered area or invest in a high-quality RV cover to protect it from the elements and maintain the polished appearance.

Frequently Asked Questions (FAQs)

How often should I polish my RV’s fiberglass?

The frequency of polishing depends on various factors, such as climate, storage conditions, and how frequently you use your RV. Generally, it’s a good idea to polish your RV’s fiberglass at least once a year to keep it in top condition.

Can I use a regular car wax instead of an RV fiberglass polish?

While car wax can provide some level of shine, it is not specifically designed for fiberglass surfaces. Using a dedicated RV fiberglass polish will yield better results and protect the fiberglass from deterioration.

Is hand polishing effective for RV fiberglass?

Hand polishing can be effective for small areas and spot treatments. However, for a thorough and consistent finish, a dual-action polisher is recommended, as it distributes the polish evenly and reduces the risk of swirl marks.

Can I polish a severely oxidized fiberglass surface?

Yes, you can polish an oxidized surface, but it may require more effort and multiple polishing sessions. For severely oxidized fiberglass, consider seeking professional help or using a heavy-duty oxidation remover before polishing.

Should I wax my RV after polishing the fiberglass?

Yes, applying a coat of wax after polishing the fiberglass will provide an additional layer of protection and enhance the shine. Make sure to use a wax that is safe for fiberglass surfaces.

Can I use an electric buffer instead of a dual-action polisher?

While an electric buffer can be used, it may not provide the same level of control and safety as a dual-action polisher. Electric buffers can be more aggressive, increasing the risk of damaging the fiberglass surface.


By following this comprehensive guide, you now have the expertise to polish your RV’s fiberglass to a dazzling shine.

Remember to gather the right supplies, wash and inspect the RV thoroughly, and use a quality fiberglass polish compound.

Embrace the process and enjoy the rewarding results as your RV regains its glossy appearance.

Properly maintained fiberglass will not only enhance the aesthetic appeal of your RV but also protect it from potential damage.

Happy polishing!