XXQ DIY Refinishing Fiberglass Showers: Step-by-Step Guide & Tips - Refinishing 101

A black text on a black background.

DIY Refinishing Fiberglass Showers: Step-by-Step Guide & Tips

Posted by

Key Takeaways


  • Fiberglass shower refinishing can breathe new life into your bathroom without the need for a full replacement.



  • Proper preparation, including cleaning and sanding, is critical for a successful refinishing project.



  • Repairing any cracks or imperfections in your fiberglass shower is a necessary step before applying primer and topcoat.



  • Refinishing is cost-effective and can be completed as a DIY project with the right materials and guidance.



  • With patience and attention to detail, you can achieve a durable and long-lasting finish.


Transform Your Bathroom with a Fiberglass Shower Refresh

Ever looked at your fiberglass shower and wished for a change without the hefty price tag of a full remodel? Refinishing your fiberglass shower might be the solution you’re seeking. This process can not only improve the appearance of your shower but also extend its life. Let’s dive into how you can achieve a fresh, new look for your bathroom.

What is Fiberglass Shower Refinishing?

Imagine giving your old, worn-out shower a complete makeover, making it look brand new without removing it from your bathroom. That’s what fiberglass shower refinishing is all about. It involves repairing any damage, prepping the surface, and applying new coatings to revitalize the existing structure. The beauty of this process is that it can be done in a matter of hours and is a fraction of the cost of a replacement.

Why Choose Refinishing Over Replacement?

Choosing to refinish rather than replace can save you not only money but also time and inconvenience. A replacement can involve multiple professionals, potential damage to your bathroom during removal, and days without a functional shower. Refinishing, on the other hand, is a straightforward process that can be done with minimal disruption to your daily routine.

Preparation: Laying the Groundwork for Success

Before you start slapping on paint, there’s some groundwork to be done. Proper preparation is the secret to a refinishing job that doesn’t just look good but lasts for years. It’s the difference between an amateur job and a professional-looking finish. Let’s get your shower ready for its transformation.

Gathering Your Materials

To start, you’ll need to gather the right materials. Here’s a quick list to get you on the right track:


  • A high-quality fiberglass repair kit



  • Cleaning supplies such as non-abrasive cleaners and sponges



  • Sanding tools – think sandpaper or a sanding block with various grits



  • A good-quality primer and topcoat designed for fiberglass



  • Personal protective equipment, including gloves, goggles, and a respirator


Cleaning and Sanding: The First Steps

First things first, you’ll need to thoroughly clean your shower. Any lingering soap scum, oils, or mildew can prevent the new finish from adhering properly. Use a non-abrasive cleaner and put some elbow grease into it. After cleaning, the sanding begins. This isn’t about brute force; it’s about creating a smooth surface for the primer to stick to. Start with a medium-grit sandpaper and finish with a fine-grit. And remember, always sand in a well-ventilated area while wearing your protective gear.

That’s the start of our journey to a refreshed fiberglass shower. Stay tuned for the next steps, where we’ll tackle repairs and the actual refinishing process. Remember, this is about transforming your bathroom into a space you love, so take your time and do it right.

Repair: Fixing Cracks and Imperfections

Now that your shower is clean and sanded, it’s time to address any cracks or imperfections. These blemishes aren’t just unsightly; they can lead to water damage and mold if left unattended. This is where your fiberglass repair kit comes into play. It usually includes a resin and hardener that, when mixed, create a durable patching material.

Evaluating the Extent of Damage

Before you mix up your repair material, take a good look at the damage. Small hairline cracks can often be fixed easily, but larger issues may require a bit more work. If the damage is extensive, don’t despair. Fiberglass is a forgiving material, and with a bit of patience, you can fix it up ‘good as new’.

For small cracks, you can apply the repair material directly. For bigger problems, you might need to use a piece of fiberglass mesh to reinforce the area before applying the repair material. Follow the instructions in your repair kit closely for the best results.

Applying the Repair Kit Components

Once you’ve assessed the damage, mix the resin and hardener according to your kit’s instructions. Use a putty knife to apply the mixture to the damaged area, smoothing it out as you go. If you’re using fiberglass mesh, place it over the area before the mixture dries, then apply another layer of the mixture on top. Allow it to cure as directed—usually for several hours.

Refinishing: The Main Event

With repairs complete, it’s time for the main event: refinishing. This stage is all about precision and attention to detail. The right technique will yield a smooth, high-quality finish that will make your shower look brand new.

Primer Application Basics

Primer is the foundation of your refinishing job. It’s what helps the topcoat stick and what ensures a uniform finish. After your repair material has fully cured, apply a thin layer of primer over the entire shower. Use a roller or a sprayer for an even coat, and be sure to cover every nook and cranny. Let the primer dry completely, which can take a few hours or as specified by the manufacturer.

Topcoat Techniques for a Durable Finish

After the primer has dried, it’s time for the topcoat. This is the layer that will be visible, so take your time. Apply the topcoat in thin, even layers, using a sprayer for the best finish. You might need several coats to get a completely opaque and smooth surface. Make sure each layer is dry before applying the next one. This could mean waiting a few hours between coats, so plan accordingly.

Curing Time: Patience for Perfection

Once the final coat is on, your job isn’t quite finished. The topcoat needs time to cure, and this can take anywhere from 24 to 48 hours. During this time, the finish is hardening and becoming more durable. It’s crucial not to rush this step; using the shower too soon can ruin all your hard work. So, be patient and give it the time it needs.

Finishing Touches: Sealing the Deal

After the topcoat has fully cured, you’re ready for the finishing touches. These final steps are what will set your work apart and ensure a long-lasting finish.

Inspect your shower for any missed spots or imperfections in the topcoat. If you find any, a light sanding and touch-up can fix them. Once you’re satisfied with the finish, it’s time to seal the deal—literally. Apply a silicone caulk around the edges of your shower where it meets the walls and floor. This will prevent water from seeping behind the shower and causing damage.

Final Clean-Up and Sealant Application

Remove any masking tape or protective coverings you used during the refinishing process. Clean up any debris or dust in the area. With a clean, lint-free cloth, give your newly refinished shower a gentle wipe down. Now, step back and admire your work. You’ve just extended the life of your shower and saved yourself a bundle in the process.

Most importantly, remember that maintenance is key to keeping your shower looking great. With proper care, your refinishing job can last for many years to come.

Maintenance Tips to Preserve Shine and Longevity

After all your hard work, you’ll want to keep your shower looking pristine. Here are some quick tips for maintaining the shine and extending the life of your refinished fiberglass shower:


  • Use non-abrasive cleaners to avoid scratching the surface.



  • Avoid harsh chemicals that can damage the finish.



  • Regularly wipe down the shower after use to prevent water spots and mildew.



  • Keep an eye out for any cracks or chips, and repair them promptly to prevent water damage.


There you have it—a complete guide to refinishing your fiberglass shower. It’s a project that might seem daunting at first, but with the right preparation, materials, and a bit of patience, you can achieve results that are both beautiful and durable. Now, it’s time to enjoy your refreshed bathroom oasis.

Frequently Asked Questions

How Long Does Refinishing Last?

A well-done refinishing job can last 10 to 15 years, depending on the level of care and maintenance. It’s important to follow the aftercare instructions provided with your refinishing kit and to treat your shower gently to maximize its lifespan.

Can a Refinished Fiberglass Shower be Cleaned with Regular Products?

Yes, but it’s best to use gentle, non-abrasive cleaning products. Harsh chemicals or abrasive tools can damage the new surface. Always read the labels to ensure the cleaner is safe for use on refinished surfaces.

Are DIY Refinishing Kits as Effective as Professional Jobs?

DIY kits can be very effective if used correctly. The key is to follow the instructions to the letter and not to cut corners. While a professional may have more experience and specialized equipment, a diligent DIYer can achieve impressive results with a kit.

What Safety Precautions Should I Take When Refinishing?

Safety is paramount. Make sure to:


  • Work in a well-ventilated area to avoid inhaling fumes.



  • Wear gloves, goggles, and a respirator mask to protect your skin, eyes, and lungs.



  • Keep children and pets away from the work area.


How Do I Know If My Shower Can Be Refinished?

Most fiberglass showers can be refinished, but if your shower has extensive damage or has been refinished multiple times, it might be time for a replacement. If you’re unsure, consult with a professional before starting your project.

Refinishing your fiberglass shower is a fantastic way to update your bathroom without the expense and hassle of a full remodel. By following this step-by-step guide, you can achieve a professional-looking finish that will last for years. So roll up your sleeves, gather your materials, and get ready to transform your shower into a thing of beauty. It’s a project that’s not only satisfying to complete but will also add value to your home and your daily life.

Author

  • Amna

    Editor & Researcher Amna is a writer and editor with a background in producing engaging content for various publications like Homelight, and many small home improvement businesses around the United States, Canada, and the U.K. A huge fan of shows like Property Brothers and This Old House, she loves learning how to make her home more beautiful, wherever in the world that home happens to be this year.

    View all posts