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Published: May 4, 2024

How to Refinish a Fiberglass Shower Stall: A Comprehensive Guide

You might notice your shower stall looking a bit sad with stains, cracks, or just that overall dullness. Instead of going all out and replacing it which can be super expensive, why not refinish it? It’s easier on your wallet and way better for the planet. You’re not just saving money but also keeping all that junk out of the landfill and cutting down on the resources needed to make new stuff.


In this guide, we will walk you through the whole process on how to refinish a fiberglass shower stall step by step. We’ll start with getting the surface ready and end with that final, satisfying coat of finish. By the end, your shower stall will look like it just came out of the showroom. 


So, let’s dive in and get your bathroom looking fresh and fabulous!


Benefits of Refinishing a Fiberglass Shower Stall


One of the primary reasons for refinishing a fiberglass shower stall is the cost savings. Refinishing is considerably less expensive than replacing the entire unit. This cost difference allows homeowners to allocate funds to other home improvement projects or savings without sacrificing the quality and functionality of their bathroom.

Time Efficiency

When considering how to refinish a fiberglass shower stall, it's important to recognize the time efficiency of this option. Refinishing a shower stall can be completed in a fraction of the time it takes to remove and replace one. This means less disruption to your daily routine and quicker turnaround to enjoy your newly refreshed bathroom.

Environmental Impact

Choosing to refinish a fiberglass shower stall also supports environmental sustainability. This process reduces waste by extending the life of the existing stall, thereby minimizing the amount of material that ends up in landfills. Additionally, it lowers the carbon footprint associated with manufacturing and transporting new materials. For homeowners looking to make eco-friendly choices, refinishing is a beneficial strategy.

Assessing the Condition of Your Fiberglass Shower Stall

Inspect for Signs of Wear and Tear

Closely examine your fiberglass shower stall for any visible signs of wear and tear. Look for:


Inspect the surface of the stall for any small or large cracks that may have developed over time.


Check for any holes or punctures in the fiberglass material.


Assess whether the stall has become discolored or faded, indicating potential damage to the surface.

Determine the Extent of Damage

If you notice only minor issues, such as small cracks or slight discoloration, your fiberglass shower stall is likely a good candidate for refinishing. These types of problems can typically be addressed through the refinishing process. However, if you observe more extensive damage, such as large cracks, deep gouges, or significant structural issues, refinishing may not be the best solution. In such cases, replacement of the entire shower stall may be the more appropriate course of action.

Make an Informed Decision

By carefully assessing the condition of your fiberglass shower stall, you can make an informed decision about whether to proceed with refinishing or consider replacing the entire unit. This initial evaluation is a crucial step in ensuring the success and longevity of your shower stall renovation project.

Preparing for the Refinishing Process

Gather Necessary Materials and Tools

Before starting the refinishing process, make sure you have all the required materials and tools on hand. These may include:


To prepare the surface of the fiberglass for refinishing.

High-quality epoxy paint designed for fiberglass

This paint is specifically formulated for use on fiberglass surfaces.


Choose a brush suitable for applying the epoxy paint evenly.

Safety gear

Wear protective equipment such as gloves, goggles, and a mask to safeguard yourself during the refinishing process.

Clean the Surrounding Area

Thoroughly clean the area around the shower stall to remove any dirt, soap scum, or grime that could interfere with the refinishing process. A clean workspace will help ensure a smooth application of the epoxy paint and a professional-looking finish.

Ensure Proper Ventilation

It is crucial to have adequate ventilation in the workspace where you will be refinishing the fiberglass shower stall. Proper ventilation helps to disperse fumes from the epoxy paint, reducing the risk of inhaling harmful chemicals during the refinishing process. 

Step-by-Step Guide on Refinishing a Fiberglass Shower Stall

Cleaning the Surface

Importance of a Clean Base

To begin, it's crucial to clean the surface of your fiberglass shower stall thoroughly. A pristine surface ensures that the paint adheres properly, which is key to achieving a smooth and lasting finish.

Recommended Cleaning Method

Use a non-abrasive cleaner designed for fiberglass to avoid scratching the surface. Apply the cleaner with a soft cloth or sponge and gently scrub to remove all traces of soap scum, oils, and dirt. Thoroughly rinse with water to ensure complete removal of any residue.

Sanding the Surface

Purpose of Sanding

Once your shower stall is clean and dry, the next step is sanding. Sanding the fiberglass creates a rough surface that helps the new paint adhere better and also removes any subtle imperfections that might affect the finish.

How to Sand Effectively


Use fine-grit sandpaper, such as 400-600 grit, for the best results. Sand evenly across the entire surface, applying consistent, light pressure to avoid overcharging the fiberglass. This step is crucial for ensuring the new paint layers have a solid foundation.

Applying the Paint

Preparing for Painting

After sanding, it's essential to clean the surface again to eliminate any dust from the sanding process. A tack cloth is useful for picking up fine particles and ensuring a clean surface for painting.

Painting Process

Select an epoxy paint specifically designed for use on fiberglass and suitable for wet environments. Use a high-quality paintbrush or a roller designed for smooth surfaces to apply the paint. Begin with thin, even coats, allowing each coat to dry completely before applying the next. Generally, two to three coats will be sufficient to achieve a durable and visually appealing finish.

Tips for Achieving a Professional Finish

Preparing the Work Area

The key to a successful refinishing job is preparation. Start by ensuring your work area is well-lit and well-ventilated. Good lighting will help you spot any imperfections or uneven surfaces as you work, while proper ventilation is crucial for safety, especially when using chemicals and paints.

Using Painter's Tape for Protection

Before you begin applying any product, use painter's tape to cover any surfaces or fixtures that are not meant to be refinished. This includes the shower fixtures, edges, and any adjoining surfaces that might accidentally come into contact with the primer or paint. Painter's tape acts as a barrier, preventing unwanted stains and ensuring a clean, sharp finish.

Priming the Surface

To ensure the best adhesion of the epoxy paint to the fiberglass surface, applying a primer is essential. Choose a primer specifically designed for use on fiberglass surfaces. This will help the paint stick better and last longer, preventing peeling and flaking in the future. Apply the primer evenly, following the manufacturer's instructions for the best results.

Applying Epoxy Paint

After the primer has dried, proceed with applying epoxy paint. Epoxy paint is recommended for fiberglass surfaces due to its durability and resistance to moisture. When applying the paint, take your time to ensure even coverage. Avoid rushing this step to prevent drips and uneven layers, which can detract from the professional appearance of your refinished shower stall.

Inspecting and Touching Up

Once you have finished painting, inspect your work carefully. Look for any missed spots or areas where the paint may not appear as smooth as desired. Apply touch-ups as necessary, paying close attention to maintaining a consistent finish across the entire surface. This attention to detail will ensure that your refinishing job looks professional and is durable.

Common Mistakes to Avoid When Refinishing a Fiberglass Shower Stall

Avoiding the Rush

The importance of patience cannot be overstated when refinishing a fiberglass shower stall. Each stage of the process—cleaning, sanding, and painting—requires sufficient time to be done correctly. Rushing through these steps can lead to unsatisfactory results and may necessitate redoing the work, which can be both frustrating and costly.

Using the Correct Materials

One crucial mistake to avoid is the use of abrasive cleaners or sandpaper on the fiberglass surface. These materials can create scratches or damage the surface, which can complicate the adhesion of paint and primers. Instead, opt for gentler cleaning solutions and sandpapers specifically designed for use on fiberglass.

Choosing the Appropriate Paint

Selecting the right type of paint is vital for the durability of your refinishing job. It's essential to use paint and primer that is specifically formulated for fiberglass and capable of withstanding the humid conditions of a bathroom. Using unsuitable paint can lead to peeling, flaking, and the need for frequent touch-ups or complete redoing of the job.

Maintaining a Refinished Fiberglass Shower Stall


Maintaining a refinished fiberglass shower stall is essential for extending its lifespan and ensuring it remains in pristine condition. Opting for non-abrasive cleaners is crucial as they effectively clean without scratching the delicate finish. It's also important to steer clear of harsh chemicals, which can wear away the surface and cause lasting damage. By prioritizing gentle cleaning methods, you can maintain the integrity and appearance of your shower stall.


Regular cleaning plays a pivotal role in keeping your fiberglass shower stall looking new. Routine maintenance helps prevent the buildup of soap scum and mineral deposits, which can be difficult to remove if left unaddressed. In addition, addressing any chips or scratches immediately is key to preventing underlying water damage. Quick repairs not only preserve the aesthetic appeal of your shower but also protect its structural integrity, ensuring it serves you well for years to come.

Hiring a Professional vs. DIY Refinishing


DIY refinishing of a fiberglass shower stall can be a rewarding project that saves money, but it comes with challenges, especially for those who are not well-versed in the process. The experience of tackling a refinishing project can provide a sense of accomplishment and personalization. However, achieving a professional-grade finish requires specific skills, tools, and materials that may not be readily available to the average homeowner.


On the other hand, hiring a professional to refinish your fiberglass shower stall offers several advantages. Professionals bring a wealth of experience and access to high-quality materials and advanced tools that ensure a superior finish. This level of expertise helps in effectively managing complex aspects of the project that might be overwhelming for a novice. When considering whether to go the DIY route or hire a professional, it's important to assess the complexity of the project, your own skill level, and the quality of the outcome you desire. This approach will help you make an informed decision that aligns with your needs and expectations.



Refinishing a fiberglass shower stall is not only a cost-effective way to update your bathroom but also a highly rewarding DIY project. This process can significantly enhance the overall appearance of your bathroom by giving an old, worn-out shower stall a fresh, new look. 


Instead of spending a considerable amount on a complete replacement, homeowners can achieve remarkable results with refinishing, often at a fraction of the cost. The key to a successful refinishing project lies in meticulous preparation, the right materials, and proper techniques. 


By following a detailed guide, homeowners can ensure that each step is executed correctly, from cleaning and sanding the surface to applying the finish. This thorough approach helps in transforming a dull and dated shower area into a bright, modern space that adds both aesthetic and functional value to the bathroom. This revitalization not only enhances your daily experience but also increases the overall value of your home.


For those looking for professional bathtub and shower refinishing services in Fort Worth, TX, Ft. Worth Refinishing is here to help. Our team of experts can revitalize your bathroom fixtures, ensuring a beautiful and durable finish that meets your vision and budget. Contact us today to learn more about our services and how we can assist with your next refinishing project.

Frequently Asked Questions


Can I refinish a fiberglass shower stall myself? 

Yes, with the right materials, instructions, and patience, DIY enthusiasts can successfully refinish a fiberglass shower stall.

How long does the refinishing process take? 

The process can typically be completed in a weekend, though drying times for paint may extend the total project duration.

Do I need to remove the shower stall to refinish it? 

No, refinishing is done in place. There's no need to remove the shower stall, making it a convenient option for most homeowners.

How much does it cost to refinish a fiberglass shower stall? 

The cost can vary depending on the materials used and whether you choose to DIY or hire a professional. Generally, refinishing is a fraction of the cost of replacement.

How long does a refinished fiberglass shower stall last? 

With proper care and maintenance, a refinished shower stall can last for many years, often upwards of a decade.

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