How To Refinish A Fiberglass Bathtub In 2023

Fiberglass Bathtub & Shower Repair Experts in St Charles IL
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If your fiberglass bathtub is starting to look worn out or has unsightly stains, refinishing it can give it a fresh and appealing look. Refinishing a fiberglass bathtub is a cost-effective alternative to replacing it and can be done with some basic tools and materials. In this article, we will guide you through the process of refinishing a fiberglass bathtub step by step.

Gather the Necessary Materials

Before you begin refinishing your fiberglass bathtub, make sure you have all the necessary materials. You will need a bathtub refinishing kit, which typically includes a cleaning solution, primer, paint, and a topcoat. Additionally, gather some sandpaper, a sponge, a paintbrush, a roller, a drop cloth, and a mask to protect yourself from fumes.

Prepare the Surface

Start by thoroughly cleaning the bathtub with a non-abrasive cleaner to remove any dirt, grease, or soap scum. Rinse it well and allow it to dry completely. Next, use sandpaper or a sanding sponge to lightly roughen the surface of the bathtub. This will help the paint adhere better. Be careful not to sand too aggressively, as you don’t want to damage the fiberglass.

Apply the Primer

Once the surface is prepared, apply the primer included in the refinishing kit. Use a paintbrush to cover the entire bathtub with a thin, even layer of primer. Allow it to dry according to the manufacturer’s instructions. The primer will create a smooth and durable base for the paint.

Paint the Bathtub

After the primer has dried, it’s time to paint the bathtub. Stir the paint in the kit thoroughly to ensure an even color. Use a paintbrush to cut in around the edges of the bathtub and any areas that are difficult to reach with a roller. Then, use a roller to apply the paint to the rest of the surface. Apply multiple thin coats, allowing each coat to dry before applying the next. This will prevent drips and ensure a smooth finish.

Apply the Topcoat

Once the paint has dried completely, it’s time to apply the topcoat. The topcoat provides a protective layer and enhances the durability of the refinished surface. Follow the instructions in the refinishing kit to apply the topcoat evenly. Allow it to dry completely before using the bathtub.

Clean Up

After completing the refinishing process, clean up any spilled paint or materials. Dispose of any used materials properly according to local regulations. Remove the drop cloth and clean the surrounding area. Let the bathtub cure for the recommended time stated in the refinishing kit before using it.

Maintenance Tips

To maintain the newly refinished bathtub, avoid using abrasive cleaners or scrub brushes that could damage the surface. Instead, use a non-abrasive cleaner and a soft sponge or cloth for regular cleaning. Avoid placing heavy objects or sharp items directly on the surface to prevent scratches. With proper care, your refinished fiberglass bathtub will maintain its beauty for years to come.


Refinishing a fiberglass bathtub doesn’t have to be a complicated process. With the right materials and a little bit of time, you can transform your worn-out bathtub into a fresh and inviting space. Follow the steps outlined in this article to successfully refinish your fiberglass bathtub and enjoy a beautiful and rejuvenated bathroom in 2023.