
Refinishing a plastic shower base is a cost-effective way to revamp your bathroom. The process is similar to refinishing a wooden tabletop or a car body. It involves scuffing the surface with sandpaper, cleaning the base, priming, and painting. You will need a two-part epoxy paint specially formulated for plastic shower pans, which typically includes epoxy, hardener, application tools, and cleaning supplies. Before beginning the refinishing process, it is important to protect the surrounding area from overspray and drips, and to ensure you are wearing protective gear to avoid inhaling harmful chemicals.
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What You'll Learn
- Prepare the area: Cover the surrounding walls and floor with plastic tarps, masking tape, and paper
- Clean the shower base: Use a razor scraper to remove soap scum and trisodium phosphate (TSP) to wash the base
- Sand the surface: Use 220-grit sandpaper to dull the finish and smooth out rough patches
- Repair cracks and holes: Mix filler and hardener, spread on holes, and sand repairs flat
- Paint the base: Use epoxy spray paint, following the manufacturer's instructions, and add a non-slip texture if desired

Prepare the area: Cover the surrounding walls and floor with plastic tarps, masking tape, and paper
When refinishing your shower base, it's crucial to safeguard the surrounding areas from paint splatters and chemical spills. The first step is to cover the walls and floor adjacent to the shower with plastic tarps or sheets. This protective layer will act as a shield, preventing any unwanted paint from adhering to these surfaces.
Next, secure the plastic coverings in place with masking tape. Painter's tape is specifically designed for this purpose and is gentle on walls, ensuring that it won't damage the surface when removed. Apply the tape along the edges of the plastic sheeting, creating a tight seal. This step is especially important if you're using epoxy paint, as it can create a strong bond with surfaces other than the intended shower base.
Additionally, consider using masking paper in conjunction with the tape. This paper is typically thin and can be easily affixed to the walls with the tape, providing an extra layer of protection. It is particularly useful for covering any exposed areas that the plastic tarps might not cover.
By taking these precautions, you can effectively prepare the area, ensuring that the refinishing process is contained and doesn't inadvertently affect other parts of your bathroom. This preparation will save you time and effort in cleaning up potential messes and will help ensure a professional-looking result.
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Clean the shower base: Use a razor scraper to remove soap scum and trisodium phosphate (TSP) to wash the base
When refinishing a plastic shower base, the first step is to clean the shower base thoroughly. This can be done using a razor scraper and trisodium phosphate (TSP).
Start by using a sharp razor scraper to remove caked-on soap scum from the smooth parts of the shower pan, including the curb. Be careful not to scrape any textured portions of the shower base. You can also use the razor blade to remove any caulking on the curb, sides, or floor of the shower base. When using a razor, hold it at an angle to avoid scratching the surface.
Next, mix trisodium phosphate (TSP) with warm water to wash the shower base. TSP is a powerful and versatile cleaning agent that is often used to prepare surfaces for painting or refinishing. It is excellent for removing soap scum, grease, grime, and other tough debris. When mixing TSP, it is important to follow the package directions regarding dilution ratios, mixing instructions, and safety precautions. A typical dilution ratio is 1/2 cup of TSP to 2 gallons of warm water. Once you have mixed the TSP and water, thoroughly wash the shower base and rinse well.
It is important to note that TSP can irritate mucous membranes if inhaled, so ensure good ventilation when using it. Additionally, TSP can cause skin irritation and eye damage, so wear protective gear, such as long sleeves, waterproof work gloves, and eye protection, when working with it.
By following these steps, you can effectively clean and prepare your plastic shower base for refinishing.
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Sand the surface: Use 220-grit sandpaper to dull the finish and smooth out rough patches
Sanding the surface of your plastic shower base is an important step in the refinishing process. It helps create a dull finish, which allows the new paint to adhere correctly. It also smooths out any rough patches, ensuring a uniform surface for the new coating.
For this step, you'll need 220-grit sandpaper. This specific grit size is ideal for scuffing the surface without causing excessive damage. Start by wrapping a plastic bag around the showerhead to prevent any water from dripping onto the work area. Then, use the 220-grit sandpaper to scuff the entire shower base. Keep sanding until the base is dull and no longer shiny. Pay extra attention to any textured portions of the shower base, as these areas may require more effort to dull.
It's important to be thorough during this process. Make sure you reach all areas of the shower base, including the curb, sides, and floor. If there are any rough patches or overspray spots, use the sandpaper to smooth them out. This step will help you achieve a uniform and even surface for the new finish.
Always wear protective gear, such as rubber gloves, protective goggles, and a respirator, when sanding. The process can create dust and small particles that you don't want to inhale or have come into contact with your skin. Take your time and work in a well-ventilated area to ensure a safe and effective sanding process.
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Repair cracks and holes: Mix filler and hardener, spread on holes, and sand repairs flat
When repairing cracks and holes in a plastic shower base, you will need a repair kit that includes epoxy filler and hardener. Before you begin, make sure to clean the area around the crack or hole thoroughly using isopropyl alcohol and a rag. This will ensure that no dirt or debris gets in the way of the repair.
Next, mix the epoxy filler and hardener according to the instructions provided in the kit. The epoxy filler will likely come in a paste form, so use a putty knife to carefully spread the paste into the crack or hole, removing any excess material as you go. It is important to fill the crack or hole generously, but be careful not to overfill it.
Once you have applied the epoxy filler, let it set and dry. The time it takes for the filler to set will depend on the product you are using, so refer to the manufacturer's instructions. After it has set, use sandpaper to sand the repair flat and smooth. Depending on the kit, you may need to use 220-grit or 400-grit sandpaper.
If you are repairing a hairline crack, it is recommended to drill a small stop hole at each end of the crack to prevent it from spreading further. You can also inject spray foam or tile grout into a series of small holes around the crack to provide additional support and prevent flexing.
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Paint the base: Use epoxy spray paint, following the manufacturer's instructions, and add a non-slip texture if desired
To paint your plastic shower base, you will need to use a two-part epoxy paint, specifically formulated for plastic shower pans. You can buy a kit that contains epoxy and hardener, application tools, and cleaning supplies. Some kits also include a special primer. Before you begin, ensure you have protected the surrounding areas from overspray and drips with painter's tape, drop cloths, and plastic sheets. It is also important to wear protective gear, such as rubber gloves, protective goggles, and a respirator.
Once you are ready to paint, follow the manufacturer's instructions for the paint you have purchased. Mix the paint with the hardener, stirring it well. At this stage, you can add a non-slip texture to the mixture if you wish. If you are planning on applying two coats, transfer half of the paint to another container before adding the hardener.
Apply the paint with the applicator that comes with the kit, or use a foam brush or roller. Spray on three coats, letting each coat dry before applying the next. Use fine-grit sandpaper to smooth any rough patches or overspray spots, and clean up any debris before spraying on the next coat.
Once the final coat has dried, carefully remove the masking tape and plastic sheeting. Inspect the shower base for any imperfections or missed spots, and touch up as needed. Allow the finish to cure for the recommended time before using the shower.
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Frequently asked questions
You will need a refinishing kit, which typically includes epoxy, hardener, application tools, and cleaning supplies. You may also need a separate repair kit if there are holes or cracks in the shower base. Don't forget to get protective gear like rubber gloves, goggles, and a respirator.
Start by cleaning the shower pan and removing any soap scum or caulking with a sharp razor scraper. Then, mix trisodium phosphate (TSP) with warm water and thoroughly wash the shower base before rinsing well.
Use 220-grit sandpaper to scuff the entire shower base to dull the finish. Make sure no shiny spots remain. If there are holes or cracks, use a filler and hardener to repair them, following the kit instructions.
Before painting, protect the surrounding areas. Tape off the walls and floor with plastic tarps, drop cloths, or sheets, and use painter's tape to prevent spills and overspray.
Yes, ensure the area is well-ventilated, and refer to the manufacturer's instructions for directions on mixing paint and hardener. Wear protective gear, especially a respirator, during the painting process.











































