As a home improvement specialist with extensive experience in various renovation projects, I can provide you with a detailed guide on how to spray paint a fiberglass tub. Painting a fiberglass tub can be a practical and cost-effective way to refresh its appearance and extend its life. Here’s a comprehensive step-by-step process:

### Materials Needed
- Fiberglass Tub: The surface you will be working on.
- Tub & Tile Refinishing Kit: Such as the Rust-Oleum brand, which is designed for use on surfaces like porcelain, ceramic, and fiberglass.
- Spray Paint: Specifically designed for bathtubs, ensuring compatibility with the refinishing kit.
- Sandpaper: Various grits, starting with a coarser grit and finishing with a finer one.
- Cleaner: A non-abrasive cleaner to remove soap scum and grime.
- Rags: For cleaning and wiping.
- Drop Cloth: To protect the surrounding area.
- Painter’s Tape: To mask off areas not being painted.
- Spray Gun: If not using an aerosol can, you’ll need a spray gun and an air compressor.

### Preparation

1. Clean the Tub: Begin by thoroughly cleaning the tub to remove any soap scum, grime, and dirt. Use a non-abrasive cleaner and a sponge or soft cloth. Rinse well and let it dry completely.

2. Sand the Surface: Start with a coarser grit sandpaper to remove the gloss and any imperfections. Be sure to sand the entire surface evenly. Progress to finer grits to achieve a smooth finish.

3. Vacuum or Dust Off: After sanding, clean the surface again to remove dust particles. Use a vacuum cleaner with a brush attachment or a damp rag.

4. Mask Off Areas: Use painter’s tape to mask off any areas you do not want to be painted, such as fixtures and the tub’s rim.

### Application

1. Prepare the Paint: If you’re using a two-part epoxy paint, mix the components together in the provided container until you achieve a uniform color.

2. Apply the Primer: The refinishing kit will likely include a primer. Apply it according to the manufacturer’s instructions, usually with a brush or roller. Allow it to dry as directed.

3. Apply the Paint: Shake the can of spray paint well before use. Hold the can about 10-12 inches away from the tub and apply in a sweeping motion, overlapping each pass slightly. Apply multiple thin coats rather than one thick one.

4. Sanding Between Coats: Lightly sand between coats with fine-grit sandpaper to ensure good adhesion. Clean off any dust before applying the next coat.

5. Final Coat: Apply the final coat of paint, ensuring an even and smooth finish.

### Curing and Maintenance

1. Curing Time: Allow the paint to cure for the time specified by the manufacturer, typically 24-48 hours.

2. Avoid Use: Do not use the tub during this curing period.

3. Sealing: Some kits may include a sealer to protect the paint job. Apply as directed.

4. Maintenance: After the tub is ready for use, clean gently with non-abrasive cleaners to preserve the finish.

### Safety Precautions
- Always work in a well-ventilated area.
- Wear protective gear such as gloves, goggles, and a mask.
- Follow all safety instructions provided with the paint and refinishing kit.

### Conclusion
Painting a fiberglass tub can be a rewarding DIY project that can save you the cost and hassle of replacement. By following the steps outlined above and using the right materials, you can achieve a professional-looking result that will refresh your bathroom and extend the life of your tub.

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To paint my bathtub, I used a bathtub paint from Rust-Oleum called Tub & Tile Refinishing Kit. ... It's a two-part epoxy paint that you mix together in the one-quart container (no additional container needed--just use the Part B container). You can use it on porcelain, ceramic, and fiberglass.Feb 11, 2013read more >>