Painting a bathtub is a cost-effective way to restore its surface, upgrade your bathroom’s aesthetics, and extend its life without the high price of a full replacement. Whether you're dealing with a chipped, worn-out, or outdated tub, refinishing it yourself can save hundreds of dollars. Below, we provide a detailed, professional guide to help you learn how to paint a bathtub step by step.

Tools and Materials You’ll Need to Paint a Bathtub

Before starting, make sure you have all the required tools and materials. Having everything ready will streamline the process and help ensure professional results.

Essential Tools and Supplies:

Protective gear: gloves, goggles, and a respirator mask

Painter’s tape and plastic sheeting or drop cloths

Screwdriver (to remove hardware)

Razor scraper or utility knife

Sandpaper (400 to 600-grit or wet/dry sanding block)

Trisodium phosphate (TSP) or another heavy-duty cleaner

Tub and tile refinishing kit (preferably epoxy-based)

Foam roller and brushes

Caulk remover and fresh caulk (optional)

Step 1: Prepare the Bathroom for Bathtub Painting

Thorough preparation is key to success.

1. Ventilation:
Open all windows and doors. Use fans to increase airflow. The fumes from tub refinishing products can be harmful if inhaled.

2. Cover Surroundings:
Use plastic sheeting and painter’s tape to protect tiles, fixtures, walls, and floors from overspray and drips.

3. Remove Hardware:
Unscrew and remove drain covers, faucets, or shower doors. It’s crucial to work on a clean, obstruction-free surface.

Step 2: Clean and Degrease the Bathtub Surface

Clean the surface thoroughly with TSP or another degreaser. Soap scum, oils, and other residues can prevent the epoxy paint from bonding.

Scrub the entire surface, paying extra attention to corners and around the drain.

Rinse with warm water and dry completely using a lint-free cloth.

Pro Tip:
Repeat this cleaning process twice to ensure no residues remain.

Step 3: Sand the Tub Surface for Maximum Adhesion

Sanding is crucial for promoting paint adhesion.

Use 400 to 600-grit sandpaper or a sanding block.

Sand the entire surface evenly until it feels dull and slightly rough.

Rinse off sanding dust and dry with a clean towel.

Don’t skip this step even the best refinishing kit won’t adhere well to a glossy surface.

Step 4: Repair Chips and Cracks

Before painting, fill any nicks, chips, or cracks in the surface.

Use a waterproof epoxy repair kit designed for bathtubs.

Apply filler, smooth it with a putty knife, and let it cure.

Sand the repaired areas to make them flush with the tub surface.

Step 5: Mask Off Surrounding Areas

Using painter’s tape, cover the edges around the tub, drain, fixtures, and anywhere else you don't want paint.

Be precise with taping to prevent sloppy lines.

Lay plastic or drop cloths to protect the floor.

Step 6: Apply the Tub and Tile Refinishing Paint

Choose a high-quality refinishing kit. Most come with two-part epoxy paint, which is highly durable and water-resistant.

Mixing the Paint:

Follow the manufacturer’s instructions exactly.

Mix the components thoroughly for the chemical bond to activate.

Application:

Use a foam roller for large areas and a brush for corners and edges.

Apply in thin, even coats to avoid drips or bubbles.

Allow proper drying time between coats, typically 1–2 hours.

Pro Tip:
Apply two to three coats for a smooth, long-lasting finish.

Step 7: Let the Bathtub Cure Properly

Curing time is critical. The newly painted surface must fully cure before it can be used.

Let the bathtub cure for at least 48–72 hours.

Avoid touching or placing objects in the tub during this time.

Impatience can ruin your work. Curing allows the epoxy to harden and become resistant to moisture and wear.

Step 8: Reinstall Hardware and Clean Up

Once the surface is fully cured:

Carefully remove all painter’s tape and protective coverings.

Reinstall fixtures, hardware, and accessories.

Re-caulk edges around the tub if needed.

Final Cleaning:

Wipe the tub with a soft, damp cloth.

Do not use abrasive cleaners, which can scratch the fresh surface.

Maintenance Tips to Extend the Life of a Painted Bathtub

A professionally refinished tub can last 5 to 10 years with proper care.

Avoid:

Abrasive sponges or scouring pads

Bleach-based or ammonia-based cleaners

Bathmats with suction cups (they can lift the paint)

Use:

Mild dish soap or non-abrasive bathroom cleaners

A soft cloth or sponge for cleaning

Routine rinsing to prevent soap scum buildup

When Not to Paint a Bathtub

Some situations may call for full replacement or professional refinishing.

Structural damage such as large cracks or rust holes

Tubs made of flexible plastic that won’t hold epoxy well

Previously refinished tubs that are peeling or uneven

In such cases, consult with a contractor before investing time in a DIY refinishing job.

Worth reading alongside this: 9 best freestanding bathtub faucet.

If that matters to you, our piece on step guide to installing commercial goes further.

Conclusion

Knowing how to paint a bathtub gives you the power to transform your bathroom without breaking the bank. With the right tools, techniques, and care, your tub can look brand new and provide years of use. By following each step carefully, you ensure durability, aesthetic appeal, and professional results right from your own home. For more information on potential hazards, refer to this CDC resource.