How To Fix a Chipped Bathtub: A Step-by-Step Guide

A chipped bathtub can be an eyesore in your otherwise pristine bathroom. Luckily, you can easily repair any damaged porcelain or acrylics with the right tools and techniques. Learn how to fix a chipped bathtub in our step-by-step guide below, which also includes tips on how to properly assess the damage, how to correctly match the color of your tub, and how to prevent any future damage to your little sanctuary.

Assessing the Damage: When To DIY vs. Call a Professional

Determine how damaged your tub is before beginning your do-it-yourself project. You can fix small chips and nicks yourself, but larger damage may require professional attention. 

Consider the factors below when deciding whether to handle repairs yourself or call a professional:

• Depth: Surface-level chips are easier to fix than deep chips.
• Location: Damage in high-stress areas, such as near drains or faucets, may require professional repair.
• Size: Most DIYers can repair chips that are smaller than a quarter.
• Skill level: Only repair damage if you’re comfortable performing the necessary steps.

Essential Materials and Tools for Bathtub Chip Repair

Learn which supplies you’ll need to complete your bathtub repair below. 

Repair Compounds and Color Matching

A repair compound is the most important component of your kit. Choose a compound that’s specifically designed for bathtub repairs and matches your tub’s color and material. Options include the following:

• Acrylic repair products
• Epoxy-based compounds
• Porcelain repair kits

If your tub is an unusual color, find a kit that allows you to create a custom shade.  

Cleaning and Preparation Supplies

Gather the following cleaning and preparation supplies: 

• Degreaser and sponge for cleaning
• Lint-free cloth for drying
• Painter’s tape to protect surrounding areas

Application and Finishing Tools

The following application and finishing tools will help you to smooth the repair compound:

• Mixing stick for two-part compounds
• Small paintbrush or plastic putty knife for application
• Spray bottle for wet sanding
• Ultra-fine sandpaper (2,000 grit) for finishing

Step-by-Step Process to Fix a Chipped Bathtub

Follow the steps below carefully to fix your chipped bathtub. Take your time, pay attention to details, and allow each layer to dry completely before adding the next.

Preparing the Damaged Area

1. Clean the chipped area thoroughly with a degreaser and a sponge to remove any soap residue, oils, or dirt.
2. Dry the area completely with a lint-free cloth.
3. Apply painter’s tape around the chip to protect the surrounding surface.
4. Place extra tape below the chip to catch any drips if the chip is on a vertical surface.

Mixing and Applying the Repair Compound

1. If you’re using two-part compounds, mix equal amounts of each substance on a piece of cardboard until the color and consistency are even.
2. If you’re using one-part compounds, shake the bottle according to the manufacturer’s instructions.
3. Use a small paintbrush or plastic knife to apply a thin layer of compound to the chip.
4. Allow the first coat to dry completely.
5. Apply additional thin coats as needed, and allow each to dry between applications.
6. Build the layers until the repaired area is slightly higher than the surrounding surface.

Avoid pooling the compound to prevent running and encourage faster drying.

Sanding and Finishing the Repair

Once the final coat of your compound is dry, you can finalize your repair by following these steps:

1. Gently remove the painter’s tape.
2. Spray the repaired area with water.
3. Gently sand the edges with ultra-fine sandpaper so that it blends in with the tub’s surface. Keep the sandpaper and repair area wet while you sand.
4. Feel around for any ridges or high spots, and sand them until they’re smooth.
5. Apply more compound if necessary, and repeat the process for a perfect finish.

Tips for a Seamless Repair of a Chipped Bathtub

Here are some additional tips to ensure your repair is successful:

• If you’re handling deep chips, apply the compound in multiple thin layers instead of one thick layer.
• If you’re handling large chips, apply a fiberglass mesh patch before the repair compound. This will strengthen your repair.
• Sand with progressively finer grits to blend the repair as much as possible.
• Use a kitchen and bath polish several days after the repair to blend the area more successfully.

How To Prevent More Bathtub Chips

Use these preventive measures to minimize the risk of future chips: 

• Address small chips or cracks immediately.
• Avoid dropping heavy objects in the tub.
• Clean the tub regularly with non-abrasive cleaners.
• Use a nonslip bath mat to protect the tub’s surface.

Safety Considerations When Using a Repaired Bathtub

Keep the safety tips below in mind after you’ve completed your repair project: 

• Allow the repair to cure fully before using the tub. This can take up to 48 hours.
• Avoid using bath oils or harsh chemicals immediately after the repair.
• Don’t wax the tub, especially if it’s porcelain. This can make it very slippery.
• Monitor the repaired area for any signs of lifting or peeling.

Maintaining Your Repaired Bathtub

Get in the habit of regularly cleaning and maintaining your bathtub to prevent future damage. Clean the area with mild, nonabrasive cleaners, and use soft sponges or cloths rather than harsh scrubbing tools. Rinse the tub thoroughly after each use to prevent soap scum buildup.

Check the repaired area routinely for signs of wear. If it begins to deteriorate, reapply a thin layer of compound. We recommend reapplying a bathtub refinishing kit every few years.