Preparation

• If there are cracks or the paint inside your bathtub is peeling, scrub or peel it off entirely. If there is rust, you or a professional will have to sandblast it off.
  
  

Type of Paint

• Oil-based enamel or latex paint made for bathtubs can be used for painting the inside a cast iron tub.
  
  

Advantages

• Enamel paints are long lasting and will work with cast iron bathtubs, even after many uses.
  
  

Considerations

• Prep your cast iron tub with rust resistant primer prior to painting so that your paint will hold better.
  
  

Cleaning Tips

• Keep your cast iron tub clean with a few drops of mild dish detergent and a gallon of hot water. Remove soap scum with baking soda and warm water. Do not use abrasive materials to scrub the tub.