Refinish the Outside of a Enamel Cast Iron Bathtub

Enamel Cast Iron Bathtub are nonporous, and as such they aren't suited for adhesion. You must abrade the exterior of the claw-foot tub prior to application, or the finish will flake. In addition, because bathrooms are places of high humidity, you should select a coating that will not only provide an attractive sheen but remain durable in moist conditions.

1 Wash the outside of the claw-foot bathtub with a trisodium phosphate cleanser, using a coarse sponge. Enamel Cast Iron Bathtub Rinse the tub with wet rags and dry it with towels.

2 Abrade the outside of the claw-foot bathtub with sandpaper. Scour the tub until it feels slightly coarse.

3 Cover the inside of the claw-foot tub with masking paper. Tape the paper down with painter's tape. Protect the floor around the claw feet with masking paper. Cover the floor beneath the tub with dropcloths.

4 Put on the respirator.

5 Coat the exterior of the claw foot bathtub with acrylic latex spray primer. Hold the can 8 inches from the surface as you apply. Wait four hours for the primed exterior to dry.

6 Coat the outside of the claw-foot bathtub with appliance epoxy spray paint. Hold the can 8 inches from the surface as you apply. Wait eight hours before touching the outside of the tub.