Old fashioned bathtub trends are often cast iron bodies covered with a layer of porcelain. Iron is virtually indestructible, but wears porcelain, fade and become dull over time. From the new batch of porcelain on the surface of the tub is not a practical solution, refinishing a porcelain tub usually means paint, but it must be done in a specific way, with specialty chemicals, including acid etched eliminate surface gloss of age. This is a very involved project that should not be done yourself unless you have had significant experience with refinishing chemicals. Instructions to refinish old fashioned bathtub
Remove all accessories from the old fashioned bathtub.
Use your plastic sheeting and duct tape to cover all the walls and the ground around it. Tape off any part of the tub that is not porcelain-coated as outer or exposed cast iron decorative claw feet. Put on your protective clothing and a respirator. Ventilate the room. Brush your etching solution on the porcelain, which covers all areas completely porcelain. Let stand for 15 minutes. Rinse thoroughly. Let the tub dry completely.
Load your spray paint primer porcelain. Cover the porcelain tub in a thin, lightweight layer that covers everything but taking care not to allow the drops or scratches. Let the primer dry 30 minutes, and then apply a second coat in the same way. Let dry and apply a third coat. Load your paint sprayer with enamel finish. Apply in the bath in the same way as you did the primer in a thin, light, even layer. Let dry 30 minutes, and then repeat. Apply at least four to six coats. Let the final coat dry for at least 48 hours before reinstalling the accessories and the use of the bath.