How to Redo a Porcelain Tub

Clean your tub thoroughly before beginning to work on it. The tub should be scrubbed free of any soap scum or other grease or oils and then dried completely.

Choose a color for your porcelain tub. Refinishing kits often come in different colors, but you may be unable to find an exact match.

Open a window or door to provide adequate ventilation during the repair and refinishing process.

Remove any rust on the tub surface with a wire brush.

Repair any cracks or chips in the tub with a commercial repair kit, according to the manufacturer's instructions. Generally you must wipe the cracked or chipped area with acetone (or nail polish remover) and then apply the bonding agent with a small brush. Wait for the repairs to dry before continuing.

Smooth the repairs with a fine grade of sandpaper if necessary and then wipe the dust clean.

Remove all silicone and caulk from around the bathtub.

Cover the fixtures, drains and the surrounding areas with paper and masking tape as needed.

Wipe the entire tub down with acetone before applying the bonding agent. Let the acetone evaporate before continuing.

Spray a light coat of the bonding agent across the entire tub starting at the drain area, according to the manufacturer's instructions. Overlap each stroke by about 50 percent to avoid running.

Wait between five and 15 minutes for the bonding agent to set up and then apply the refinishing coat.

Spray the refinishing coat, holding the can about 6 to 8 inches away from the surface, spraying in short motions. Avoid splatters by clearing the spray nozzle often as you work. Let the refinishing coat cure for the amount of time recommended in the instructions, usually at least 12 hours.