If you are willing to go a few days without a shower, you can refinish that worn and discolored porcelain tub with a tub and tile resurfacing paint like Homax’s Tough as Tile Surface Refinisher.
Step 1: Read the directions carefully and be sure you have all of the supplies needed. Preparation is the key to success. Wear gloves and work in a well-ventilated area, free of dirt and debris.
Step 2: Use a putty knife to scrape away the caulk along the bathtub edges and cover the floor with a heavy drop cloth for protection during the refinishing process.
Step 3: Clean the entire tub surface twice. Once with your regular bathtub cleaner and a second time using a half cup of TSP powder mixed with warm water.
Step 4: Scour the surface to be painted with #000 steel wool. Rinse and dry completely then repeat the process two more times, for a total of three scourings. The multiple scouring and rinsing process will help break down the tub’s porcelain finish and allow the tile paint to adhere properly.
Step 5: Once the tub is scoured and dry, wipe the entire surface with a tack cloth or a rag soaked in mineral spirits to remove any dust or debris.
Step 6: Remove the drain cover plate and use newspaper and painter’s tape to mask off the overflow plate, faucet and wall edges.
Step 7: Follow the manufactures directions and brush on a thin coat of paint, using a good quality natural bristle brush. After the first coat has been applied, secure the can lid tightly and seal the can and brush in a plastic bag.
Step 8: Wait two to four hours for the paint to dry. Apply a second coat, keeping each coat thin to avoid runs and drips.
Step 9: Allow the surface to dry for a minimum of 72 hours. After it has dried completely, carefully remove any painter’s tape and paper. Reapply a smooth bead of caulk as needed around the tub. Allow the caulk to set thoroughly before slipping into that nice, hot luxurious bath in your newly refinished tub!