Things You Will Need
- Porcelain touch-up kit
- Eye protection
- Drop cloth
- Sandpaper (various grits from #220 to #1000)
- Shop vac or portable vac
- Water putty
- Plastic spreader
- 2-part epoxy
The method for repairing damaged porcelain on steel tubs depends on the extent of the damage. Apply a porcelain touch-up kit for minor surface scratches.
If you have gouges or deep holes in your tube, you'll have to prepare the surface and use a filler or epoxy to replace the missing porcelain. Use a drop cloth to protect your tub and protective goggles or glasses for your eyes.
Touch-Up Kit for Minor Scratches
- Mix equal parts of hardener and catalyst in the mixing cup. Stir using the provided stick.
- Apply one coat and allow it to dry for about 30 minutes.
- Apply a second coat and let it dry for the same amount of time. Two or three coats should provide a nice, shiny coat of porcelain.
Porcelain Repair for Gouges
- Sand down the affected area by starting with 220-grit sandpaper to remove any loose porcelain flakes. Repeat the sanding process, each time using a finer grade sandpaper, until you reach 800-grit or 1000-grit. Sanding the damaged area in layers removes all of the imperfections.
- Vacuum the loose debris and rub the immediate area with acetone, using a rag.
- Fill the gouge with water putty--a waterproof filler--if the gouge is more than 3/8-inch deep. Apply the water putty with a plastic spreader and let it dry for several hours.
- Apply the porcelain repair kit hardener and catalyst (see Touch-Up Kit section above).
Repairing Deep Holes
- Mix equal parts of epoxy activator and hardener, using the provided bowl and mixing stick.
- Fill the holes with the epoxy mixture. The epoxy forms a strong base, replacing sections of missing porcelain. Let the epoxy dry for 48 to 72 hours.
- Repeat the sanding process as described in the Porcelain Repair section.
- Finish the job by using the porcelain repair kit from above. You may need more than one kit, depending on the size of the damage.