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.
Things You'll 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
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.
- Photo Credit Jupiterimages/Polka Dot/Getty Images
How to Repair a Porcelain Bathtub Scratch
A bathtub is a significant part of your bathroom, and if it has a scratch or blemish, it detracts from the look...
How to Repair an Enamel Bathtub
Even a tiny scratch can mar the appearance of any otherwise pristine porcelain enamel bathtub. Fortunately, repairing small blemishes and minor damage...
How to Repair a Rusted Steel Tub Drain
Steel tub drains are recognized for their durability, resistance and longevity. They, however, are not impervious to deterioration. Exposure to water, carbon...
1950s Porcelain Covered Metal Sink
Porcelain-covered metal sinks possess a sense of nostalgia for many people. Porcelain-coated sinks have been in use since the late 1800s and...
Tips for How to Paint Steel Bathtubs
Bathroom renovations improve the visual aspect of the room, make it feel new and clean, and increase the value of a home...
Porcelain Over Steel Bathtub Installation
Porcelain over steel bathtubs are made of thin steel with a heat-fused porcelain enamel coating. The porcelain enamel gives the tub a...