Owners of metal bathtubs coated with porcelain enamel often find rust begin to . Pour a mild detergent around the hole, cleaning the affected area thoroughly. . Chris Miksen has been writing instructional articles on a wide range of topics for . . an old cast-iron claw-foot bathtub or an enamel-over-steel tub -- you can fix it . Clean the area around the tub with a vacuum that contains a high-efficiency . Fix small holes no larger than a dime with a steel-reinforced epoxy resin and . Bathtub Drain Overflow Rust Hole Repair Here We'll Go Over Both Types Of Repair To Demonstrate The . Images open in light box for larger view. . Opening up the area around the drain & overflow to allow new metal to be fiber-glassed in. We have a cast iron tub in a bath room of a condominium located in a high rise building. . There isn't any way to easily repair such a hole. surface (after a proper prep) and it is high gloss and has certain impact resistancy. Sep 14, 2015 - This is what is used in the boating world to repair holes in fiberglass hulls . wipe surrounding area with a solvent like lacquer thinner to remove . This is what is used in the boating world to repair holes in fiberglass hulls. Wire brush any loose material from the tub wall wipe surrounding area with a solvent . Apr 27, 2015 - Hello Guys, I have a hole in my porcelain bathtub. . Is this a cast iron tub? . JB Weld, so its look like I need to sand that area and do a patch with the JB Glue. . so you have some solid metal verses rust may be a major pain. We have a metal bathtub with porcelain coating that has developed a hole. . Is there a good way to patch this hole, or is the tub going to have to be . If it is rusted through, it probably is a larger area than what you see now . Jun 12, 2013 - You may be asking yourself these questions about repairing a hole in your bathtub: Is the hole too big to repair? . Follow the instructions, apply it, then sand down the patched area with a heavy grit sandpaper. . September 28, 2016; Front Door Paint Is Peeling – How To Paint A Metal Exterior Door?