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You are here: Home / Keeping the Home / How to Fix the Enamel on a Tub or Sink to Stop Rust Formation

How to Fix the Enamel on a Tub or Sink to Stop Rust Formation

September 22, 2017 By Shannon This post may contain affiliate links and this site uses cookies. Click here for details.

Today’s post is a long overdue follow-up to one I wrote several years ago. In that post, I shared a couple of ways to clean up rust rings that have formed around the drains of tubs and sinks. These approaches still work. However, as a few commenters noted, the rust rings tend to return. This typically occurs because the rust has eaten away at the enamel that coats the tub.

Does rust keep forming in an area of damaged enamel on your tub or sink? Here’s an easy way to repair the enamel so rust stops forming.

We began having this problem after I published that post. Thankfully, there is a relatively simple and affordable way to fix porcelain enamel so the rust doesn’t return! I did this with our tub and, if your tub has porcelain enamel, you can easily do it with yours.

How to repair the porcelain enamel on a bathtub or sink

If the rust is located around the drain, then you’ll need to start with Step 1. If the rust is somewhere else in the tub or sink, then you can begin with Step 2.

Step 1: Remove the drain stopper and flange

There are several different types of stoppers and flanges, but most are fairly easy to remove.

Remove the drain stopper and flange

You can find detailed instructions for removing drain stoppers here and detailed instructions for removing drain flanges here. If your drain has intact crossbars, then you can remove it easily with a drain remover wrench (sometimes called a smart dumbbell).

If your drain doesn’t have crossbars (or they are broken), then you will need to use a tub drain extractor.

Step 2: Clean up the rust

Remove the rust using a product like Bar Keepers Friend. Allow the area to dry. I suggest ventilating the room and allowing it to sit for 24 hours to make sure it is good and dry (you don’t want to trap moisture in when you repair the enamel because it could cause the area to rust again). You can also use this product to clean the flange.

Once the area is dry, gently sand with a fine sandpaper to smooth out the enamel edges and ensure the rust is gone. Wipe away any debris so the surface is clean.

Step 3: Repair the enamel

Purchase a Tub and Shower Repair Kit. Choose one that comes in the color you need, such as bone (white and biscuit are other common colors). If you need a less common color, such as pink or grey, choose a kit that can be tinted a variety of colors.

Follow the manufacturer instructions for applying the product to repair the enamel (the general process is to clean the area, apply the epoxy, allow it to dry, and then sand it smooth). For safety, be sure to carefully follow the instructions for ventilation.

Repair the enamel

Step 4: Replace the flange and drain stopper

Before replacing the flange, be sure to apply a ring of plumber’s putty beneath its edges. Plumber’s putty is a pliable setting compound that creates a watertight seal around the drain. You don’t want to forget this because it could result in a leak!

Apply a ring of plumbers putty beneath flange

The putty will compress as you screw in the flange. Simply pull away the portions that come up out around the flange.

Repaired enamel

Notes

It took us a few days to complete this project, but it was inexpensive and easy! We remained in this house for a year following the repair and had no additional issues with rust. As you can see from the pictures, the repair product wasn’t an exact match for our tub, but the slight difference in color didn’t bother us!

I hope this helps you repair your tub or sink so rust stops forming! If you have any questions, please ask them below.

Related posts:

Shared at the following:

Tuesdays with a Twist, Think Tank Thursday, and Welcome Home Wednesdays.

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Filed Under: Keeping the Home Tagged With: projects and crafts




Reader Interactions

Comments

  1. Jasmime Bush says

    April 4, 2019 at 5:12 pm

    This worked great! The porcelain colors didn’t match exactly, but that’s ok.

    • Shannon says

      April 5, 2019 at 8:20 pm

      I’m so glad it worked for you, Jasmine!

  2. Anna says

    May 2, 2019 at 1:27 am

    My tub is old and pink. It has rust around the outside edge. Where can u find the touch up to match once I remove the rust? Thank you.

    • Shannon says

      May 2, 2019 at 4:46 am

      Wow, pink will be a little tough, Anna.
      Amazon does sell some pink varieties, but I’m not sure if these are the right color of pink:
      Ceramifix Blush-Colored Touch Up Paint
      Porc-A-Fix Touch Up Kit in Venetian Pink
      Perhaps look on ebay?

  3. Howard says

    January 10, 2021 at 2:04 pm

    How can I fix the rust bubbles where the tub hits the tile??

    • Shannon says

      January 10, 2021 at 9:46 pm

      Hi Howard,
      I’ve not experienced rust bubbles where the tub hits the tile. I’m afraid I won’t be able to provide any useful advice on that particular issue.

  4. kay singh says

    March 17, 2023 at 12:55 pm

    my sink colour is peach. where can I find that colour of enamel

    • Shannon says

      March 18, 2023 at 6:50 am

      I can see how peach would be a difficult color to find! There are some options out there, including this peach one from the Ceramifix brand. Hope that helps!

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