How to Fix a Hole in A Porcelain Sink? [6 Methods with Steps]

Have you or your kids accidentally dropped hot, heavy items in your porcelain sink and now are left with a crack/hole in it? So, now you’re here searching for ways to repair these holes and restore your sink.

Sinks made from porcelain are durable and long-lasting. However, they have one major drawback -cracking and chipping. Porcelain sinks feature a glossy finish and are easy to maintain. But, if not properly maintained, they can crack or chip, and because porcelain is a sort of ceramic, even a tiny crack can soon turn into a hole.

Does this mean you have to replace the sink and have no other ways to fix it?

NO, certainly not.

Fortunately, there are several methods for repairing a hole in a porcelain sink. To find out these methods, continue reading. These methods are simple and easy and do not require you to hire a professional to do the job.

Cracks and Chips in A Porcelain Sink -Causes

Before getting into the specifics of repairing cracks and holes, let us briefly understand what causes these cracks. Knowing the causes will be of huge help because you will take precautions and prevent these cracks and chips from occurring.

Bonus Read: Check Out the Topic on How to Clean A Porcelain Sink?

Generally, in cast iron sinks, porcelain is coated on a metal underneath. As we know, metals are a conductor of heat, and porcelain does not withstand temperature changes.

As hot water or heavy items are dropped into the kitchen or bathroom sink, it gets in contact with the cold porcelain creating temperature stress that cracks the sink’s surface.

Leaning on the sink for an extended time might also cause the porcelain to crack. Additionally, sometimes the crack does not appear all at once but develops over time due to the everyday wear and tear that sinks experience.

Furthermore, drilling during installation also causes cracks in porcelain sinks.

Fortunately, these cracks are repairable. So, now let us dive into and discuss methods that will help you fix a hole in your porcelain sinks.

How to Fix Chips and Cracks in A Porcelain Sink?

To begin with, let us understand some methods to repair small hairline cracks or chips from your porcelain sinks.

Magic Porcelain Chip Fix

An easy and affordable option for filling a crack or chip is Magic Porcelain Chip Fix. This product is a two-part epoxy chip filling option suitable for your porcelain sinks, tubs, and tiles.

To use this product,

Using a fine-grit sandpaper -a 220 grit, sand the chip to smoothen the edges.
Next, clean and scrub the sink surface using an abrasive cleaner and scrubbing pad for better adhesion.
Rinse the sink thoroughly and let it air dry.
Pour the contents from both vials into the mixing tray. You can use plastic packaging to mix the contents.
Mix them for about a minute and let the mixture sit for 20-25 minutes at room temperature. It will give the mixture time to form the epoxy.

TIP -You can store the extra mixture in the freezer for later use.

Apply a light layer on the chip using the provided brush. With a moist paper towel, wipe up any drips.
Leave it for 45 minutes.
Use a lacquer thinner to clean the brush before second use. If necessary, apply the multiple light coats.
Before using the sink again, allow it to dry for 24 hours.
And clean the surface after five days from using the chip fix.

NOTE -You can also use Magic porcelain chip fix on ceramic, enamel, metal, and fiberglass.

Porc-A-Fix

Porc-A-Fix is a porcelain touch-up paint kit for American Standard. It provides a quick and easy solution to fix unsightly chips, light scratches, minor cracks, and other problems in porcelain tubs, sinks, toilets, and tiles.

NOTE -Buy a touch-up paint kit that is similar or somewhat similar to the color of your porcelain sink.

To use this,

Sand the cracks or chips using the sandpaper provided with the kit. If not, use any fine-grit sandpaper.
Clean the crack using a gentle soap and microfiber towel and dry with a clean lint free cloth.
Now, using the applicator from the kit, start applying coats of paint onto the cracks.
Do not apply too many coats at once -only try to level it with the sink surface.
Wait 24 hours for the item to dry by air.
Once it is completely dried, sand the excess and scuff it until smooth.

JB WaterWeld kit

JB WaterWeld kit is a formula to repair your sinks, tubs, boats underwater. It is certified safe for drinking water. Hence, it works well in fixing a hole in your porcelain sinks. Note that the cure color of this formula is off-white.

To use this,

Fine-grit sandpaper can be used to scuff up the hole.
Wipe the sink’s surface dry after cleaning it with rubbing alcohol and cotton swabs.
Now, cut a desired amount of the content from the tube and put on gloves to knead the content.
Knead it well until it forms a uniform color.
After a minute of kneading, fill the hole with this mixture.
Remove excess product using a single edged razor blade or putty knife. Be careful while using a razor.
Let it rest for minimum 25-30 minutes.
Once completely dry, sand it until smooth.
Wait for at least an hour before using the sink again.

BONUS TIP -Before using any repairing methods, tape the sides of the cracks or chips or holes to avoid damaging the rest of the porcelain sink surface.

Fixing a Hole in A Porcelain Sink

The following are some ways you can repair hairline cracks, chips, and holes in your porcelain sinks.

Using a Porcelain Sink Repair Kit

A readily available product in any hardware store is Porcelain Repair Kits. Match the color you choose to your porcelain sink.

To use these repair kits,

Begin by sanding the hole until the smooth edges using fine-grit sandpaper.
Use a gentle soap and microfiber towel to clean the surface thoroughly.
Rinse the surface and pat dry with a clean towel. Allow it to air dry or dry it with blow dryer.
Put on your work gloves and make sure your room is well-ventilated.
Follow the instructions provided on the package to mix the repair content.
Using the applicator, start to apply thin layers of the mixture into the holes. Keep in mind, before applying the second layer of the mixture, always let the first layer dry.
After drying, sand the excess repair compound and level it with the ceramic sink surface.
If you want, you can use a glazing kit to reglaze your porcelain sink.
Before using the repaired sink, let it dry for at least 24 hours

TIP -If you accidentally get the repairing mixture onto the rest of the ceramic sink, you can clean it using soaking a cotton swab with rubbing alcohol.

Using Epoxy Putty

Another simple and effective method to fix a hole in a porcelain sink is Epoxy Putty. Epoxy putty repairs chips and holes in your porcelain sink because of its gap-filling and long-lasting sealing properties. Furthermore, the putty hardens like ceramic which you can sand and paint as well.

BONUS TIP -You can use epoxy putty to repair the metal, concrete, ceramic, wood, PVC, and even brick.

For epoxy putty to work,

Start by thoroughly cleaning and drying the surface.
Now, put on gloves and use a spackling knife to cut the desired amount of putty.
Mix and knead the putty with your hands for at least a minute. If the epoxy putty kit is two-part hardening putty, cut the equal halves of the compound and knead well.
Within 3 minutes of mixing, apply the putty onto the chip. Make sure you fill the chip or hole thoroughly.
Work, smooth, and evenly distribute the putty with a putty knife. Remove the excess.
To mold and smoothen the applied putty, dip your fingers in warm water and rub the area with them.
Allow the putty to harden for 30-60 minutes.
You can sand the area with fine-grit sandpaper.
Lastly, paint the area using a porcelain touch-up paint kit and let it air dry.

Watch This Video to See What Epoxy Putty Before and After Application Result.

Using Epoxy Glue

In some cases, you might possess the chipped part of your porcelain and might want to reattach it to the sink. Fortunately, there is a way to reattach this broken piece and fix the hole in your porcelain sink. It is epoxy glue. Epoxy glue is a fast, safe, and effective method to repair a hole in your ceramic sink.

For using epoxy glue,

Begin by lightly sanding the affected area until the uneven edges are smooth.
Then, make sure you thoroughly clean the ceramic sink surfaces and wipe them dry.
Wear gloves and on a disposable surface, take equal amounts of both resin and the hardener.
Mix both the contents for a minute.
Now, apply this glue to the broken piece and the surface you want to attach to this piece.
Press both the surfaces firmly.
While the epoxy glue is wet, quickly remove the excess glue.
Make sure you support the chipped portion onto the sink for at least 10 minutes.

Caution -Do not let the glue touch your bare skin.

The Final Option -Replace the Sink.

The methods mentioned above will work on tiny to medium holes. However, you cannot just fix a see-through hole using putty, glue, or repair kits. Your porcelain sink may need to be replaced in this case.