Surface crack in bathroom sink

camp guy · 03-02-2025, 01:55 PM

I discovered a surface crack in our bathroom sink, not leaking (yet), but I wonder if there is a surface-applied product that will seal the crack before it gets any worse. The sink is "white", so a clear product would probably work the best. Thanks in advance.

TheProfessor · 03-02-2025, 03:25 PM

Might be a good idea to start looking at replacement sink. And while at it. Replacement faucet.

Is there some kind of Crazy Glue that will hold the sink together? Doubt it.

8gv · 03-02-2025, 06:10 PM

A picture would help.

Liquid silicone is a product I have used.

If you go into this knowing that a new sink is likely to be required soon then you have little to lose.

bobkatfly · 03-02-2025, 06:10 PM

I assume you're talking about a ceramic type sink, maybe porcelain?
I'm pretty sure you can get ceramic crack repair kits at most hardware stores. I think they're basically an epoxy application.
Make sure it's really on the surface only and monitor it to see if it propagates.
Did it happen from an impact?

Descant · 03-03-2025, 10:42 AM

Any idea what caused the crack? Could it happen again whether you repair or replace?
I had an old "green" bathroom once and a company came in and spray coated all the fixtures. Looked brand new. I don't recall cost, but cheaper than a plumber replacing everything.

codeman671 · 03-03-2025, 02:15 PM

www.crackofdawntubrepair.com

This is who my plumber uses and recommends.

03-02-2025, 01:55 PM	#1
camp guy Senior Member Join Date: Apr 2004 Location: formerly Winter Harbor, still Wolfeboro Posts: 1,189 Thanks: 301 Thanked 527 Times in 294 Posts	Surface crack in bathroom sink I discovered a surface crack in our bathroom sink, not leaking (yet), but I wonder if there is a surface-applied product that will seal the crack before it gets any worse. The sink is "white", so a clear product would probably work the best. Thanks in advance.

03-02-2025, 06:10 PM	#4
bobkatfly Senior Member Join Date: Aug 2015 Location: Center Tuftonboro Posts: 370 Thanks: 57 Thanked 54 Times in 48 Posts	I assume you're talking about a ceramic type sink, maybe porcelain? I'm pretty sure you can get ceramic crack repair kits at most hardware stores. I think they're basically an epoxy application. Make sure it's really on the surface only and monitor it to see if it propagates. Did it happen from an impact? __________________ Bob F Amherst till the big 66 comes (made it!) Winter Harbor/Mirror Lake till the big guy comes

03-03-2025, 10:42 AM	#5
Descant Senior Member Join Date: Mar 2006 Location: Merrimack and Welch Island Posts: 4,365 Thanks: 1,351 Thanked 1,624 Times in 1,056 Posts	Cause? Prevention? Any idea what caused the crack? Could it happen again whether you repair or replace? I had an old "green" bathroom once and a company came in and spray coated all the fixtures. Looked brand new. I don't recall cost, but cheaper than a plumber replacing everything.

03-02-2025, 03:25 PM	#2
TheProfessor Senior Member Join Date: Nov 2010 Posts: 1,128 Thanks: 17 Thanked 347 Times in 209 Posts	Might be a good idea to start looking at replacement sink. And while at it. Replacement faucet. Is there some kind of Crazy Glue that will hold the sink together? Doubt it.

03-02-2025, 06:10 PM	#3
8gv Senior Member Join Date: Jan 2012 Posts: 2,097 Thanks: 64 Thanked 745 Times in 479 Posts	A picture would help. Liquid silicone is a product I have used. If you go into this knowing that a new sink is likely to be required soon then you have little to lose.

03-03-2025, 02:15 PM	#6
codeman671 Senior Member Join Date: Jan 2005 Posts: 3,499 Thanks: 221 Thanked 815 Times in 489 Posts	www.crackofdawntubrepair.com This is who my plumber uses and recommends.