I have just installed an undermount bathroom sink with a granite counter and noticed a slight leak below while testing it. It doesn’t leak when the water is running or when the water is sitting in the basin but only when water enters the overflow. I checked below and noticed a small (1 1/2″ long) crack in the porcelain. If it leaked while water is running I would have no choice but to rip it all out and put in a new sink but since it is only in the overflow I wondered if there was an easier solution. Does anyone know of a product that would seal it? Is there some sort of epoxy ? Would a good quality caulk be sufficient? It’s worth asking before I go the long route.
Thanks
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You could try one of those 5-minute epoxy glues and (while wearing nitrile gloves) work the stuff into the crack with your fingers.
If that does not work, You could remove the stopper assembly, make sure you've got the overflow passage dry by pouring alcohol or acetone through to rinse the water out, then stick a cork into the outlet, and pour enough clear epoxy or catalyzed polyester resin down the overflow to fill it to above the level of the crack. After a few minutes but before the pot life expires, pull the cork and let the excess drain into a bucket and wipe the edges of the opening to make sure that the drain gasket will still seal when you re-install it.
Come to think of it, it would might be just as much work and cheaper to take the sink out and swap it for an undamaged one.
I'd be worried that, it it was "fixed" by caulking the crack, the crack would continue to propagate over time and you'd be continually chasing the leak. I'd bite the bullet and replace it now -- especially if it's new and defective.
Mike Hennessy
Pittsburgh, PA
Everything fits, until you put glue on it.
I'd lay the super glue to the crack, more than once if it soaks in.
Spheramid Enterprises Architectural Woodworks
Repairs, Remodeling, Restorations
"If Brains was lard, you couldn't grease much of a pan"
Jed Clampitt
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If it was mine, I'd superglue it. If it was a client I'd replace it. It'll save you time and money in the long run.
On second thought, we almost never install sinks with overflows anymore. Not sure why not. Guess they're ugly (and they leak???)