I recently installed a bathroom sink/vanity.
The problem is with the drain.
There was a small defect in the porcelain -- the
hole on the underside/bottom of the sink wasn't
perfectly circular, but had a small chip in it.
So when I put the gasket+washer+nut on from the
bottom, the gasket wasn't big enough to cover
the hole (because of the chip).
Silicone caulk around the perimeter worked for
a few days, but then lots of water on the floor.
What to do?
I'm not removing/returning the sink!
Do I remove the tailpiece, etc. and try to repair
the porcelain? If so, with what?
Do I try to find a bigger gasket?
Do I use some kind of sealant/epoxy/spray foam
on the already assembled joint?
We are talking a fairly small gap...
Help!

I'd try plumbers putty If put on thick it should fill any voids like this
and cheap
Bob
wrote in message
ups.com...
I recently installed a bathroom sink/vanity.
The problem is with the drain.
There was a small defect in the porcelain -- the
hole on the underside/bottom of the sink wasn't
perfectly circular, but had a small chip in it.
So when I put the gasket+washer+nut on from the
bottom, the gasket wasn't big enough to cover
the hole (because of the chip).
Silicone caulk around the perimeter worked for
a few days, but then lots of water on the floor.
What to do?
I'm not removing/returning the sink!
Do I remove the tailpiece, etc. and try to repair
the porcelain? If so, with what?
Do I try to find a bigger gasket?
Do I use some kind of sealant/epoxy/spray foam
on the already assembled joint?
We are talking a fairly small gap...
Help!

I don't like the putty solution -- what would prevent it from
eventually falling off?

its made specifically for sealing drain pipes to basins so I would assume
it wouldn't fall off I've used it without problems
before
Bob

" wrote in message
ups.com...
I don't like the putty solution -- what would prevent it from
eventually falling off?

"Silicone caulk around the perimeter worked for
a few days, but then lots of water on the floor.
What to do? "

Where did you put the silicone? On the gaskets and the small void
before assembly? Or around the perimeter after assembly? It should be
the former, which I would think would be the best alternative.

wrote:

I recently installed a bathroom sink/vanity.
The problem is with the drain.
There was a small defect in the porcelain -- the
hole on the underside/bottom of the sink wasn't
perfectly circular, but had a small chip in it.
So when I put the gasket+washer+nut on from the
bottom, the gasket wasn't big enough to cover
the hole (because of the chip).
Silicone caulk around the perimeter worked for
a few days, but then lots of water on the floor.
What to do?
I'm not removing/returning the sink!
Do I remove the tailpiece, etc. and try to repair
the porcelain? If so, with what?
Do I try to find a bigger gasket?
Do I use some kind of sealant/epoxy/spray foam
on the already assembled joint?
We are talking a fairly small gap...
Help!


More silicone!

Make sure the surfaces are dry. Use a hair dryer
on the porcelain.

Apply caulk to both sides of the Mack washer.
Apply caulk generously to the *threaded* part of
the tailpiece. Yes! If you don't, water will spiral
right down the threads.

If you use a big enough glob of caulk to fill the void
in the porcelain, and let it harden, this repair should
last forever.

Jim

I've used plumbers putty on a few installs (old habits die hard). However
on one commercial install, I used a dap of expanding insulating foam. Spray
a small amount on from the bottom. Stuff sticks like hell. If any comes
out on top, let it cure, and then cut with a small razor, and you can maybe
even touch it up with some glossy paint to match color.
You can also use the epoxy based putty, shich is similar to the stuff used
to patch leaking Gas tanks... Stuff hardens like a rock, and sticks pretty
nicely on various surfaces.

-Tony


"BoborAnn" wrote in message
...
I'd try plumbers putty If put on thick it should fill any voids like this
and cheap
Bob
wrote in message
ups.com...
I recently installed a bathroom sink/vanity.
The problem is with the drain.
There was a small defect in the porcelain -- the
hole on the underside/bottom of the sink wasn't
perfectly circular, but had a small chip in it.
So when I put the gasket+washer+nut on from the
bottom, the gasket wasn't big enough to cover
the hole (because of the chip).
Silicone caulk around the perimeter worked for
a few days, but then lots of water on the floor.
What to do?
I'm not removing/returning the sink!
Do I remove the tailpiece, etc. and try to repair
the porcelain? If so, with what?
Do I try to find a bigger gasket?
Do I use some kind of sealant/epoxy/spray foam
on the already assembled joint?
We are talking a fairly small gap...
Help!

I'm not sure its so unusual. Plumbers Putty is made for this exact thing.
Remove the tailpipe, spread some around the china, re-insert the tailpiece
and let the putty squish out as you crank down the nut on the bottom. The
bottom gasket is just to keep metal from touching the china, not for leaks.
No caulk needed on nut either, There should never be water at the nut itself
if installed properly. Should also never be need for caulk in such an
install.

wrote in message
ups.com...
I recently installed a bathroom sink/vanity.
The problem is with the drain.
There was a small defect in the porcelain -- the
hole on the underside/bottom of the sink wasn't
perfectly circular, but had a small chip in it.
So when I put the gasket+washer+nut on from the
bottom, the gasket wasn't big enough to cover
the hole (because of the chip).
Silicone caulk around the perimeter worked for
a few days, but then lots of water on the floor.
What to do?
I'm not removing/returning the sink!
Do I remove the tailpiece, etc. and try to repair
the porcelain? If so, with what?
Do I try to find a bigger gasket?
Do I use some kind of sealant/epoxy/spray foam
on the already assembled joint?
We are talking a fairly small gap...
Help!