I just installed a sink drain.

The drain has two retangular holes (about 1" by 1") in it just below
the top surface
of the sink and above the underside surface of the sink (above the
undersink gasket)

What are the purpose of these holes? Seems like they just provide a
cavity between
the outersurface of the drain and the inner surface of the hole in the
sink where the
drain fits. Drain water must accumulate in this cavity, I would think?

wrote

I just installed a sink drain.

The drain has two retangular holes (about 1" by 1") in it just below
the top surface
of the sink and above the underside surface of the sink (above the
undersink gasket)

What are the purpose of these holes? Seems like they just provide a
cavity between
the outersurface of the drain and the inner surface of the hole in the
sink where the
drain fits. Drain water must accumulate in this cavity, I would think?

There should be an "overflow" slot in the sink up near the top edge.
The water that goes through the overflow has to be able to get into the drain
pipe, even if you have the plug in the basin, so it comes in the sides.

wrote:
I just installed a sink drain.

The drain has two retangular holes (about 1" by 1") in it just below
the top surface
of the sink and above the underside surface of the sink (above the
undersink gasket)

What are the purpose of these holes? Seems like they just provide a
cavity between
the outersurface of the drain and the inner surface of the hole in the
sink where the
drain fits. Drain water must accumulate in this cavity, I would think?

I'm not familiar with a vent under the sink. Usually the air is taken
in at the sink overflow which is on the inside surface of the sink near
the top as MasterBlaster posted, but I'm pretty sure that's what you're
looking at - vent holes.

R

That would be the over flow. Some sinks have them some do not. Your
drain (actually the part called the tailstock) should have rectangular
holes in it just below the stopper to allow the water that runs into
the overflow to drain out.
Richard

MasterBlaster wrote:
wrote

I just installed a sink drain.

The drain has two retangular holes (about 1" by 1") in it just below
the top surface
of the sink and above the underside surface of the sink (above the
undersink gasket)

What are the purpose of these holes? Seems like they just provide a
cavity between
the outersurface of the drain and the inner surface of the hole in the
sink where the
drain fits. Drain water must accumulate in this cavity, I would think?

There should be an "overflow" slot in the sink up near the top edge.
The water that goes through the overflow has to be able to get into the drain
pipe, even if you have the plug in the basin, so it comes in the sides.

Thanks, this sink does not have an overflow slot, so they serve no
purpose on
it. I guess any water that gets into these holes (gets caught in the
cavity) will have to just evaporate out. This is a guest bathroom
sink that
is not used often

I could try filling the cavity, but I would have to take the plug
assembly out
again.

wrote:
MasterBlaster wrote:
wrote

I just installed a sink drain.

The drain has two retangular holes (about 1" by 1") in it just below
the top surface
of the sink and above the underside surface of the sink (above the
undersink gasket)

What are the purpose of these holes? Seems like they just provide a
cavity between
the outersurface of the drain and the inner surface of the hole in the
sink where the
drain fits. Drain water must accumulate in this cavity, I would think?

There should be an "overflow" slot in the sink up near the top edge.
The water that goes through the overflow has to be able to get into the drain
pipe, even if you have the plug in the basin, so it comes in the sides.

Thanks, this sink does not have an overflow slot, so they serve no
purpose on
it. I guess any water that gets into these holes (gets caught in the
cavity) will have to just evaporate out. This is a guest bathroom
sink that is not used often

I could try filling the cavity, but I would have to take the plug
assembly out again.

Those slots let the overflow water into the tailpipe. If you don't
have an overflow, and the trap clogs, what's to stop water from backing
up out of those holes?

When I installed a sink with no overflow (integral glass bowl and
countertop) it came with it's own drain assembly that didn't have the
overflow slots.

R

Well it sounds like you have a sink with an overflow that has a
tailstock that has no provision for that. So whoever put it in that way
made a mistake. If it's not used very often it's probably not a
problem. It would take water trapped in there a long time to evaporate.
I have kids and this would definately be a problem.
Richard

replying to spudnuty, Mike wrote:
I'm installing a drain and the water runs down the inside of the tailstock out
the vent holes and down the outside of the tailstock onto the inside of the
cabinet below. What am I doing wrong?

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On Fri, 04 Nov 2016 17:44:01 +0000, Mike
m wrote:

I'm installing a drain and the water runs down the inside of the tailstock out
the vent holes and down the outside of the tailstock onto the inside of the
cabinet below. What am I doing wrong?

You won't see my reply, but.

Did you use plumber's putty around the top of the drain and the nut
tightened enough?

On Friday, November 4, 2016 at 1:44:06 PM UTC-4, Mike wrote:
replying to spudnuty, Mike wrote:
I'm installing a drain and the water runs down the inside of the tailstock out
the vent holes and down the outside of the tailstock onto the inside of the
cabinet below. What am I doing wrong?

What "vent holes"?




--
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On Sat, 5 Nov 2016 11:25:30 -0700 (PDT), trader_4
wrote:

On Friday, November 4, 2016 at 1:44:06 PM UTC-4, Mike wrote:
replying to spudnuty, Mike wrote:
I'm installing a drain and the water runs down the inside of the tailstock out
the vent holes and down the outside of the tailstock onto the inside of the
cabinet below. What am I doing wrong?

What "vent holes"?

Probably the place where you hook up a dishwasher. Sounds like the
wrong tailpiece

On Saturday, November 5, 2016 at 2:33:05 PM UTC-4, wrote:
On Sat, 5 Nov 2016 11:25:30 -0700 (PDT), trader_4
wrote:

On Friday, November 4, 2016 at 1:44:06 PM UTC-4, Mike wrote:
replying to spudnuty, Mike wrote:
I'm installing a drain and the water runs down the inside of the tailstock out
the vent holes and down the outside of the tailstock onto the inside of the
cabinet below. What am I doing wrong?

What "vent holes"?

Probably the place where you hook up a dishwasher. Sounds like the
wrong tailpiece

But seems that would be a vent hole, not holes.... IDK, but something
ain't right.

replying to Mike, Lorrie Hedges wrote:
Mike, I'm faced with the same thing. I have a custom sink bowl (no overflow)
and the water is running out through that slot in the drain pipe. From what I
have read on this site, some come with the slot and some don't. You need to
replace the drain pipe with one that does not have that extra slot/hole for
the overflow. I wish I had known this before. Practice, practice,
practice..... Thanks for everyone's posts.

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replying to Lorrie Hedges, Hotrodky wrote:
This might have saved me more trouble. My new faucet has those holes and my
new sink doesn't have a drain hole. I had leaking and everything was tight.
I did have a small defect under the bowl where drain pipe gets tight. That's
where it was leaking. I looked at my other sinks they are bigger underneath
and overflow drains into those pipes. I will look for new drain pipes without
holes on sides. Other people had problems with this same vanity sink combo.
They used putty and silicone.

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replying to Hotrodky, Hotrodky wrote:
Well I ran into another problem. I got a grid drain but it is draining slow.
I'm to the point where I'm going to replace this vanity to.

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On Saturday, January 14, 2017 at 11:44:05 PM UTC-5, Hotrodky wrote:
replying to Lorrie Hedges, Hotrodky wrote:
This might have saved me more trouble. My new faucet has those holes and my
new sink doesn't have a drain hole.

Wow are you folks at HomeMoaners having all kinds of trouble. The OP
had a new drain with holes, now you have a faucet with holes and a
new sink that doesn't have a drain hole. Wow, are you all smoking
the same stuff?



I had leaking and everything was tight.
I did have a small defect under the bowl where drain pipe gets tight. That's
where it was leaking. I looked at my other sinks they are bigger underneath
and overflow drains into those pipes.

Every sink I've had, the overflow was integrated into the sink and there
was only the one drain connection at the bottom. Other types might exist,
but so far it seems HomeMoaners are the only folks finding them, buying
drain pipes with "holes on the sides", etc.


I will look for new drain pipes without
holes on sides.

Probably a good idea.

Other people had problems with this same vanity sink combo.
They used putty and silicone.

--

Pros use plumbers putty, hacks use silicone.

On Sunday, January 15, 2017 at 11:44:06 PM UTC-5, Hotrodky wrote:
replying to Hotrodky, Hotrodky wrote:
Well I ran into another problem. I got a grid drain but it is draining slow.
I'm to the point where I'm going to replace this vanity to.

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Every slow draining sink I've seen, the problem was never the sink, it
was a clogged drain, incorrect plumbing, etc. The sink just has a
standard size hole in the bottom, now can it be the cause of slow
draining?
in the bottom

On Mon, 16 Jan 2017 09:58:24 -0800 (PST), trader_4
wrote:

Every sink I've had, the overflow was integrated into the sink and there
was only the one drain connection at the bottom. Other types might exist,
but so far it seems HomeMoaners are the only folks finding them, buying
drain pipes with "holes on the sides", etc.

A vessel sink vs a standard sink use differnt tail pipe drains. A
vessel sink doesn't have an overflow. HomeMoaner may have bought the
wrong part? No, not possible.

On Monday, January 16, 2017 at 2:30:23 PM UTC-5, Oren wrote:
On Mon, 16 Jan 2017 09:58:24 -0800 (PST), trader_4
wrote:

Every sink I've had, the overflow was integrated into the sink and there
was only the one drain connection at the bottom. Other types might exist,
but so far it seems HomeMoaners are the only folks finding them, buying
drain pipes with "holes on the sides", etc.

A vessel sink vs a standard sink use differnt tail pipe drains. A
vessel sink doesn't have an overflow. HomeMoaner may have bought the
wrong part? No, not possible.


IDK, but if you have a sink that has just one drain hole, like most
and you're buying a drain assembly, you would think if the pipe had extra
holes you'd figure out WTF was going on before buying it and
putting it in. But, heh, that's just the way I do things.

On Mon, 16 Jan 2017 12:32:54 -0800 (PST), trader_4
wrote:

On Monday, January 16, 2017 at 2:30:23 PM UTC-5, Oren wrote:
On Mon, 16 Jan 2017 09:58:24 -0800 (PST), trader_4
wrote:

Every sink I've had, the overflow was integrated into the sink and there
was only the one drain connection at the bottom. Other types might exist,
but so far it seems HomeMoaners are the only folks finding them, buying
drain pipes with "holes on the sides", etc.

A vessel sink vs a standard sink use differnt tail pipe drains. A
vessel sink doesn't have an overflow. HomeMoaner may have bought the
wrong part? No, not possible.


IDK, but if you have a sink that has just one drain hole, like most
and you're buying a drain assembly, you would think if the pipe had extra
holes you'd figure out WTF was going on before buying it and
putting it in. But, heh, that's just the way I do things.

....but But BUT, we are talking about HomeMoaners here.
--
"Dodgeball in Burkas" -- Greg Gutfeld

On Monday, January 16, 2017 at 4:41:45 PM UTC-5, Oren wrote:
On Mon, 16 Jan 2017 12:32:54 -0800 (PST), trader_4
wrote:

On Monday, January 16, 2017 at 2:30:23 PM UTC-5, Oren wrote:
On Mon, 16 Jan 2017 09:58:24 -0800 (PST), trader_4
wrote:

Every sink I've had, the overflow was integrated into the sink and there
was only the one drain connection at the bottom. Other types might exist,
but so far it seems HomeMoaners are the only folks finding them, buying
drain pipes with "holes on the sides", etc.

A vessel sink vs a standard sink use differnt tail pipe drains. A
vessel sink doesn't have an overflow. HomeMoaner may have bought the
wrong part? No, not possible.


IDK, but if you have a sink that has just one drain hole, like most
and you're buying a drain assembly, you would think if the pipe had extra
holes you'd figure out WTF was going on before buying it and
putting it in. But, heh, that's just the way I do things.

...but But BUT, we are talking about HomeMoaners here.
--

I suspect many of the posts there are just fake spam, designed to try
to build traffic for the website. It's hard to believe people could
be that dumb. Also, if you notice, most times it's a one hit wonder.
They ask some inane question and are then never heard from again.

Those two holes in a sink are called drain holes. And those drain holes are used for water overflow in a sink.

replying to trader_4, Stan wrote:
I taped over the hole as couldn't find one without holes

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