How To Install A Vessel Sink Drain Without Overflow?

Beginner Info, Kitchen, Sink

How To Install A Vessel Sink Drain Without Overflow
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Bathroom vessel sink drain installation plays a crucial role in creating a good environment in your bathroom.

Needless to say, vessel sinks are eye-catching and come with idiosyncratic superlative features.

However, like any other sink, these sinks also have certain issues that need to be dealt with care in order to reap maximum benefits from it.

Vessel sinks are positioned in such a way that they don’t have overflow drains.

It’s perfectly fine until and unless you don’t fill your sink bowl to the top.

In general, most of the bathroom sinks are equipped with pop-up drains that connect with an overflow for proper drainage.

If your vessel sink lacks this feature then you would be needing a special type of drainage system that doesn’t require an overflow hookup.

In order to avoid any last-minute misadventure, the main drain should be capable of emptying the sink bowl in an epigrammatic span of time.

Cutting long-story-short, installing a vessel sink without an overflow drain is a quick, easy, and hassle-free task only if you’ve got the right tools with you along with the proper skill set.

So, without any further ado, let’s begin…

Steps Involved in Installing a Vessel Sink Drain Without Overflow

The below-mentioned steps will definitely help you in installing a vessel sink drain without overflow.

We’ve been recommending these simple & newbie-friendly steps to our clientele for quite some time and the feedback that we’ve received so far is positive and encouraging.

In case of any query or doubt feel free to reach out to us via the contact form of

List of Items Required:

  • Pop-up drain
  • Silicone waterproof putty
  • Putty gun or knife
  • Pencil or chalk
  • P-trap
  • Plumbers glue
  • Wrench
  • Leveling tool
  • Hacksaw
  • Mounting ring (optional)

A word of caution: Inculcate in your habit to turn off the water at the primary source before installing anything plumbing-related.

[Related] How to Make a Vessel Sink from a Bowl?

Choose the Drain

The success of the method depends to a large extent on choosing the right drain.

We at recommend pop-up drains as they are user-friendly and can be easily plugged and unplugged.

To be honest, there isn’t anything wrong with using grid drains but at the same time, you need to be sure that the holes are large enough in order to enable quick drainage.

However, if you’re looking for a drainage system that can be easily plugged in then grid drainage isn’t the right choice.

In such scenarios, where the plug-in is important you should opt for a pop-up drainage system.

The thing that I really adore about the pop-up drain system is that it doesn’t require a lever and can be opened or closed by pressing down on the top of the drain.

Another good thing about these pop-up drains is that they have got shorter plumbing lines since they don’t connect to the overflow.

A shorter pipeline simply means good drainage.

This feature is a MUST when an overflow drain is absent.

Set Your Sink in Place

You can use drain holes as a guide for lining up your sink with vanity.

Moving further, you need to have a visual guide which can be achieved by marking the edge with a pencil or even a piece of caulk that would do the trick for you.

A bead of waterproof silicone putty needs to be applied to the bottom edge after turning over the vessel.

In case, you need any guidance you can refer to previous marks.

Now, it’s time to position the vessel sink again into place over the vanity drain hole.

Before moving to the next step, you need to ensure that both the holes line up exactly before the silicone putty dries.

If you find caulk present outside the edge, clean the caulk post it has dried completely.

Once the caulk has completely dried peel it away with the help of a knife.

Make sure your vessel sink is positioned evenly on the flat surface, and if needed, you can take the help of a leveling tool.

In case, an adjustment needs to be made do it before the caulk completely dries.

Before you move to the next step, make sure the caulk has completely dried in order to prevent any last-minute misadventure.

If you’re planning to install a glass sink vessel then a mounting ring would be needed prior to caulking.

In general, glass sinks are handmade so the probability of them being uneven on the bottom is quite high so comes the need for a mounting ring.

A mounting ring will make the sink’s bottom sit flush with the cabinet below.

Once you’re done with the installation of a mounting ring, the next steps would be the proper positioning of the sink into place as stated above.

Insert Drain

There are quite a few sinks on the market that comes with drains and assemblies.

However, if that isn’t the case with your sink then you don’t have to worry as drains can be bought separately.

If the vessel sink that you’re planning to install doesn’t come with an overflow drain then the main drain that you’re planning to install shouldn’t have a connection to a separate exit.

Well, if you’re successful in installing the correct drain then not having this extra component will not bother you for sure.

What actually you need to do is to apply a bead of waterproof sealant around the drain hole.

You must follow the proper drain model when it comes to threading the drain through the vessel and into the vanity below.

Failing to do so can do more bad than good.

Moreover, the drain should fit snugly into the hole, and enough sealant should be used to affix and seal the drain completely.

In order to reap maximum benefits from this method, you need to ensure that the rubber gaskets and other mechanisms fit tightly to the bottom of the sink from under the vanity.

In case of any doubt or query feel free to reach out to us.

If you’re expediting the process for the first time make sure you’re NOT overtightening the drain as it can lead to cracking of your vessel sink especially if the materials used in the manufacturing of the vessel sink are brittle such as glass or ceramic.

Install Faucet & Handles

In general, when it comes to installing a sink, a faucet is installed separately from the sink bowl itself.

However, the spigot and its handles still hook up to the drainage system below.

Irrespective of which type of model you’re using the installation must go on as per the manufacturer’s instructions in order to prevent any unprecedented event.

The most crucial step involved in the installation of the faucet and handles is the hooking up of the hot and cold lines properly to the respective handles.

Moreover, you need to use a good quality sealant in order to prevent any leakage or seepage down the line.

Connect Drain to Plumbing Pipes Underneath Vanity

The final step involved in the installation process is the connection of the drain to the sink bowl.

First of all, you need to securely install the upper portion of the drain.

Secondly, you need to look under the vanity and make sure the drainpipe isn’t too long for the area under the vanity.

If the length of the drainpipe is more than required then in that case, you can take the help of a hacksaw to adjust the length.

Once the length of the pipe is adjusted the next thing that needs to be done is to connect the pipe that extends straight out of the bottom of the drain to a P-trap.

Make sure the end of each pipe is threaded so that they can screw onto one another quickly and easily.

One end of the P-trap should be attached to the main pipe that runs into the wall.

The two ends of the pipe must be waterproof and airtight and in order to achieve that you might have to use good quality glue.

With the help of a wrench, you can ensure that each and every item is securely tight.

At the same time, refrain from overtightening as it can lead to leakage and cracks.

Check for Leakage

Last but not least, check for leakage by turning on the water at the primary source.

Also, ensure that there isn’t any problem above or below the sink.

Test the drain by filling the sink and then draining it completely.

In any circumstances, the water should quickly drain out without any delay.

It’s A Wrap

First and foremost, I would like to thank you for being with us till the end.

Secondly, I would like to bring to your notice that I along with my core team have put loads and loads of effort in coming up with this idiosyncratic superlative piece of information on the topic of how to install a vessel sink drain without overflow?

And, in case, you liked our effort and want to appreciate us then please do share this post with like-minded people and the ones who are searching for it.

After all, sharing is caring, isn’t it?

Cutting long-story-short, irrespective of whether you’re a newbie or a seasoned professional, the aforementioned steps will help you in easy installation of vessel sink without overflow.

At the same time, you must understand that quick and hassle-free drainage is required for a vessel sink that lacks an overflow.

So, you must use a drain that is shorter on the plumbing side.

We recommend our clients to use pop-up drains as they allow you to fill your sink as per your requirements.

A soft-touch pop-up drain will allow you to quickly open the drain in case you need the sink to be emptied in an emergency.

In layman’s terms, with the right tools in place installing a vessel sink drain without overflow is a breeze.

Since they are positioned above a vanity, vessel sinks can be convenient to work with when performing installation, especially without an overflow.

That’s all, as of now :):)

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