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How To Install Undermount Sink To Quartz? [7 Steps To Follow]

Thinking of installing a sink to your quartz countertop? You can install either from an overmount or an undermount. An undermount sink is a  better option because it makes it look sleeker and has a high-end installation. 

Now you must be thinking if you can do it on your own. Well, we’ve got your back!

How to install an undermount sink to quartz?

First, turn the quartz countertop. Then you mark the outline of your undermount sink. You need to place the clips now. Then apply epoxy to the clip places and caulk the rim. At this point, you need to press the sink. Finally, you must secure the sink with wingnuts and brackets.

You’re just at the beginning of what you’re looking for! Keep on reading to know about this entire part to clarify your concern!

Get started now!

How To Install Undermount Sink To Quartz? – 7 Steps Guide

With a quartz countertop, there are two ways to install a sink. An undermount sink is an alternative. This can be quite efficient to prevent kitchen sink leakage.

We have curated a 7 steps guide on installing undermount sinks to quartz. Follow these steps to get your work done-

Required Tools And Supplies

Before getting started, gather all the things you need for this. Let’s have a look at the required tools mentioned below-

  • Clear epoxy resin
  • Denatured alcohol
  • Clear silicone caulk
  • Undermount sink brackets

After getting ready with all the required supplies, you may get started. Now, the step-by-step guide on how to install a quartz undermount is sink given below-

Step 1 of 7: Turn The Quartz Countertop

To begin, turn the quartz countertop on its side. Then set it on a level table with care. On the unfinished underside, the sink must be installed. Then place it on the cabinets.

At this time, shut off the main water valve. Rotate the handle gently to turn it off. If you do it roughly, the handle might get broken

Remember one thing! It’s always better to shut off the water system while working with water appliances. This would help to avoid any water mess at home.

Step 2 of 7: Trace The Outline Of The Undermount Sink With A Pencil

Then, on top of the sinkhole, place the undermount sink. Make sure it’s in the right place. Trace its outline with a pencil and then erase it. 

Use denatured alcohol at this time. This will assist in cleaning the area surrounding the sinkhole where the sink will be installed. The solvent is capable of removing any filth, ensuring proper glue bonding. 

The box may contain up to ten undermount sink clips. You may use any between 4 and 6.

Step 3 of 7: Place The Clips Properly

Place one clip at each of the four outer sides. And place two clips in the center as a suggestion. The clips have three parts, as you can see. The anchoring post is the first, followed by the wingnut and bracket. 

To get to the anchoring posts, disassemble the clips. On the corners, make sure the anchoring post lies in the boundary line. Trace the outline of each clip with your pencil. Now clean the clip installation location with denatured alcohol.

Not sure about the type of denatured alcohol that you can use? It’s a common concern because not every type of denatured alcohol might work fine for this. 

But not to worry! Because we’ve got you a couple of suggestions below to choose the best one around you:

Product 1
Product 2

These are the denatured alcohol available for multi-purpose uses. 

Step 4 of 7: Apply The Epoxy To The Clip Places

Now in equal parts, mix the epoxy grout and apply it to the clip places. To secure the clips, press the clip base firmly into the epoxy. Continue doing so until it fits through the openings.

Step 5 of 7: Caulk The Rim 

The epoxy will now have to be cured. Also, don’t attach the bracket or wingnut to the sink right away. 

The next step is to caulk the rim with silicone caulk. It must be applied to the area of the sink installation. 

You only need one strip for this. Make sure the amount is the same all over. Before mounting the sink, wipe the rim with denatured alcohol. 

Step 6 of 7: Press The Sink

To achieve proper silicone spreading, forcefully press the sink. You must determine how much weight the sink should exert against the surface. 

In case it’s light, press it down with a weight.

Step 7 of 7: Secure The Sink With Wingnuts And Brackets

The epoxy should dry by now. The anchoring posts would feel solid to the touch. But if you see any issue with the posts, there might be problems with the sink. In that case, take help from an expert regarding the issue.

But if everything is fine then you are good to continue your work. If this is the case, adjust the sink with the brackets and wingnuts. Allow another one or two hours for drying. Then install the slab of the quartz on the cabinet at this point.

Finally, you’re done! These are the steps you need to go through for the undermount sink installation. Don’t skip any step or else you’d face issues in the long term.

If you can install a sink on a granite countertop, then this is easy as cake for you.


Question: Is it okay if I use an undermount sink with any quartz countertop?

Answer: Quartz surfaces, solid surfaces and granite surfaces all benefit from undermount sinks. Laminate, like the rest, may not be as effective. It is possible that they will be more expensive than drop-in sinks. For this reason, while installing undermount sinks, it’s important to keep the countertop factors in mind.

Question: When to install the undermount sink?

Answer: Before installing an undermount sink on the base cabinets, it should be fastened to the countertop. It’s odd to do it any other way. In most cases, there isn’t enough room inside the sink base cabinet. And you won’t be able to complete your tasks. As a result, you must install the undermount before you go for the base cabinets.

Question: Is it necessary to have clips for the undermount sinks?

Answer: Undermount sinks can be installed in a variety of ways, with the majority of them working well. The manner employed is usually determined by how the installer was instructed to perform it. Some installers use clips. But the other uses glue. This basically depends from time to time.

Question: How much does it cost on average to buy an undermount sink?

Answer: There is a wide range in the cost of buying an undermount sink. The price of an undermount sink usually starts from around $75. But it can also go up to $1000 or even more.

The Final Words

Now you know how to install an undermount sink to quartz! We believe our information would be helpful enough for you to understand the entire process!

Don’t skip any steps to avoid unwanted complications. 

Best wishes!