Is an undermount sink harder to install?

Author: Amya Hoeger II  |  Last update: Thursday, September 25, 2025

Undermount kitchen sinks have a sleek configuration that can showcase a countertop and make cleaning easier. They can also be more challenging to install than drop-in sinks. This guide reviews how to install an undermount sink as well as the different types of installation.

What are the disadvantages of an undermount sink?

Here are a few cons of undermount sinks:
  • They Require More Support. Sinks are heavy. ...
  • Undermount Sinks Take Up Space. Although these sinks do not take up space above the counter, they do sit lower than drop-in sinks. ...
  • They Are More Difficult to Replace.

Is it better to undermount or drop-in sinks?

Drop-in sinks are typically easier to install and can potentially be added by the homeowner. Undermount sinks require greater skill and should be installed by a professional, but they provide a sleek and modern look to any kitchen.

How long does it take to install an undermount sink?

Installing an undermount sink in your bathroom can take 30 minutes or less with the correct tools and materials at hand. If it's your first time taking on this type of project, it can take longer depending on how many people are assisting.

Can you install an undermount sink without clips?

The epoxy/glue they use for undermount sinks is plenty strong enough without clips.

How To Replace and Install an Undermount Sink

Is installing an undermount sink hard?

Learning how to replace an undermount kitchen sink or install one is something most DIY-ers can do. All that's needed are the right tools and time. The toughest part is cutting the countertop, especially if it is granite or quartzite.

What holds an undermount sink in place?

Many undermount sink types are attached to the countertop with silicone sealant and metal clips.

Why are undermount sinks more expensive?

Generally, drop-in sinks have more inexpensive options in comparison to undermount sinks. The undermount sink is the more expensive alternative and will also cost more install. Undermount sinks are made to different specifications due to the intricacies of their installation requirements, making them a pricier option.

Is it expensive to replace an undermount sink?

On average, undermount kitchen sinks cost between $250 and $1,500. These sinks are more challenging to install because they're mounted underneath the countertop. They're usually sealed in place with caulk or epoxy.

Can you install an undermount sink after a countertop?

It's very important to install an undermount kitchen sink before the countertop slabs are set down. Once the countertop slabs are set down, you usually will not be able to fit the sink through the hole, and you won't be able to properly seal between the sink and the underside of the countertop.

Why do undermount sinks fall?

Adhesive deterioration: Since adhesives break down over time, a sink can fall if it's no longer secured. Improper installation: The sink may not have been installed properly. Corroded hardware: Hardware, like mounting clips, can corrode and fail to secure a sink.

What is the best countertop for an undermount sink?

Due to their strength and durability, granite, soapstone, and concrete are all perfect countertop material options for undermount sinks.

Why do people like undermount sinks?

An undermount kitchen sink is easier to clean. Since your countertops are below your sink, there will be little need for scrubbing them. You will also have less counter space, so cleaning will take less time. With less counter space, you will also have less waste from pans and pots.

Are undermount sinks still in style?

Undermount styles have gained immense popularity in 2023 due to their sleek and seamless design, which enhances the aesthetics of modern kitchens. They also make countertop cleaning easier, as debris can be swept directly into the sink without obstruction, offering both style and practicality.

Can a sink be both drop-in and undermount?

A dual mount sink has a flat rim that is usually just the thickness of the material, except for Quartz sinks which will have a thicker rim. They can be installed either above as a drop-in or below as an undermount, making it a versatile choice that can be installed in any countertop.

Can you replace an undermount sink without damaging the granite?

Countertops made from durable materials like granite, quartz, or laminate are less likely to be damaged during a sink replacement. However, older countertops or those made from fragile materials may be prone to cracking or chipping, especially during the removal of an undermount sink.

Does Lowes do sink installation?

Let Lowe's Help With Your Sink and Faucet Installation

We'll take care of that for you. With professional independent installers at the helm, jobs like installing a pedestal sink, installing a bathroom sink and installing a sink drain just got easier.

How much does a plumber charge to install a sink?

How much does a plumber charge to install a kitchen sink? Plumbing rates range from $45 to $200 per hour, and it will typically take around four hours to install a kitchen sink. For an average installation and materials, a plumber might charge between $220 and $560.

Does Home Depot install sinks?

At the Home Depot, we strive to ensure a more complete, satisfactory customer experience. That's why we offer the option of adding installation services to your order when purchasing a sink online. The Home Depot lets you purchase a Basic Installation service, including all required parts, with your online sink order.

How long do undermount sinks last?

An undermount sink should last for a decade or two, but the sink may need maintenance every few years to prevent bacteria buildup. You should replace the caulk between the gap of the sink and the countertop every three to five years to keep it fresh and clean.

Are there problems with undermount sinks?

Con: Improper Installation Could Mean Failure

Without the proper installation, which should include high-quality sealant, the sink can cause serious leakage. The proper support is also necessary for an undermounted sink. Imagine how much water weighs.

What is the easiest bathroom sink to install?

Drop-in bathroom sinks are the easiest to install. Undermount Sinks: They're mounted below the countertop. An undermount bathroom sink exposes the edge of the countertop surface around the sink.

Do plumbers install undermount sinks?

Additionally, this is a commonly asked question throughout the plumbing community. Today, we're here to definitively answer that question: plumbers can and regularly do install sinks. In fact, we highly recommend that you have a plumber handle this kitchen plumbing project for you.

Is silicone strong enough to hold an undermount sink?

The silicone will help hold the sink in place and ensure a waterproof seal. Avoid putting a bead that is too thick around the edge, as a significant amount of silicone is pushed out of the gap and onto the surrounding area. You will want just enough to cover the rim when pressed against the counter.

What does an undermount sink sit on?

Undermount sinks & worktops

If you are opting for an undermount sink then you will need a solid surface worktop like quartz, granite or even wood, so that any water splashes will run straight back off the edges around the sink back into the bowl.

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