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How to Install an Undermount Sink

Valerie Albarda

By Valerie Albarda
Updated October 31, 2022

Undermount sinks install beneath the counter and add a streamlined look and feel to your kitchen counter. Replacing and updating an undermount sink is a simple way to add extra style to your kitchen or bath. We’ll walk you through how to remove an old undermount sink and install a new one.

Skill

Intermediate

Time

One Day

Tools and Materials

Note

Product costs, availability and item numbers may vary online or by market.

Undermount Sink

A man using a red Craftsman tape measure to measure a sink opening.

You can replace an undermount sink to add a sleek, fresh feel to your kitchen or bath, plus it's a simple way to upgrade a room. Unlike a drop-in sink, there’s no visible rim, crevice or lip to catch dirt with an undermount sink, making cleaning the counter easier. Undermount sinks also provide slightly more counter space. For best results, measure your existing sink cutout to ensure the new sink will fit.

Caution

Because of the weight of the sinks themselves and the added weight of dishes and water, undermount sinks are best suited for more solid, weight-bearing countertop surfaces like marble, concrete, quartz or granite.

Removing the Old Sink

Before you remove the old sink, take a few pictures of the drain setup in case you need to reference it later.

Instructions

Installing the New Sink

Now that you’ve removed the old sink and cleaned the underside of the countertop, you’re ready to install the new sink.

Instructions

Don’t have time to do this project yourself? Check out our professional sink installation service.

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